Coke furnace slag slurry separation system

Abstract

The invention provides a coke oven slag slurry separation system which comprises a top tank and a separation tank, the top tank is provided with a slag discharge port and a slag discharge pipeline, one end of the slag discharge pipeline is communicated with the slag discharge port, the top of the separation tank is provided with an opening, the bottom of the separation tank is provided with a slurry discharge port, the top of the separation tank is detachably provided with a separation part, and the input end of the separation part is communicated with the other end of the slag discharge pipeline; wherein the separation part is provided with a slag discharging flow channel and a slurry leakage hole, the height of the slag discharging flow channel is gradually reduced in the slag slurry flowing direction, the output end of the slag discharging flow channel is located outside the separation tank, and the slurry leakage hole is located inside the separation tank. The slurry and slag blocks in the slag slurry are separated through the separating part, when the separating part is blocked, the separating part can be directly detached, the detached separating part is convenient to clean, safety risks caused by operation are effectively eradicated, and the requirement for smooth production is met.

Description

Technical Field

[0001] The invention relates to the technical field of coke oven slag slurry cleaning, in particular to a coke oven slag slurry separation system. Background Art

[0002] Desulfurization and denitrification are important technical measures for preventing and controlling air pollution, primarily used to reduce sulfur oxides and ammonia oxides in flue gas. To meet national ultra-low emission requirements for steel companies, coke oven flue gas must be treated with desulfurization and denitrification equipment to meet standards before being discharged.

[0003] The top tank is located at the top of the desulfurization tower. Its function is to mix the injected lime slurry with the desulfurization slurry, filter it, and send it to the atomizer at the lower end. Although the two slurries are filtered separately before injection to remove most of the slurry residue, there are still some residues that enter the top tank along the pipeline, adhere to the outlet screen, and block the filter. Manual cleaning can only be done with a wire, which is time-consuming and labor-intensive. The slurry is also corrosive. During the cleaning operation, if you are not careful, skin burns will occur, and it will splash into the eyes, which is more likely to cause personal injury accidents. Summary of the Invention

[0004] The invention provides a coke oven slag slurry separation system to solve the technical problem that the slurry slurry blocks the filter screen and can only be cleaned manually by cleaning with a wire, which is time-consuming and labor-intensive.

[0005] The present invention provides a coke oven slag slurry separation system, comprising:

[0006] A top tank, wherein the top tank has a slag discharge port and a slag discharge pipe, one end of the slag discharge pipe is connected to the slag discharge port;

[0007] A separation tank, wherein the top of the separation tank has an opening, the bottom of the separation tank is provided with a slurry discharge port, the top of the separation tank is detachably provided with a separation piece, and the input end of the separation piece is connected to the other end of the slag discharge pipe;

[0008] The separation element has a slag discharge channel and a slurry leakage hole. The height of the slag discharge channel is gradually reduced along the slurry flow direction. The output end of the slag discharge channel is located outside the separation tank, and the slurry leakage hole is located inside the separation tank.

[0009] In one embodiment of the present invention, the coke oven slag slurry separation system also includes a backwash pipe, and a first control valve and a second control valve are sequentially arranged on the slag discharge pipe along the slurry flow direction. The backwash pipe is connected to the slag discharge pipe, and the connection point between the backwash pipe and the slag discharge pipe is located between the first control valve and the second control valve.

[0010] In one embodiment of the present invention, the backwash pipe includes a first branch and a second branch in parallel, the first branch is connected to the slag discharge pipe, the second branch is located above the slag discharge channel, and multiple nozzles are provided on the second branch, and the multiple nozzles are all arranged toward the slag discharge channel.

[0011] In one embodiment of the present invention, a third control valve is provided on the first branch line, and a fourth control valve is provided on the second branch line.

[0012] In one embodiment of the present invention, liquid level detection devices are provided in both the top tank and the separation tank.

[0013] In one embodiment of the present invention, the diameter of the leakage hole is 3.5 mm, and a plurality of the leakage holes are provided. The plurality of leakage holes are evenly arranged on the separation element, and the plurality of leakage holes are spaced 5 mm apart.

[0014] In one embodiment of the present invention, the inclination angle of the slag discharge channel ranges from 12 to 17 degrees.

[0015] In one embodiment of the present invention, the plurality of nozzles are tilted, and the tilt angle of the plurality of nozzles is 35 degrees.

[0016] Beneficial effects of the present invention: The present invention proposes a coke oven slag slurry separation system, which separates the slurry and slag blocks in the slurry by setting a separation tank and a separation component. When the separation component is blocked, the separation component can be directly disassembled. The disassembled separation component is easy to clean, effectively eliminating the safety risks caused by the operation and ensuring the smooth production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0018] In the attached figure:

[0019] Figure 1 A structural diagram provided for an embodiment of the present invention.

[0020] The reference numerals are as follows:

[0021] 1. Top tank; 2. Separation tank; 3. Slag discharge pipe; 31. First control valve; 32. Second control valve; 4. First feed pipe; 5. Second feed pipe; 6. Separator; 7. Backwash pipe; 71. First branch; 72. Second branch; 73. Nozzle; 74. Third control valve; 75. Fourth control valve. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments. The details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. The following embodiments and features therein may be combined with one another without conflict.

[0023] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0024] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring the embodiments of the present invention.

[0025] See Figure 1 , Figure 1A coke oven slag slurry separation system is provided for one embodiment of the present invention, comprising a top tank 1 and a separation tank 2, wherein the top tank 1 has a slag discharge port and a slag discharge pipe 3, the slag discharge port is located at the bottom of the top tank 1, and a first feed pipe 4 is further provided on the top of the top tank 1 for inputting slurry, and a second feed pipe 5 is further provided on the top of the slag discharge port. The second feed pipe 5 is used to input desulfurization slurry, which is more convenient for separating large pieces of slag in the slurry, and one end of the slag discharge pipe 3 is connected to the slag discharge port, the top of the separation tank 2 has an opening, the bottom of the separation tank 2 is provided with a slurry discharge port, and a separation member 6 is detachably provided on the top of the separation tank 2, and the input end of the separation member 6 is connected to the other end of the slag discharge pipe 3; a separation member 6 is provided at the bottom of both the top tank 1 and the separation tank 2. There is a stirring device. The stirring device of the top tank 1 plays a role in fully mixing the mixed slurry. The main function of the stirring device of the separation tank 2 is to facilitate the solidification of the slurry. Among them, the separation element 6 has a slag discharge channel and a slurry leakage hole. The height of the slag discharge channel is gradually reduced along the flow direction of the slurry. The output end of the slag discharge channel is located outside the separation tank 2, and the slurry leakage hole is located inside the separation tank 2. The slag discharge channel discharges large pieces of debris in the slurry, and the slurry leakage hole allows the slurry to leak into the interior of the separation tank 2. The diameter of the leakage hole is smaller than the minimum width of the debris, and the slurry can be separated. In addition, the separation element 6 is detachable. When the separation element 6 needs to be cleaned, the separation element 6 is disassembled separately for cleaning, which reduces the work intensity.

[0026] Specifically, in an optional embodiment of the present application, the system further includes a backwashing pipe 7, and a first control valve 31 and a second control valve 32 are sequentially arranged on the slag discharge pipe 3 along the slurry flow direction. The backwashing pipe 7 is connected to the slag discharge pipe 3, and the connection point between the backwashing pipe 7 and the slag discharge pipe 3 is located between the first control valve 31 and the second control valve 32. When the slag discharge pipe 3 is working normally, the first control valve 31 and the second control valve 32 are both in an open state. When the slag discharge pipe 3 is blocked, flushing is required. The first control valve 31 is opened first, and the second control valve 32 is closed, so that the backwashing pipe 7 flushes the front section of the slag discharge pipe 3 (the section with the first control valve 31). After the flushing of the front section of the slag discharge pipe 3 is completed, the first control valve 31 is closed, and the second control valve 32 is opened, so that the backwashing pipe 7 flushes the rear section of the slag discharge pipe 3 (the section with the second control valve 32), which makes it easier to clean the slag discharge pipe 3 and avoid blockage.

[0027] Specifically, in an optional embodiment of the present application, the backwash pipe 7 includes a first branch 71 and a second branch 72 in parallel, the first branch 71 is connected to the slag discharge pipe 3, the second branch 72 is located above the slag discharge channel, and a plurality of nozzles 73 are provided on the second branch 72, and the plurality of nozzles 73 are all arranged toward the slag discharge channel. The plurality of nozzles 73 are arranged in sequence along the liquid flow direction of the second branch 72, and the plurality of nozzles 73 continuously flush the slag discharge channel. When the mixed slurry flows through the slag discharge channel, bubbles generated by tension are formed to block the leakage hole, and high-pressure spraying can burst the bubbles to complete the clearing.

[0028] Specifically, in an optional embodiment of the present application, a third control valve 74 is provided on the first branch 71, and a fourth control valve 75 is provided on the second branch 72. During normal operation, the third control valve 74 is closed and the fourth control valve 75 is opened. When backwashing is performed, the third control valve 74 is opened and the fourth control valve 75 is closed.

[0029] Specifically, in an optional embodiment of the present application, a liquid level detection device is provided in both the top tank 1 and the separation tank 2. The liquid level detection device is used to detect the liquid level height and output an alarm when the liquid level is abnormal. A slurry discharge pipeline is provided at the bottom of the separation tank 2. A fifth control valve and a regulating valve are provided on the slurry discharge pipeline. The liquid level detection device of the separation tank 2 is linked with the regulating valve to control the liquid level height. The liquid level detection device of the top tank 1 is linked with the second control valve 32 (in this embodiment, the second control valve 32 is a regulating valve) to control the liquid level height.

[0030] Specifically, in an optional embodiment of the present application, the diameter of the leakage hole is 3.5 mm, and there are multiple leakage holes, which are evenly arranged on the separation member 6, with an interval of 5 mm between the multiple leakage holes.

[0031] Specifically, in an optional embodiment of the present application, the inclination angle of the slag discharge channel ranges from 12 to 17 degrees. Preferably, the inclination angle of the slag discharge channel is 15 degrees, and a slag discharge trough is further provided at the output end of the slag discharge channel, and the slag discharge trough is inclined at 45 degrees.

[0032] Specifically, in an optional embodiment of the present application, the plurality of nozzles 73 are arranged at an angle, and the inclination angle of the plurality of nozzles 73 is 35 degrees.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A coke oven slag slurry separation system, characterized in that: include: A top tank, wherein the top tank has a slag discharge port and a slag discharge pipe, one end of the slag discharge pipe is connected to the slag discharge port; A separation tank, wherein the top of the separation tank has an opening, the bottom of the separation tank is provided with a slurry discharge port, the top of the separation tank is detachably provided with a separation piece, and the input end of the separation piece is connected to the other end of the slag discharge pipe; The separation element has a slag discharge channel and a slurry leakage hole. The height of the slag discharge channel is gradually reduced along the slurry flow direction. The output end of the slag discharge channel is located outside the separation tank, and the slurry leakage hole is located inside the separation tank.

2. A coke oven slurry separation system according to claim 1, characterized in that: The coke oven slag slurry separation system also includes a backwash pipe, and a first control valve and a second control valve are sequentially arranged on the slag discharge pipe along the slurry flow direction. The backwash pipe is connected to the slag discharge pipe, and the connection point between the backwash pipe and the slag discharge pipe is located between the first control valve and the second control valve.

3. A coke oven slag slurry separation system according to claim 2, characterized in that: The backwash pipeline includes a first branch and a second branch connected in parallel. The first branch is connected to the slag discharge pipeline. The second branch is located above the slag discharge channel. A plurality of nozzles are provided on the second branch. The plurality of nozzles are all arranged toward the slag discharge channel.

4. A coke oven slag slurry separation system according to claim 3, characterized in that: The first branch is provided with a third control valve, and the second branch is provided with a fourth control valve.

5. The coke oven slag slurry separation system according to claim 1, characterized in that: Liquid level detection devices are provided in both the top tank and the separation tank.

6. The coke oven slag slurry separation system according to claim 1, characterized in that: The diameter of the leakage hole is 3.5 mm, and there are multiple leakage holes. The multiple leakage holes are evenly arranged on the separation piece, and the intervals between the multiple leakage holes are 5 mm.

7. The coke oven slag slurry separation system according to claim 1, characterized in that: The inclination angle of the slag discharge channel ranges from 12 to 17 degrees.

8. The coke oven slag slurry separation system according to claim 3, characterized in that: The plurality of nozzles are arranged at an angle, and the angle of inclination of the plurality of nozzles is 35 degrees.

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