Waste gas filtering device for RTO equipment

Abstract

The utility model belongs to the technical field of coal, and particularly relates to a waste gas filtering device for RTO (Regenerative Thermal Oxidation) equipment, which comprises a body, a gas conveying pipe and a gas distributing pipe, the gas conveying pipe is respectively connected with the two purification chambers through two gas distribution pipes; and an electromagnetic valve is arranged on the gas distributing pipe. The flow direction of waste gas in the gas conveying pipe can be controlled through the gas distributing pipe arranged on the gas conveying pipe and the electromagnetic valve installed on the gas distributing pipe, the inner cavity of the body is divided into the two purification chambers through the partition plate arranged in the body to filter the waste gas, and the waste gas can be purified through the differential pressure gauge arranged on the water purification pipe. The flow velocity of filtered water can be detected, so that a worker can replace the filtering layer for filtering a large amount of dust in time. The filter layer can be replaced without suspending the combustion tank to combust and decompose the waste gas, so that the waste gas treatment RTO equipment can continuously combust and decompose the waste gas, and the use effect is prevented from being reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal production, in particular to an exhaust gas filtering device for RTO equipment. Background Art

[0002] Coking plant is an important link in coal chemical processing. A large amount of waste gas will be generated in the production process of the coking plant, including toxic and harmful gases, which will have serious impacts on the environment and human health. Therefore, RTO equipment is needed to treat the waste gas. RTO is a high-efficiency organic waste gas treatment equipment. Compared with traditional catalytic combustion and direct-fired thermal oxidation furnaces, it has the characteristics of high thermal efficiency, low operating cost, and the ability to treat large air volume and low-concentration waste gas.

[0003] Existing RTO waste gas treatment equipment generally includes a decomposition tank for oxidative decomposition of waste gas and a scrubber tank for cleaning the decomposed gas. Existing RTO waste gas treatment equipment can continuously burn and decompose waste gas by setting up multiple decomposition tanks, thereby improving the decomposition efficiency. However, after filtering a large amount of dust, the filter screen and scrubber filler in the scrubber tank will reduce the filtration efficiency and scrubbing effect. In order to replace the filter screen and scrubber filler, it is still necessary to suspend the decomposition tank from burning and decomposing the waste gas, resulting in the inability of the waste gas treatment RTO equipment to continuously treat the waste gas, reducing the use effect of the waste gas treatment RTO equipment. Therefore, a new type of waste gas treatment RTO equipment is urgently needed to solve these problems. Summary of the invention

[0004] The utility model aims at the deficiencies of the prior art and provides an exhaust gas filtering device for RTO equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An exhaust gas filtering device for RTO equipment comprises a main body, an air delivery pipe and an air distribution pipe. The main body comprises two independent purification chambers; the air delivery pipe is respectively connected to the two purification chambers through two air distribution pipes; and an electromagnetic valve is arranged on the air distribution pipe.

[0007] Preferably, a partition plate is vertically arranged in the center of the inner cavity of the main body, dividing the inner cavity of the main body vertically into two purification chambers, and the upper ends of the two purification chambers are respectively connected to the two gas distribution pipes.

[0008] Preferably, two water inlet pipes are installed at the upper end of the side wall of the body, which are connected to the two purification chambers respectively. A plurality of water spray heads are arranged on the water inlet pipes, and the water spray heads spray water evenly into the purification chambers to wash the exhaust gas.

[0009] Preferably, the air inlet of the air distribution pipe is arranged at the top of the main body.

[0010] Preferably, each purification chamber is provided with a filter layer, which is composed of multiple layers of filter screens and is mainly used to filter out dust in the water after washing the exhaust gas. At the same time, it can increase the contact time between the exhaust gas and the washing water, which is beneficial to the cooling of the exhaust gas.

[0011] Preferably, a fixed plate is installed below the filter layer, a clean water pipe is connected to the fixed plate, and a differential pressure gauge is installed on the clean water pipe. The clean water pipe runs through the fixed plate from top to bottom. The water filtered from the filter layer flows to the fixed plate, and then the filtered water is collected through the clean water pipe. The filtered water absorbs the heat of the exhaust gas, and after dust removal, it can be used as a heat medium to provide a heat source for other processes, or recycled for washing.

[0012] Preferably, two drain pipes are installed at the lower end of the side wall of the main body, which are respectively connected to the two clean water pipes, and the drain pipes are used to discharge or utilize the filtered water.

[0013] Preferably, two exhaust pipes are arranged above the drain pipe, which are connected to the two purification chambers respectively, and the exhaust pipes are used to discharge the purified gas. The exhaust pipes are arranged between the filter layer and the fixed plate.

[0014] Preferably, the body and the partition plate are welded.

[0015] The gas supply pipe and the main body are both threadedly connected to the gas distribution pipe, the gas distribution pipe is bolted to the solenoid valve, the main body is threadedly connected to the water inlet pipe, the water inlet pipe is threadedly connected to the sprinkler head, the drain pipe and the exhaust pipe are both threadedly connected to the main body, the main body is welded to the partition plate, the partition plate is made of stainless steel, the main body and the partition plate are both bolted to the filter layer, the main body and the partition plate are both welded to the fixed plate, the fixed plate is made of stainless steel, the fixed plate is threadedly connected to the clean water pipe, the clean water pipe is made of PVC, the differential pressure gauge is bolted to the clean water pipe, the fixed plate can be more firmly fixed on the partition plate and the main body, the fixed plate can better fix the clean water pipe, the clean water pipe is used to drain the filtered water to the bottom of the main body, and the differential pressure gauge is used to detect the flow rate in the clean water pipe to remind the staff to replace the filter layer in time.

[0016] Beneficial effects of the utility model:

[0017] Compared with the prior art, the present invention has at least the following beneficial effects or advantages:

[0018] 1. The waste gas filtering device provided by the utility model can wash the waste gas generated by the RTO decomposition device, and further filter and cool the washing water, so as to facilitate the recovery of clean gas and washing water.

[0019] 2. In order to solve the problem that during the use of the existing RTO waste gas treatment equipment, the filter layer of the waste gas filter device will reduce the filtration efficiency of the waste water after filtering a large amount of dust. When the staff replaces the filter screen and the gas washing filler, it is necessary to suspend the decomposition tank to burn and decompose the waste gas, resulting in the inability of the waste gas treatment RTO equipment to continuously treat the waste gas, which reduces the use effect of the waste gas treatment RTO equipment. The utility model uses a gas distribution pipe arranged on the gas pipeline, and the solenoid valve installed on the gas distribution pipe can control the flow direction of the waste gas in the gas pipeline. Through the partition plate arranged in the filter tank, it is convenient to divide the filter tank into two chambers to filter the waste gas. Through the differential pressure gauge arranged on the water purification pipe, the flow rate of the filtered water can be detected, which is convenient for the staff to replace the filter layer that filters a large amount of dust in time. The solenoid valve closes the gas distribution pipe above the filter layer that needs to be replaced to avoid leakage of unfiltered waste gas. At this time, the solenoid valve above the filter layer of the other chamber is opened to filter the waste gas, and the filter layer can be replaced without suspending the combustion tank to burn and decompose the waste gas, so that the waste gas treatment RTO equipment can continuously burn and decompose the waste gas to avoid reducing its use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the exhaust gas filtering device for RTO exhaust gas treatment equipment described in the utility model;

[0021] Figure 2 It is a main cross-sectional view of the exhaust gas filtering device for RTO exhaust gas treatment equipment described in the utility model.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Main body; 2. Gas transmission pipe; 3. Gas distribution pipe; 4. Solenoid valve; 5. Partition plate; 6. Water inlet pipe; 7. Sprinkler head; 8. Drain pipe; 9. Exhaust pipe; 10. First purification chamber; 11. Second purification chamber; 12. Filter layer; 13. Fixed plate; 14. Clean water pipe; 15. Differential pressure gauge. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 , Figure 2As shown, the present embodiment provides an exhaust gas filtering device for RTO exhaust gas treatment equipment, including a main body 1, an air supply pipe 2, and an air distribution pipe 3. The inner cavity of the main body 1 includes two independent purification chambers, a first purification chamber 10 and a second purification chamber 11. The air supply pipe 2 is respectively connected to the two purification chambers through two air distribution pipes 3. The air supply pipe 2 is used to transport the exhaust gas after oxidation and decomposition into the purification chamber; the air distribution pipe 3 is provided with an electromagnetic valve 4 for controlling the opening and closing of the air distribution pipe 3, thereby controlling the flow direction and flow rate of the exhaust gas.

[0026] A partition plate 5 is vertically arranged in the center of the inner cavity of the main body 1 to vertically divide the inner cavity of the main body 1 into two purification chambers. The upper ends of the two purification chambers are respectively connected to the two gas distribution pipes 3.

[0027] Two water inlet pipes 6 are installed at the upper end of the side wall of the body 1, which are connected to the two purification chambers respectively. A plurality of water spray heads 7 are arranged on the water inlet pipes 6, and the water spray heads 7 spray water evenly into the purification chamber to wash the exhaust gas.

[0028] The air inlet of the air distribution pipe 3 is arranged at the top of the main body 1 .

[0029] Each purification chamber is provided with a filter layer 12, which is composed of multiple layers of filter screens and is mainly used to filter out dust in the water after washing the exhaust gas. At the same time, it can increase the contact time between the exhaust gas and the washing water, which is beneficial to the cooling of the exhaust gas. A fixed plate 13 is installed below the filter layer 12, and a clean water pipe 14 is connected to the fixed plate 13, and a differential pressure gauge 15 is installed on the clean water pipe 14. The clean water pipe 14 runs through the fixed plate 13 from top to bottom. The water filtered from the filter layer 12 flows to the fixed plate 13, and then the filtered water is collected through the clean water pipe 14. The filtered water absorbs the heat of the exhaust gas, and after dust removal, it can be used as a heat medium to provide a heat source for other processes, or recycled for washing.

[0030] Two drain pipes 8 are installed at the lower end of the side wall of the body 1, which are respectively connected to the two clean water pipes 14. The drain pipes 8 are used to discharge or utilize the filtered water; two exhaust pipes 9 are arranged above the drain pipes 8, which are respectively connected to the two purification chambers. The exhaust pipes 9 are used to discharge the purified gas. The exhaust pipes 9 are arranged between the filter layer 12 and the fixed plate 13.

[0031] The gas supply pipe 2 and the main body 1 are both threadedly connected to the gas distribution pipe 3, the gas distribution pipe 3 is bolted to the solenoid valve 4, the main body 1 is threadedly connected to the water inlet pipe 6, the water inlet pipe 6 is threadedly connected to the sprinkler head 7, the drain pipe 8 and the exhaust pipe 9 are both threadedly connected to the main body 1, the main body 1 is welded to the partition plate 5, the partition plate 5 is made of stainless steel, the main body 1 and the partition plate 5 are both bolted to the filter layer 12, the main body 1 and the partition plate 5 are both welded to the fixing plate 13, the fixing plate 13 is made of stainless steel, the fixing plate 13 is threadedly connected to the clean water pipe 14, the clean water pipe 14 is made of PVC, the differential pressure gauge 15 is bolted to the clean water pipe 14, the fixing plate 13 can be more firmly fixed on the partition plate 5 and the main body 1, the fixing plate 13 can better fix the clean water pipe 14, the clean water pipe 14 is used to drain the filtered water to the bottom of the main body 1, and the differential pressure gauge 15 is used to detect the flow rate in the clean water pipe 14 to remind the staff to replace the filter layer 12 in time.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exhaust gas filtration device for RTO equipment, characterized in that: It comprises a main body (1), an air supply pipe (2), and an air distribution pipe (3); the main body (1) comprises two independent purification chambers (10, 11); the air supply pipe (2) is connected to the two purification chambers (10, 11) respectively through the two air distribution pipes (3); and the air distribution pipe (3) is provided with an electromagnetic valve (4).

2. The exhaust gas filtering device according to claim 1, characterized in that: A partition plate (5) is vertically arranged at the center of the inner cavity of the body (1), vertically dividing the inner cavity of the body (1) into two purification chambers (10, 11), and the upper ends of the two purification chambers are respectively connected to the two gas distribution pipes (3).

3. The exhaust gas filtering device according to claim 1, characterized in that: Two water inlet pipes (6) are installed at the upper end of the side wall of the body (1), and are respectively connected to the two purification chambers (10, 11).

4. The exhaust gas filtering device according to claim 3, characterized in that: A plurality of water spray heads (7) are arranged on the water inlet pipe (6).

5. The exhaust gas filtering device according to claim 1, characterized in that: The air inlet of the air distribution pipe (3) is arranged at the top of the main body (1).

6. The exhaust gas filtering device according to claim 1, characterized in that: A filter layer (12) is provided in each purification chamber (10, 11).

7. The exhaust gas filtering device according to claim 6, characterized in that: A fixing plate (13) is installed below the filter layer (12), and a water purification pipe (14) is arranged on the fixing plate (13) and penetrates the fixing plate (13).

8. The exhaust gas filtering device according to claim 7, characterized in that: A differential pressure gauge (15) is installed on the clean water pipe (14).

9. The exhaust gas filtering device according to claim 1, characterized in that: Two drainage pipes (8) are installed at the lower end of the side wall of the body (1), and are respectively connected to the two clean water pipes (14).

10. The exhaust gas filtering device according to claim 9, characterized in that: Two exhaust pipes (9) are arranged above the drainage pipe (8) and are respectively connected to the two purification chambers (10, 11).

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