Coking dedusting ash blending and coking system

Abstract

The utility model discloses a coking dedusting ash blending and coking system, which comprises an ash discharging system, a centralized ash bin system, a pulverizer deduster, a humidifying and stirring system and a blended coal belt, the ash discharging system comprises an ash discharging pipe and an ash discharging scraper groove, and outlets of the ash discharging pipe and the ash discharging scraper groove are respectively communicated with the centralized ash bin system. The humidifying and stirring system is communicated with the bottom of the centralized ash bin system, the pulverizer dust remover is arranged above the ash discharging scraper groove, and the blended coal belt is arranged at the bottom of the humidifying and stirring system. The device has the advantages that the device is convenient for a coking enterprise to upgrade and reconstruct the existing coal blending process, is low in investment cost, does not stick during blanking when the fly ash is blended, reduces the workload increased by manually cleaning equipment, can quantitatively and uniformly blend the fly ash through the star-shaped unloader, and replaces part of lean coal in proportion for coking through the low-cost fly ash; and the production cost of coking enterprises is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coking technical field, especially a system of coking dedusting ash back blending coking. BACKGROUND

[0002] Coking dedusting ash is the product collected by dedusting equipment to the dust produced in the coke oven production and belt transportation process, which is mainly composed of coking coal, coke powder and dust, and the independent coking plant has no better treatment method, so that it is long-term stacking, which not only pollutes the environment, but also causes resource waste; the coking-ironmaking combined enterprise usually directly burns the coking dedusting ash as fuel, and the resource utilization rate of the dedusting ash is not maximized. Due to the increasing attention of the state to environmental protection, the coking industry increases many dedusting equipment to control dust overflow, the dedusting ash amount increases, the dedusting ash price is cheap, the carbon content is high, and many coking enterprises have gradually used the dedusting ash to replace part of the coking coal for coking production, and the dedusting coke powder is recycled and utilized to reduce the blending coal cost.

[0003] At present, the dedusting ash is used in the coal blending coking technology, and the wet processing process, the dry processing process and the direct processing process are usually used, the wet processing process is to add water in the coke powder crushing process, so that the moisture content of the coke powder is more than 80% to have fluidity, so as to eliminate the sticking and blocking phenomenon; the dry processing process is to dry the coke powder to less than 3% of water content, so as to eliminate the sticking and blocking phenomenon; the direct processing process is to use the vibration principle, and the steel bar in the cylinder is impacted and ground at high frequency to crush the material, so that the coke powder is normally crushed between 8% and 15% of water content, and the sticking and blocking phenomenon is not blocked. The above processes need to increase specific silos and equipment, the required transformation investment is large, the equipment sticking problem cannot be effectively solved and the like. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a system of coking dedusting ash back blending coking, which is convenient for the coking enterprise to upgrade and transform the existing coal blending process, the investment cost is small, the dedusting ash is not sticky when being used, the workload increased by manual cleaning of the equipment is reduced, the dedusting ash can be quantitatively and uniformly blended by the star-shaped unloader, part of the lean coal for coking is replaced by the low-cost dedusting ash, and the production cost of the coking enterprise is reduced.

[0005] The above technical purpose of the utility model is realized by the following technical scheme.

[0006] The application discloses a system for coking dedusting ash back blending coking, which is characterized by comprising an ash unloading system, a centralized ash bin system, a pulverizer dust collector, a humidifying and stirring system and a blending coal belt, wherein the ash unloading system comprises an ash unloading pipe and an ash unloading scraper groove; the outlet of the ash unloading pipe and the outlet of the ash unloading scraper groove are communicated with the centralized ash bin system respectively; the humidifying and stirring system is communicated with the bottom of the centralized ash bin system; the pulverizer dust collector is arranged above the ash unloading scraper groove; and the blending coal belt is arranged at the bottom of the humidifying and stirring system.

[0007] Preferably, the inlet of the ash unloading pipe is further communicated with a compressed air blowing pipe, and a manual gate valve is arranged on the compressed air blowing pipe.

[0008] Preferably, a plurality of groups of the pulverizer dust collectors are arranged in parallel above the ash unloading scraper groove, and an ash unloading valve is arranged at the bottom discharge port of each group of the pulverizer dust collectors; and a plurality of groups of circulating movable ash unloading scrapers are arranged in the ash unloading scraper groove.

[0009] Preferably, the centralized ash bin system comprises a centralized ash bin and a star-shaped ash unloading valve; the outlet of the ash unloading pipe is communicated with the inlet of the upper part of the centralized ash bin; the outlet of the ash unloading scraper groove is communicated with the inlet of the middle part of the centralized ash bin through an electric gate valve; and the star-shaped ash unloading valve is arranged at the discharge port of the bottom of the centralized ash bin.

[0010] Preferably, a bin top small dust collector is further arranged at the top of the centralized ash bin, and a pulse valve and a dust removal motor are arranged in the bin top small dust collector.

[0011] Preferably, a rapping motor is arranged at the lower conical part of the centralized ash bin.

[0012] Preferably, the humidifying and stirring system comprises a stirring cylinder, a bar stirrer and humidifying nozzles; the inlet of the top of the stirring cylinder is communicated with the star-shaped ash unloading valve; the stirring cylinder is arranged in a whole downward inclined manner; the bar stirrer is arranged in the stirring cylinder along the arrangement direction of the stirring cylinder; and a plurality of groups of the humidifying nozzles are arranged on the upper part of the cylinder wall of the stirring cylinder at equal intervals.

[0013] Preferably, a motor and a speed reducer are connected and arranged above the bar stirrer.

[0014] Preferably, a discharging chute is vertically connected to the discharge port of the bottom of the stirring cylinder, and the discharging chute is arranged above one side of the blending coal belt.

[0015] In summary, the utility model has the following beneficial effects: it is convenient for coking enterprises to upgrade and transform the existing coal blending process, the investment cost is small, the dust ash is not sticky when being used, the workload of manual cleaning equipment is reduced, the dust ash can be quantitatively and uniformly blended through the star-shaped unloading device, part of the lean coal for coking is replaced by low-cost dust ash, and the production cost of the coking enterprise is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall structure schematic diagram of the utility model;

[0017] In the figure, 1 is an ash unloading system, 11 is an ash unloading pipe, 12 is a manual gate valve, 13 is a compressed air blowing pipe, 14 is an ash unloading valve, 15 is an ash unloading scraper, 16 is an ash unloading scraper groove, 2 is a centralized ash bin system, 21 is a pulse valve, 22 is a bin top small dust removal device, 23 is a dust removal motor, 24 is a centralized ash bin, 25 is an electric gate valve, 26 is a rapping motor, 27 is a star-shaped ash unloading valve, 3 is a pulverizer dust remover; 4 is a humidifying and stirring system, 41 is a motor, 42 is a speed reducer, 43 is a stirring cylinder, 44 is a bar stirrer, 45 is a humidifying nozzle, 46 is a discharging chute, and 5 is a blending coal belt. DETAILED DESCRIPTION

[0018] The specific embodiments of the utility model will be further described below in combination with the drawings, and the embodiments do not constitute a limitation on the utility model.

[0019] As Figure 1 shown in a kind of coking dust ash back blending system for coking, including ash unloading system 1, centralized ash bin system 2, pulverizer dust remover 3, humidifying and stirring system 4 and blending coal belt 5, ash unloading system 1 includes ash unloading pipe 11 and ash unloading scraper 15 groove 16, the outlet of ash unloading pipe 11 and ash unloading scraper 15 groove 16 is communicated with centralized ash bin system 2 respectively, the ash unloading pipe 11 of ash unloading system 1 and the ash unloading scraper 15 groove 16 are used for the dust ash of pulverizer dust remover 3 body unloading respectively, and the unloading of coal yard dust ash, dry quenching dust ash that ash suction car is transferred, humidifying and stirring system 4 is communicated with the bottom of centralized ash bin system 2, pulverizer dust remover 3 is set in the upper of ash unloading scraper 15 groove 16, and blending coal belt 5 is set in the bottom of humidifying and stirring system 4.

[0020] The inlet of ash unloading pipe 11 is also communicated with a compressed air blowing pipe 13, a manual gate valve 12 is arranged on the compressed air blowing pipe, and the manual gate valve 12 can utilize compressed air blowing to unload ash in cooperation with the compressed air blowing pipe 13.

[0021] A plurality of groups of pulverizer dust removers 3 are connected in parallel above the ash unloading scraper 15 groove 16, a dust ash valve 14 is arranged at the bottom discharge port of each group of pulverizer dust removers 3, and a plurality of groups of circulating movable ash unloading scrapers 15 are arranged in the ash unloading scraper 15 groove 16.

[0022] The centralized ash bin system 2 comprises a centralized ash bin 24 and a star-shaped ash discharge valve 27. The outlet of the ash discharge pipe 11 is communicated with the feeding port at the upper part of the centralized ash bin 24. The outlet of the groove 16 of the ash discharge scraper 15 is communicated with the feeding port at the middle part of the centralized ash bin 24 through the electric gate valve 25, so as to avoid dust overflow during ash discharge. The star-shaped ash discharge valve 27 is arranged at the discharging port at the bottom of the centralized ash bin 24, and uniform discharging can be realized through the star-shaped ash discharge valve 27.

[0023] A small dust removal device 22 is arranged at the top of the centralized ash bin 24. The small dust removal device 22 is internally provided with a pulse valve 21 and a dust removal motor 23, so as to realize dust removal of the centralized ash bin 24.

[0024] A vibrating motor 26 is arranged at the lower conical part of the centralized ash bin 24, so as to avoid dust accumulation at the lower conical part of the centralized ash bin 24.

[0025] The humidifying and stirring system 4 comprises a stirring cylinder 43, a bar stirrer 44 and humidifying nozzles 45. The feeding port at the upper part of the stirring cylinder 43 is communicated with the star-shaped ash discharge valve 27. The stirring cylinder 43 is arranged in a whole downward direction. The bar stirrer 44 is installed in the stirring cylinder 43 along the arrangement direction of the stirring cylinder 43. The bar stirrer 44 is arranged in a tilt direction around the main shaft by using stainless steel bars, so as to reduce material adhesion and provide rotating force. The humidifying nozzles 45 are arranged in multiple groups. The multiple groups of humidifying nozzles 45 are installed on the upper part of the cylinder wall of the stirring cylinder 43 at equal intervals. The humidifying nozzles 45 can rapidly wet dry dust by spraying a large amount of water mist.

[0026] A motor 41 and a speed reducer 42 are connected and arranged above the bar stirrer 44. The motor 41 and the speed reducer 42 are used to realize rotating drive of the bar stirrer 44.

[0027] A discharging chute 46 is vertically connected to the discharging port at the bottom of the stirring cylinder 43. The discharging chute 46 is arranged above the side of the coal belt 5. After the dust is discharged through the star-shaped ash discharge valve 27 and humidified, the dust falls into the coal belt 5 through the discharging chute 46 under the action of its own gravity and the rotating force of the bar stirrer 44.

[0028] The working process of the utility model is: when the deduster 3 body dust discharging is opened, the electric gate valve 25 is opened, the warehouse top small deduster 22 is opened, the manual gate valve 12 is closed, the dust discharging valve 14 and the dust discharging scraper 15 are started, and then the dust can be normally discharged into the centralized dust warehouse 24; the coal yard dust, the dry quenching dust and the dust discharging of the dust discharging pipe 11 can be discharged into the centralized dust warehouse 24; when the dust discharging of the dust car is needed, the electric gate valve 25 is closed, the warehouse top small deduster 22 is started, the manual gate valve 12 is opened, the compressed air is used to assist blowing and discharging, the dust at the bottom of the centralized dust warehouse 24 is evenly discharged into the humidifying and stirring system 4 through the star-shaped dust discharging valve 27, the dry dust is rapidly wetted through spraying a large amount of water mist, and under the rotating force of the rod stirring device 44, the wetted dust falls into the discharging chute 46 and drops onto the mixing coal belt 5, and then the dust is mixed with the mixing coal through the original mixing machine, and after mixing, the mixture is sent into the coke oven for coking.

[0029] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and the person skilled in the art can make various modifications or equivalent replacements to the utility model within the utility model's essence and protection scope, and the modification or equivalent replacement should be regarded as falling within the protection scope of the utility model technical scheme.

Claims

1. A system for repulping coking dust back into coking, characterized by, Including ash removal system, centralized ash bin system, crusher dust collector, humidification mixing system and matching coal belt, the ash removal system includes ash removal pipe and ash removal scraper groove, the outlet of the ash removal pipe and the ash removal scraper groove is communicated with the centralized ash bin system respectively, the humidification mixing system is communicated with the bottom of the centralized ash bin system, the crusher dust collector is arranged above the ash removal scraper groove, and the matching coal belt is arranged at the bottom of the humidification mixing system.

2. The system for coking dedusting ash back blending coking of claim 1, characterized in that: The inlet of the ash removal pipe is also communicated with a compressed air blowing pipe, and a manual gate valve is arranged on the compressed air blowing pipe.

3. The system for coking dedusting ash back blending coking of claim 1, characterized in that: A plurality of groups of crusher dust collectors are connected in parallel above the ash removal scraper groove, a discharge outlet is arranged at the bottom of each group of crusher dust collectors, and an ash removal valve is arranged in the ash removal scraper groove.

4. The system for coking dedusting ash back blending coking of claim 1, characterized in that: The centralized ash bin system includes a centralized ash bin and a star-shaped ash removal valve, the outlet of the ash removal pipe is communicated with the inlet of the upper part of the centralized ash bin, the outlet of the ash removal scraper groove is communicated with the inlet of the middle part of the centralized ash bin through an electric gate valve, and the star-shaped ash removal valve is arranged at the discharge outlet of the bottom of the centralized ash bin.

5. A system for repulping coked dedusting ash according to claim 4, characterized in that: A small dust removal device is arranged at the top of the centralized ash bin, and a pulse valve and a dust removal motor are arranged in the small dust removal device.

6. A system for coking repulped coking plant dust back into coke according to claim 4, characterized in that: A vibration motor is arranged at the lower cone part of the centralized ash bin.

7. The system for coking dedusting ash back blending coking of claim 4, characterized in that: The humidification mixing system includes a stirring cylinder, a bar stirrer and a humidification nozzle, the inlet of the stirring cylinder is communicated with the star-shaped ash removal valve, the stirring cylinder is arranged in a downward direction as a whole, the bar stirrer is installed in the stirring cylinder in the setting direction of the stirring cylinder, and the humidification nozzle is provided with a plurality of groups.

8. A system for coking repulped coking plant dust back into coke according to claim 7, characterized in that: A motor and a speed reducer are connected above the bar stirrer.

9. The system for coking dedusting ash back blending coking of claim 7, characterized in that: A discharge chute is vertically connected to the discharge outlet of the stirring cylinder, and the discharge chute is arranged above one side of the matching coal belt.

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