阅读说明：本技术 一种用于消石灰制备的消化装置及方法 (Slaking device and method for preparing slaked lime ) 是由 陈宇雄 罗智斌 丘彬 陈宇珑 邓鹏憧 于 2021-03-18 设计创作，主要内容包括：本发明公开了一种用于消石灰制备的消化装置,包括依次相互连通的生石灰计量仓、消化器和消石灰仓；消化器包括结合室、汇合室、组合搅拌机、输料斜管、均与组合搅拌机顶端连通的收集筒仓和旋风分离器,结合室、汇合室的底端均与收集筒仓的顶端连通；汇合室的上端与结合室的中部之间通过输料斜管连通,汇合室中部与旋风分离器的进气端连通,旋风分离器的出气端连接有风机；结合室与生石灰计量仓的出料端之间连有气力输送系统,结合室内的顶端和相对两侧均设有第一雾化喷头,汇合室内顶端设有第二雾化喷头,第一雾化喷头和第二雾化喷头分别连有第一计量单元和第二计量单元；本发明消化效率高、消化反应效果好且环保。(The invention discloses a slaking device for preparing slaked lime, which comprises a quicklime measuring bin, a slaker and a slaked lime bin which are sequentially communicated with each other; the digester comprises a combination chamber, a confluence chamber, a combined stirrer, a material conveying inclined pipe, a collection silo and a cyclone separator, wherein the collection silo and the cyclone separator are communicated with the top end of the combined stirrer; the upper end of the converging chamber is communicated with the middle part of the combining chamber through a material conveying inclined pipe, the middle part of the converging chamber is communicated with the air inlet end of the cyclone separator, and the air outlet end of the cyclone separator is connected with a fan; a pneumatic conveying system is connected between the combining chamber and the discharge end of the quicklime measuring bin, a first atomizing nozzle is arranged at the top end and the two opposite sides in the combining chamber, a second atomizing nozzle is arranged at the top end in the combining chamber, and the first atomizing nozzle and the second atomizing nozzle are respectively connected with a first measuring unit and a second measuring unit; the invention has high digestion efficiency, good digestion reaction effect and environmental protection.)

1. A slaking apparatus for use in slaked lime production, the slaking apparatus comprising: comprises a quicklime measuring bin, a slaker and a quicklime bin which are sequentially communicated with each other; the digester comprises a combination chamber, a confluence chamber, a collection silo, a cyclone separator, a combined stirrer and a conveying inclined pipe, wherein the bottom ends of the collection silo and the cyclone separator are communicated with the top end of the combined stirrer, and the bottom ends of the combination chamber and the confluence chamber are communicated with the top end of the collection silo; the upper end of the converging chamber is communicated with the middle part of the combining chamber through the material conveying inclined pipe, the middle part of the converging chamber is communicated with the air inlet end of the cyclone separator, and the air outlet end of the cyclone separator is connected with a fan; combine the room with be connected with between the discharge end in quick lime measurement storehouse and utilize compressed air to blow quick lime extremely combine indoor pneumatic conveyor system, combine indoor top and relative both sides all to be provided with first atomizer, it is provided with second atomizer to join indoor top, first atomizer and second atomizer are connected with first metering unit and second metering unit respectively.

2. A slaking apparatus for use in the preparation of slaked lime according to claim 1, characterized in that: pneumatic conveying system includes compressed air source pipe, first pneumatic valve, first manual valve, check valve, pipeline and distributor, compressed air source pipe, first pneumatic valve, first manual valve and check valve connect gradually through the pipeline, quick lime measurement storehouse the discharge end both sides respectively with check valve, pipeline one end intercommunication, the pipeline other end with the distributor is connected, the both sides of distributor are provided with the delivery branch pipe that has the valve respectively, two delivery branch pipe respectively with another relative both sides of group of combination room are connected.

3. A slaking apparatus for use in the preparation of slaked lime according to claim 2, characterized in that: the inboard of combining the room is connected with intermediate bottom, intermediate bottom is close to the both sides of carrying the branch pipe and is provided with dispersion portion, dispersion portion is towards the arc setting of intermediate bottom's middle part indent.

4. A slaking apparatus for use in the preparation of slaked lime according to claim 2, characterized in that: the combination chamber, the distributor, the quicklime measuring bin, the pneumatic conveying system and the conveying inclined pipe are the same in number and are provided with at least one.

5. A slaking apparatus for use in the preparation of slaked lime according to claim 2, characterized in that: first temperature instruments are arranged in the distributor, the collecting silo and the slaked lime silo, and first humidity instruments are arranged in the collecting silo and the slaked lime silo.

6. A slaking apparatus for use in the preparation of slaked lime according to claim 1, characterized in that: the combined stirrer comprises a double-shaft stirrer and a double-screw feeder arranged at the top end of the double-shaft stirrer, the feed end of the double-screw feeder is communicated with the bottom end of the digester, the discharge end of the double-screw feeder is communicated with the feed end of the double-shaft stirrer, a discharge pipe is connected between the discharge end of the double-shaft stirrer and the feed end of the slaked lime bin, and the discharge pipe is connected with a discharge valve.

7. A slaking apparatus for use in the preparation of slaked lime according to claim 6, characterized in that: the double-shaft mixer is characterized in that a second temperature instrument and a first material level instrument are arranged in the double-shaft mixer, the first material level instrument is electrically connected with an external control system, the output end of the external control system is electrically connected with a motor of the double-screw feeder, the second temperature instrument is electrically connected with the input end of the external control system, and the output end of the external control system is electrically connected with a discharge valve.

8. A slaking apparatus for use in the preparation of slaked lime according to claim 7, characterized in that: the top of combination mixer be provided with collect the hopper of silo, cyclone bottom intercommunication, the both insides of hopper all are provided with a set of moisturizing shower nozzle, the moisturizing shower nozzle is connected with the third metering unit, be provided with second hygrograph and third thermometer in the hopper, cyclone's the end of giving vent to anger is connected with third hygrograph, fourth thermometer and flow meter, second hygrograph, third thermometer, third hygrograph, fourth thermometer and flow meter and external control system's input electric signal connection, the third metering unit with external control system's output electric signal connection.

9. A slaking apparatus for use in the preparation of slaked lime according to claim 8, characterized in that: the first metering unit comprises a water pipe, and a pressure regulating valve, a second manual valve, a second pneumatic valve and an electronic flowmeter which are sequentially arranged along the water flow direction, wherein the pressure regulating valve, the second manual valve, the second pneumatic valve and the electronic flowmeter are all connected to the water pipe; the second metering unit and the third metering unit have the same structure as the first metering unit and are connected with a water supply pipe together; the first metering unit is provided with three groups and is respectively connected with the first atomizing nozzles at the top end in the combination chamber and the first atomizing nozzles at two opposite sides in the combination chamber.

10. A method for the preparation of slaked lime according to claim 9, characterised in that it comprises the steps of:

testing according to the activity of quicklime to obtain the specific gravity of an effective component calcium oxide, setting the discharge value of a quicklime measuring bin, and conveying the quicklime into a combining chamber in the form of dust through compressed air output by a pneumatic conveying system;

secondly, after the quicklime in the form of dust enters the combination chamber, spraying quantitative water mist to carry out preliminary contact digestion reaction with the quicklime in the form of dust in the combination chamber through a first metering unit and a first atomizing nozzle; most of the quicklime which is in full contact reaction with water falls into a collecting silo for further digestion due to the action of gravity, and a small amount of the quicklime which is not in full contact with water mist and the water mist enter a converging chamber from a material conveying inclined pipe along with an air flow generated by a fan;

thirdly, the quicklime and the water mist entering the merging chamber are subjected to secondary contact digestion reaction through a second metering unit and a certain amount of water mist sprayed by a second atomizing nozzle arranged at the top end of the merging chamber and the quicklime and the water mist entering the merging chamber from the merging chamber; most of the quicklime fully contacted with water in the confluence chamber also falls into a collecting silo for further digestion due to the action of gravity, and a few of the quicklime and the water mist which are not fully contacted with the water mist enter a cyclone separator along with the wind flow generated by a fan;

under the action of the centrifugal force of the cyclone separator and the fan and the wind flow, the quick lime and the water mist generate violent movements of rolling, collision and the like, the digestion speed of the quick lime is accelerated, meanwhile, the quick lime in the digestion reaction and the slaked lime generated by the digestion reaction are separated from the water vapor, and the separated slaked lime and the quick lime enter a hopper;

collecting slaked lime generated by silo digestion and incompletely-reacted quicklime to fall into a hopper, sucking water vapor separated in the step four to a fan along with air, detecting water loss at an outlet end of a cyclone separator through a third humidity meter, a flow meter and a second humidity meter, controlling a third metering unit to output the same water quantity to a water replenishing spray nozzle by an external control system, and replenishing the water quantity of the quicklime and the slaked lime in the hopper through the water replenishing spray nozzle to ensure the digestion proportion of the quicklime and the water;

and step six, feeding the quick lime and the hydrated lime subjected to the secondary slaking reaction by the water supplied by the hopper into a combined stirrer for stirring and mixing, finishing the complete slaking reaction of the incompletely reacted quick lime, and feeding the generated hydrated lime into a hydrated lime bin for collection.

Technical Field

The invention relates to the technical field of slaked lime production equipment, in particular to a slaking device and a slaking method for slaked lime preparation.

Background

Slaked lime (i.e., calcium hydroxide) is widely used in industry, is a common building material, and is also used as a bactericide, a chemical raw material and the like; the existing production process of slaked lime is prepared by utilizing the reaction principle of quicklime and water, and the common slaked lime preparation methods comprise the following two methods: one method is that quicklime is firstly immersed into excessive water for pulping, and then the pulp is prepared by processes such as filtering and pressing, and the like, and the method has the defects that the proportioning of the quicklime and the water is not uniform, and the hardening of the slaked lime is easily caused by untimely cleaning of the slaked lime in reaction, so that the corresponding device is blocked, the production efficiency of the slaked lime is influenced, and the industrial wastewater is more and the pollution is larger; the other method is that the quick lime is firstly sent into a stirrer, then the quick lime is sprinkled into the stirrer, the quick lime is locally contacted with water, and then the stirrer is used for stirring and mixing the quick lime and the water.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a slaking device and a slaking method for preparing slaked lime, which are used for efficiently combining quicklime in a dust form with finely atomized water to ensure that the quicklime and the water are in full contact reaction and have the advantages of good slaking reaction effect, high slaking efficiency and environmental protection.

In order to achieve the purpose, the invention provides the following technical scheme:

a slaking device for preparing slaked lime comprises a quicklime measuring bin, a slaker and a slaked lime bin which are sequentially communicated with each other; the digester comprises a combination chamber, a confluence chamber, a collection silo, a cyclone separator, a combined stirrer and a conveying inclined pipe, wherein the bottom ends of the collection silo and the cyclone separator are communicated with the top end of the combined stirrer, and the bottom ends of the combination chamber and the confluence chamber are communicated with the top end of the collection silo; the upper end of the converging chamber is communicated with the middle part of the combining chamber through the material conveying inclined pipe, the middle part of the converging chamber is communicated with the air inlet end of the cyclone separator, and the air outlet end of the cyclone separator is connected with a fan; combine the room with be connected with between the discharge end in quick lime measurement storehouse and utilize compressed air to blow quick lime extremely combine indoor pneumatic conveyor system, combine indoor top and relative both sides all to be provided with first atomizer, it is provided with second atomizer to join indoor top, first atomizer and second atomizer are connected with first metering unit and second metering unit respectively.

Further setting: pneumatic conveying system includes compressed air source pipe, first pneumatic valve, first manual valve, check valve, pipeline and distributor, compressed air source pipe, first pneumatic valve, first manual valve and check valve connect gradually through the pipeline, quick lime measurement storehouse the discharge end both sides respectively with check valve, pipeline one end intercommunication, the pipeline other end with the distributor is connected, the both sides of distributor are provided with the delivery branch pipe that has the valve respectively, two delivery branch pipe respectively with another relative both sides of group of combination room are connected.

Further setting: the inboard of combining the room is connected with intermediate bottom, intermediate bottom is close to the both sides of carrying the branch pipe and is provided with dispersion portion, dispersion portion is towards the arc setting of intermediate bottom's middle part indent.

Further setting: the combination chamber, the distributor, the quicklime measuring bin, the pneumatic conveying system and the conveying inclined pipe are the same in number and are provided with at least one.

Further setting: first temperature instruments are arranged in the distributor, the collecting silo and the slaked lime silo, and first humidity instruments are arranged in the collecting silo and the slaked lime silo.

Further setting: the combined stirrer comprises a double-shaft stirrer and a double-screw feeder arranged at the top end of the double-shaft stirrer, the feed end of the double-screw feeder is communicated with the bottom end of the digester, the discharge end of the double-screw feeder is communicated with the feed end of the double-shaft stirrer, a discharge pipe is connected between the discharge end of the double-shaft stirrer and the feed end of the slaked lime bin, and the discharge pipe is connected with a discharge valve.

Further setting: the double-shaft mixer is characterized in that a second temperature instrument and a first material level instrument are arranged in the double-shaft mixer, the first material level instrument is electrically connected with an external control system, the output end of the external control system is electrically connected with a motor of the double-screw feeder, the second temperature instrument is electrically connected with the input end of the external control system, and the output end of the external control system is electrically connected with a discharge valve.

Further setting: the top of combination mixer be provided with collect the hopper of silo, cyclone bottom intercommunication, the both insides of hopper all are provided with a set of moisturizing shower nozzle, the moisturizing shower nozzle is connected with the third metering unit, be provided with second hygrograph and third thermometer in the hopper, cyclone's the end of giving vent to anger is connected with third hygrograph, fourth thermometer and flow meter, second hygrograph, third thermometer, third hygrograph, fourth thermometer and flow meter and external control system's input electric signal connection, the third metering unit with external control system's output electric signal connection.

Further setting: the first metering unit comprises a water pipe, and a pressure regulating valve, a second manual valve, a second pneumatic valve and an electronic flowmeter which are sequentially arranged along the water flow direction, the pressure regulating valve, the second manual valve, the second pneumatic valve and the electronic flowmeter are all connected to the water pipe, the second metering unit and the third metering unit have the same structure as the first metering unit, and the second metering unit, the third metering unit and the first metering unit are jointly connected with a water supply pipe; the first metering unit is provided with three groups and is respectively connected with the first atomizing nozzles at the top end in the combination chamber and the first atomizing nozzles at two opposite sides in the combination chamber.

A method for slaked lime production comprising the steps of:

testing according to the activity of quicklime to obtain the specific gravity of an effective component calcium oxide, setting the discharge value of a quicklime measuring bin, and conveying the quicklime into a combining chamber in the form of dust through compressed air output by a pneumatic conveying system;

secondly, after the quicklime in the form of dust enters the combination chamber, spraying quantitative water mist to carry out preliminary contact digestion reaction with the quicklime in the form of dust in the combination chamber through a first metering unit and a first atomizing nozzle; most of the quicklime which is in full contact reaction with water falls into a collecting silo for further digestion due to the action of gravity, and a small amount of the quicklime which is not in full contact with water mist and the water mist enter a converging chamber from a material conveying inclined pipe along with an air flow generated by a fan;

thirdly, the quicklime and the water mist entering the merging chamber are subjected to secondary contact digestion reaction through a second metering unit and a certain amount of water mist sprayed by a second atomizing nozzle arranged at the top end of the merging chamber and the quicklime and the water mist entering the merging chamber from the merging chamber; most of the quicklime fully contacted with water in the confluence chamber also falls into a collecting silo for further digestion due to the action of gravity, and a few of the quicklime and the water mist which are not fully contacted with the water mist enter a cyclone separator along with the wind flow generated by a fan;

under the action of the centrifugal force of the cyclone separator and the fan and the wind flow, the quick lime and the water mist generate violent movements of rolling, collision and the like, the digestion speed of the quick lime is accelerated, meanwhile, the quick lime in the digestion reaction and the slaked lime generated by the digestion reaction are separated from the water vapor, and the separated slaked lime and the quick lime enter a hopper;

collecting slaked lime generated by silo digestion and incompletely-reacted quicklime to fall into a hopper, sucking water vapor separated in the step four to a fan along with air, detecting water loss at an outlet end of a cyclone separator through a third humidity meter, a flow meter and a second humidity meter, controlling a third metering unit to output the same water quantity to a water replenishing spray nozzle by an external control system, and replenishing the water quantity of the quicklime and the slaked lime in the hopper through the water replenishing spray nozzle to ensure the digestion proportion of the quicklime and the water;

and step six, feeding the quick lime and the hydrated lime subjected to the secondary slaking reaction by the water supplied by the hopper into a combined stirrer for stirring and mixing, finishing the complete slaking reaction of the incompletely reacted quick lime, and feeding the generated hydrated lime into a hydrated lime bin for collection.

In conclusion, the quicklime measuring bin, the first measuring unit and the second measuring unit are used for automatically providing quantitative quicklime and water for the digester, so that industrial wastewater is prevented from being generated, and the subsequent digestion quality is ensured; the function of preliminary dispersion of the quicklime is achieved through a pneumatic conveying system; the effect of primary and secondary efficient combined contact reaction of water mist and quick lime is realized through the combination chamber, the first atomizing nozzle, the merging chamber and the second atomizing nozzle, and further the effect of improving the digestion reaction efficiency and the digestion effect in the combination chamber and the merging chamber is realized; by the collecting silo, the detention time of the quick lime fully contacted with water in the primary and secondary modes before entering the combined stirrer is prolonged, and the effect of further improving the digestion effect is achieved; the cyclone separator and the fan play a role in accelerating the slaking speed of the quicklime and protecting the environment; the function of further improving the digestion reaction efficiency and effect is achieved by combining the stirrer and the slaked lime bin; according to the invention, quicklime is efficiently combined with water mist in a dust form, and the quicklime and the water mist are fully mixed for many times, so that the whole slaking reaction has the advantages of good slaking reaction effect, high slaking efficiency and environmental protection.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a view of C-C of FIG. 1;

FIG. 3 is a top view of an embodiment of the present invention;

FIG. 4 is a side view of an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first metering unit according to an embodiment of the present invention.

In the figure: 1. a quicklime measuring bin; 2. a digester; 3. a slaked lime bin; 4. a binding chamber; 5. a merging chamber; 6. collecting the silo; 7. a cyclone separator; 8. a combined stirrer; 9. a material conveying inclined pipe; 10. a fan; 11. a first manual valve; 12. a first atomizer; 13. a second atomizer; 14. a first metering unit; 15. a second metering unit; 16. a compressed gas source pipe; 17. a first pneumatic valve; 18. a check valve; 19. a delivery conduit; 20. a dispenser; 21. a delivery branch pipe; 22. a middle partition plate; 23. a dispersing section; 24. a first temperature meter; 25. a first hygrometer; 26. a double-shaft mixer; 27. a double-screw feeder; 28. a discharge pipe; 29. a discharge valve; 30. a second temperature meter; 31. a first material level meter; 32. a hopper; 33. a water replenishing spray head; 34. a third metering unit; 35. a second hygrometer; 36. a third temperature meter; 37. a third hygrometer; 38. a fourth temperature gauge; 39. a flow meter; 40. a water pipe; 41. a pressure regulating valve; 42. a second manual valve; 43. a second pneumatic valve; 44. an electronic flow meter; 45. a water supply pipe.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments. It should be noted that the terms "upper" and "lower" used in the following description refer to directions in fig. 1, and the terms "bottom" and "top" refer to directions toward the geometric center of a particular component.

The most key concept of the invention is as follows: through the quicklime measuring bin 1, the first measuring unit 14 and the second measuring unit 15, the effect of automatically providing quantitative quicklime and water for the digester 2 is realized, and industrial wastewater is prevented from being generated; conveying a certain amount of quicklime into the combination chamber 4 in a dust form by using compressed air through a pneumatic conveying system to play a role in preliminarily dispersing the quicklime; the water mist is provided for the combination chamber 4 through the combination chamber 4 and the first atomizing nozzle 12, so that the effect of primary efficient combination contact reaction of the water mist and the quick lime is realized, the water mist is provided for the combination chamber 5 through the combination chamber 5 and the second atomizing nozzle 13, so that the secondary efficient combination contact reaction of the water mist and the quick lime is realized, and the effects of improving the digestion reaction efficiency and the digestion effect in the combination chamber 4 and the combination chamber 5 are realized; the quick lime fully contacted with water in the combination chamber 4 and the confluence chamber 5 is collected through the collection silo 6, so that the detention time of the quick lime before the quick lime enters the combined stirrer 8 is prolonged, and the effect of further improving the digestion effect is achieved; through the cyclone separator 7 and the fan 10, under the action of wind flow, the effects of accelerating the slaking speed of the quicklime and separating and collecting the quicklime and the slaked lime are achieved, and dust is prevented from floating into the external environment to cause pollution; the combined stirrer 8 and the slaked lime bin 3 play a role in further improving the efficiency and the effect of the digestion reaction;

according to the invention, quicklime is efficiently combined with water mist in a dust form, and is fully mixed for multiple times through the combination chamber 4, the confluence chamber 5, the cyclone separator 7 and the combined stirrer 8, so that the whole system has the advantages of good digestion reaction effect, high digestion efficiency and environmental protection.

Referring to fig. 1 to 5, a slaking apparatus for preparing slaked lime includes a quicklime measuring bin 1, a slaker 2 and a slaked lime bin 3 which are sequentially communicated with each other; the digester 2 comprises a combination chamber 4, a confluence chamber 5, a collection silo 6, a cyclone separator 7, a combined stirrer 8 and a material conveying inclined pipe 9, wherein the bottom ends of the collection silo 6 and the cyclone separator 7 are both communicated with the top end of the combined stirrer 8, and the bottom ends of the combination chamber 4 and the confluence chamber 5 are both communicated with the top end of the collection silo 6; the upper end of the converging chamber 5 is communicated with the middle part of the combining chamber 4 through a material conveying inclined pipe 9, the middle part of the converging chamber 5 is communicated with the air inlet end of a cyclone separator 7, and the air outlet end of the cyclone separator 7 is connected with a fan 10; the pneumatic conveying system for blowing the quick lime into the combination chamber 4 by utilizing compressed air is connected between the combination chamber 4 and the discharge end of the quick lime measuring bin 1, the top end and the opposite two sides in the combination chamber 4 are respectively provided with a first atomizing nozzle 12, the top end in the combination chamber 5 is provided with a second atomizing nozzle 13, and the first atomizing nozzle 12 and the second atomizing nozzle 13 are respectively connected with a first measuring unit 14 and a second measuring unit 15.

As can be seen from the above description, when slaked lime is needed, firstly, quantitative quicklime is provided according to a preset value of the quicklime measuring bin 1 through the quicklime measuring bin 1 and the pneumatic conveying system, and the quicklime is conveyed into the combining chamber 4 in the form of dust by using compressed air, so that the effects of automatically and accurately providing quantitative quicklime for the digester 2 and simultaneously primarily dispersing the quicklime are achieved; after the quicklime blown into a dust form by compressed air enters the combination chamber 4, quantitative water is sprayed towards the quicklime in the combination chamber 4 in a water mist form through the first metering unit 14 and the first atomizing nozzle 12, the quicklime is primarily and efficiently combined with the atomized water in the dust form, most of the quicklime and the water are in full contact reaction, the effects of automatically and accurately controlling the water amount entering the combination chamber 4 and improving the digestion reaction effect and subsequent digestion efficiency in the combination chamber 4 are achieved, and meanwhile, industrial wastewater is prevented from being generated; the first atomizing nozzle 12 is arranged on the top end and the two opposite sides in the combination chamber 4, so that the quicklime is contacted with water more fully, and the effects of further improving the digestion reaction effect and the subsequent digestion efficiency are achieved;

then most of the quicklime fully contacted with the water falls into the collecting silo 6 due to the action of gravity, and a few of the quicklime and the water mist which are not fully contacted with the water mist enter the converging chamber 5 from the material conveying inclined pipe 9 along with the air flow generated by the fan 10; through the second metering unit 15 and the second atomizing nozzle 13 arranged at the top end in the merging chamber 5, quantitative water mist is provided for the merging chamber 5 to perform secondary efficient combined contact reaction with the quick lime in the merging chamber 5, so that the effects of automatically and accurately controlling the water amount entering the merging chamber 5 and improving the efficiency and effect of the digestion reaction in the merging chamber 5 are achieved; most of the quicklime fully contacted with water in the converging chamber 5 also falls to the collecting silo 6 due to the action of gravity, and a few of the quicklime and the water mist which are not fully contacted with the water mist enter the cyclone separator 7 along with the wind flow generated by the fan 10; in addition, the retention time of the quick lime before entering the combined stirrer 8 is prolonged by arranging the collecting silo 6, and the effect of further improving the digestion effect is achieved;

then, the cyclone separator 7 and the fan 10 generate violent movements such as rolling, collision and the like under the action of wind flow, so that the slaking speed of the quicklime is greatly accelerated, the quicklime in the slaking reaction and the slaked lime generated by the slaking reaction are separated and collected, the dust is prevented from floating into the external environment to cause pollution, and the effects of further improving the slaking reaction effect, the integral slaking efficiency and protecting the environment are achieved; finally, the slaked lime and the quicklime in the cyclone separator 7 and the collecting silo 6 enter the combined stirrer 8 to be stirred and mixed, so that the incompletely reacted quicklime is completely digested, the generated slaked lime enters the slaked lime silo 3 to be collected, and the effects of further improving the digestion reaction effect and the overall digestion efficiency are achieved; according to the invention, quicklime is efficiently combined with water mist in a dust form, and is fully mixed for multiple times through the combining chamber 4, the converging chamber 5 and the cyclone separator 7, so that the whole device has the advantages of good digestion reaction effect, high digestion efficiency and environmental protection.

Further: the pneumatic conveying system comprises a compressed air source pipe 16, a first pneumatic valve 17, a first manual valve 11, a check valve 18, a conveying pipeline 19 and a distributor 20, the compressed air source pipe 16, the first pneumatic valve 17, the first manual valve 11 and the check valve 18 are sequentially connected through pipelines, two sides of the discharge end of a quicklime metering bin 11 are respectively communicated with the check valve 18 and one end of the conveying pipeline 19, the other end of the conveying pipeline 19 is connected with the distributor 20, two sides of the distributor 20 are respectively provided with a conveying branch pipe 21 with a valve, and the two conveying branch pipes 21 are respectively connected with the other group of opposite two sides of the combining chamber 4.

As can be seen from the above description, when the quicklime in the quicklime measuring bin 11 is discharged into one end of the conveying pipeline 19, first, the first pneumatic valve 17 and the first manual valve 11 are opened, and the compressed air enters the conveying pipeline 19 through the compressed air source pipe 16; then, the raw lime in the conveying pipe 19 is blown off into a dust state by compressed air and is conveyed into the distributor 20 through the conveying pipe 19; then, the quicklime dispersed into a dust state is respectively conveyed into the combining chamber 4 through the two conveying branch pipes 21 by the distributor 20, so that the effect of further highly dispersing the quicklime is achieved, and the subsequent contact reaction of the quicklime and water can be more fully facilitated; through check valve 18, prevent to cause compressed gas source pipe 16 to block up because of quick lime and compressed air get into compressed gas source pipe 16 against the current in, the dispersion effect of quick lime is poor, causes follow-up quick lime and water smoke contact inhomogeneous, plays to guarantee that compressed gas source pipe 16 is unobstructed all the time to and the effect of the dispersion effect and the follow-up digestion reaction effect of guaranteeing quick lime.

Further: the inner side of the combination chamber 4 is connected with a middle partition 22, two sides of the middle partition 22 close to the conveying branch pipe 21 are provided with dispersing parts 23, and the dispersing parts 23 are arranged in an arc shape which is concave towards the middle part of the middle partition 22.

From the above description, after the quick lime that further highly disperses through distributor 20 and delivery branch 21 gets into combination room 4, through intermediate bottom 22 and be towards the dispersion portion 23 of intermediate bottom 22 middle part indent, the quick lime of partial bigger granule further disperses into less granule through the striking, avoids quick lime and intermediate bottom 22 direct striking and caking, guarantees that slaked lime and water intensive mixing are even, plays further to carry out highly dispersed, the effect of improving digestion reaction in combination room 4 and follow-up whole digestion efficiency's effect to quick lime.

Further: the number of the combination chamber 4, the distributor 20, the quicklime measuring bin 1, the pneumatic conveying system and the conveying inclined pipe 9 is the same, and at least one is arranged.

From the above description, by arranging at least one of the combination chamber 4, the distributor 20, the quicklime measuring bin 1, the pneumatic conveying system and the material conveying inclined pipe 9, when a large amount of slaked lime needs to be produced, a corresponding number of devices can be selected for digestion reaction according to the actual demand on slaked lime yield and production rate, so as to improve the whole application range of the device.

Further: the distributor 20, the collecting silo 6 and the slaked lime silo 3 are all provided with a first temperature instrument 24, and the collecting silo 6 and the slaked lime silo 3 are all provided with a first humidity instrument 25.

As can be seen from the above description, the first temperature meter 24 and the humidity meter are arranged in the distributor 20, the collecting silo 6 and the slaked lime silo 3 to detect the temperature and the humidity of the quicklime and the water at different stages, so that the staff can conveniently master the reaction state of the quicklime and the water, further adjust the ratio of the quicklime powder to the water, and ensure the digestion quality.

Further: the combined stirrer 8 comprises a double-shaft stirrer 26 and a double-screw feeder 27 arranged at the top end of the double-shaft stirrer 26, wherein the feeding end of the double-screw feeder 27 is communicated with the bottom end of the digester 2, the discharging end of the double-screw feeder 27 is communicated with the feeding end of the double-shaft stirrer 26, a discharging pipe 28 is connected between the discharging end of the double-shaft stirrer 26 and the feeding end of the slaked lime bin 33, and the discharging pipe 28 is connected with a discharging valve 29.

As can be seen from the above description, the slaked lime in the collecting silo 6 and the cyclone separator 7 falls into the double-screw feeder 27, and since a small amount of quicklime and water which are completely digested exist in the slaked lime, the slaked lime is conveyed towards the discharge end of the double-screw feeder 27 through the double-screw feeder 27, and simultaneously the quicklime and the water mixed in the slaked lime are stirred and mixed, so that the effect of primarily stirring and mixing the slaked lime which contains a small amount of quicklime and water is achieved, and the effect of further improving the digestion reaction efficiency and the digestion effect is achieved; the feeding end of the double-shaft stirrer 26 is improved by the slaked lime which is stirred and mixed for the first time, the feeding end enters the double-shaft stirrer 26, the slaked lime with the residual water and the quicklime which are not mixed completely and are mixed uniformly is stirred and mixed uniformly again through the double-shaft stirrer 26, when the water and the quicklime in the double-shaft stirrer 26 are subjected to uniform digestion and reaction completely, the discharge valve 29 is opened, the slaked lime after the reaction is finished enters the slaked lime bin 3 through the discharge pipe 28, and the effect of improving the whole digestion reaction efficiency and the digestion effect is achieved.

Further: a second temperature meter 30 and a first material level meter 31 are arranged in the double-shaft mixer 26, the first material level meter 31 is electrically connected with an external control system, the output end of the external control system is electrically connected with a motor of the double-screw feeder 27, the second temperature meter 30 is electrically connected with the input end of the external control system, and the output end of the external control system is electrically connected with a discharge valve 29.

As can be seen from the above description, by providing the first material level meter 31 in the dual-shaft mixer 26, when the height of the material in the dual-shaft mixer 26 exceeds the preset amount, the first material level meter 31 sends a signal to the external control system, and the external control system controls the motor of the dual-screw feeder 27 to stop rotating, so as to avoid the influence on the subsequent overall stirring effect due to the excessive material in the dual-shaft mixer 26, and play a role in automatically controlling the dual-screw feeder 27 to feed so as to ensure the digestion effect and the digestion efficiency in the subsequent dual-screw feeder 27; by arranging the second temperature instrument 30 in the double-shaft stirrer 26, when the second temperature instrument 30 detects that the temperature in the double-shaft stirrer 26 reaches the temperature released after the complete digestion reaction of the preset quicklime, the second temperature instrument 30 sends a detected temperature signal to an external control system, the external control system controls the discharge valve 29 to be opened, and the slaked lime enters the slaked lime bin 3; since the reaction in the double-shaft mixer 26 is completed to the end of the reaction, in order to decrease the temperature, if the temperature detected by the second temperature meter 30 exceeds the preset temperature, it indicates that the quicklime has not been completely digested and reacted, the discharge valve 29 is closed until the quicklime is mixed to complete reaction, so as to realize the automatic discharge function of the double-shaft mixer 26.

Further: the top end of the combined stirrer 8 is provided with a hopper 32 communicated with the collection silo 6 and the bottom end of the cyclone separator 7, two inner sides of the hopper 32 are respectively provided with a group of water replenishing spray heads 33, the water replenishing spray heads 33 are connected with a third metering unit 34, a second hygrograph 35 and a third thermometer 36 are arranged in the hopper 32, the air outlet end of the cyclone separator 7 is connected with a third hygrograph 37, a fourth hygrograph 38 and a flow meter 39, the second hygrograph 35, the third thermometer 36, the third hygrograph 37, the fourth hygrograph 38 and the flow meter 39 are in electric signal connection with the input end of an external control system, and the third metering unit 34 is in electric signal connection with the output end of the external control system.

As can be seen from the above description, the slaked lime in the collection silo 6 and the cyclone separator 7 firstly falls into the hopper 32 and then falls into the double-screw feeder 27, when the slaked lime is separated by the cyclone separator 7, part of water is evaporated and sucked to the fan 10 along with the air, the water loss at the outlet end of the cyclone separator 7 is detected through the third moisture meter 37, the flow meter 39 and the second moisture meter 35, the external control system sends a signal to the third metering unit 34, the third metering unit 34 sends the same amount of water to the water replenishing nozzle 33, the water replenishing nozzle 33 replenishes the quicklime and the slaked lime in the hopper 32, so as to automatically replenish the water, ensure the slaking ratio of the quicklime and the water, and further ensure the overall slaking reaction effect.

Further: the first metering unit 14 comprises a water pipe 40, a pressure regulating valve 41, a second manual valve 42, a second pneumatic valve 43 and an electronic flowmeter 44 which are sequentially arranged along the water flow direction, the pressure regulating valve 41, the second manual valve 42, the second pneumatic valve 43 and the electronic flowmeter 44 are all connected to the water pipe 40, the second metering unit 15 and the third metering unit 34 have the same structure as the first metering unit 14, and the second metering unit 15, the third metering unit 34 and the first metering unit 14 are connected with a water supply pipe 45 together; the first metering units 14 are provided with three groups and are respectively connected with the first atomizer 12 at the top end in the combination chamber 4 and the first atomizers 12 at the two opposite sides in the combination chamber 4.

As can be seen from the above description, the external pressure water source sequentially enters the water pipes 40 in the first metering unit 14, the second metering unit 15 and the third metering unit 34 through the water supply pipe 45, and then enters the first atomizing nozzle 12, the second atomizing nozzle 13 and the water replenishing nozzle 33 respectively to be sprayed out in the form of water mist; wherein, the pressure regulating valve 41, the second manual valve 42, the second pneumatic valve 43 and the electronic flowmeter 44 in the three metering units are used for automatically controlling the water supply amount and opening and closing of the corresponding spray heads according to actual requirements; by providing the first metering units 14 in three groups, the functions of controlling the amount of water and opening and closing of the three groups of first atomizer heads 12 at the top end and opposite sides of the joint chamber 4, respectively, are achieved.

A method for slaked lime production comprising the steps of:

firstly, testing according to the activity of quicklime to obtain the specific gravity of an effective component calcium oxide, setting the blanking value of a quicklime measuring bin 1, and conveying the quicklime into a combining chamber 4 in the form of dust through compressed air output by a pneumatic conveying system;

secondly, after the quicklime in the form of dust enters the combination chamber 4, spraying quantitative water mist to carry out preliminary contact digestion reaction with the quicklime in the form of dust in the combination chamber 4 through a first metering unit 14 and a first atomizing nozzle 12; most of the quicklime which is fully contacted and reacted with water falls into the collecting silo 6 for further digestion due to the action of gravity, and a small amount of the quicklime which is not fully contacted with water mist and the water mist enter the converging chamber 5 from the material conveying inclined pipe 9 along with the air flow generated by the fan 10;

thirdly, the quicklime and the water mist entering the merging chamber 5 are subjected to secondary contact digestion reaction through a second metering unit 15 and a certain amount of water mist sprayed by a second atomizing nozzle 13 arranged at the top end in the merging chamber 5 and the quicklime and the water mist entering the merging chamber 5 from the combining chamber 4; most of the quicklime fully contacted with water in the merging chamber 5 also falls to a collecting silo 6 for further digestion due to the action of gravity, and a very small amount of quicklime and water mist not fully contacted with water mist enter a cyclone separator 7 along with an air flow generated by a fan 10;

under the action of the centrifugal force and the wind flow of the cyclone separator 7 and the fan 10, the quick lime and the water mist generate violent movements such as rolling, collision and the like, the digestion speed of the quick lime is accelerated, meanwhile, the quick lime in the digestion reaction and the slaked lime generated by the digestion reaction are separated from the water vapor, and the separated slaked lime and the quick lime enter a hopper 32;

collecting slaked lime generated by the digestion of the silo 6 and incompletely-reacted quicklime to fall into a hopper 32, sucking water vapor separated in the step four to a fan 10 along with air, detecting the water loss at the outlet end of the cyclone separator 7 through a third humidity meter 37, a flow meter 39 and a second humidity meter 35, controlling the third metering unit 34 by an external control system to output the same water quantity to a water replenishing spray nozzle 33, and replenishing the water quantity of the quicklime and the slaked lime in the hopper 32 through the water replenishing spray nozzle 33 to ensure the digestion proportion of the quicklime and the water;

step six, feeding the quick lime and the slaked lime subjected to the water replenishing and secondary digestion reaction through the hopper 32 into the combined stirrer 8 for stirring and mixing, finishing the complete digestion reaction of the incompletely reacted quick lime, and feeding the generated slaked lime into the slaked lime bin 3 for collection.

Referring to fig. 1 to 5, an embodiment of the present invention is:

a slaking apparatus for slaked lime preparation, as shown in fig. 1 and 3, comprises a quicklime measuring bin 1, a slaker 2 and a slaked lime bin 3 which are communicated with each other in sequence;

as shown in fig. 1 and 3, the digester 2 comprises a combination chamber 4, a confluence chamber 5, a collection silo 6, a cyclone separator 7, a combined mixer 8 and a conveying inclined pipe 9; the bottom ends of the collection silo 6 and the cyclone separator 7 are both communicated with the top end of the combined stirrer 8, and the bottom ends of the combination chamber 4 and the confluence chamber 5 are both communicated with the top end of the collection silo 6; the upper end of the converging chamber 5 is communicated with the middle part of the combining chamber 4 through a material conveying inclined pipe 9, the middle part of the converging chamber 5 is communicated with the air inlet end of a cyclone separator 7, and the air outlet end of the cyclone separator 7 is connected with a fan 10;

as shown in fig. 1 and 3, a pneumatic conveying system for blowing the quicklime into the combining chamber 4 by using compressed air is connected between the combining chamber 4 and the discharge end of the quicklime measuring bin 1; the pneumatic transmission system comprises a compressed air source pipe 16, a first pneumatic valve 17, a first manual valve 11, a check valve 18, a transmission pipeline 19 and a distributor 20; the compressed air source pipe 16, the first pneumatic valve 17, the first manual valve 11 and the check valve 18 are sequentially connected through pipelines, two sides of the discharge end of the quicklime metering bin 1 are respectively communicated with the check valve 18 and one end of the conveying pipeline 19, the other end of the conveying pipeline 19 is connected with the distributor 20, two sides of the distributor 20 are respectively provided with a conveying branch pipe 21 with a valve, and the two conveying branch pipes 21 are respectively connected with the other group of opposite two sides of the combination chamber 4; the number of the combination chamber 4, the distributor 20, the quicklime measuring bin 1, the pneumatic conveying system and the conveying inclined pipe 9 is the same, and at least one is arranged.

As shown in fig. 1 and 3, an intermediate partition 22 is connected to the inner side of the combination chamber 4, and dispersing portions 23 are provided on both sides of the intermediate partition 22 near the conveying branch pipes 21, the dispersing portions 23 being disposed in an arc shape that is concave toward the middle of the intermediate partition 22.

As shown in fig. 1 and 3, the top end and the opposite sides in the combining chamber 4 are provided with first atomizer nozzles 12, the top end in the merging chamber 5 is provided with second atomizer nozzles 13, and the first atomizer nozzles 12 and the second atomizer nozzles 13 are respectively connected with a first metering unit 14 and a second metering unit 15.

As shown in fig. 1, the distributor 20, the collection silo 6 and the slaked lime silo 3 are all provided with a first temperature meter 24, and the collection silo 6 and the slaked lime silo 3 are all provided with a first humidity meter 25.

As shown in fig. 1 and 2, the combination mixer 8 includes a double-shaft mixer 26 and a twin-screw feeder 27 mounted on the tip of the double-shaft mixer 26; the feeding end of the double-screw feeder 27 is communicated with the bottom end of the slaker 2, the discharging end of the double-screw feeder 27 is communicated with the feeding end of the double-shaft mixer 26, a discharging pipe 28 is connected between the discharging end of the double-shaft mixer 26 and the feeding end of the slaked lime bin 3, and the discharging pipe 28 is connected with a discharging valve 29; the double-shaft mixer 26 is internally provided with a second temperature instrument 30 and a first material level instrument 31, the first material level instrument 31 is electrically connected with an external control system (not shown in the text, the whole text is the same as the first material level instrument), the output end of the external control system is electrically connected with a motor of the double-screw feeder 27, the second temperature instrument 30 is electrically connected with the input end of the external control system, and the output end of the external control system is electrically connected with the discharge valve 29.

As shown in fig. 1 and 4, the top end of the combined mixer 8 is provided with a hopper 32 communicated with the collection silo 6 and the bottom end of the cyclone separator 7, two inner sides of the hopper 32 are provided with a group of water replenishing nozzles 33, and the water replenishing nozzles 33 are connected with a third metering unit 34; a second hygronom 35 and a third temperature instrument 36 are arranged in the hopper 32;

as shown in fig. 1, the air outlet end of the cyclone separator 7 is connected with a third humidity meter 37, a fourth temperature meter 38 and a flow meter 39, the second humidity meter 35, the third temperature meter 36, the third humidity meter 37, the fourth temperature meter 38 and the flow meter 39 are in electrical signal connection with the input end of an external control system, and the third metering unit 34 is in electrical signal connection with the output end of the external control system.

As shown in fig. 4 and 5, the first metering unit 14 includes a water pipe 40, a pressure regulating valve 41, a second manual valve 42, a second pneumatic valve 43, and an electronic flowmeter 44, which are sequentially arranged in the water flow direction; the pressure regulating valve 41, the second manual valve 42, the second pneumatic valve 43 and the electronic flowmeter 44 are all connected to the water pipe 40, the second metering unit 15 and the third metering unit 34 have the same structure as the first metering unit 14, and the second metering unit 15, the third metering unit 34 and the first metering unit 14 are connected with a water supply pipe 45 together; the first metering units 14 are provided with three groups and are respectively connected with the first atomizer 12 at the top end in the combination chamber 4 and the first atomizers 12 at the two opposite sides in the combination chamber 4.

In conclusion, compared with the prior art, the quick lime is efficiently combined with the water mist in a dust form and is fully mixed for multiple times, so that the quick lime slaking device has the advantages of good slaking reaction effect, high slaking efficiency and environmental protection, and the quick lime metering bin 1, the first metering unit 14 and the second metering unit 15 are used for automatically providing quantitative quick lime and water for the slaker 2, so that industrial wastewater is avoided, and the subsequent slaking quality is ensured; the function of preliminary dispersion of the quicklime is achieved through a pneumatic conveying system; the effect of primary and secondary efficient combined contact reaction of water mist and quick lime is realized through the combination chamber 4, the first atomizing nozzle 12, the merging chamber 5 and the second atomizing nozzle 13, and further the effect of improving the digestion reaction efficiency and the digestion effect in the combination chamber 4 and the merging chamber 5 is realized; by the collecting silo 6, the detention time of the quick lime fully contacted with water for the first time and the second time before entering the combined stirrer 8 is prolonged, and the function of further improving the digestion effect is achieved; the cyclone separator 7 and the fan 10 play a role in accelerating the slaking speed of the quicklime and protecting the environment; the combination of the mixer 8 and the slaked lime silo 3 further improves the efficiency and effect of the digestion reaction.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.