Water body desilting device for dust removal water seal flue gas tank of coke oven

Abstract

The utility model relates to the technical field of water body treatment, and discloses a coke oven dust removal water seal flue gas tank water body desilting device which comprises a reuse water tank, a sedimentation tank and a flue gas water seal tank, a backflow tank is arranged at the bottom end of the lower end of the sedimentation tank, and the backflow tank is connected with the reuse water tank through a clear water backflow pipe. An accident overflow pipe is mounted on one side of the upper end of the sedimentation tank and divides the sedimentation tank into three transverse independent spaces with the same size, a funnel-shaped mud bucket is mounted in the middle of the interior of each independent space, and a first electric gate valve is arranged at a discharge port in the lower end of each mud bucket; a draining tank is arranged at the lower end of the mud bucket in the three independent spaces and is opposite to the lower end of the first electric gate valve. According to the utility model, labor waste and environmental pollution caused by manual dredging and conveying of mud can be avoided, the use efficiency of reuse water is improved, the flue gas water seal tank can be ensured to stably and continuously run at low cost, and the maintenance is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a device for removing mud from the water body of a coke oven dust removal water seal flue gas tank. Background Art

[0002] Coke oven wastewater mainly comes from the water in the water seal section of the coke oven flue gas pipeline. The water is in direct contact with the flue gas. The sludge production of a single flue gas water seal recycling pool is about 2-3m 3 Each week, the sludge-laden wastewater settles in the reuse tank, and the supernatant is reused in the flue gas water seal system. The water in the reuse tank only comes into contact with the coke oven dust removal flue gas. The sludge in the water is primarily composed of fine coke, which has a small particle size. Since fine coke is a byproduct of the coking plant, it can be used in subsequent processes. Therefore, the sludge is centrally collected and dehydrated before being returned to the production line for reuse.

[0003] At present, the seal water of the coking coke pushing and dust removal water seal main pipe is mixed with the coke oven ash, and the coke oven ash is difficult to separate from the water body. The moisture content of the coke powder accumulated in the sedimentation tank (20) after manual cleaning is too high, and the water flows out during the transportation process, causing ground pollution. At present, most coking plants can only use manual labor or large-scale machinery to clean the sludge in the water seal water body.

[0004] Therefore, those skilled in the art provide a device for removing mud from the water body of a coke oven dust removal water seal flue gas trough to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a device for removing mud from the water body of a coke oven dust removal water seal flue gas trough, which simplifies the operation process of water seal water desilting, reduces the difficulty of desilting, improves the desilting efficiency, and avoids failure of the flue gas water seal trough.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A device for removing mud from a water body in a coke oven dust removal water seal flue gas tank comprises a reuse water tank, a sedimentation tank and a flue gas water seal tank, wherein a return trough is provided at the bottom of the lower end of the sedimentation tank, and the return trough and the reuse water tank are connected by a clean water return pipe, an emergency overflow pipe is installed on one side of the upper end of the sedimentation tank, and the sedimentation tank is divided into three independent spaces of the same size in the transverse direction, a funnel-shaped mud hopper is installed in the middle position of the three independent spaces, and a No. 1 electric gate valve is provided at the discharge port at the lower end of the mud hopper, and a drain trough is placed at the lower end of the mud hopper in the three independent spaces and directly faces the lower end of the No. 1 electric gate valve;

[0008] A backwash pipe is provided at the lower end of the flue gas water seal tank, and the backwash pipe is connected to the reuse water pool and the sedimentation tank respectively through a return pipe. At the same time, five clean water inlets are provided at the upper end of the backwash pipe. The clean water inlets are located inside the flue gas water seal tank and are arranged horizontally. The flue gas water seal tank is connected to three independent spaces inside the sedimentation tank through a water inlet pipe. The reuse water pool is connected to the flue gas water seal tank using a clean water pipe, and the clean water pipe is connected to the backwash pipe.

[0009] Furthermore, a slag poking hole is provided on one side of the outer wall of the mud bucket near the upper end, and a back-blowing hole is provided on the lower end of the side of the outer wall of the mud bucket away from the slag poking hole.

[0010] Furthermore, liquid level gauges are installed on one side of the upper end of the mud hopper inside the three independent spaces. The upper end of the mud hopper in the three independent spaces is the clarified liquid area, while the inside of the mud hopper and the lower end of the mud hopper are the impurity area, and the horizontal line of the upper surface of the mud hopper is used as the dividing line. A clear liquid discharge pipe is installed at the dividing line and the lower end of the clear liquid discharge pipe is located at the bottom end of one side of the drain trough.

[0011] Furthermore, two No. 1 manual valves are provided on the backwash pipe, one of which is close to the return pipe, and the other is located at the tail end of the flue gas water seal groove. No. 2 manual valves are installed at the five clean water outlets, and one side of the three clean water outlets located in the middle position among the five clean water outlets is also equipped with a flushing port and a No. 3 manual valve is installed on the flushing port.

[0012] Furthermore, the lower end of the water inlet pipe is divided into three connecting ports corresponding to three independent spaces, and a No. 2 electric gate valve is installed on each of the three connecting ports.

[0013] Furthermore, a water pump is installed at one end of the clean water pipeline located inside the reuse water pool, and the clean water is pumped into the flue gas water seal tank through the water pump.

[0014] Furthermore, a No. 4 manual valve is installed at one end of the return pipe close to the backwash pipe.

[0015] Furthermore, the bottom of the drain trough is made of a filter screen to ensure that most of the water in the sludge discharged from the sedimentation tank can be drained out.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model proposes a device for removing mud from the water body of the coke oven dust removal water seal flue gas trough, which can avoid the labor waste and environmental pollution caused by manual mud digging and transportation, improve the utilization efficiency of recycled water, and ensure that the flue gas water seal trough can operate stably and continuously at low cost.

[0018] 2. The utility model proposes a device for removing mud from the water body of the water seal flue gas trough of the coke oven dust removal, which does not require special production equipment, simplifies the operation process of water seal water desilting, reduces the difficulty of desilting, improves the desilting efficiency, and avoids the failure of the flue gas water seal trough. It not only has stable operation effect, low investment, but also simple maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the process of the utility model;

[0020] Figure 2 This is a schematic diagram of the framework flow of the utility model;

[0021] Figure 3 This is a schematic diagram of the process structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the external reinforcement structure of the utility model;

[0024] Figure 6 This is a schematic diagram of another external reinforcement structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal reinforcement structure of the utility model;

[0026] Figure 8 This is a schematic diagram of the drain trough structure of the utility model;

[0027] Figure 9 This is a front view diagram of the cable routing within the device of the present invention;

[0028] Figure 10 This is a schematic diagram of the back structure of the cable routing in the device of the present invention;

[0029] Figure 11 This is a top view schematic diagram of the cable routing within the device of the present invention;

[0030] Figure 12 This is another top view schematic diagram of the cable routing within the device of the present invention.

[0031] Legend:

[0032] 1. Flue gas water seal tank; 2. Clean water pipeline; 3. Water inlet pipeline; 4. Accident overflow pipe; 5. No. 2 electric gate valve; 6. Return pipeline; 7. Liquid level gauge; 8. Slag poking hole; 9. Backflush hole; 10. Drain trough; 11. Clean liquid discharge pipe; 12. No. 1 electric gate valve; 13. Clean water return pipe; 14. Recycled water pool; 15. Backwash pipeline; 16. No. 1 manual valve; 17. No. 4 manual valve; 18. No. 2 manual valve; 19. No. 3 manual valve; 20. Sedimentation tank. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1-12 , an embodiment provided by the utility model:

[0035] A device for removing mud from a water body in a coke oven dust removal water seal flue gas tank comprises a reuse water tank 14, a sedimentation tank 20 and a flue gas water seal tank 1. A return trough is provided at the bottom of the lower end of the sedimentation tank 20, and the return trough and the reuse water tank 14 are connected by a clean water return pipe 13. An emergency overflow pipe 4 is installed on one side of the upper end of the sedimentation tank 20, and the sedimentation tank 20 is divided into three independent spaces of the same size in the horizontal direction. A funnel-shaped mud hopper is installed in the middle position of the three independent spaces, and a No. 1 electric gate valve 12 is provided at the discharge port at the lower end of the mud hopper. A drain trough 10 is placed at the lower end of the mud hopper in the three independent spaces and is directly opposite the lower end of the No. 1 electric gate valve 12.

[0036] A backwash pipe 15 is provided at the lower end of the flue gas water seal tank 1, and the backwash pipe 15 is connected to the reuse water pool 14 and the sedimentation tank 20 respectively through the return pipe 6. At the same time, five clean water inlets are provided at the upper end of the backwash pipe 15. The clean water inlets are located inside the flue gas water seal tank 1 and are arranged horizontally. The flue gas water seal tank 1 is connected to the three independent spaces inside the sedimentation tank 20 through the water inlet pipe 3. The reuse water pool 14 is connected to the flue gas water seal tank 1 via the clean water pipe 2, and the clean water pipe 2 is connected to the backwash pipe 15.

[0037] Specifically, the water inlet pipe of the original reuse water pool is changed to be discharged to the sedimentation tank 20. The sedimentation tank 20 is divided into three independent boxes. Each box can realize independent water inlet and drainage, and can also realize automatic overflow of sewage to fill the next box. After the sewage enters the sedimentation tank 20, it is precipitated in the pool for 3-5 hours. The lower part of the sedimentation tank 20 is equipped with a mud bucket and a No. 1 electric gate valve 12 to centrally process and collect the precipitated impurities; and an emergency pipe is reserved at the top of the sedimentation tank 20 to prevent the water in the box from overflowing. Three non-fixed drain troughs 10 are added to the lower part of the mud bucket. The sludge in the mud bucket is discharged into the drain trough 10 for draining. The drained water flows back to the reuse water pool 14 through the return water trough. The drain trough 10 is regularly transported to the production line by a forklift for reuse;

[0038] At the same time, a total of 5 clean water outlets are designed, and each clean water outlet is equipped with a reserved pipe opening to facilitate the use of a water pump to clean the water-sealed flue gas tank later.

[0039] Reference Figure 1 and Figure 3 A slag poking hole 8 is provided at the upper end of one side of the outer wall of the mud hopper, and a back-blowing hole 9 is provided at the lower end of the side of the outer wall of the mud hopper away from the slag poking hole 8. A liquid level gauge 7 is installed on one side of the upper end of the mud hopper inside the three independent spaces. The upper end of the mud hopper in the three independent spaces is a clarified liquid area, while the inside of the mud hopper and the lower end of the mud hopper are impurity areas, and the horizontal line of the upper surface of the mud hopper is used as a dividing line. A clear liquid discharge pipe 11 is installed at the dividing line, and the lower end of the clear liquid discharge pipe 11 is located at the bottom end of one side of the drain trough 10;

[0040] Specifically, the slag poking hole 8 and the back-blowing hole 9 at the upper end can assist in cleaning and dredging the inside of the mud hopper; and the design of the liquid level meter 7 can detect the internal water level; at the same time, a clean water discharge pipe is led out from the upper mouth of the mud hopper to the reuse water pool 14 to discharge the upper clear liquid after the mud and water in the sedimentation tank 20 are settled.

[0041] Reference Figure 1 and Figure 3 , two No. 1 manual valves 16 are provided on the backwash pipe 15, one of which is close to the return pipe 6, and the other is located at the tail end of the flue gas water seal tank 1. A No. 2 manual valve 18 is installed at each of the five clean water outlets, and one side of the three clean water outlets located in the middle of the five clean water outlets is still equipped with a flushing port, and a No. 3 manual valve 19 is installed on the flushing port. The lower end of the water inlet pipe 3 is divided into three connecting ports corresponding to three independent spaces, and a No. 2 electric gate valve 5 is installed on each of the three connecting ports. A water pump is installed at one end of the clean water pipe 2 located inside the reuse water tank 14, and the water is pumped to the flue gas water seal tank 1 through the water pump. A No. 4 manual valve 17 is installed at the end of the return pipe 6 close to the backwash pipe 15;

[0042] Specifically, in order to solve the problem that the water-sealed flue gas trough is too long and sludge is easily deposited and difficult to clean from the middle to the rear section of the trough, a clean water pipe is led from the reuse water tank 14 to the water-sealed flue gas trough, and the treated clear liquid is pumped into the water-sealed flue gas trough through a water pump to replenish water while impacting the sludge at the bottom so that the sludge can be discharged normally through the sludge pipe.

[0043] Reference Figure 1 and Figure 8 The bottom of the drain trough 10 is made of a filter screen to ensure that most of the water in the sludge discharged from the sedimentation tank 20 can be drained out to avoid a large amount of sewage flowing out during the transfer process. When the lower end filter screen is draining, the drained water falls into the return water trough at the lower end and flows back to the reuse water pool 14 through the return water trough. The drain trough 10 can be regularly transported to the production line by a forklift for reuse.

[0044] Working principle: A set of steel sedimentation tank 20 is added to the outside of the reuse water pool, and the original reuse water pool inlet pipe is changed to be discharged to the sedimentation tank 20. The sedimentation tank 20 is provided with 3 boxes, each box can realize independent water inlet and drainage, and can also realize automatic overflow of sewage to fill the next box. After the sewage enters the sedimentation tank 20, it is precipitated in the pool for 3-5 hours. The lower part of the sedimentation tank 20 is equipped with a mud bucket and a plug valve. An emergency pipe is reserved at the upper mouth of the box to avoid overflowing of water in the box. A clean water discharge pipe is led out from the upper mouth of the mud bucket to the reuse water pool 14 to discharge the upper clear liquid after the mud and water in the sedimentation tank 20 are precipitated. Three non-fixed drain troughs 10 are added to the lower part of the mud bucket. The sludge in the mud bucket is discharged into the drain trough 10 for draining. The drained water flows back to the reuse water pool 14 through the return trough. The drain trough 10 is regularly transported to the production line by a forklift for reuse.

[0045] Next, a clean water pipe is drawn from the recycled water tank 14 to the water-sealed flue gas tank. The treated clear liquid is pumped into the water-sealed flue gas tank via a water pump, replenishing the water while simultaneously impacting the sludge at the bottom, allowing it to be discharged normally through the sludge pipe. A total of five clean water inlets are designed, each with a reserved pipe opening to facilitate later use of a water pump to clean the water-sealed flue gas tank.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for removing mud from a water body in a coke oven dust removal water seal flue gas tank, comprising a recycling water pool (14), a sedimentation tank (20) and a flue gas water seal tank (1), characterized in that: The bottom of the lower end of the sedimentation tank (20) is provided with a reflux trough, and the reflux trough is connected to the reuse water pool (14) by a clean water reflux pipe (13). An accident overflow pipe (4) is installed on one side of the upper end of the sedimentation tank (20), and the sedimentation tank (20) is divided into three independent spaces of the same size in the transverse direction. A funnel-shaped mud hopper is installed at the middle position inside the three independent spaces, and a No. 1 electric gate valve (12) is provided at the discharge port at the lower end of the mud hopper. A drain trough (10) is placed at the lower end of the mud hopper in the three independent spaces and is directly opposite to the lower end of the No. 1 electric gate valve (12); The flue gas water seal tank (1) is provided with a backwash pipe (15) at the lower end thereof, and the backwash pipe (15) is respectively connected to the reuse water pool (14) and the sedimentation tank (20) through a return pipe (6). At the same time, five clean water ports are provided at the upper end of the backwash pipe (15), and the clean water ports are arranged transversely inside the flue gas water seal tank (1). The flue gas water seal tank (1) is connected to three independent spaces inside the sedimentation tank (20) through a water inlet pipe (3). The reuse water pool (14) is connected to the flue gas water seal tank (1) through a clean water pipe (2), and the clean water pipe (2) is connected to the backwash pipe (15).

2. The device for removing mud from the water body of a coke oven dust removal water seal flue gas tank according to claim 1, characterized in that: A slag poking hole (8) is provided on one side of the outer wall of the mud bucket near the upper end, and a back-blowing hole (9) is provided on the side of the outer wall of the mud bucket away from the slag poking hole (8) near the lower end.

3. The device for removing mud from the water body of a coke oven dust removal water seal flue gas tank according to claim 1, characterized in that: Liquid level gauges (7) are installed on one side of the upper end of the mud bucket inside the three independent spaces. The upper end of the mud bucket in the three independent spaces is a clarified liquid area, while the interior of the mud bucket and the lower end of the mud bucket are impurity areas, and the horizontal line of the upper surface of the mud bucket is used as a dividing line. A clear liquid discharge pipe (11) is installed at the dividing line, and the lower end of the clear liquid discharge pipe (11) is located at the bottom end of one side of the drain trough (10).

4. The device for removing mud from the water body of a coke oven dust removal water seal flue gas tank according to claim 1, characterized in that: The backwash pipe (15) is provided with two No. 1 manual valves (16), one of which is close to the return pipe (6), and the other No. 1 manual valve (16) is located at the tail end of the flue gas water seal groove (1). The five clean water outlets are all installed with No. 2 manual valves (18), and one side of the three clean water outlets located in the middle of the five clean water outlets is also installed with a flushing port, and the flushing port is installed with a No. 3 manual valve (19).

5. The device for removing mud from the water body of a coke oven dust removal water seal flue gas tank according to claim 1, characterized in that: The lower end of the water inlet pipe (3) is divided into three connecting ports corresponding to three independent spaces, and a No. 2 electric gate valve (5) is installed on each of the three connecting ports.

6. The device for removing mud from the water body of a coke oven dust removal water seal flue gas tank according to claim 1, characterized in that: A water pump is installed at one end of the clean water pipe (2) located inside the reuse water pool (14), and the clean water is pumped into the flue gas water seal tank (1).

7. The device for removing mud from the water body of a coke oven dust removal water seal flue gas tank according to claim 1, characterized in that: A No. 4 manual valve (17) is installed at one end of the return pipe (6) close to the backwash pipe (15).

8. The device for removing mud from the water body of a coke oven dust removal water seal flue gas tank according to claim 1, characterized in that: The bottom of the drain trough (10) is made of a filter screen to ensure that most of the water in the sludge discharged from the sedimentation tank (20) can be drained out.

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