阅读说明：本技术 干法排渣流化床气化反应装置 (dry-method deslagging fluidized bed gasification reaction device ) 是由 纪明俊 李寒旭 武成利 高圣涛 于 2019-08-23 设计创作，主要内容包括：本发明公开了干法排渣流化床气化反应装置,包括外壳体,所述外壳体顶壁固定设有向下开口的内筒,所述外壳体顶壁还贯穿设置有向所述内筒内部空间开口的进料口,所述外壳体内腔下端设有分布器和与所述分布器连接的气化剂入口,所述外壳体的底部设有排渣口,所述排渣口连接有排渣系统,所述外壳体的侧壁还设有排气口,所述排气口连接有过滤系统,所述排渣系统包括旋转料斗和冷却室,所述旋转料斗包括位于内腔的转动轴,所述转动轴上设有若干叶轮,且所述转动轴与位于旋转料斗外侧的驱动装置电连接,所述旋转料斗上端设有料斗入口,所述旋转料斗下端设有料斗出口。本发明提高了碳转化率,且提高了操作和运行稳定性。(The invention discloses a dry-method deslagging fluidized bed gasification reaction device, which comprises an outer shell, wherein an inner cylinder with a downward opening is fixedly arranged on the top wall of the outer shell, the top wall of the outer shell is also provided with a feed inlet which is opened towards the inner space of the inner cylinder in a penetrating way, the lower end of the inner cavity of the outer shell is provided with a distributor and a gasification agent inlet which is connected with the distributor, the bottom of the outer shell is provided with a slag discharge port which is connected with a slag discharge system, the side wall of the outer shell is also provided with an exhaust port, the exhaust port is connected with a filtering system, the slag discharging system comprises a rotating hopper and a cooling chamber, the rotating hopper comprises a rotating shaft positioned in an inner cavity, a plurality of impellers are arranged on the rotating shaft, and the rotating shaft is electrically connected with a driving device positioned on the outer side of the rotating hopper, a hopper inlet is formed in the upper end of the rotating hopper, and a hopper outlet is formed in the lower end of the rotating hopper. The invention improves the carbon conversion rate and improves the operation and running stability.)

1. Dry slagging fluidized bed gasification reaction device, its characterized in that, including the shell body, the fixed inner tube that is equipped with downward opening of shell body roof, the shell body roof still runs through to be provided with to inner tube inner space open-ended feed inlet, shell body inner chamber lower extreme be equipped with the distributor and with the gasification agent entry that the distributor is connected, the bottom of shell body is equipped with row cinder notch, it is connected with slag removal system to arrange the cinder notch, the lateral wall of shell body still is equipped with the gas vent, the gas vent is connected with filtration system.

2. The dry slagging fluidized bed gasification reaction device according to claim 1, wherein the slagging system comprises a rotary hopper and a cooling chamber, the rotary hopper comprises a rotating shaft positioned in the inner cavity, the rotating shaft is provided with a plurality of impellers and is electrically connected with a driving device positioned outside the rotary hopper, the upper end of the rotary hopper is provided with a hopper inlet, the hopper inlet is connected with the slagging port of the outer shell, the lower end of the rotary hopper is provided with a hopper outlet, and the hopper outlet is connected with the cooling chamber;

The cooling chamber includes the transportation area, the transportation area runs through to be located the cooling chamber export of cooling chamber one side, the transportation area is split into upper chamber and lower chamber with the cooling chamber, the hopper export with upper chamber intercommunication, lower chamber one side is equipped with coolant liquid entry and coolant liquid export respectively.

3. the dry slagging fluidized bed gasification reaction apparatus according to claim 2, wherein the upper chamber top wall is provided with a spraying system;

preferably, the spraying liquid of the spraying system is water and/or gas;

Preferably, the lower chamber is filled with a cooling liquid, which is water or an aqueous solution mixed with a coolant.

4. The dry slagging fluidized bed gasification reaction device according to claim 1, wherein the distributor comprises a plurality of horizontal pipes and vertical pipes, and the connecting part of the horizontal pipes and the vertical pipes is provided with a gas injection pipe.

5. the dry slagging fluidized bed gasification reaction device according to claim 3, wherein the gas injection pipe comprises a gas injection pipe inlet at the lower end, the lower end of the gas injection pipe is conical, a floating ball is arranged in the inner cavity of the gas injection pipe, and a plurality of through holes are arranged on the top wall of the gas injection pipe.

6. The dry slagging fluidized bed gasification reaction apparatus according to claim 1, wherein the filtering system comprises a filtering chamber and a cleaning chamber, wherein the filtering chamber and the cleaning chamber are directly provided with partition plates, a plurality of filtering screens are arranged in the filtering chamber, one end of each filtering screen is connected with the side wall of the filtering chamber, the other end of each filtering screen penetrates through the partition plate, one side of the filtering chamber is further provided with a filtering chamber air inlet pipe and a filtering chamber air outlet pipe, the filtering chamber air inlet pipe is positioned below the filtering screen, and the filtering chamber air outlet pipe is positioned below the filtering screen;

The cleaning chamber is internally provided with pull rods matched with the filter screens in number, one ends of the pull rods are fixedly connected with the filter screens, one ends of the pull rods, far away from the filter screens, penetrate through the side wall of the cleaning chamber and are electrically connected with a driving device positioned outside the cleaning chamber, the outer side of the top wall of the cleaning chamber is provided with a motor, an output shaft of the motor is connected with a fan, the fan is positioned in the inner cavity of the cleaning chamber, and the top wall of the cleaning chamber is provided with a plurality of air holes;

The clean room lower extreme with the lower extreme of filter chamber all with return the sediment pipe intercommunication, return the sediment pipe with be located return the sediment mouth intercommunication on the shell body lateral wall, filter chamber intake pipe on the filter chamber with gas vent intercommunication on the shell body.

7. the dry slagging fluidized bed gasification reaction apparatus according to claim 5, wherein a sealing member is provided at a joint of the filter screen and the partition plate.

8. The dry slagging fluidized bed gasification reaction device according to claim 5, wherein a brush is further arranged at the connecting part of the filter screen and the partition plate, and the brush is positioned at the lower end of the filter screen and fixed on the partition plate.

9. The dry slagging fluidized bed gasification reactor according to any of claims 1 to 7, wherein a buffer plate is further provided in the inner chamber of the outer shell, and the buffer plate is located above the distributor.

10. The dry slagging fluidized bed gasification reaction apparatus according to claim 1, wherein the gasification agent entering the outer casing from the gasification agent inlet is one or more of air, oxygen, water vapor or hydrogen.

Technical Field

The invention relates to the technical field of coal gasification, in particular to a dry-method deslagging fluidized bed gasification reaction device.

background

The semi-dry ash fusion slag-discharging mode is characterized in that a local high-temperature region is formed in the reactor, and an agglomeration flow field is formed at the same time, so that particles are discharged through an annular slag discharging pipe after being collided and bonded with each other. Under such operation conditions, the slag discharging pipe is in severe working conditions of high temperature and high pressure, molten state ash adhesion and the like for a long time, the service life of the slag discharging pipe is seriously influenced, and therefore the slag discharging pipe must be frequently replaced or maintained, and the production cost is greatly increased due to the fact that the used materials are expensive, the maintenance and repair cost is high, and the parking frequency is too high.

according to the current industrial application and operation of fluidized bed gasification, it is found that the carbon conversion rate of fluidized bed gasification technology is always low, and it is difficult to reach the carbon conversion rate of 99% in entrained flow and fixed bed gasification reactors because the fluidized bed gasification technology is operated at a reaction temperature lower than the melting point of the fuel ash and the residence time is lower than that of the fixed bed.

disclosure of Invention

Based on the technical problems in the prior art, the invention provides a dry-method deslagging fluidized bed gasification reaction device, which improves the carbon conversion rate and improves the operation and running stability.

The invention provides a dry-method deslagging fluidized bed gasification reaction device which comprises an outer shell, wherein an inner cylinder with a downward opening is fixedly arranged on the top wall of the outer shell, a feed inlet with an opening towards the inner space of the inner cylinder is further arranged on the top wall of the outer shell in a penetrating mode, a distributor and a gasifying agent inlet connected with the distributor are arranged at the lower end of the inner cavity of the outer shell, a deslagging port is arranged at the bottom of the outer shell and connected with a deslagging system, an exhaust port is further arranged on the side wall of the outer shell and connected with a filtering system.

preferably, the slag discharging system comprises a rotary hopper and a cooling chamber, the rotary hopper comprises a rotating shaft positioned in an inner cavity, a plurality of impellers are arranged on the rotating shaft, the rotating shaft is electrically connected with a driving device positioned outside the rotary hopper, a hopper inlet is arranged at the upper end of the rotary hopper, the hopper inlet is connected with a slag discharging port of the outer shell, a hopper outlet is arranged at the lower end of the rotary hopper, and the hopper outlet is connected with the cooling chamber;

the cooling chamber includes the transportation area, the transportation area runs through to be located the cooling chamber export of cooling chamber one side, the transportation area is split into upper chamber and lower chamber with the cooling chamber, the hopper export with upper chamber intercommunication, lower chamber one side is equipped with coolant liquid entry and coolant liquid export respectively.

Preferably, the top wall of the upper chamber is provided with a spraying system

preferably, the spray liquid of the spray system is water and/or gas.

Preferably, the lower chamber is filled with a cooling liquid, which is water or an aqueous solution mixed with a coolant.

Preferably, the distributor comprises a plurality of transverse pipes and longitudinal pipes, and the connecting parts of the transverse pipes and the longitudinal pipes are provided with air injection pipes.

preferably, the gas ejector comprises a gas ejector inlet positioned at the lower end, the lower end of the gas ejector is conical, a floating ball is arranged in an inner cavity of the gas ejector, and a plurality of through holes are formed in the top wall of the gas ejector.

Preferably, the filtering system comprises a filtering chamber and a cleaning chamber, partition plates are directly arranged on the filtering chamber and the cleaning chamber, a plurality of filtering screens are arranged in the filtering chamber, one end of each filtering screen is connected with the side wall of the filtering chamber, the other end of each filtering screen penetrates through the partition plate, a filtering chamber air inlet pipe and a filtering chamber air outlet pipe are further arranged on one side of the filtering chamber, the filtering chamber air inlet pipe is located below the filtering screen, and the filtering chamber air outlet pipe is located below the filtering screen;

the cleaning chamber is internally provided with pull rods matched with the filter screens in number, one ends of the pull rods are fixedly connected with the filter screens, one ends of the pull rods, far away from the filter screens, penetrate through the side wall of the cleaning chamber and are electrically connected with a driving device positioned outside the cleaning chamber, the outer side of the top wall of the cleaning chamber is provided with a motor, an output shaft of the motor is connected with a fan, the fan is positioned in the inner cavity of the cleaning chamber, and the top wall of the cleaning chamber is provided with a plurality of air holes;

The clean room lower extreme with the lower extreme of filter chamber all with return the sediment pipe intercommunication, return the sediment pipe with be located return the sediment mouth intercommunication on the shell body lateral wall, filter chamber intake pipe on the filter chamber with gas vent intercommunication on the shell body.

Preferably, a sealing element is arranged at the joint of the filter screen and the partition plate.

preferably, the filter screen with the connecting portion of division board still is equipped with the brush, the brush is located the lower extreme of filter screen just fixes on the division board.

Preferably, a buffer plate is further arranged in the inner cavity of the outer shell, and the buffer plate is located above the distributor.

preferably, the gasifying agent entering the outer shell from the gasifying agent inlet is one or more of air, oxygen, water vapor or hydrogen.

Compared with the prior art, the invention has the beneficial technical effects that:

(1) After the materials enter the outer shell, the gasification agent sprayed from the distributor can be fully contacted with the materials, so that the gasification degree of the materials is greatly improved, and the gasification efficiency is improved;

(2) a floating ball is arranged in the gas nozzle, and when the gasification agent is not added, the floating ball can seal the inlet of the gas nozzle, so that particles or gas in the outer shell are prevented from flowing back along the distributor;

(3) A filtering system is arranged on one side of the outer shell, particles in the coal gas can be intercepted, and the coal gas is conveyed into the outer shell again for repeated gasification, so that the gasification rate of the material is further improved, and resources are saved;

(4) The cleaning chamber arranged on one side of the filtering chamber can clean the filtering net in the filtering chamber, the cleaning can be realized without disassembling the filtering net, and the automation degree is high;

(5) the buffer plate arranged in the outer shell can buffer falling materials, so that the full contact between the materials and the gasifying agent is further improved;

(6) The slag discharging system comprises a rotary hopper, continuous discharge of ash slag is realized, a cooling chamber arranged at the lower end of the rotary hopper can cool the discharged ash slag, and the problem of high requirement on contact materials due to overhigh temperature of the ash slag is solved.

Drawings

FIG. 1 is a schematic structural diagram of a dry slagging fluidized bed gasification reaction apparatus according to the present invention;

FIG. 2 is a schematic structural diagram of a slag discharge system according to the present invention;

FIG. 3 is a schematic diagram of a filtration system according to the present invention;

FIG. 4 is a schematic structural diagram of an air intake system according to the present invention;

Fig. 5 is a schematic structural view of a gas lance according to the present invention.

In the figure: 1-outer shell, 2-inner cylinder, 3-heat preservation layer, 4-exhaust port, 5-filtering system, 51-pull rod, 52-cleaning chamber, 53-slag return pipe, 54-filtering chamber air inlet pipe, 55-filtering screen, 56-filtering chamber, 57-filtering chamber air outlet pipe, 58-air vent, 59-motor, 510-fan, 6-slag return port, 7-buffer plate, 8-distributor, 81-horizontal pipe, 82-longitudinal pipe, 83-air injection pipe, 831-air injection pipe inlet, 832-floating ball, 833-through hole, 9-rotating hopper, 91-hopper inlet, 92-rotating shaft, 93-impeller, 94-cooling chamber, 95-upper chamber, 96-cooling chamber outlet, 97-conveying belt, 97-air outlet, V-fan, 98-lower chamber, 99-coolant outlet, 910-coolant inlet, 911-hopper outlet;

A-a feed inlet, a B-a coal gas outlet, a C-gasifying agent inlet and a D-a slag discharge port.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

referring to fig. 1-5, the dry slagging fluidized bed gasification reaction device provided by the invention comprises an outer shell, wherein an inner cylinder with a downward opening is fixedly arranged on the top wall of the outer shell, a feed inlet with an opening towards the inner space of the inner cylinder is further arranged on the top wall of the outer shell in a penetrating manner, a distributor and a gasification agent inlet connected with the distributor are arranged at the lower end of the inner cavity of the outer shell, a slagging port is arranged at the bottom of the outer shell, the slagging port is connected with a slagging system, an exhaust port is further arranged on the side wall of the outer shell, and the exhaust port is connected. The material gets into in the shell body from the feed inlet, and the gasification agent that sprays from the distributor through high temperature cooperation makes the material take place the gasification, and the coal gas that the gasification produced gets into filtration system from the gas vent and filters, and the granule that filters gets off gets back the cinder notch again and gets into in the shell body and gasify repeatedly through going back, has improved the utilization ratio of resource, and the cinder behind the gasification gets into slag removal system from the row cinder notch of bottom in the shell body.

the slag discharging system comprises a rotary hopper and a cooling chamber, the rotary hopper comprises a rotating shaft positioned in an inner cavity, a plurality of impellers are arranged on the rotating shaft, the rotating shaft is electrically connected with a driving device positioned outside the rotary hopper, a hopper inlet is arranged at the upper end of the rotary hopper, the hopper inlet is connected with a slag discharging port of the outer shell, a hopper outlet is arranged at the lower end of the rotary hopper, and the hopper outlet is connected with the cooling chamber;

The cooling chamber includes the transportation area, the transportation area runs through to be located the cooling chamber export of cooling chamber one side, the transportation area is split into upper chamber and lower chamber with the cooling chamber, the hopper export with upper chamber intercommunication, lower chamber one side is equipped with coolant liquid entry and coolant liquid export respectively.

The utility model provides a slag discharging system includes rotatory hopper, has realized the continuous emission of lime-ash, because the temperature in the shell is higher, the lime-ash requires very high to the material of device if directly transporting away, consequently this application sets up a cooling chamber in the below of rotatory hopper, can be equipped with spray system through last cavity roof wall, spray system's spray liquid is water and/gas, transports the limit cooling to lime-ash, can also be full of the coolant liquid in the cavity down, the coolant liquid is water or mixes the aqueous solution of coolant, and the coolant liquid in the cavity adopts the endless mode down, and this mode is the same with the principle of heat exchanger.

The distributor comprises a plurality of transverse pipes and longitudinal pipes, and the connecting parts of the transverse pipes and the longitudinal pipes are provided with air injection pipes.

The air ejector pipe comprises an air ejector pipe inlet positioned at the lower end, the lower end of the air ejector pipe is conical, a floating ball is arranged in an inner cavity of the air ejector pipe, and a plurality of through holes are formed in the top wall of the air ejector pipe. When the plurality of air injection pipes on the distributor inject the gasifying agent into the outer shell, falling materials can be blown to generate the boiling effect of the materials, so that the contact area and the contact time of the materials and the gasifying agent are improved, the materials are gasified more sufficiently, ash and slag generated by gasification fall down from the blank of the distributor, and then enter the slag discharge system from the slag discharge port at the bottom.

the filtering system comprises a filtering chamber and a cleaning chamber, partition plates are directly arranged on the filtering chamber and the cleaning chamber, a plurality of filtering nets are arranged in the filtering chamber, one ends of the filtering nets are connected with the side wall of the filtering chamber, the other ends of the filtering nets penetrate through the partition plates, a filtering chamber air inlet pipe and a filtering chamber air outlet pipe are further arranged on one side of the filtering chamber, the filtering chamber air inlet pipe is located below the filtering nets, and the filtering chamber air outlet pipe is located below the filtering nets;

The cleaning chamber is internally provided with pull rods matched with the filter screens in number, one ends of the pull rods are fixedly connected with the filter screens, one ends of the pull rods, far away from the filter screens, penetrate through the side wall of the cleaning chamber and are electrically connected with a driving device positioned outside the cleaning chamber, the outer side of the top wall of the cleaning chamber is provided with a motor, an output shaft of the motor is connected with a fan, the fan is positioned in the inner cavity of the cleaning chamber, and the top wall of the cleaning chamber is provided with a plurality of air holes;

The clean room lower extreme with the lower extreme of filter chamber all with return the sediment pipe intercommunication, return the sediment pipe with be located return the sediment mouth intercommunication on the shell body lateral wall, filter chamber intake pipe on the filter chamber with gas vent intercommunication on the shell body.

The filter chamber mainly intercepts particles which are not completely gasified in the coal gas discharged from the outer shell, and then the particles are conveyed into the outer shell again for repeated gasification, so that the full utilization of materials is ensured, the filter screen in the filter chamber is mainly cleaned in the cleaning chamber, a control program can be designed, after the filter screen in the filter chamber is filtered for one end, the pull rod is driven by the driving device to move towards the direction far away from the cleaning chamber, the pull rod drives the filter screen to move until the filter screen is completely positioned in the cleaning chamber, and a part of the particles at the lower end of the filter screen can be removed due to the fact that the contact part of the filter screen and the partition plate is provided with the sealing ring, so that meshes of the filter screen are prevented from being blocked in the particle removing process; in order to further improve the degree of automation, set up two sets of filter screens at least, when wasing at every turn, wash one by one from the bottom up, when the lower extreme was washd, all the other filter screens still can continue to filter, and the filter screen after the cleanness resets, carries out the filtration work of next filter screen again, can guarantee like this that when clean filter screen, the filter chamber still can continue work, has realized continuous production.

in order to prevent that coal gas from getting into clean room, then discharge from the bleeder vent of clean room upper end, this application filter screen with the junction of division board is equipped with the sealing member, and at clear in-process, the pull rod was kept away from to the filter screen one end still with the sealing member contact, guarantee the filter screen can with the contact site of division board is airtight.

In order to further improve the clean effect of filter screen, at the filter screen with the connecting portion of division board still are equipped with the brush, the brush is located the lower extreme of filter screen just fixes on the division board, and when the filter screen moved in to the clean room, the brush cleaned the filter screen, can also set up the brush in the clean room in addition, perhaps all set up the brush in clean room and the filter room.

In order to further improve the contact time of the gasifying agent and the materials and improve the gasification efficiency, a buffer plate is also arranged in the inner cavity of the outer shell and is positioned above the distributor.

The gasifying agent entering the outer shell from the gasifying agent inlet is one or more of air, oxygen, water vapor or hydrogen.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.