CN219519998U - Environment-friendly active coke desulfurization ash recovery device - Google Patents

Abstract

The utility model discloses an environment-friendly active coke desulfurization ash recovery device which comprises a raw coal bin, a first feeder and a coal mill, wherein the raw coal bin is arranged on one side of the first feeder, the coal mill is arranged on the other side of the first feeder, the coal mill is connected with the lower side of one end of the first feeder through a coal dropping pipe, the coal dropping pipe stretches into the top of the coal mill, the coal dropping pipe is connected with a suction and discharge vehicle through a recovery device, the recovery device is connected with an air blowing source through a pipeline, a coal collecting pipe is arranged on the outer side of the coal dropping pipe at the inner top of the coal mill, the coal collecting pipe is connected with a dust collector, the dust collector is connected with a main exhaust fan through an air pipe, the coal dust bin is arranged on one side of the dust collector, the dust collector is connected with the coal dust bin through a second feeder, and the lower side of the coal dust bin is provided with an air blowing tank. The utility model is in a full negative pressure state during production by the coal mill, no dust escapes in the process of preparing the desulfurized active coke dust-removing ash, and active coke desulfurized ash mixed raw coal is effectively applied to production.

Description

Environment-friendly active coke desulfurization ash recovery device

Technical Field

The utility model relates to the technical field of desulfurization, in particular to an environment-friendly active coke desulfurization ash recovery device.

Background

The active coke flue gas desulfurization process adopts active coke as a desulfurizing agent to adsorb and remove sulfur dioxide in flue gas, and can realize the recovery of sulfur resources at the same time of desulfurizing, thereby having good environmental protection benefit and economic benefit. The active coke desulfurization ash has unstable properties, if the active coke desulfurization ash is stacked at will, a large amount of land is occupied, so that groundwater is polluted, and the active coke desulfurization ash can fly everywhere and pollute the air once blown by wind due to the small density and light weight of the active coke desulfurization ash; meanwhile, because the calcium sulfite contains a large amount of calcium sulfite, if the calcium sulfite is improperly utilized, secondary pollution can be caused. The current research on the desulfurization ash at home and abroad has the following aspects: 1. the application of the desulfurized fly ash in the cement industry mainly comprises two aspects, namely, the direct calcination is used for replacing cement clinker, and the other aspect is used as a cement retarder or additive; 2. the application of the desulfurized fly ash in the brick making is mainly to prepare sound insulation bricks, heat insulation bricks, double brick-free bricks, baked bricks and the like; 3. the desulfurized fly ash is used for agricultural production, and the application of the desulfurized fly ash in agriculture mainly comprises the steps of carrying out soil modification by virtue of acid-base neutralization and promoting crop growth by virtue of the fact that the desulfurized fly ash contains a large amount of alkaline oxides; 4. other utilization ways of the desulfurization ash, besides the utilization in the two fields, some scholars also research some applications of the desulfurization ash in the aspects of road construction, use as a wet flue gas desulfurizing agent, backfill mine and the like. The above approaches are used, with no exception, to treat the desulphurized ash as waste.

In the prior art, the active coke desulfurization ash is not effectively recycled in the recycling process, dust is easy to escape in the active coke desulfurization ash batching process, and secondary pollution is easy to cause.

Therefore, it is necessary to provide an environment-friendly active coke desulfurization ash recovery device, which solves the problems existing in the prior art.

Disclosure of Invention

Aiming at the problems existing in the prior art, the environment-friendly recovery device for the active coke desulfurization ash is provided, and the problems that the active coke desulfurization ash cannot be effectively recycled and the dust easily escapes in the process of proportioning the active coke desulfurization ash, so that secondary pollution is easily caused in the prior art are solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an active burnt desulfurization ash environmental protection recovery unit, including former coal bunker, first batcher and coal pulverizer, former coal bunker sets up in first batcher one side, the coal pulverizer sets up in first batcher opposite side, coal pulverizer and first batcher one end downside are through coal dropping pipe connection, coal dropping pipe stretches into the top of coal pulverizer, be connected through recovery unit between coal dropping pipe and the suction and exhaust car, recovery unit passes through the pipeline and is connected with the air blowing source, the coal dropping pipe outside at top sets up the coal collecting pipe in the coal pulverizer, the coal collecting pipe is connected with the dust collector, set up the filter bag in the dust collector, the dust collector passes through the tuber pipe and is connected with main exhaust fan, the coal dust bunker sets up in dust collector one side, the dust collector passes through the second batcher and is connected with the coal bunker, the coal bunker downside sets up the jetting jar, the air blowing source passes through the pipeline and is connected with the conveyer pipe of jetting jar.

Preferably, the recycling device comprises a desulfurization ash recycling pipe and an air ash mixer, one end of the desulfurization ash recycling pipe is connected with a coal dropping pipe between the feeder and the coal mill, the other end of the desulfurization ash recycling pipe is connected with the air ash mixer, and the air ash mixer is connected with the suction and discharge vehicle and the blowing air source through pipelines.

Preferably, the gas ash mixer comprises a first pipeline and a second pipeline, one end of the first pipeline is communicated with one end of the second pipeline, the other end of the first pipeline is connected with the suction and exhaust vehicle, a recovery pipe inlet regulating valve is arranged on the first pipeline, a nitrogen purging valve is arranged on the second pipeline, and the other end of the second pipeline is connected with a blowing air source.

Preferably, a speed reducer is arranged at the inner bottom of the coal mill and is in transmission connection with an external motor through a transmission shaft.

Preferably, a delivery pipe valve is arranged on the delivery pipe, and a blowing valve is arranged on a pipeline between the blowing air source and the delivery pipe.

Preferably, the blowing tank is connected to the nitrogen booster by a pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the desulfurization ash recovery pipe is additionally arranged at the coal dropping pipe above the coal mill, so that the direct contact of active coke desulfurization ash and air is avoided, the desulfurization ash recovery pipe is additionally arranged at the coal dropping pipe above the coal mill, the active coke desulfurization ash in the suction and discharge vehicle is uniformly mixed into raw coal by utilizing the negative pressure of the coal mill system, the raw coal is mixed and then enters the coal mill for grinding, the ground finished product enters the coal dust bin, and the pulverized product is uniformly sprayed into the blast furnace after being pressurized by the blowing tank, so that the recycling of active coke desulfurization ash resources is realized, and the recycling way of the active coke desulfurization ash is expanded.

2. According to the utility model, the batching speed of the active coke desulfurization ash is controlled by the pressure in the suction and discharge vehicle and the opening of the recovery pipe inlet regulating valve, the coal mill is in a full negative pressure state during production, no dust escapes during the process of batching the active coke desulfurization ash, and no secondary pollution is caused.

3. The recovery flow of the device of the utility model is in a full negative pressure state, no secondary pollution is generated, the device can be modified by utilizing the coal injection and pulverizing system, the investment is low, the flow is simple, and the operation is convenient.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the ash mixer according to the present utility model.

The reference numerals in the figures are:

1. raw coal bin; 2. a first feeder; 21. a coal dropping pipe; 22. a coal collecting pipe; 3. a coal mill; 4. a desulfurized ash recovery pipe; 5. a recovery pipe inlet regulating valve; 6. an air ash mixer; 61. a first pipe; 62. a second pipe; 621. a nitrogen purge valve; 7. a suction and discharge vehicle; 8. a dust collector; 9. a coal dust bin; 10. a blowing tank; 101. a delivery tube; 11. a main exhaust fan; 12. blowing an air source; 13. a speed reducer; 14. an electric motor.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

As shown in fig. 1 to 2, an environment-friendly active coke desulfurization ash recovery device comprises a raw coal bin 1, a first feeder 2 and a coal mill 3, wherein the raw coal bin 1 is arranged on one side of the first feeder 2, the coal mill 3 is arranged on the other side of the first feeder 2, the coal mill 3 is connected with the lower side of one end of the first feeder 2 through a coal dropping pipe 21, the coal dropping pipe 21 stretches into the top of the coal mill 3, the coal dropping pipe 21 is connected with a suction and discharge truck 7 through a recovery device, the recovery device is connected with an air blowing source 12 through a pipeline, a coal collecting pipe 22 is arranged on the outer side of the coal dropping pipe 21 at the inner top of the coal mill 3, the coal collecting pipe 22 is connected with a dust collector 8, the mixed coal qualified by grinding of the coal mill 3 is sucked into the dust collector 8 through negative pressure, a filter bag is arranged in the dust collector 8, the dust hopper which is filtered and reversely blown by the filter bag in the dust collector 8 and then falls into the dust collector 8 is connected with the main exhaust fan 11 through an air pipe, the main exhaust fan 11 provides negative pressure suction force for the dust collector 8, the whole production system is in a negative pressure state, active coke desulfurization ash does not have dust escape in the material preparation process and cannot cause secondary pollution, the coal dust bin 9 is arranged on one side of the dust collector 8, the dust collector 8 is connected with the coal dust bin 9 through a second feeder, mixed coal dust enters the coal dust bin 9 through the second feeder, the lower side of the coal dust bin 9 is provided with the blowing tank 10, the coal dust in the coal dust bin 9 is filled into the lower blowing tank 10, and the blowing source 12 is connected with the conveying pipe 101 of the blowing tank 10 through a pipeline.

Further, recovery unit includes desulfurization ash recovery pipe 4 and air ash blender 6, the one end of desulfurization ash recovery pipe 4 is connected with the coal drop pipe 21 between batcher 2 and the coal pulverizer 3, the direct contact of active burnt desulfurization ash and air has been avoided, through utilizing the negative pressure of coal pulverizer 3 system self, will inhale in the exhaust car 7 active burnt desulfurization ash evenly mix to the raw coal, get into the coal pulverizer 3 after mixing with the raw coal and grind, the other end of desulfurization ash recovery pipe 4 is connected with air ash blender 6, air ash blender 6 is connected with inhaling exhaust car 7 and air blowing source 12 through the pipeline.

Further, the gas ash mixer comprises a first pipeline 61 and a second pipeline 62, one end of the first pipeline 61 is communicated with one end of the second pipeline 62, the other end of the first pipeline 61 is connected with the suction and exhaust vehicle 7, the first pipeline 61 is provided with a recovery pipe inlet regulating valve 5, the second pipeline 62 is provided with a nitrogen purging valve 621, and the other end of the second pipeline 62 is connected with the blowing gas source 12. The recycling pipe inlet regulating valve 5 controls the batching speed, and the nitrogen purging valve 621 ensures that the pipeline is smooth and no blockage occurs.

Further, a speed reducer 13 is arranged at the bottom of the coal mill 3, and the speed reducer 13 is in transmission connection with an external motor 14 through a transmission shaft, so that the running speed of the coal mill 3 is effectively controlled.

Further, a duct valve is provided on the duct 101, and a blowing valve is provided on a pipe between the blowing source 12 and the duct 101. The device can be modified by utilizing the coal injection and pulverizing system, and has the advantages of low investment, simple flow and convenient operation.

Further, the blowing tank 10 is connected with a nitrogen booster through a pipeline, and nitrogen is pressurized in the blowing tank 10 and enters a blast furnace tuyere through pneumatic conveying, so that the purpose of recycling is achieved.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. An environment-friendly active coke desulfurization ash recovery device is characterized in that: including former coal bunker (1), first batcher (2) and coal pulverizer (3), former coal bunker (1) sets up in first batcher (2) one side, coal pulverizer (3) set up in first batcher (2) opposite side, coal pulverizer (3) are connected through coal fall pipe (21) with first batcher (2) one end downside, coal fall pipe (21) stretch into the top of coal pulverizer (3), be connected through recovery unit between coal fall pipe (21) and suction and exhaust car (7), recovery unit passes through the pipeline and is connected with air blowing source (12), coal collecting pipe (22) are set up in the coal fall pipe (21) outside at top in coal pulverizer (3), coal collecting pipe (22) are connected with dust collector (8), set up the filter bag in dust collector (8), dust collector (8) are connected with main exhaust fan (11) through the tuber pipe, coal bunker (9) set up in one side of dust collector (8), coal bunker (9) are connected through second batcher and coal bunker (9), coal bunker (9) downside sets up air blowing source (10) and air blowing source (101) are connected through air blowing source (10).

2. The activated coke desulfurization ash environment-friendly recovery device according to claim 1, wherein: the recycling device comprises a desulfurization ash recycling pipe (4) and an air ash mixer (6), one end of the desulfurization ash recycling pipe (4) is connected with a coal dropping pipe (21) between the feeder (2) and the coal mill (3), the other end of the desulfurization ash recycling pipe (4) is connected with the air ash mixer (6), and the air ash mixer (6) is connected with the suction and exhaust vehicle (7) and the blowing air source (12) through pipelines.

3. The activated coke desulfurization ash environment-friendly recovery device according to claim 2, wherein: the gas ash mixer comprises a first pipeline (61) and a second pipeline (62), one end of the first pipeline (61) is communicated with one end of the second pipeline (62), the other end of the first pipeline (61) is connected with a suction and exhaust vehicle (7), a recovery pipe inlet regulating valve (5) is arranged on the first pipeline (61), a nitrogen purging valve (621) is arranged on the second pipeline (62), and the other end of the second pipeline (62) is connected with a blowing air source (12).

4. The activated coke desulfurization ash environment-friendly recovery device according to claim 1, wherein: the speed reducer (13) is arranged at the bottom of the coal mill (3), and the speed reducer (13) is in transmission connection with an external motor (14) through a transmission shaft.

5. The activated coke desulfurization ash environment-friendly recovery device according to claim 1, wherein: a delivery pipe valve is arranged on the delivery pipe (101), and a blowing valve is arranged on a pipeline between the blowing air source (12) and the delivery pipe (101).

6. The activated coke desulfurization ash environment-friendly recovery device according to claim 1, wherein: the blowing tank (10) is connected with a nitrogen booster through a pipeline.