Slag storage device
By setting baffles and overflow pipes in the slag pool, the slag pool is divided into the front and rear bins, and the slag water is introduced into the slag storage tank, which solves the problem of high solid content in the rear bin of the slag pool and achieves stable operation of the slag pool system.
Patent Information
- Application Number
- CN202422981155.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In water-coal slurry gasification units and pulverized coal gasification units, the liquid solid content in the rear bin of the slag pool is high, which causes blockage of the slag pool pump inlet and outlet pipelines and black water pipelines, posing a safety hazard and affecting the long-term stable operation of the unit.
A slag storage device is designed. The slag pool is divided into a front bin and a rear bin by setting a baffle, and the solid slag water in the front bin of the slag pool is introduced into the slag storage tank through an overflow pipe and a slag discharge pipe, thereby reducing the amount of slag entering the rear bin of the slag pool and avoiding pipeline blockage.
It effectively reduces the amount of slag in the rear bin of the slag pool, avoids blockage of the inlet and outlet pipelines of the slag pool pump and the black water pipeline, and improves the safety and stability of the device.
Smart Images
Figure CN223408558U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coal chemical industry, in particular to a slag storage device. Background Art
[0002] In the gasification process with a lock hopper and slag scooping process in a water-coal slurry gasification unit or a pulverized coal gasification unit, during normal operation: the solid slag water discharged from the lock hopper enters the front bin of the slag pool, the upper layer of liquid in the front bin flows into the rear bin of the slag pool through the overflow valve, the slag water in the rear bin is sent to the vacuum flash evaporator through a slag pool pump after flow adjustment, and the black water concentrated after low-pressure flash evaporation enters the vacuum flash evaporator.
[0003] In the vacuum flash evaporator, the black water is further concentrated and the solid content increases. The black water at the bottom of the vacuum flash evaporator is mixed with the flocculant and flows into the clarification tank.
[0004] The slag pool pump and inlet and outlet pipelines and vacuum flash system pipelines are important key systems, and their operating conditions directly affect the safe, stable and long-term operation of the entire gasification unit.
[0005] Although traditional gasification devices have overflow baffles from the front bin to the rear bin of the slag pool, the slag will flow through the overflow baffle into the rear bin, resulting in a high solid content in the rear bin. This can cause the inlet and outlet pipelines of the slag pool pump to become clogged or even worn, leading to leakage of black water acid gas and blockage of the black water pipeline at the bottom of the vacuum flash evaporator. This poses a safety hazard and affects the long-term stable operation of the device. Utility Model Content
[0006] In order to overcome the problem of high solid content in the liquid in the rear bin of the slag pool in the prior art, a slag storage device is provided, which can effectively reduce the amount of slag entering the rear bin of the slag pool.
[0007] In order to achieve the above object, the utility model provides a slag storage device, which includes a slag pool, and the slag pool is provided with a baffle, which separates the slag pool into a slag pool front bin and a slag pool rear bin;
[0008] The upper edge of the baffle is lower than the upper edge of the slag pool side wall;
[0009] The side wall of the front bin of the slag pool is provided with a first material opening, and the side wall of the rear bin of the slag pool is provided with a second material opening;
[0010] The slag storage device further comprises an overflow pipe arranged outside the slag pool, and two ends of the overflow pipe are respectively connected to the first material port and the second material port;
[0011] The slag storage device is also provided with a slag storage tank and a slag discharge pipe;
[0012] One end of the slag discharge pipe is connected to the along-line area of the overflow pipe, and the other end of the slag discharge pipe is connected to the slag storage tank.
[0013] Through the above technical solution, the slag storage device provided by the utility model can effectively reduce the amount of slag entering the rear bin of the slag pool, thereby avoiding blockage and wear of the inlet and outlet pipelines of the slag pool pump and the black water pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a top view of a slag storage device provided by the utility model.
[0015] Description of reference numerals:
[0016] 1- baffle, 2- front bin of slag pool, 3- rear bin of slag pool, 4- overflow pipe, 5- first material port,
[0017] 6—Second material port, 7—Slag storage tank, 8—Slag discharge pipe, 9—Slag discharge valve. DETAILED DESCRIPTION
[0018] The endpoints of the ranges and any values disclosed herein are not limited to the precise ranges or values, and these ranges or values should be understood to include values close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.
[0019] The utility model provides a slag storage device, which comprises a slag pool. The slag pool is provided with a baffle 1, and the baffle 1 divides the slag pool into a slag pool front bin 2 and a slag pool rear bin 3;
[0020] The upper edge of the baffle 1 is lower than the upper edge of the slag pool side wall;
[0021] The side wall of the slag pool front bin 2 is provided with a first feed port 5, and the side wall of the slag pool rear bin 3 is provided with a second feed port 6;
[0022] The slag storage device further comprises an overflow pipe 4 arranged outside the slag pool, and both ends of the overflow pipe 4 are connected to the first material port 5 and the second material port 6 respectively;
[0023] The slag storage device is further provided with a slag storage tank 7 and a slag discharge pipe 8;
[0024] One end of the slag discharge pipe 8 is connected to the along-flow area of the overflow pipe 4 , and the other end of the slag discharge pipe 8 is connected to the slag storage tank 7 .
[0025] In the present invention, the along-line area refers to a certain part of the pipeline along the length direction, and is not limited to the starting point, end point or middle position.
[0026] In the utility model, the solid slag water in the front bin 2 of the slag pool overflows into the overflow pipe 4 through the first material port 5. When it flows through the connection point between the slag discharge pipe 8 and the overflow pipe 4, at least part of the slag in the solid slag water flows into the slag storage tank 7 through the slag discharge pipe 8 under the action of gravity, and the water with reduced slag content flows into the rear bin 3 of the slag pool through the second material port 6.
[0027] The slag storage device provided by the utility model can effectively reduce the amount of slag entering the rear bin 3 of the slag pool, thereby avoiding blockage and wear of the inlet and outlet pipelines of the slag pool pump and the black water pipeline.
[0028] According to the present invention, preferably, one end of the slag discharge pipe 8 is connected to the overflow pipe 4 at a position of 40-60% along the length direction of the overflow pipe 4 .
[0029] According to a preferred embodiment of the present invention, the first feed opening 5 and the second feed opening 6 are each independently located at a distance of 50-80% from the upper edge of the slag pool sidewall, based on the sidewall height of the slag pool. For example, when the sidewall height of the slag pool is 10 meters, the first feed opening 5 and the second feed opening 6 are each independently located at a distance of 5-8 meters from the upper edge of the slag pool sidewall.
[0030] In the present invention, when the first material port 5 and the second material port 6 are arranged in the above range, the solid slag water can be better overflowed and excessive slag can be prevented from entering the slag pool rear bin 3.
[0031] According to a preferred embodiment of the present invention, no grille is provided at the first material opening 5, thereby effectively preventing the first material opening from being blocked.
[0032] According to a preferred embodiment of the present invention, the connection point between the overflow pipe 4 and the slag discharge pipe 8 divides the overflow pipe 4 into a front section and a rear section of the connection point. The front section of the connection point is the overflow pipe 4 between the first material port 5 and the connection point, and the rear section of the connection point is the overflow pipe 4 between the second material port 6 and the connection point.
[0033] The front section of the connection point and the rear section of the connection point are arranged horizontally at a higher height.
[0034] Preferably, the first material port 5, the second material port 6 and the connection point are all at the same height level, so that the clear liquid in the rear section of the connection point can flow smoothly from the second material port 6 into the slag pool rear bin 3.
[0035] According to a preferred embodiment of the present invention, no grille is provided at the rear section of the connection point and adjacent to the connection point.
[0036] In the present invention, not providing a grid can effectively prevent the second material opening from being blocked.
[0037] According to a preferred embodiment of the present invention, a slag discharge valve 9 is provided at the bottom of the slag storage tank 7 for draining the slag and water in the slag storage tank 7 .
[0038] According to a preferred embodiment of the present invention, the diameter of the overflow pipe 4 is 30-35 cm. When the diameter of the overflow pipe 4 is within the above range, the overflow pipe 4 is less likely to be blocked.
[0039] According to a preferred embodiment of the present invention, based on the sidewall height of the slag pool, the upper edge of the baffle 1 is 1-10% higher than the upper edge of the first material opening 5. For example, when the sidewall height of the slag pool is 10m, the upper edge of the baffle 1 is 0.1-1m higher than the upper edge of the first material opening 5.
[0040] At this time, compared with overflowing through the upper edge of the baffle 1, the solid slag water can overflow through the overflow pipe 4 first.
[0041] According to a preferred embodiment of the present invention, the volume ratio of the slag pool front bin 2 to the slag pool rear bin 3 is 2-4:1.
[0042] When the volume ratio of the slag pool front bin 2 to the slag pool rear bin 3 is within the above range, the slag in the solid slag water in the slag pool front bin 2 can settle better.
[0043] According to a preferred embodiment of the present invention, overflow pipes 4 are respectively provided on two opposite side walls of the slag pool, and each overflow pipe 4 is provided with a slag storage tank 7 connected thereto.
[0044] In the present invention, overflow pipes 4 are respectively provided on two opposite side walls of the slag pool to increase the processing capacity of the slag storage device.
[0045] According to a particularly preferred embodiment of the present invention, Figure 1 As shown:
[0046] The slag storage device comprises a slag pool, wherein the slag pool is provided with a baffle 1, and the baffle 1 separates the slag pool into a slag pool front bin 2 and a slag pool rear bin 3;
[0047] The upper edge of the baffle 1 is lower than the upper edge of the slag pool side wall;
[0048] The side wall of the slag pool front bin 2 is provided with a first feed port 5, and the side wall of the slag pool rear bin 3 is provided with a second feed port 6;
[0049] The slag storage device further comprises an overflow pipe 4 arranged outside the slag pool, and both ends of the overflow pipe 4 are connected to the first material port 5 and the second material port 6 respectively;
[0050] The slag storage device is further provided with a slag storage tank 7 and a slag discharge pipe 8;
[0051] One end of the slag discharge pipe 8 is connected to the along-flow area of the overflow pipe 4 , and the other end of the slag discharge pipe 8 is connected to the slag storage tank 7 .
[0052] One end of the slag discharge pipe 8 is connected to the overflow pipe 4 at a position 40-60% of the length of the overflow pipe 4.
[0053] Taking the side wall height of the slag pool as a reference, the first material opening 5 and the second material opening 6 are independently arranged at a position 50-80% away from the upper edge of the side wall of the slag pool.
[0054] No grid is provided at the first material opening 5 .
[0055] The connection point between the overflow pipe 4 and the slag discharge pipe 8 divides the overflow pipe 4 into a front section and a rear section. The front section is the overflow pipe 4 between the first material port 5 and the connection point, and the rear section is the overflow pipe 4 between the second material port 6 and the connection point.
[0056] The front section of the connection point and the rear section of the connection point are arranged at the same height level.
[0057] The first material opening 5, the second material opening 6 and the connection point are all located at the same height level.
[0058] No grille is provided at the rear section of the connection point and adjacent to the connection point.
[0059] A slag discharge valve 9 is provided at the bottom of the slag storage tank 7 .
[0060] The diameter of the overflow pipe 4 is 30-35 cm.
[0061] Based on the height of the slag pool's sidewalls, the upper edge of the baffle 1 is 1-10% higher than the upper edge of the first material inlet 5. The volume ratio of the slag pool front bin 2 to the slag pool rear bin 3 is 2-4:1. Overflow pipes 4 are provided on two opposing sidewalls of the slag pool, each of which is connected to a slag storage tank 7.
[0062] The slag storage device provided by the utility model can effectively reduce the amount of slag entering the slag pool rear bin 3 by providing an overflow pipe 4 and a slag storage tank 7 connected thereto, thereby avoiding blockage and wear of the slag pool pump inlet and outlet pipelines and the black water pipeline.
[0063] Furthermore, by optimizing the setting heights of the first material port 5 and the second material port 6, the solid slag water can overflow better, while preventing excessive slag from entering the slag pool rear bin 3.
[0064] Furthermore, by arranging the front section and the rear section of the connection point at the same height, the clear liquid passing through the rear section of the connection section can smoothly enter the second material port 6 and flow into the rear bin 3 of the slag pool.
[0065] Furthermore, by optimizing the diameter of the overflow pipe 4, the overflow pipe 4 is less likely to be blocked.
[0066] Furthermore, by optimizing the height difference between the upper edge of the baffle 1 and the upper edge of the first material port 5 , the solid slag water can preferentially overflow through the overflow pipe 4 .
[0067] Furthermore, by optimizing the volume ratio of the slag pool front bin 2 to the slag pool rear bin 3, the slag in the solid slag water in the slag pool front bin 2 can be better settled.
[0068] Furthermore, by respectively arranging overflow pipes 4 on two opposite side walls of the slag pool, the processing capacity of the slag storage device is increased.
[0069] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be considered as disclosed in the present invention and fall within the scope of protection of the present invention.
Claims
1. A slag storage device, characterized in that: The slag storage device comprises a slag pool, wherein the slag pool is provided with a baffle (1), and the baffle (1) separates the slag pool into a slag pool front bin (2) and a slag pool rear bin (3); The upper edge of the baffle (1) is lower than the upper edge of the slag pool side wall; The side wall of the slag pool front bin (2) is provided with a first material opening (5), and the side wall of the slag pool rear bin (3) is provided with a second material opening (6); The slag storage device further comprises an overflow pipe (4) arranged outside the slag pool, and the two ends of the overflow pipe (4) are respectively connected to the first material port (5) and the second material port (6); The slag storage device is further provided with a slag storage tank (7) and a slag discharge pipe (8); One end of the slag discharge pipe (8) is connected to the along-line area of the overflow pipe (4), and the other end of the slag discharge pipe (8) is connected to the slag storage tank (7).
2. The slag storage device according to claim 1, characterized in that: Taking the side wall height of the slag pool as a reference, the first material opening (5) and the second material opening (6) are independently arranged at a distance of 50-80% from the upper edge of the side wall of the slag pool.
3. The slag storage device according to claim 1 or 2, characterized in that: No grid is provided at the first material opening (5).
4. The slag storage device according to claim 1 or 2, characterized in that: The connection point between the overflow pipe (4) and the slag discharge pipe (8) divides the overflow pipe (4) into a front section of the connection point and a rear section of the connection point, wherein the front section of the connection point is the overflow pipe (4) between the first material port (5) and the connection point, and the rear section of the connection point is the overflow pipe (4) between the second material port (6) and the connection point; The first material opening (5), the second material opening (6), the front section of the connection point and the rear section of the connection point are all arranged at the same height.
5. The slag storage device according to claim 4, characterized in that: No grille is provided at the rear section of the connection point and adjacent to the connection point.
6. The slag storage device according to claim 1 or 2, characterized in that: A slag discharge valve (9) is provided at the bottom of the slag storage tank (7).
7. The slag storage device according to claim 1 or 2, characterized in that: The overflow pipe (4) has a diameter of 30-35 cm.
8. The slag storage device according to claim 1 or 2, characterized in that: Taking the side wall height of the slag pool as a reference, the upper edge of the baffle (1) is 1-10% higher than the upper edge of the first material opening (5).
9. The slag storage device according to claim 1 or 2, characterized in that: The volume ratio of the slag pool front bin (2) to the slag pool rear bin (3) is 2-4:
1.
10. The slag storage device according to claim 1 or 2, characterized in that: Overflow pipes are respectively provided on two opposite side walls of the slag pool.