An emergency relief pressure system for a dry quenching furnace

Abstract

The utility model discloses a kind of dry quenching furnace emergency dispersion pressure relief system, including pipeline circulation connection's dry quenching furnace, primary dust collector, waste heat boiler, dust collector and circulating fan, dry quenching furnace and primary dust collector upper portion are respectively equipped with furnace top dispersion valve, emergency dispersion valve, furnace top dispersion valve, emergency dispersion valve are connected with remote controller control, remote controller and circulating fan interlock control connection, the outlet of furnace top dispersion valve, emergency dispersion valve is connected with flue gas processor through smoke pipe, the utility model is started by remote controller interlock automatic control furnace top dispersion valve, emergency dispersion valve and spraying system, emergency condition can be responded rapidly, ensure that dry quenching coke oven will be flue gas rapidly dispersed under emergency condition, release furnace pressure, prevent high temperature and high pressure flue gas gathering in furnace from explosion, by the combination of spraying system and dust-settling water, the present application can effectively reduce dust emission in flue gas, to reduce the influence to environment.

Description

Technical Field

[0001] This utility model relates to the field of emergency venting in dry quenching coke ovens, specifically to an emergency venting and pressure relief system for dry quenching furnaces. Background Technology

[0002] During the coking process in a dry quenching coke oven, the high-temperature flue gas first undergoes preliminary dust removal through a primary dust collector, and then enters a waste heat boiler for heat exchange. After heat exchange, the flue gas enters another dust collector for further dust removal, and finally, a circulating fan recycles the flue gas back to the dry quenching coke oven for continued use.

[0003] However, in emergencies such as boiler tube rupture or major power outages, the circulating fans may shut down. After an emergency shutdown, the high-temperature, high-pressure flue gas generated inside the dry quenching coke oven needs to be rapidly dispersed to prevent gas accumulation and potential explosions that could damage the equipment. Traditionally, operators manually open the vent valves and emergency vent valves on the top of the dry quenching furnace and the primary dust collector. However, manual opening is slow and cannot disperse the flue gas quickly enough, affecting the safety of the dry quenching coke oven. Furthermore, the flue gas dispersed in an emergency contains a large amount of dust, and direct emission of this dust would have a serious environmental impact. Therefore, existing technologies urgently need improvement to address these issues. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an emergency venting and pressure relief system for a dry quenching furnace.

[0005] This utility model is achieved through the following technical solution:

[0006] An emergency venting and pressure relief system for a dry quenching furnace includes a dry quenching furnace, a primary dust collector, a waste heat boiler, a dust collector, and a circulating fan connected by pipelines. A furnace top venting valve and an emergency venting valve are respectively installed on the upper part of the dry quenching furnace and the primary dust collector. The furnace top venting valve and the emergency venting valve are connected to a remote controller. The remote controller is interlocked with the circulating fan. The outlets of the furnace top venting valve and the emergency venting valve are connected to a flue gas processor through a flue pipe.

[0007] Alternatively, the flue gas processor includes a treatment box for storing dust settling water, with an annular spray pipe installed at the upper part of the treatment box. The spray pipe is connected to the water supply pipe and the outlet of the circulating pump, and the inlet of the circulating pump is connected to the lower part of the treatment box.

[0008] Alternatively, the exhaust pipe connected to the outlet of the furnace top vent valve and the emergency vent valve extends into the treatment box and is located above the surface of the dust-suppressing water.

[0009] Alternatively, the upper part of the processing chamber may be provided with a number of diffusion holes in a ring shape.

[0010] Alternatively, the circulating pump can be connected to a remote controller.

[0011] Alternatively, the lower part of the spray pipe may have several spray holes.

[0012] Alternatively, the exhaust pipe may be located in the center of the annular spray pipe.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model can quickly respond to emergencies by remotely controlling the furnace top venting valve, emergency venting valve and spraying system through interlocking automatic control. It can ensure that the flue gas is quickly released in emergency situations, relieve the pressure inside the furnace, and prevent the high temperature and high pressure flue gas inside the furnace from accumulating and exploding. Through the combination of the spraying system and dust suppression water, this application can effectively reduce the dust emission in the flue gas, thereby reducing the impact on the environment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the system of this utility model;

[0015] Figure 2 yes Figure 1 Enlarged view of a local structure in the diagram;

[0016] In the diagram: 1. Dry quenching furnace; 2. Primary dust collector; 3. Waste heat boiler; 4. Dust collector; 5. Circulating fan; 6. Furnace top vent valve; 7. Emergency vent valve; 8. Remote controller; 9. Flue gas processor; 10. Processing box; 11. Exhaust pipe; 12. Spray pipe; 13. Water supply pipe; 14. Circulating pump; 15. Diffuser hole. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1 , 2 As shown, an emergency venting and pressure relief system for a dry quenching furnace includes a dry quenching furnace 1, a primary dust collector 2, a waste heat boiler 3, a dust collector 4, and a circulating fan 5, all connected by pipelines. A furnace top venting valve 6 and an emergency venting valve 7 are respectively installed on the upper part of the dry quenching furnace 1 and the primary dust collector 2. The furnace top venting valve 6 and the emergency venting valve 7 are connected to a remote controller 8 for control. The remote controller 8 is interlocked with the circulating fan 5 for control. The outlets of the furnace top venting valve 6 and the emergency venting valve 7 are connected to a flue gas processor 9 through a flue pipe 11.

[0019] The remote controller 8 enables the furnace top vent valve 6 and emergency vent valve 7 to be interlocked with the circulating fan 5, thereby automatically initiating the pressure relief procedure when the circulating fan 5 stops, improving the system's response speed. The exhaust pipe 11 is designed to guide the depressurized flue gas to the flue gas processor, ensuring effective treatment of the flue gas and reducing environmental pollution.

[0020] The flue gas processor 9 includes a treatment box 10 for storing dust settling water. An annular spray pipe 12 is installed at the upper part of the treatment box 10. The spray pipe 12 is connected to the outlet of the water supply pipe 13 and the circulation pump 14. The inlet of the circulation pump 14 is connected to the lower part of the treatment box 10.

[0021] Specifically, the treatment chamber 10 stores the dust settling water. The dust settling water is drawn from the bottom of the treatment chamber 10 by a circulating pump 14 and then sprayed into the interior of the treatment chamber through spray pipes 12. The design of the spray pipes allows the dust settling water to be sprayed evenly into the flue gas, increasing the contact area between the flue gas and water, thereby improving the dust removal effect. The introduction of the circulating pump ensures the continuous recycling of the dust settling water, further improving the system's treatment efficiency and environmental performance.

[0022] In a preferred embodiment, the spray pipe 12 can be designed as a ring structure to ensure that the dust-suppressing water can evenly cover the entire interior of the treatment chamber. Furthermore, the lower part of the spray pipe can have several spray holes to increase the spray range and uniformity of the dust-suppressing water. The inlet of the circulating pump 14 is connected to the lower part of the treatment chamber to ensure that the dust-suppressing water can be effectively extracted and reused.

[0023] The exhaust pipe 11, connected to the outlets of the furnace top vent valve 6 and the emergency vent valve 7, extends into the treatment chamber 10 and is positioned above the dust settling water surface. This ensures that the flue gas is fully mixed with the dust settling water after entering the treatment chamber 10, thereby improving dust removal efficiency, reducing dust emissions in the flue gas, and improving environmental quality. Compared with existing technologies, this technical solution has higher dust removal efficiency and better environmental protection effects.

[0024] The upper part of the treatment chamber 10 is provided with several diffusion holes 15 in a ring. By setting the diffusion holes, the problem of uneven diffusion of flue gas inside the treatment chamber 10 can be effectively solved, ensuring that the flue gas is fully treated in the treatment chamber and reducing dust emissions.

[0025] The circulating pump 14 is connected to the remote controller 8. This connection ensures that the operating status of the circulating pump 14 is fed back to the remote controller 8 in real time during the circulation of dust-suppressed water within the treatment chamber, thereby achieving precise control of the circulating pump 14. Through the adjustment of the remote controller, the circulating pump can be started or stopped as needed, ensuring effective circulation of the dust-suppressed water and thus improving the efficiency and safety of flue gas treatment.

[0026] The lower part of the spray pipe 12 has several spray holes. The exhaust pipe 11 is located in the center of the annular spray pipe 12. After the flue gas enters the treatment box 10 from the exhaust pipe 11, since the exhaust pipe 11 is located in the center of the spray pipe 12, the flue gas can be evenly distributed around the spray pipe. The spray water is evenly sprayed onto the flue gas through the spray holes, which increases the contact area between the flue gas and the water, thereby improving the dust removal efficiency.

[0027] The implementation principle of an emergency venting and depressurization system for a dry quenching furnace according to an embodiment of this application is as follows:

[0028] When a boiler tube ruptures inside the waste heat boiler 3 or an emergency such as a major power outage occurs, the circulating fan 5 will shut down immediately. The shutdown signal of the circulating fan 5 will be transmitted to the remote controller 8. The remote controller 8 will control the interlocking to start the furnace top vent valve 6 and the emergency vent valve 7 to release the pressure inside the furnace and prevent the high-temperature and high-pressure flue gas inside the furnace from accumulating and exploding, thus burning the equipment. This avoids the delay of manual operation. At the same time, the remote controller 8 will also synchronously control the circulation pump 14 of the flue gas processor 9 to start.

[0029] High-temperature, high-pressure flue gas rapidly enters the processing chamber 10 through the furnace top vent valve 6, emergency vent valve 7, and exhaust pipe 11. Since the exhaust pipe 11 is located above the dust-suppressing water surface, the flue gas comes into contact with the dust-suppressing water upon entering the processing chamber. The water mist captures dust in the flue gas, thereby reducing dust emissions. The dust-suppressed flue gas is then discharged through the diffuser 15. The exhaust pipe 11 is located in the center of the annular spray pipe 12, which sprays water mist downwards, further enhancing the dust capture effect. Compared with existing technologies, this solution can quickly and effectively release high-temperature, high-pressure flue gas in emergency situations while reducing environmental pollution.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An emergency venting and pressure relief system for a dry quenching furnace, comprising a dry quenching furnace (1), a primary dust collector (2), a waste heat boiler (3), a dust collector (4), and a circulating fan (5) connected by pipelines, characterized in that: The upper part of the dry quenching furnace (1) and the primary dust collector (2) are respectively equipped with a furnace top vent valve (6) and an emergency vent valve (7). The furnace top vent valve (6) and the emergency vent valve (7) are connected to a remote controller (8). The remote controller (8) is interlocked with the circulating fan (5). The outlets of the furnace top vent valve (6) and the emergency vent valve (7) are connected to the flue gas processor (9) through the exhaust pipe (11). The flue gas processor (9) includes a treatment box (10) for storing dust settling water. An annular spray pipe (12) is installed at the upper end of the treatment box (10). The spray pipe (12) is connected to the outlet of a water supply pipe (13) and a circulating pump (14). The inlet of the circulating pump (14) is connected to the lower part of the treatment box (10).

2. The emergency venting and depressurization system for a dry quenching furnace according to claim 1, characterized in that: The exhaust pipe (11) connected to the outlet of the furnace top vent valve (6) and the emergency vent valve (7) extends into the treatment box (10) and is located above the dust-falling water surface.

3. The emergency venting and depressurization system for a dry quenching furnace according to claim 2, characterized in that: The upper part of the processing box (10) is provided with a number of diffusion holes (15).

4. The emergency venting and depressurization system for a dry quenching furnace according to claim 1, characterized in that: The circulating pump (14) is connected to the remote controller (8) for control.

5. The emergency venting and depressurization system for a dry quenching furnace according to claim 1, characterized in that: The lower part of the spray pipe (12) has several spray holes.

6. The emergency venting and depressurization system for a dry quenching furnace according to claim 2, characterized in that: The exhaust pipe (11) is located in the center of the annular spray pipe (12).

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