Closed environment-friendly coal preparation system
By designing a closed environmentally friendly coal reserve system in the coal preparation workshop of the coking plant, and using sealing covers, dust capture covers and spraying systems, the problems of dust discharge pollution in the coal preparation workshop and pulverized coal dust are solved, effectively collecting and reusing coal dust, and reducing the production costs of enterprises.
Patent Information
- Application Number
- CN202422385091.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-09-29
AI Technical Summary
There are many dust spots in the coal preparation workshop of the coking plant, and the dust emission of pulverized coal pollutes the environment, resulting in air pollution and waste of coal, increasing the production costs of enterprises.
A closed environmentally friendly coal reserve system is designed, including a sealed cover, a dust trap and a spray system, which is used to block dust, capture coal pulverized coal dust, and collect and reuse it through a bag dust collector.
It effectively blocks dust at the blanking point, captures pulverized coal dust evacuated at the crusher and crusher, and moistens the pulverized coal dust and falls to the ground for recycling through the spraying system, solving the problem of coal dust emission pollution to the environment and reducing the production costs of enterprises.
Smart Images
Figure CN222846080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dust prevention in coal preparation workshops, in particular to a closed environmentally friendly coal preparation system. Background Art
[0002] The coal preparation workshop of the coking plant mainly includes coal storage section, crushing section, coal blending section, pulverizing section, mixing chamber, coal tower, etc. The main work of the coal preparation workshop is coal transportation, crushing, storage, mixing, etc. The raw coal transported from the coal washing plant is poured into the raw coal bunker, and transported to the crusher for crushing through the raw coal conveyor belt. The raw coal of different types and properties is transported to the coal blending bunker after crushing. The raw coal is blended and processed into blended coal in a certain proportion through the coal blending bunker, and the blended coal is transported to the pulverizer for crushing, and finally transported to the coal tower through the coal powder conveying pipe for storage and standby. In the process of coal preparation, there are many dust points, mainly belt conveyor drop point, crusher, crusher drop port, coal blending bunker discharge port, pulverizer, etc. The main atmospheric pollutants emitted are coal powder and coal dust. If the coal powder and coal dust emitted by the coal preparation workshop are not treated, on the one hand, it will cause air pollution and fail to meet environmental protection requirements, and on the other hand, it will cause waste of coal and increase the production cost of the enterprise. Therefore, it is an objective need to develop a closed environmentally friendly coal preparation system. Utility Model Content
[0003] 1. Technical issues to be solved
[0004] In order to solve the problem of many dust points in the coal preparation workshop of the coking plant and the pollution of coal powder and coal dust emission to the environment, the utility model provides a closed environmentally friendly coal preparation system, the coal preparation system is detachably provided with a sealing cover at the coal dropping point at the end of the raw coal conveyor belt and the coal receiving port of the crusher, and a conveyor belt cover is detachably provided above the matching coal conveyor belt and the coal receiving port of the crusher, which can effectively block the dust from the dropping point, a first dust collecting cover is arranged above the crusher, and a second dust collecting cover is arranged above the crusher, which can capture the coal powder and coal dust scattered from the crusher and the crusher, and collect them for reuse through a bag dust collector, and the arranged spray system can fully wet all the coal powder and coal dust in the coal preparation workshop and drop them to the ground for recovery, and corresponding dust prevention and dust catching measures are arranged for different dust points, thereby solving the problem of coal powder and coal dust emission polluting the environment.
[0005] 2. Technical solution
[0006] To solve the above problems, the utility model adopts the following technical solutions.
[0007] A closed and environmentally friendly coal preparation system comprises a raw coal bin, a crusher, a coal distribution bin, a pulverizer, a coal tower and a bag dust collector, a raw coal conveyor belt is arranged between the raw coal bin and the crusher, a sealing cover is detachably installed at the coal dropping point at the end of the raw coal conveyor belt and the coal receiving port of the crusher, a hoist is arranged between the crusher and the coal distribution bin, a distribution coal conveyor belt is arranged between the coal distribution bin and the pulverizer, a conveyor belt cover is detachably installed above the distribution coal conveyor belt and at the coal receiving port of the pulverizer, a coal powder conveying pipe is arranged between the pulverizer and the coal tower, a first dust catching hood is arranged above the crusher, a second dust catching hood is arranged above the pulverizer, the first dust catching hood and the second dust catching hood are connected to the bag dust collector through a pipeline, the bag dust collector is connected to an induced draft fan, and the induced draft fan is provided with an exhaust outlet.
[0008] Furthermore, the discharge port of the raw coal bin, the crusher, the coal distribution bin, the pulverizer and the bag dust collector are all arranged in the coal preparation workshop. The coal preparation workshop is a closed structure, and a plurality of air inlets are arranged on the side walls and the top of the coal preparation workshop.
[0009] Furthermore, a spray system is provided on the top of the coal preparation workshop, the spray system is connected to a water pipe, and an atomizing nozzle is provided below the water pipe.
[0010] Furthermore, there are several water pipes, all of which are arranged horizontally and on a horizontal plane, the distance between two adjacent water pipes is 1 to 2 m, and several atomizing nozzles are arranged under each water pipe, and the distance between two adjacent atomizing nozzles is 1 to 2 m.
[0011] 3. Beneficial effects
[0012] Compared with the prior art, the advantages of the present invention are:
[0013] The closed environmentally friendly coal preparation system of the technical solution has a sealing cover detachably installed at the coal dropping point at the end of the raw coal conveyor belt and the coal receiving port of the crusher, and a conveyor belt cover detachably installed above the matching coal conveyor belt and the coal receiving port of the crusher, which can effectively block the dust from the dropping point, and a first dust collecting hood is arranged above the crusher, and a second dust collecting hood is arranged above the crusher, which can capture the coal powder and coal dust scattered from the crusher and the crusher, and collect them for reuse through bag dust collectors. The spray system set up can fully wet the coal powder and coal dust in the coal preparation workshop and then drop them to the ground for recovery. The coal preparation system sets corresponding dust prevention and dust catching measures for different dust points, which not only solves the problem of coal powder and coal dust emissions polluting the environment, but also collects and reuses coal powder and coal dust, thereby reducing the production cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0015] In the figure: 1- coal preparation workshop, 2- raw coal bin, 3- raw coal conveyor belt, 4- sealing cover, 5- crusher, 6- elevator, 7- coal bunker, 8- matching coal conveyor belt, 9- conveyor belt cover, 10- pulverizer, 11- coal powder conveying pipe, 12- coal tower, 13- first dust hood, 14- second dust hood, 15- bag dust collector, 16- air inlet, 17- spray system, 18- water pipe, 19- atomizing nozzle, 20- exhaust outlet, 21- induced draft fan. DETAILED DESCRIPTION
[0016] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.
[0017] like Figure 1 As shown, the utility model includes a raw coal bin 2, a crusher 5, a coal blending bin 7, a pulverizer 10, a coal tower 12 and a bag dust collector 15. A raw coal conveying belt 3 is arranged between the raw coal bin 2 and the crusher 5. The raw coal conveying belt 3 is used to transport the raw coal in the raw coal bin 2 to the crusher 5. A sealing cover 4 is detachably installed at the coal dropping point at the end of the raw coal conveying belt 3 and the coal receiving port of the crusher 5. The sealing cover 4 can block dust at the coal dropping point at the end of the raw coal conveying belt 3. A hoist 6 is arranged between the crusher 5 and the coal blending bin 7. The hoist 6 is used to lift the raw coal crushed by the crusher 5 into the coal blending bin 7. A blending coal conveying belt 8 is arranged between the coal blending bin 7 and the pulverizer 10. The blending coal conveying belt 8 is used to convey the blended coal prepared by the coal blending bin 7 to the pulverizer 10 for crushing. A conveying belt cover 9 is detachably installed above the blending coal conveying belt 8 and at the coal receiving port of the pulverizer 10. The cover 9 can block the dust on the coal conveying belt 8 and the coal drop point of the pulverizer 10. A coal powder conveying pipe 11 is arranged between the pulverizer 10 and the coal tower 12. The pulverized coal is conveyed by the coal powder conveying pipe 11 to prevent the coal powder from escaping. A first dust hood 13 is arranged above the pulverizer 5. The first dust hood 13 is used to capture the coal powder and coal dust scattered by the crusher 5. A second dust hood 14 is arranged above the pulverizer 10. The second dust hood 14 Used to capture coal powder and coal dust emitted from the crusher 10, the first dust hood 13 and the second dust hood 14 are connected to the bag dust collector 15 through a pipeline, and the bag dust collector 15 is connected to an induced draft fan 21. The induced draft fan 21 sucks the coal powder and coal dust emitted from the crusher 5 and the crusher 10 into the bag dust collector 15 for filtering and collection. The induced draft fan 21 is provided with an exhaust port 20, and the air filtered and dust-removed by the bag dust collector 15 is discharged from the exhaust port 20.
[0018] The discharge port of the raw coal bin 2, the crusher 5, the coal distribution bin 7, the pulverizer 10 and the bag dust collector 15 are all arranged in the coal preparation workshop 1. The coal preparation workshop 1 is a closed structure. A plurality of air inlets 16 are arranged on the side walls and the top of the coal preparation workshop 1. The coal preparation section with many dust points is arranged indoors, and a plurality of air inlets 16 are reserved for ventilation. The air filtered and dust-removed by the bag dust collector 15 is discharged from the coal preparation workshop 1 through the exhaust port 20. A spray system 17 is arranged on the top of the coal preparation workshop 1, and the spray system 17 is connected to a water pipe 18. An atomizing nozzle 19 is arranged below the water pipe 18. There are several water pipes 18, all of which are arranged horizontally and are on the same horizontal plane. The distance between two adjacent water pipes 18 is 1 to 2 m. Several atomizing nozzles 19 are arranged below each water pipe 18, and the distance between two adjacent atomizing nozzles 19 is 1 to 2 m. The spray system 17 is used to moisten a small amount of scattered coal powder and coal dust in the coal preparation workshop 1. The coal powder and coal dust are collected and reused after falling to the ground after being moistened.
[0019] The coal preparation process of the coal preparation system is that the raw coal in the raw coal bin 2 flows out from the discharge port and falls on the raw coal conveyor belt 3. The raw coal is transported to the crusher 5 for crushing via the raw coal conveyor belt 3. The crushed raw coal is transported to the coal blending bin 7 via the elevator 6. The coal blending bin 7 mixes different types and properties into blended coal in a certain proportion. The blended coal coming out of the coal blending bin 7 is transported to the pulverizer 10 for crushing via the blending coal conveyor belt 8. The crushed coal powder is transported to the coal tower 12 through the coal powder conveying pipe for storage and standby.
[0020] The sealing cover 4 blocks the dust at the coal dropping point at the end of the raw coal conveyor belt 3, and the conveyor belt cover 9 blocks the dust on the matching coal conveyor belt 8 and the dropping point at the coal receiving port of the crusher 10. The elevator 6 is sealed. In the entire coal preparation process, the crusher 5 and the crusher 10 are the ones that generate the most dust in the entire coal preparation system. A first dust hood 13 is arranged above the crusher 5, and a second dust hood 14 is arranged above the crusher 10. The first dust hood 13 and the second dust hood 14 are connected to the bag dust collector 15 through a pipeline.
[0021] When the coal preparation system is preparing coal, the induced draft fan 21 is started, and the coal powder and coal dust emitted from the crusher 5 enter the bag dust collector 15 through the first dust hood 13 for filtration and collection, and the coal powder and coal dust emitted from the pulverizer 10 enter the bag dust collector 15 through the second dust hood 14 for filtration and collection, and the air filtered by the bag dust collector 15 is discharged from the coal preparation workshop 1 through the exhaust port 20. At the same time, the spray system 17 is started, and the spray water in the spray system 17 is sprayed from the atomizing nozzle 19 along the water pipe 18 to moisten the coal powder and coal dust emitted in the coal preparation workshop 1. The moistened coal powder and coal dust fall to the ground and are then collected and reused.
Claims
1. A closed environmentally friendly coal preparation system, characterized by: The invention comprises a raw coal bin (2), a crusher (5), a coal blending bin (7), a pulverizer (10), a coal tower (12) and a bag dust collector (15), wherein a raw coal conveying belt (3) is arranged between the raw coal bin (2) and the crusher (5), a sealing cover (4) is detachably mounted between the coal dropping point at the end of the raw coal conveying belt (3) and the coal receiving port of the crusher (5), an elevator (6) is arranged between the crusher (5) and the coal blending bin (7), a blending coal conveying belt (8) is arranged between the coal blending bin (7) and the pulverizer (10), and the blending coal conveying belt (8) 8) A conveyor belt cover (9) is detachably installed above the crusher (5) and at the coal receiving port of the crusher (10); a coal powder conveying pipe (11) is provided between the crusher (10) and the coal tower (12); a first dust collecting cover (13) is provided above the crusher (5); a second dust collecting cover (14) is provided above the crusher (10); the first dust collecting cover (13) and the second dust collecting cover (14) are connected to the bag dust collector (15) through a pipeline; the bag dust collector (15) is connected to an induced draft fan (21); and the induced draft fan (21) is provided with an exhaust port (20).
2. A closed environmentally friendly coal preparation system according to claim 1, characterized in that: The discharge port of the raw coal bin (2), the crusher (5), the coal distribution bin (7), the pulverizer (10) and the bag dust collector (15) are all arranged in a coal preparation workshop (1). The coal preparation workshop (1) is a closed structure. The side walls and the top of the coal preparation workshop (1) are provided with a plurality of air inlets (16).
3. A closed environmentally friendly coal preparation system according to claim 2, characterized in that: A spray system (17) is arranged on the top of the coal preparation workshop (1), the spray system (17) is connected to a water pipe (18), and an atomizing nozzle (19) is arranged below the water pipe (18).
4. A closed environmentally friendly coal preparation system according to claim 3, characterized in that: There are a plurality of water pipes (18), all of which are arranged horizontally and on a horizontal plane, and the distance between two adjacent water pipes (18) is 1 to 2 m. A plurality of atomizing nozzles (19) are arranged below each water pipe (18), and the distance between two adjacent atomizing nozzles (19) is 1 to 2 m.