CN217549273U

CN217549273U - Coal chemical industry solid waste gas waste comprehensive utilization system

Info

Publication number: CN217549273U
Application number: CN202220240693.1U
Authority: CN
Inventors: 成铭钊; 郦怡; 任天斌; 景镇子; 李晨
Original assignee: Jiangsu Jicui Functional Material Research Institute Co ltd
Current assignee: Jiangsu Jicui Functional Material Research Institute Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-10-11
Anticipated expiration: 2032-01-28

Abstract

The utility model provides a useless comprehensive utilization system of coal industry solid waste gas. The system module comprises a flue gas dust removal module, a carbon capture module, a desorption module, a desulfurization and denitrification module, a solid waste raw material pretreatment module, a grinding and briquetting module and a mineralization reaction module which are sequentially connected by a fixed pipeline. The flue gas enters the system from the gas inlet of the bag-type dust collector, dust particles are removed by a dust removal bag to obtain corresponding impurity-removed flue gas, the impurity-removed flue gas flows out of the gas outlet, the impurity-removed flue gas enters the carbon removal capturing tower so as to capture and absorb carbon dioxide in the flue gas, and then the absorbed liquid flows back to the storage tank; the flue gas after the carbon entrapment is from this if advance like SOx/NOx control tower, carries out SOx/NOx control through the carbide layer, later discharges by the gas vent, and the desulfurization sediment and the carbide sediment after SOx/NOx control tower uses are carried to mixing preliminary crushing to weighing device, and weigh, later carry mixed powder to briquetting machine and a small amount of cement mixed briquetting, make the briquetting.

Description

Comprehensive utilization system for solid waste gas and waste gas in coal chemical industry

Technical Field

The utility model belongs to the categorised B01D53/00 field of patent IPC, more specifically relates to a useless comprehensive utilization system of coal industry solid waste gas.

Background

The coal chemical industry solid waste comprises gasified fly ash, gasified slag, coal slime, coal gangue, fly ash and the like, compounds containing silicon, aluminum, magnesium, iron and calcium, and a small amount of titanium, potassium, sodium, phosphorus and the like. In recent years, the utilization of industrial waste residues as raw materials of brickworks is a research hotspot in the field of solid waste treatment, so that the utilization rate of solid waste can be improved, the use of raw materials adopted by buildings can be saved, and the effects of energy conservation and emission reduction are achieved. The carbide slag is industrial waste slag formed after acetylene gas is produced by using carbide, and causes pollution to the environment. The carbide slag has fine particle size and high reaction activity, is mainly used for replacing limestone to prepare building and construction materials such as cement and the like by traditional large-scale consumption, but is limited by saturation of domestic markets, centralized geographic positions and the like; the main component of the carbide slag is calcium hydroxide which can be used for preparing chemical products such as calcium oxide, calcium carbonate and the like, but the treatment process is high in cost and easy to cause secondary pollution due to the influence of impurities in the carbide slag; the carbide slag is strongly alkaline, has better ablation property, has excellent performance in the environmental treatment processes of acid wastewater, flue gas desulfurization and the like, replaces a calcium-based absorbent for flue gas desulfurization, and becomes one of the development directions of comprehensive utilization of the carbide slag.

Therefore, the utility model provides a pair of make full use of in the coal chemical industry solid useless and useless comprehensive utilization system of gas to solve waste pollution and the problem that the utilization of the solid gas of coal chemical industry received the restriction.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the invention provides a coal chemical industry solid waste gas and waste gas comprehensive utilization system, and the system modules comprise a flue gas dust removal module 1, a carbon capture module 2, a desorption module 3, a desulfurization and denitrification module 4, a solid waste raw material pretreatment module 5, a grinding and briquetting module 6 and a mineralization reaction module 7.

As a preferred scheme, the flue gas dust removal module 1 is a cloth bag dust removal device; the cloth bag dust removal device comprises a moving part 8, an air inlet 9, an air outlet 10, a dust removal cloth bag 11 and a dust discharge hole 14; the moving part 8 is fixed on one side of the top of the bag-type dust collector, and the moving part 8 comprises moving wheels and an output shaft 12 extending towards the interior of the box body of the moving part 8; 3-6 blowing pipes 13 are further fixed on the output shaft 12, and the blowing pipes 13 are mechanically and fixedly connected with the output shaft 12 through fixing pins; the gas inlet 9 is positioned in the middle of the box body of the bag-type dust collector and used for allowing the flue gas to enter, and the gas outlet 10 is positioned at the top of the box body of the bag-type dust collector and used for discharging the flue gas after dust removal; the dust discharge hole 14 is located at the bottom of a box body of the cloth bag dust removal device and used for discharging dust, and then collecting the dust.

As a preferable mode, the carbon capture module 2 is a carbon capture absorption device; the desorption module 3 is a carbon capture desorption device; the carbon capture absorption device includes a carbon capture absorption tower 15; a liquid storage tank 16 is also arranged at the bottom of the carbon capture absorption tower 15, and the liquid storage tank 16 is fixedly connected with a pipeline of an air outlet 10 of the cloth bag dust removal device; the carbon capture and absorption device is also provided with a circulating storage tank 17 for carbon capture liquid; the circulating storage tank 17 is fixedly connected with the bottom end and the top of the carbon capture absorption tower 15 through pipelines, and a liquid inlet pump is arranged in a fixed pipeline connected with the top of the circulating storage tank and used for conveying the carbon capture liquid to the top of the carbon capture absorption tower 15; the carbon capture liquid is returned to the recycle storage tank 17 through an outlet at the bottom end after use.

As a preferable scheme, the carbon capture and desorption device comprises a carbon capture and desorption tower 19, a gas storage tank 20 and a reflux groove 18; the top of the carbon capture desorption tower 19 and the reflux groove 18 at the bottom are fixedly connected with the circulating storage tank 17 through pipelines, and the carbon capture desorption tower 19 and the gas storage tank 20 are fixedly connected through pipelines.

As a preferable scheme, the desulfurization and denitrification module 4 is a desulfurization and denitrification tower 21; the bottom of the desulfurization and denitrification tower 21 is fixedly connected with a top end pipeline of the carbon capture absorption tower 15, and an exhaust port 22 is arranged at the top end of the desulfurization and denitrification tower 21 and used for discharging desulfurized and denitrated flue gas; 5-20 carbide slag layers are arranged in the desulfurization and denitrification tower 21.

As a preferable scheme, the solid waste raw material pretreatment module 5 comprises a powder weighing device; the powder weighing device is used for measuring and weighing the waste carbide slag and the desulfurization ash slag left in the desulfurization and denitrification tower 21; the solid waste raw material pretreatment module 5 also comprises a crushing device for primarily crushing the weighed ash.

As a preferable scheme, the powder weighing device comprises an ash inlet 23, a storage box 24, a handle 30, an ash outlet 29, a base 31 and a weighing meter 25; the handle 30 and the ash discharging port 29 are respectively arranged at two opposite sides of the storage box 24, and the ash feeding port 23 is arranged at the top end of the storage box 24 and used for feeding and mixing carbide slag and desulfurization ash; the storage box 24 is detachably and fixedly connected to the top end of a base 31, and the base 31 comprises a weighing meter 25 for displaying the ash and slag mass value.

As a preferred solution, the abrasive compact module 6 comprises a compact press; the briquetting machine comprises a briquetting box 26, and a feed inlet 32 is formed in the top end of the briquetting box 26 and used for feeding mixed ash; a rotary push rod 28 is arranged at the left end of the briquetting box body 26 and is used for driving the briquetting plate 27 on the same side in the briquetting box body 26 to extrude towards the other side; the grinding and briquetting module 6 also comprises a grinding device for grinding the briquetted workpieces.

As a preferred scheme, the mineralization reaction module 7 is a mineralization reaction kettle; the mineralization reaction kettle is a continuous mineralization reaction kettle which is formed by connecting autoclaves 33 in series and/or in parallel.

In a preferred embodiment, the number of the autoclaves 33 is 5 to 20.

Has the advantages that:

1. the utility model provides a useless comprehensive utilization system of solid waste gas of coal chemical industry can be through the synergism of a plurality of modules to realize the reutilization of the solid waste gas waste material in coal chemical industry field, and can realize the useless pair of processing of solid useless gas in the use of system, thereby improve system efficiency.

2. The application provides a comprehensive utilization system for solid waste gas and waste gas in coal chemical industry,the adopted solid waste and gas waste raw materials can be obtained from local materials in chemical plants and the like, the solid waste is simply treated and directly pressed into building materials, and the trapped high-concentration CO is ₂ Reacts with the massive building materials to obtain the building materials with the strength meeting the building requirements, thereby really realizing CO ₂ The net emission reduction and the direct production of the product building materials from the coal chemical industry plant, but not the building material raw materials, the whole process has low energy consumption and small emission.

3. According to the coal chemical industry solid waste gas waste comprehensive utilization system, the adopted desulfurization and denitrification tower and the subsequent powder pretreatment module can realize the on-site treatment of all solid wastes, and further can realize the mixing of desulfurization ash and carbide slag, so that the crushing process is accelerated, the grinding time is saved, and the grinding efficiency is higher; and the final product is a solid block building material with usable strength, and after the system and the treatment process are introduced, the solid waste and the gas waste in the field of coal chemical industry can be directly treated into the product at one time without introducing additional auxiliary raw materials.

Drawings

Fig. 1 is a schematic view of a flow and a structure of the comprehensive utilization system in the present application.

Fig. 2 is a schematic structural diagram of a mineralization reactor of the comprehensive utilization system in the present application.

In the figure:

1-flue gas dust removal module, 2-carbon capture module, 3-desorption module, 4-desulfurization and denitration module, 5-solid waste raw material pretreatment module, 6-grinding briquetting module, 7-mineralization reaction module, 8-moving part, 9-air inlet, 10-air outlet, 11-dust removal cloth bag, 12-output shaft, 13-blowing pipe, 14-dust discharge port, 15-carbon capture absorption tower, 16-liquid storage tank, 17-circulation storage tank, 18-reflux tank, 19-carbon capture desorption tower, 20-air storage tank, 21-desulfurization and denitration tower, 22-exhaust port, 23-ash feed port, 24-storage tank, 25-weighing scale, 26-briquetting box, 27-briquetting plate, 28-rotating push rod, 29-ash discharge port, 30-handle, 31-base, 32-briquetting plate, 28-ash feed port and 33-autoclave.

Detailed Description

The present invention will be described in detail with reference to the following examples. It is necessary to point out here that the following examples are only used for further illustration of the present invention, and should not be interpreted as a limitation of the scope of the present invention, and that the person skilled in the art would still belong to the scope of the present invention by some non-essential modifications and adjustments made by the above-mentioned contents of the present invention.

Example 1

As shown in fig. 1 and 2, the system module of the comprehensive utilization system for solid waste gas in coal chemical industry comprises a flue gas dust removal module 1, a carbon capture module 2, a desorption module 3, a desulfurization and denitrification module 4, a solid waste raw material pretreatment module 5, a grinding briquetting module 6 and a mineralization reaction module 7.

The flue gas dust removal module 1 is a cloth bag dust removal device; the bag-type dust collector comprises a moving part 8, an air inlet 9, an air outlet 10, a dust collecting bag 11 and a dust outlet 14; the moving part 8 is fixed on one side of the top of the bag-type dust collector, and the moving part 8 comprises a moving wheel and an output shaft 12 extending towards the interior of the box body of the moving part 8; 3-6 blowing pipes 13 are also fixed on the output shaft 12, and the blowing pipes 13 are mechanically and fixedly connected with the output shaft 12 through fixing pins; the gas inlet 9 is positioned in the middle of the box body of the bag-type dust collector and used for the entry of flue gas, and the gas outlet 10 is positioned at the top of the box body of the bag-type dust collector and used for the discharge of the flue gas after dust removal; the dust discharge port 14 is located at the bottom of the box body of the cloth bag dust removal device and used for discharging dust, and then collecting the dust.

The carbon capture module 2 is a carbon capture absorption device; the desorption module 3 is a carbon capture desorption device; the carbon capturing and absorbing device includes a carbon capturing and absorbing tower 15; a liquid storage tank 16 is also arranged at the bottom of the carbon capture absorption tower 15, and the liquid storage tank 16 is fixedly connected with a pipeline of an air outlet 10 of the cloth bag dust removal device; the carbon capture absorption device is also provided with a circulating storage tank 17 for carbon capture liquid; the circulating storage tank 17 is fixedly connected with the bottom end and the top of the carbon capture absorption tower 15 through pipelines, and a liquid inlet pump is arranged in a fixed pipeline connected with the top of the circulating storage tank and used for conveying the carbon capture liquid to the top of the carbon capture absorption tower 15; the carbon capture liquid is returned to the recycle storage tank 17 through an outlet at the bottom end after use.

The carbon capture desorption device comprises a carbon capture desorption tower 19, a gas storage tank 20 and a reflux groove 18; the top of the carbon capturing and desorbing tower 19 and the reflux groove 18 at the bottom end are fixedly connected with the circulating storage tank 17 through pipelines, and the carbon capturing and desorbing tower 19 and the gas storage tank 20 are fixedly connected through pipelines.

The desulfurization and denitrification module 4 is a desulfurization and denitrification tower 21; the bottom of the desulfurization and denitrification tower 21 is fixedly connected with a top end pipeline of the carbon capture absorption tower 15, and an exhaust port 22 is arranged at the top end of the desulfurization and denitrification tower 21 and used for discharging the desulfurized and denitrified flue gas; 11 carbide slag layers are arranged in the desulfurization and denitrification tower 21.

The solid waste raw material pretreatment module 5 comprises a powder weighing device; the powder weighing device is used for measuring and weighing the waste carbide slag and the desulfurization ash slag left in the desulfurization and denitrification tower 21; the solid waste raw material pretreatment module 5 also comprises a crushing device for primarily crushing the weighed ash.

The powder weighing device comprises an ash inlet 23, a storage box 24, a handle 30, an ash outlet 29, a base 31 and a weighing meter 25; the handle 30 and the ash discharging port 29 are respectively arranged at two opposite sides of the storage box 24, and the ash feeding port 23 is arranged at the top end of the storage box 24 and used for feeding and mixing carbide slag and desulfurization ash; the storage box 24 is detachably and fixedly connected to the top end of the base 31, and the base 31 comprises a weighing meter 25 for displaying the ash and slag quality value.

The abrasive compact module 6 includes a compact press; the briquetting machine comprises a briquetting box body 26, and a feed inlet 32 is formed in the top end of the briquetting box body 26 and used for feeding mixed ash; a rotary push rod 28 is arranged at the left end of the briquetting box body 26 and is used for driving the briquetting plate 27 on the same side in the briquetting box body 26 to extrude towards the other side; the grinding and briquetting module 6 also comprises a grinding device for grinding the briquetted workpieces.

The mineralization reaction module 7 is a mineralization reaction kettle; the mineralization reaction kettle is a continuous mineralization reaction kettle formed by connecting autoclaves 33 in parallel, and the number of the autoclaves 33 is 5.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In the actual use process: the flue gas enters the system from the gas inlet of the bag-type dust collector, dust particles are removed through a dust removing bag to obtain corresponding impurity-removed flue gas, and then the corresponding impurity-removed flue gas flows out of the gas outlet, wherein the dust removing bag is cleaned through a blowing pipe in the device, and the moving part is used for adjusting the position of the blowing pipe through a control output shaft; the flowing impurity-removed flue gas enters a carbon capturing tower, at the moment, the carbon capturing liquid in the circulating storage tank is conveyed to the top of the carbon capturing tower to form convection with the upstream flue gas, so that carbon dioxide in the flue gas is captured and absorbed, and then the absorbed liquid flows back to the storage tank; enabling the flue gas subjected to carbon capture to enter a desulfurization and denitrification tower, performing desulfurization and denitrification through a calcium carbide layer, and then discharging the flue gas through an exhaust port; the carbon capture liquid in the circulating storage tank is conveyed to a carbon capture desorption tower to realize the desorption of carbon dioxide and is stored in a gas storage tank for standby; and then, conveying the desulfurized slag and the carbide slag used by the desulfurization and denitrification tower to a weighing device for mixing and primary crushing, weighing, conveying the mixed powder to a briquetting machine for mixing and briquetting with a small amount of cement to prepare a pressed piece, then conveying the pressed piece into a mineralization reaction kettle, and realizing mineralization reaction through the supply of carbon dioxide in a gas storage tank.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content disclosed above to equivalent embodiments with equivalent changes, but all those skilled in the art do not depart from the technical scope of the present invention, and any simple modifications made to the above embodiments according to the technical essence of the present invention, equivalent changes and modifications still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a useless comprehensive utilization system of coal industry solid waste gas which characterized in that: the system module comprises a flue gas dust removal module (1), a carbon capture module (2), a desorption module (3), a desulfurization and denitrification module (4), a solid waste raw material pretreatment module (5), a grinding and briquetting module (6) and a mineralization reaction module (7);

the flue gas dust removal module (1) is a cloth bag dust removal device; the cloth bag dust removal device comprises a moving part (8), an air inlet (9), an air outlet (10), a dust removal cloth bag (11) and a dust discharge hole (14); the moving part (8) is fixed on one side of the top of the bag-type dust collector, and the moving part (8) comprises moving wheels and an output shaft (12) extending towards the inside of a box body of the moving part (8); 3-6 injection pipes (13) are further fixed on the output shaft (12), and the injection pipes (13) are mechanically and fixedly connected with the output shaft (12) through fixing pins; the air inlet (9) is positioned in the middle of the box body of the cloth bag dust removal device and used for allowing flue gas to enter, and the air outlet (10) is positioned at the top of the box body of the cloth bag dust removal device and used for discharging the flue gas after dust removal; the dust discharge hole (14) is positioned at the bottom of a box body of the cloth bag dust removal device and used for discharging dust, and then dust is collected;

the carbon capture module (2) is a carbon capture absorption device; the desorption module (3) is a carbon capture desorption device; the carbon capture absorption device comprises a carbon capture absorption tower (15); a liquid storage tank (16) is also arranged at the bottom of the carbon capture absorption tower (15), and the liquid storage tank (16) is fixedly connected with an air outlet (10) of the cloth bag dust removal device through a pipeline; the carbon capture and absorption device is also provided with a circulating storage tank (17) for carbon capture liquid; the circulating storage tank (17) is fixedly connected with the bottom end and the top of the carbon capturing and absorbing tower (15) through pipelines, and a liquid inlet pump is arranged in a fixed pipeline connected with the top of the circulating storage tank and used for conveying the carbon capturing liquid to the top of the carbon capturing and absorbing tower (15); the carbon capture liquid returns to the circulating storage tank (17) through an outlet at the bottom end after being used;

the carbon capture desorption device comprises a carbon capture desorption tower (19), a gas storage tank (20) and a reflux tank (18); the top of the carbon capturing and desorbing tower (19) and the reflux groove (18) at the bottom end are fixedly connected with the circulating storage tank (17) through pipelines, and the carbon capturing and desorbing tower (19) is fixedly connected with the gas storage tank (20) through pipelines;

the desulfurization and denitrification module (4) is a desulfurization and denitrification tower (21); the bottom of the desulfurization and denitrification tower (21) is fixedly connected with a top pipeline of the carbon capture absorption tower (15), and an exhaust port (22) is formed in the top of the desulfurization and denitrification tower (21) and used for exhausting flue gas subjected to desulfurization and denitrification; 5-20 carbide slag layers are arranged in the desulfurization and denitrification tower (21).

2. The comprehensive utilization system for solid waste gas in coal chemical industry according to claim 1, characterized in that: the solid waste raw material pretreatment module (5) comprises a powder weighing device; the powder weighing device is used for measuring and weighing the waste carbide slag and the desulfurization ash slag left in the desulfurization and denitrification tower (21); the solid waste raw material pretreatment module (5) also comprises a crushing device for primarily crushing weighed ash.

3. The comprehensive utilization system for solid waste gas in coal chemical industry according to claim 2, characterized in that: the powder weighing device comprises an ash feeding hole (23), a storage box (24), a handle (30), an ash discharging hole (29), a base (31) and a weighing table (25); the handles (30) and the ash residue discharge ports (29) are respectively arranged at two opposite sides of the storage box (24), and the ash residue feed port (23) is arranged at the top end of the storage box (24) and used for feeding and mixing carbide slag and desulfurization ash residue; the storage box (24) is detachably and fixedly connected to the top end of the base (31), and the base (31) comprises a weighing scale (25) for displaying the ash and slag mass value.

4. The comprehensive utilization system for solid waste gas and waste gas in coal chemical industry according to claim 3, characterized in that: the abrasive compact module (6) comprises a compact press; the briquetting machine comprises a briquetting box body (26), and a feeding hole (32) for feeding mixed ash is formed in the top end of the briquetting box body (26); the left end of the briquetting box body (26) is provided with a rotating push rod (28) for driving the briquetting plate (27) on the same side in the briquetting box body (26) to extrude towards the other side; the grinding and briquetting module (6) also comprises a grinding device used for grinding the briquetted workpieces.

5. The comprehensive utilization system for solid waste gas and waste gas in coal chemical industry according to claim 4, characterized in that: the mineralization reaction module (7) is a mineralization reaction kettle; the mineralization reaction kettle is a continuous mineralization reaction kettle which is formed by connecting autoclaves (33) in series and/or in parallel.

6. The comprehensive utilization system for solid waste gas and waste gas in coal chemical industry according to claim 5, characterized in that: the number of the autoclaves (33) is 5-20.