A coke oven gas pipeline tar treatment device
By installing a settling pipe at the lowest point of the coke oven gas pipeline and using valves to control and purge the pipeline to remove tar, the problem of coke oven gas pipeline blockage was solved, achieving rapid cleaning and production continuity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SHAGANG STEEL CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-30
AI Technical Summary
In existing technologies, coke oven gas pipelines are often blocked by tar buildup, requiring dismantling and cleaning, which is time-consuming, costly, and affects production efficiency.
A settling pipe is installed at the lowest point of the coke oven gas pipeline. Gravity allows tar to flow into the settling pipe. Compressed gas is then blown into the pipeline through valves to clean the tar, thus avoiding the need to dismantle the pipeline.
It enables rapid removal of tar, ensures unobstructed pipelines, reduces production costs, improves production efficiency, and reduces safety hazards.
Smart Images
Figure CN224433880U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tar treatment equipment, and in particular to a tar treatment device for coke oven gas pipelines. Background Technology
[0002] In the steelmaking process, molten iron needs to undergo desulfurization treatment by stirring before entering the converter. The stirring head used for this process needs to be pre-baked at high temperatures in a baking oven using coke oven gas. However, the tar content in the coke oven gas accumulates in the baking oven's gas pipes after prolonged use, causing the gas pipes to narrow or even completely blockage, affecting the oven's normal operation. Currently, the method for dealing with blocked gas pipes is to dismantle the pipes and clean out the tar inside. This method is time-consuming and costly, impacting production efficiency and hindering continuous steelmaking production. Summary of the Invention
[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem of high time and production cost in cleaning tar by dismantling the baking oven pipeline in the prior art. In this way, a tar treatment device for coke oven gas pipeline is provided. By setting a settling pipe for temporary storage of tar at the lowest point of the gas pipeline, the tar is cleaned by purging the settling pipe. There is no need to dismantle the gas pipeline, which significantly reduces production costs and improves production efficiency.
[0004] To solve the above-mentioned technical problems, this utility model provides a coke oven gas pipeline tar treatment device, which is applied to the coke oven gas pipeline of a drying oven. The side wall of the coke oven gas pipeline has an opening located at the lowest horizontal point of the coke oven gas pipeline. The device includes…
[0005] A settling pipe is installed below the coke oven gas pipeline and one end is connected to the pipe opening;
[0006] Multiple valves are installed on the settling pipe;
[0007] A purging pipe that connects to the settling pipe and is also connected to the settling pipe between adjacent valves;
[0008] A vent pipe that connects to the settling pipe and is also connected to the settling pipe between adjacent valves.
[0009] In one embodiment of this utility model, the plurality of valves includes a first valve and a second valve, wherein the first valve is installed on the upper part of the settling pipe and the second valve is installed on the lower part of the settling pipe.
[0010] In one embodiment of this utility model, the settling pipe extends downward from the pipe opening.
[0011] In one embodiment of the present invention, the plurality of valves further include a third valve and a fourth valve, wherein the third valve is installed in the purge pipe and the fourth valve is installed in the vent pipe.
[0012] In one embodiment of this utility model, the valve is configured as a shut-off valve.
[0013] In one embodiment of the present invention, a nozzle extends outward from the edge of one end of the settling pipe connected to the pipe opening. The nozzle is located on one side of the settling pipe along the gas flow direction inside the coke oven gas pipeline, and the nozzle is located on the side of the settling pipe close to the gas source of the coke oven gas pipeline.
[0014] In one embodiment of this utility model, the nozzle is wider at the top and narrower at the bottom.
[0015] In one embodiment of this utility model, the purging pipe is connected to the upper part of the settling pipe.
[0016] In one embodiment of this utility model, the vent pipe is connected to the upper part of the settling pipe.
[0017] In one embodiment of this utility model, the purging pipe is connected to the settling pipe between the vent pipe and the first valve.
[0018] In one embodiment of this utility model, the lower end of the settling pipe is sealed by a flange.
[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:
[0020] The coke oven gas pipeline tar treatment device of this utility model connects a settling pipe to the lowest horizontal point of the coke oven gas pipeline. Tar in the coke oven gas pipeline flows naturally into the settling pipe under gravity, preventing tar accumulation and blockage. Regular cleaning of the settling pipe ensures unobstructed gas flow. Multiple valves are installed inside the settling pipe; opening or closing these valves isolates the settling pipe from the gas pipeline, ensuring that purging work and normal operation of the coke oven gas pipeline do not interfere with each other, guaranteeing continuous production. Compressed gas is blown into the settling pipe through the purging pipe, quickly cleaning the tar from the settling pipe. Before purging the tar, the gas in the settling pipe is vented through a vent pipe, reducing safety hazards. Attached Figure Description
[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0022] Figure 1 This is a schematic diagram of the structure of the coke oven gas pipeline tar treatment device in a preferred embodiment of the present invention.
[0023] Explanation of the reference numerals in the accompanying drawings: 1. Coke oven gas pipeline; 11. Lowest point of the horizontal height of the coke oven gas pipeline; 111. Pipe opening; 2. Settling pipe; 21. Lower part of the settling pipe; 22. Upper part of the settling pipe; 221. Nozzle; 3. First valve; 4. Second valve; 5. Vent pipe; 6. Purge pipeline; 7. Fourth valve; 8. Third valve. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.
[0025] Reference Figure 1 As shown, in one embodiment of this utility model, a coke oven gas pipeline tar treatment device is disclosed, which is applied to the coke oven gas pipeline 1 of the baking oven. The side wall of the coke oven gas pipeline 1 is provided with a pipe opening 111, and the pipe opening 111 is located at the lowest horizontal height 11 of the coke oven gas pipeline 1. The device includes...
[0026] Settlement pipe 2 is installed below the coke oven gas pipeline 1 and one end is connected to the pipe opening 111;
[0027] Multiple valves are installed on the settling pipe 2;
[0028] A purging pipe 6 is connected to the settling pipe 2 and is also connected to the settling pipe 2 between adjacent valves;
[0029] The vent pipe 5 is connected to the settling pipe 2 and is also connected to the settling pipe 2 between adjacent valves.
[0030] The coke oven gas pipeline tar treatment device described in this embodiment addresses the issue that tar mostly accumulates at the lowest point 11 of the gas pipeline 1. A settling pipe 2 is connected to the lowest horizontal point 11 of the coke oven gas pipeline 1. Under gravity, the tar in the coke oven gas pipeline 1 flows naturally into the settling pipe 2 through the pipe opening 111, preventing tar buildup and blockage within the pipeline 1. Regular cleaning of the settling pipe 2 ensures unobstructed gas flow in the gas pipeline 1. Compressed gas is periodically blown into the settling pipe 2 through the purging pipe 6, using the compressed gas to purge the tar out of the settling pipe 2, thus quickly cleaning the tar inside. Multiple valves are installed inside the settling pipe 2; opening or closing these valves isolates the settling pipe 2 from the gas pipeline 1, ensuring that the purging work and the normal operation of the coke oven gas pipeline 1 do not interfere with each other, guaranteeing production continuity. Before purging the tar in the settling pipe 2, the gas in the settling pipe 2 is vented through the vent pipe 5, reducing safety hazards.
[0031] In one embodiment of this utility model, a pipe opening 111 is cut at the lowest horizontal height 11 of the gas pipeline 1 to ensure that the pipe opening 111 matches the end of the settling pipe 2. Then, the end of the settling pipe 2 is welded to the position of the pipe opening 111 by welding, and the weld is ensured to be well sealed.
[0032] Reference Figure 1 As shown, in one embodiment of this utility model, the plurality of valves include a first valve 3 and a second valve 4. The first valve 3 is installed on the upper part 22 of the settling pipe 2. Under normal working conditions of the oven, the first valve 3 is in the open state to ensure that the tar in the gas pipeline 1 flows naturally into the settling pipe 2. When cleaning the tar in the settling pipe 2, the first valve 3 is in the closed state to physically isolate the settling pipe 2 from the gas pipeline 1. The second valve 4 is installed on the lower part 21 of the settling pipe 2. Under normal working conditions of the oven, the second valve 4 is in the closed state to ensure that the gas pipeline 1 does not leak. When cleaning the tar in the settling pipe 2, the second valve 4 is in the open state so that the tar can be discharged from the bottom end of the settling pipe 2.
[0033] Reference Figure 1 As shown, in one embodiment of this utility model, the settling pipe 2 extends downward from the pipe opening 111. This can be understood as the settling pipe 2 being set vertically downward or inclined downward, as long as it is ensured that the tar can flow from the upper end to the lower end of the settling pipe 2 by its own gravity.
[0034] Reference Figure 1As shown, in one embodiment of this utility model, the plurality of valves further include a third valve 8 and a fourth valve 7. The third valve 8 is installed on the purging pipe 6. When purging the settling pipe 2, the third valve 8 is opened to allow compressed gas to enter the settling pipe 2 from the purging pipe 6. The fourth valve 7 is installed on the vent pipe 5. Before purging the settling pipe 2, the fourth valve 7 is opened to allow the gas in the settling pipe 2 to be discharged, reducing the risk of explosion during the purging operation. The gas in the settling pipe 2 flows through the vent pipe 5 to a designated location for collection, preventing gas poisoning of on-site personnel.
[0035] In one embodiment of this utility model, the other end of the purging pipe 6 is connected to a steam purging device, which can generate high-pressure steam. The steam purging device introduces the high-pressure steam into the settling pipe 2 to purge the tar.
[0036] In one embodiment of this utility model, all of the valves are configured as shut-off valves.
[0037] Reference Figure 1 As shown, in one embodiment of this utility model, the edge of one end of the settling pipe 2 connected to the pipe opening 111 extends outward to form a nozzle 221 that also connects to the pipe opening 111. The nozzle 221 gradually narrows from top to bottom and is used to guide the tar at the bottom of the gas pipeline 1, ensuring that the tar flows naturally from the gas pipeline 1 into the settling pipe 2 below. The nozzle 221 is located on one side of the settling pipe 2 along the gas flow direction in the coke oven gas pipeline 1, which is beneficial for the tar to flow along the nozzle 221 with the help of the gas thrust. The nozzle 221 is located on the side of the settling pipe 2 close to the gas source of the coke oven gas pipeline 1, so that the opening direction of the nozzle 221 faces the source side of the coke oven gas.
[0038] Reference Figure 1 As shown, in one embodiment of this utility model, the nozzle 221 is wider at the top and narrower at the bottom, which is beneficial for accelerating the aggregation and flow of tar.
[0039] Reference Figure 1 As shown, in one embodiment of this utility model, since the lower part 21 of the settling pipe 2 is used to temporarily store tar, the purging pipe 6 is connected to the upper part 22 of the settling pipe 2 to reduce the backflow of tar into the settling pipe 2.
[0040] Reference Figure 1 As shown, in one embodiment of the present invention, the venting pipe 5 is connected to the upper part 22 of the settling pipe 2 to reduce the backflow of tar into the venting pipe 5.
[0041] Reference Figure 1As shown, in one embodiment of this utility model, the purging pipe 6 is connected to the settling pipe 2 between the vent pipe 5 and the first valve 3, with the aim of purging the gas as completely as possible.
[0042] Reference Figure 1 As shown, in one embodiment of this utility model, the lower end of the settling pipe 2 is sealed by a flange. The purpose is to prevent gas from leaking from the bottom end of the settling pipe 2 after the first valve 3 and the second valve 4 fail, and to provide additional sealing protection when the second valve 4 is open. When cleaning the tar in the settling pipe 2, the flange can be removed.
[0043] The working principle of the coke oven gas pipeline tar treatment device described in this utility model is as follows:
[0044] When cleaning the tar in the settling pipe 2, first close the first valve 3 to ensure that the gas pipeline 1 does not leak. Then open the fourth valve 7 to discharge the gas in the settling pipe 2. After checking that there is no residual gas in the settling pipe 2, close the fourth valve 7 again. Then open the third valve 8 and the second valve 4 to introduce high-pressure steam into the settling pipe 2 to purge the tar in the settling pipe 2. After the tar is discharged, close the second valve 4 and the third valve 8 again, and then open the first valve 3.
[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A tar treatment device for coke oven gas pipelines, applied to coke oven gas pipelines in a drying oven, wherein a pipe opening is provided on the side wall of the coke oven gas pipeline, the pipe opening being located at the lowest horizontal point of the coke oven gas pipeline, characterized in that, include, A settling pipe is installed below the coke oven gas pipeline and one end is connected to the pipe opening; Multiple valves are installed on the settling pipe; A purging pipe that connects to the settling pipe and is also connected to the settling pipe between adjacent valves; A vent pipe that connects to the settling pipe and is also connected to the settling pipe between adjacent valves.
2. The coke oven gas pipeline tar treatment device according to claim 1, characterized in that, The plurality of valves includes a first valve and a second valve, wherein the first valve is installed at the upper part of the settling pipe and the second valve is installed at the lower part of the settling pipe.
3. The coke oven gas pipeline tar treatment device according to claim 1, characterized in that, The settling pipe extends downward from the pipe opening.
4. The coke oven gas pipeline tar treatment device according to claim 1, characterized in that, The plurality of valves also include a third valve and a fourth valve, the third valve being installed in the purge pipe and the fourth valve being installed in the vent pipe.
5. A coke oven gas pipeline tar treatment device according to claim 1, characterized in that, The valve is configured as a shut-off valve.
6. A coke oven gas pipeline tar treatment device according to claim 1, characterized in that, A nozzle extends outward from the edge of one end of the settling pipe that connects to the pipe opening. The nozzle is located on one side of the settling pipe along the gas flow direction inside the coke oven gas pipeline, and the nozzle is located on the side of the settling pipe closest to the gas source of the coke oven gas pipeline.
7. A coke oven gas pipeline tar treatment device according to claim 6, characterized in that, The nozzle is wider at the top and narrower at the bottom.
8. A coke oven gas pipeline tar treatment device according to claim 1, characterized in that, The purging pipe is connected to the upper part of the settling pipe.
9. A coke oven gas pipeline tar treatment device according to claim 1, characterized in that, The vent pipe is connected to the upper part of the settling pipe.
10. A coke oven gas pipeline tar treatment device according to claim 2, characterized in that, The purging pipe is connected to the settling pipe between the vent pipe and the first valve.