阅读说明：本技术 一种用于甲酸钠干燥尾气的湿法除尘系统 (A kind of wet method dedusting system for the dry tail gas of sodium formate ) 是由 王存申 赵希合 于 2019-07-29 设计创作，主要内容包括：本发明涉及一种用于甲酸钠干燥尾气的湿法除尘系统,通过文丘里管湿式除尘、洗涤塔二级除尘,控制洗涤液比重或洗液中甲酸钠含量,进行补充置换,以达到连续洗涤除尘的目的。本发明提供的一种用于甲酸钠干燥尾气湿法除尘系统,其工艺为物理溶解,分为两级洗涤——文丘里除尘器洗涤槽洗涤和洗涤塔洗涤。除尘系统构成：文丘里除尘器、洗涤槽、洗涤槽循环泵、洗涤塔、洗涤塔循环泵和尾气风机。(The present invention relates to a kind of wet method dedusting systems for the dry tail gas of sodium formate to control formic acid sodium content in cleaning solution specific gravity or washing lotion, supplement displacement be carried out, to achieve the purpose that continuous cleaning dust by Venturi tube wet dust removal, scrubbing tower two-stage dust removal.Provided by the invention a kind of for the dry tail gas wet method dust pelletizing system of sodium formate, technique is physical dissolution, is divided into two-stage washing --- venturi scrubber washs trough washery and scrubbing tower washing.Dust pelletizing system is constituted: venturi scrubber, sink, sink circulating pump, scrubbing tower, scrubbing tower circulating pump and exhaust fan.)

1. a kind of wet method dedusting system for the dry tail gas of sodium formate, comprising: venturi scrubber, sink, scrubbing tower, It is characterized in that, the venturi scrubber, sink, scrubbing tower are sequentially connected, between the sink and venturi scrubber It is provided with sink circulating pump, scrubbing tower circulating pump, institute are provided between the wash tower bottoms and the spray equipment of scrubbing tower The tower top for stating scrubbing tower is connected by exhaust fan with the external world.

2. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that described to be used for first The wet method dedusting system of the dry tail gas of sour sodium is whole negative pressure system.

3. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that described to be used for first The interior negative pressure of the wet method dedusting system of the dry tail gas of sour sodium is 7-8KPa.

4. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that the tail gas wind The exhausting mode of machine is negative pressure exhausting.

5. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that the sink 100~105m of pump flow³30-50 meters of/h, lift.

6. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that the scrubbing tower The packing section thick greater than 1 meter is provided on spray head.

7. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that scrubbing tower circulation Pump discharge 50m³30-50 meters of/h, lift.

8. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that the venturi Spray head is provided in the trunnion of pipe.

9. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that the scrubbing tower Interior spray head presses 5~7 spray heads in center and annular distribution, and installation site is at upward 2.0~2.1 meters of air inlet.

10. the wet method dedusting system for the dry tail gas of sodium formate as described in claim 1, which is characterized in that sink follows Ring liquor ratio weight 1.00-1.05, scrubbing tower circulation fluid specific gravity is less than 1.01；Moisturizing is introduced into scrubbing tower, overflow to sink.

Technical field

The invention belongs to Environmental-protecting dust-removing technology fields, and in particular to a kind of wet dedusting system for the dry tail gas of sodium formate System controls formic acid sodium content in cleaning solution specific gravity or washing lotion by Venturi tube wet dust removal, scrubbing tower two-stage dust removal, carries out Supplement displacement, with the technique for reaching continuous cleaning dust.

Background technique

Disclosing the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without certainty It is considered as recognizing or implying in any form that information composition has become existing skill well known to persons skilled in the art Art.

In domestic sodium formate production process, fluidized bed or gas flow dryer, spiral shell are mostly used for the drying of solid sodium formate Drier etc. is revolved, in addition for there is dust in tail gas to take out of, such as the production technologies such as fluidized bed or gas flow dryer, in drying On tails dedusting, the dry types such as bag-type dust (dry method) dedusting is mostly used.Dry method dust mode must increase the solid powder under removing Add subsequent treatment process.

And current wet method dedusting system, such as: patent CN201710558240.7 discloses a kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system and processing method, the composition of system includes preliminary defluorinate subsystem and spray scrubber defluorinate point is System；The composition of preliminary defluorinate subsystem includes cleaning solution circulating collection slot, is arranged on cleaning solution circulating collection slot inlet exhaust gas Venturi scrubber and offgas outlet on straight tube washer and detergent circulator；Spray scrubber defluorinate subsystem It is made of spray scrubber and scrubbing tower circulating pump, spray scrubber upper space designs spray thrower and demister, lower space Design has washing liquid pool and distributor.

Patent CN206676182U discloses a kind of phosphoric acid tail gas processing equipment, including extraction tank, and the top of extraction tank is logical It is connect with the entrance of Venturi tube, the outlet venturi circulating slot of Venturi tube, is internally provided in Venturi tube The top of one spray structure, venturi circulating slot is provided with washing tank, is internally provided with the second spray structure in washing tank, washes The top for washing tank is connected by the bottom gas inlet of first class purification letter shoot road and scrubbing tower, is arranged in the inside of scrubbing tower There is third spray structure, the middle and lower part of scrubbing tower is connected with process water conveyance conduit, and the top of scrubbing tower is provided with tail gas discharge Mouthful, tail gas outlet is connect by secondary purification letter shoot road with tail gas funnel.

All there is apparatus structure complexity, the high problem of operating cost in above-mentioned system, it is difficult to meet the dry tail gas of sodium formate The requirement of high-effective dust-removing.

Summary of the invention

In order to overcome the above problem, the present invention provides one kind for the dry tail gas wet method dust pelletizing system of sodium formate, this is System makes full use of the physical property of sodium formate, using second level water washing technique, so that dry tail gas dust is dissolved in water, reaches and efficiently remove The purpose of dirt.In addition, total system is liquid conveying, subsequent treatment process not will increase.

To realize the above-mentioned technical purpose, The technical solution adopted by the invention is as follows:

A kind of wet method dedusting system for the dry tail gas of sodium formate, comprising: venturi scrubber, sink, scrubbing tower, The venturi scrubber, sink, scrubbing tower are sequentially connected, and washing is provided between the sink and venturi scrubber Slot circulating pump is provided with scrubbing tower circulating pump between the wash tower bottoms and the spray equipment of scrubbing tower, the scrubbing tower Tower top is connected by exhaust fan with the external world.

The wet method dedusting system of the application is the physical attribute soluble easily in water based on sodium formate solid, is washed using second level The mode of continuous dedusting, this system on dust removing effects (up to 97% or more) better than dry method dust (efficiency up to 95%), this is right Strong impetus can be played in the improvement of manufacturing enterprise's environmental protection performance.

In some embodiments, the wet method dedusting system for the dry tail gas of sodium formate is whole negative pressure system.It is logical Negative pressure exhausting is crossed, so that dust laden air enters in water；Meanwhile negative pressure makes circulation whirlpool in the water level rising space when detaching water level Flowing plate, so that dust laden air and water are sufficiently mixed, to achieve the purpose that high-effective dust-removing.

If interior negative pressure is too small, dust removing effects are poor, if negative pressure is excessively high, equipment manufacturing costs high to the intensity requirement of equipment Excessively high, therefore, in some embodiments, the interior negative pressure of the wet method dedusting system for the dry tail gas of sodium formate is 7- 8KPa can satisfy the dust removing effects under different produce loads, guarantee dust removing effects up to 97% or more.

The application does not make special restriction to the exhausting mode of exhaust fan, in some embodiments, the tail gas wind The exhausting mode of machine is negative pressure exhausting, and discharging tail gas declines air pressure in deduster, and tail gas weakens, and forms a negative pressure Area, air flow into deduster since draught head compensates, and equipment installation is simple, operating cost is low.

In some embodiments, the sink pump flow 100m³30-50 meters of/h, lift ensure that level-one washing follows Circular rector.

In some embodiments, it is provided with the packing section thick greater than 1 meter on the scrubbing tower spray head, plays and sufficiently receives water Effect avoids fan belt water.

In some embodiments, scrubbing tower pump flow 50m³30-50 meters of/h, lift ensure second level wash cycle amount.

In some embodiments, spray head is provided in the trunnion of the Venturi tube.Spray head presses center in the scrubbing tower With 5 spray heads of annular distribution, installation site is at upward 2.0 meters of air inlet.The above installation, which meets to contact with tail gas, adequately to be wanted It asks, improves efficiency of dust collection.

In some embodiments, sink circulation fluid specific gravity 1.00-1.05, scrubbing tower circulation fluid specific gravity is less than 1.01；It mends Water is introduced into scrubbing tower, and overflow to sink makes full use of water resource.

The beneficial effects of the present invention are:

(1) the present invention provides one kind for the dry tail gas wet method dust pelletizing system of sodium formate, can provide for market a kind of clear Clean, environmentally friendly, pollution-free, efficient dust removal method.

(2) the present invention provides one kind for the dry tail gas wet method dust pelletizing system of sodium formate, reaches by second level carrying out washing treatment Effect, reduces the treatment process in later period.

(3) the present invention provides a kind of improvement sodium formates as the method and system of the execute-in-place environment of solid product.

(4) operating method of the application it is simple, it is at low cost, have universality, be easy to large-scale production.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.

Fig. 1 is embodiment 1 for the dry tail gas wet method dust pelletizing system flow chart of sodium formate.

Wherein, 1. venturi scrubbers, 2. Venturi tubes, 3. sinks, 4. sink spray heads, 5. sink circulating pumps, 6. Scrubbing tower, 7. washing tower packings, 8. scrubbing tower spray heads, 9. scrubbing tower moisturizings, 10. scrubbing tower liquidometers, 11. scrubbing towers circulation Pump, 12. exhaust fans.

Specific embodiment

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used in this application have logical with the application person of an ordinary skill in the technical field The identical meanings understood.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

As background technique is introduced, subsequent place must be increased to the solid powder under removing for dry method dust mode Reason process, the problem for causing complex disposal process, equipment cost high.Therefore, the present invention proposes a kind of for the dry tail of sodium formate Gas wet method dedusting system, technique are physical dissolution, are divided into two-stage washing --- venturi scrubber washs trough washery and washing Tower washing.Dust pelletizing system is constituted: venturi scrubber, sink, sink circulating pump, scrubbing tower, scrubbing tower circulating pump and tail Gas blower.

Preferably, this system is atomized cleaning solution using the spiral nozzle being installed at Venturi tube larynx section, ejection with pressure Dust contained by the tail gas that dissolution passes through Venturi tube rapidly.

Preferably, sink circulating pump and scrubbing tower pump flow and lift meet washing and require.

Preferably, scrubbing tower middle and upper part filler plays the role of crucial receipts water, prevents exhaust fan band water.

Wet method dedusting system of the application for the dry tail gas of sodium formate, is produced based on sodium formate, dry materials process It is that need carry out vent gas treatment after the drying process taken out of using pneumatic conveying drying or fluidized bed drying etc. with sodium formate dust A kind of efficient process system.The dust pelletizing system is recycled by Venturi tube, sink, sink circulating pump, scrubbing tower, scrubbing tower Pump, exhaust fan composition, cleaning solution wash dry tail gas under being sprayed from Venturi tube inner screw jet nozzle by circulating pump pressurization for the first time, so The spiral nozzle secondary washing being distributed in a ring by scrubbing tower, tail gas is through exhaust fan outlet drain after washing.

Preferably, which is whole negative pressure system, can share negative pressure system with drying process, defeated in order to tail gas It send, dedusting step by step.

Preferably, exhaust fan: for the installation of system tail portion, suction pressure mode provides negative pressure, tail gas wind for dust pelletizing system Electromechanical machine should install frequency conversion adjustment device, and negative pressure should be controlled in 7-8KPa in system, to meet the dedusting under different produce loads Effect.

Preferably, Venturi tube, sink, sink circulating pump constitute level-one cleaning dust.Sink pump flow 100m³30-50 meters of/h, lift ensure level-one wash cycle amount.

Preferably, scrubbing tower, scrubbing tower circulating pump constitute secondary cycle cleaning dust.It should be arranged on scrubbing tower spray head and be greater than 1 meter of thick packing section plays the effect for sufficiently receiving water, avoids fan belt water.Scrubbing tower pump flow 50m³/ h, lift 30- 50 meters, ensure second level wash cycle amount.

Preferably, spiral nozzle: meet spray radius requirement；Spray head is mounted in trunnion in Venturi tube, in scrubbing tower Spray head presses 5 spray heads in center and annular distribution, and installation site is at upward 2.0 meters of air inlet.The above installation meets to be connect with tail gas Touching adequately requires.

Preferably, sink circulation fluid specific gravity 1.00-1.05, scrubbing tower circulation fluid specific gravity is less than 1.01；Moisturizing is introduced into Scrubbing tower, overflow to sink, makes full use of water resource.

It is illustrated below by way of technical solution of the specific embodiment to the application.