Novel slag-water mixing device for coal water slurry gasification slag pool

Abstract

The utility model discloses a novel slag-water mixing device for a coal water slurry gasification slag pool, and relates to the technical field of coal water slurry gasification washing. The slag pool slag-water mixing device comprises a driving device, a conveying chain, a slag conveyor slag bin, a slag pool water bin body and a slag pool slag-water mixing device body, wherein the driving device is in transmission connection with the conveying chain; according to the utility model, after technical transformation is carried out on slag-water mixing of the slag pool, the problems of insufficient quantity of a slag pool pump and a preheating water pump caused by slag accumulation in a water sump of the slag pool and the like are solved, the root cause of non-uniform slag-water mixing and easy precipitation is found, and meanwhile, the problems of slag-water delivery and insufficient preheating water of an oven are solved; the long-period stable operation of the system is guaranteed, the production benefit is improved, the daily maintenance workload and the frequent inspection and maintenance cost are reduced, the environmental protection problems of poor field environment and the like caused by hopper locking and cutting accident deslagging are reduced, and the purposes of cleanness, environmental protection, energy conservation and efficiency improvement are really achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal water slurry gasification washing, in particular to a novel coal water slurry gasification slag pool slag water mixing device. BACKGROUND

[0002] The slag pool pump and the preheating water pump in the slag extractor become the key equipment of the slag pool ash water circulation, but the slag extractor often has problems such as the blockage of the inlet of the machine pump caused by the slag accumulation in the slag pool during the normal operation process of the coal gasification slag extractor, the coarse slag of the gasification furnace is discharged to the slag extractor bin once every 30 minutes through the lock hopper, the overflow valve is closed during the slag discharge, the overflow valve is opened after the slag water is settled for 5 minutes, and the clarified ash water in the slag pool overflows to the slag pool clean water bin and is pumped into the flash system for treatment.

[0003] At present, the existing slag pool mixer blade material prone to wear is upgraded, and the slag pool is maintained at a low liquid level, which can better alleviate the problem of slag accumulation and blockage in the slag pool in a short time, but as the gasification furnace runs to the later stage, the slag accumulation in the slag pool gradually increases, the slag pool pump and the preheating water pump in the slag pool clean water bin cannot be quantified, and even the slag pool mixer stops, the black water is difficult to transport, and the long-period stable operation of the whole system is seriously affected. UTILITY MODEL CONTENTS

[0004] In order to solve the problem that the slag pool pump and the preheating water pump in the slag pool clean water bin cannot be quantified as the gasification furnace runs to the later stage, and even the slag pool mixer stops and the black water is difficult to transport, the purpose of the utility model is to provide a novel coal water slurry gasification slag pool slag water mixing device.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a novel coal water slurry gasification slag pool slag water mixing device, which comprises a driving device, a conveying chain, a slag extractor bin, a slag pool water bin body and a slag pool slag water mixing device body, the driving device and the conveying chain are in transmission connection, a slag pool water bin and slag bin communication valve is arranged between the slag extractor bin and the slag pool water bin body, a preheating water pump inlet is arranged on the side of the slag pool water bin body away from the slag extractor bin, a slag pool pump inlet is arranged at the back end of the slag pool water bin body, and a hopper is arranged on one side of the driving device.

[0006] Preferably, the top end of the conveying chain is fixedly connected with a scraper.

[0007] Preferably, a preheating water pump body is arranged at the side end of the slag pool water sump body and close to the preheating water pump inlet, and a slag pool pump body is arranged at the back end of the slag pool water sump body and close to the slag pool pump inlet.

[0008] Preferably, the slag pool slag water mixing device body comprises an upper layer air ring pipe body, a lower layer air ring pipe body and an air source conveying pipe.

[0009] Preferably, a plurality of upper layer air ring pipe side nozzles are arranged at the outer circle of the upper layer air ring pipe body, and a plurality of lower layer air ring pipe lower nozzles are arranged at the outer circle of the lower layer air ring pipe body.

[0010] Preferably, a compressed air port is arranged at the top end of the air source conveying pipe.

[0011] Preferably, an upper layer and lower layer air communication pipe is fixedly connected between the upper layer air ring pipe body and the lower layer air ring pipe body.

[0012] Compared with the prior art, the slag pool slag water mixing device has the beneficial effects that:

[0013] In the utility model, after the slag pool slag water mixing is technically reformed, the problems of insufficient quantity of the slag pool pump and the preheating water pump caused by the slag accumulation in the slag pool water sump are solved, the root cause of the uneven slag water mixing and easy precipitation is found out, the problems of insufficient preheating water for slag water delivery and furnace preheating are solved, the long-period stable operation of the system is ensured, the production efficiency is improved, the daily maintenance workload and the frequent inspection and maintenance cost are reduced, the environmental problems caused by the lock hopper cutting accident and the poor on-site environment are reduced, and the purpose of clean environmental protection, energy saving and efficiency increasing is truly achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical schemes in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0015] Figure 1 It is a slag retriever operation principle structure schematic view of the utility model.

[0016] Figure 2 It is a slag pool slag water mixing device structure schematic view of the utility model.

[0017] Figure 3 It is another view structure schematic view of the slag pool slag water mixing device of the utility model.

[0018] Figure 4 It is a slag pool water sump and slag sump communication valve structure schematic view of the utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of the slag pool water tank body of this utility model.

[0020] In the diagram: 1. Slag bin of the slag remover; 2. Main body of the slag pool water bin; 3. Drive unit; 4. Connecting valve between the slag pool water bin and the slag bin; 5. Hopper; 6. Conveyor chain; 15. Main body of the slag pool slag-water mixing device; 16. Main body of the preheating water pump; 17. Inlet of the preheating water pump; 18. Main body of the slag pool pump; 19. Inlet of the slag pool pump; 21. Air source delivery pipe; 22. Compressed air port; 23. Main body of the upper air ring pipe; 24. Connecting pipe between the upper and lower air ring pipes; 25. Side nozzle of the upper air ring pipe; 26. Main body of the lower air ring pipe; 27. Lower nozzle of the lower air ring pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0022] Example: Figures 1-5 As shown, this utility model provides a technical solution: a novel coal-water slurry gasification slag pool slag-water mixing device, including a drive device 3, a conveyor chain 6, a slag bin 1 for a slag remover, a slag pool water tank body 2, and a slag pool slag-water mixing device body 15. The drive device 3 and the conveyor chain 6 are connected by transmission. A slag pool water tank and slag bin communication valve 4 is provided between the slag bin 1 for the slag remover and the slag pool water tank body 2. The slag pool water tank and slag bin communication valve 4 is located near the bottom of the slag pool water tank body 2. A preheating water pump inlet 17 is provided on the side of the slag pool water tank body 2 away from the slag bin 1 for the slag remover. A slag pool pump inlet 19 is provided at the back end of the slag pool water tank body 2. A hopper 5 is provided on one side of the drive device 3.

[0023] In one possible implementation, a scraper is fixedly connected to the top end of the conveyor chain 6.

[0024] By adopting the above technical solution, a valve 4 is set to connect the slag pool water tank and the slag tank, which is used to overflow the clarified ash water in the slag bin 1 of the slag remover to the slag pool water tank body 2 through the valve 4.

[0025] In one possible implementation, a preheating water pump body 16 is provided at the side end of the slag pool water tank body 2 and near the preheating water pump inlet 17, and a slag pool pump body 18 is provided at the back end of the slag pool water tank body 2 and near the slag pool pump inlet 19.

[0026] By adopting the technical scheme, the two slag pool pump bodies 18 are used for sending the ash water overflowing from the slag tank 1 of the slag conveyor to the ash water reservoir body 2 to the flash evaporation system for flash evaporation, and the two preheating water pump bodies 16 are used for sending the water in the ash water reservoir body 2 to the gasification furnace for preheating water circulation when the system is stopped or the gasification furnace is heated, thereby playing a role of cooling the downcomer of the gasification furnace.

[0027] In a possible implementation, the slag pool and slag water mixing device body 15 comprises an upper air ring pipe body 23, a lower air ring pipe body 26 and a gas source conveying pipe 21.

[0028] By adopting the technical scheme, the upper air ring pipe body 23, the lower air ring pipe body 26 and the gas source conveying pipe 21 are made of stainless steel.

[0029] In a possible implementation, the upper air ring pipe body 23 is provided with a plurality of upper air ring pipe side nozzles 25 at the outer circle, and the lower air ring pipe body 26 is provided with a plurality of lower air ring pipe lower nozzles 27 at the outer circle.

[0030] By adopting the technical scheme, the number of the upper air ring pipe side nozzles 25 and the lower air ring pipe lower nozzles 27 is sixteen, and the diameter is fifteen millimeters.

[0031] In a possible implementation, the gas source conveying pipe 21 is provided with a compressed air port 22 at the top end.

[0032] By adopting the technical scheme, the gas source conveying pipe 21 is provided by an external hose station, can well play a role of back blowing and stirring, and uses the back blowing of the lower nozzles and the side nozzles of the ring pipe to drive the turbulent movement of the clean water reservoir slag water, so that the fine slag of the slag pool water reservoir cannot deposit at the bottom of the water reservoir, and the purpose of sufficient stirring is achieved.

[0033] In a possible implementation, the upper air ring pipe body 23 and the lower air ring pipe body 26 are fixedly connected with an upper and lower air communication pipe 24.

[0034] By adopting the technical scheme, the length of the upper and lower air communication pipe 24 is three hundred and fifty millimeters, and the height between the lower air ring pipe body 26 and the bottom of the slag pool water reservoir body 2 is two hundred millimeters.

[0035] Working principle: the coarse slag of gasification furnace is discharged to the slag bin 1 of the slag extractor every thirty minutes through the lock hopper, the communication valve 4 between the slag pool water bin and the slag bin is closed when discharging the slag, the slag pool water bin and the slag bin are communicated after the slag water is settled for five minutes, the clarified ash water in the slag pool overflows to the slag pool water bin body 2, the slag pool slag water mixing device body 15 is arranged in the slag pool water bin body 2, the slag and water are transported to the upper and lower air ring pipes through the air source conveying pipe 21 under the action of the compressed air port 22, are sprayed out from the upper air ring pipe side spout 25 and the lower air ring pipe lower spout 27, the slag water is mixed and moved in all directions, is sent into the flash evaporation system by the slag pool pump body 18, and is treated; the preheated water pump body 16 is used during the heating or parking of the gasification furnace to enter the gasification furnace circulation, the driving device 3 drives the conveying chain 6 to rotate, drives the ring chain to slowly move the scraped plate to take away the coarse slag deposited at the bottom of the slag pool water bin body 2, the taken-out coarse slag is dehydrated after being lifted by the slope section of the slag extractor, falls into the hopper 5 at the bottom, and then is pulled to the pointing position.

[0036] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A novel water-coal slurry gasification slag pool slag water mixing device, comprising a driving device (3), a conveying chain (6), a slag bucket (1), a slag pool water tank body (2) and a slag pool slag water mixing device body (15), characterized in that: The driving device (3) is in transmission connection with the conveying chain (6), a slag pool water tank and slag tank communication valve (4) is arranged between the slag skimmer tank (1) and the slag pool water tank body (2), a preheating water pump inlet (17) is arranged on the side of the slag pool water tank body (2) away from the slag skimmer tank (1), a slag pool pump inlet (19) is arranged on the back end of the slag pool water tank body (2), and a hopper (5) is arranged on one side of the driving device (3).

2. A new type of water-coal slurry gasification slag pool slag water mixing device according to claim 1, characterized in that, The top end of the conveying chain (6) is fixedly connected with a scraper.

3. A new type of water-coal slurry gasification slag pool slag water mixing device according to claim 1, characterized in that, The preheating water pump body (16) is arranged on the side end of the slag pool water tank body (2) and close to the preheating water pump inlet (17), and the slag pool pump body (18) is arranged on the back end of the slag pool water tank body (2) and close to the slag pool pump inlet (19).

4. A new type of water-coal slurry gasification slag pool slag water mixing device according to claim 1, characterized in that, The slag pool slag water mixing device body (15) comprises an upper layer air ring pipe body (23), a lower layer air ring pipe body (26) and an air source conveying pipe (21).

5. A new type of water-coal slurry gasification slag pool slag water mixing device according to claim 4, characterized in that, A plurality of upper layer air ring pipe side nozzles (25) are arranged on the outer ring of the upper layer air ring pipe body (23), and a plurality of lower layer air ring pipe lower nozzles (27) are arranged on the outer ring of the lower layer air ring pipe body (26).

6. A new type of water-coal slurry gasification slag pool slag water mixing device according to claim 4, characterized in that, The top end of the air source conveying pipe (21) is provided with a compressed air port (22).

7. A new type of water-coal slurry gasification slag pool slag water mixing device according to claim 4, characterized in that, The upper layer air ring pipe body (23) and the lower layer air ring pipe body (26) are fixedly connected with an upper layer and lower layer air communication pipe (24).

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