Converter dry dedusting chimney ignition device capable of preventing gas pipe from being blocked

Abstract

The utility model relates to a converter dry dedusting chimney ignition device capable of preventing a gas pipe from being blocked, which comprises a circle of annular pipe, the annular pipe surrounds a diffusion chimney and is obliquely arranged, the lowest point of the annular pipe is provided with a gas inlet, the annular pipe is provided with at least one burning accompanying pipe, and the burning accompanying pipe is used for igniting diffusion gas of the diffusion chimney; the gas inlet is connected with a gas pipeline, the gas pipeline extends downwards and is provided with two branch pipes, one branch pipe serves as a blow-off pipe A, the other branch pipe is connected with a gas bag, and the gas bag is provided with a coke oven gas inlet; according to the utility model, the probability that the annular pipeline is blocked is reduced, or the annular pipeline can be quickly and conveniently cleaned even if being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of converter dry dust removal chimney ignition devices, in particular to a converter dry dust removal chimney ignition device for preventing gas pipe blockage. Background Art

[0002] In the converter dry dust removal system, before and after gas recovery, unqualified gas is released into the atmosphere through the venting chimney after burning. The principle of the venting chimney ignition device is: when steelmaking starts, the oxygen gun is inserted, and the oxygen quick-break valve is opened, the signal is sent to the PLC system of the venting ignition device, the ignition gas valve is opened, the ignition device is ignited, and the flame detection device detects whether there is fire. If the ignition is successful, the ignition gas is converted to co-burning; for safety reasons, the co-burning must be continuously ignited. The energy medium of the co-burning device is coke oven gas. Because coke oven gas contains impurities such as tar, dust, and water vapor, it is easy to deposit and clog at the end annular pipe with a low flow rate. In severe cases, the mixing combustion device fails due to pipeline blockage without coke oven gas, causing part of the carbon monoxide to be discharged into the atmosphere, causing environmental pollution. Summary of the invention

[0003] The purpose of the utility model is to solve the problems existing in the prior art and to provide a converter dry dust removal chimney ignition device which can prevent the gas pipe from being blocked.

[0004] The specific scheme of the utility model is: a converter dry dust removal chimney ignition device for preventing gas pipe blockage, comprising a circle of annular pipes, the annular pipes surround the emission chimney and are arranged obliquely, a gas inlet is provided at the lowest point of the annular pipe, at least one accompanying burning pipe is provided on the annular pipe, and the accompanying burning pipe is used to ignite the emitted gas of the emission chimney; the gas inlet is connected to a gas pipeline, the gas pipeline extends downward and is provided with two branch pipes, one of which is used as a sewage pipe A, and the other branch pipe is connected to an air bag, and the air bag is provided with a coke oven gas inlet.

[0005] Furthermore, a sewage pipe B is provided at the bottom of the air bag, and a valve is installed on the sewage pipe B.

[0006] Furthermore, a purge pipe is provided at the top of the annular tube, and a valve is installed on the purge pipe.

[0007] Furthermore, the annular tube is formed by connecting a plurality of arc-shaped tube sections, and two adjacent arc-shaped tube sections are connected by flanges.

[0008] Furthermore, the inclination angle of the annular tube is β, and the range of β is 15°-30°.

[0009] The utility model has the following beneficial effects: the probability of the annular pipeline being blocked is reduced, or even if blocked, it can be cleaned quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the front view of the utility model;

[0011] Figure 2 It is a structural schematic diagram of the annular tube of the utility model;

[0012] In the figure: 1. Co-firing pipe; 2. Annular pipe; 3. Purge pipe; 4. Venting chimney; 5. Gas pipeline; 6. Drain pipe A; 7. Branch pipe; 8. Air bag; 9. Flange. DETAILED DESCRIPTION

[0013] See also Figure 1-2 The present embodiment is a converter dry dust removal chimney ignition device for preventing gas pipe blockage, comprising a circle of annular tubes 2, the annular tubes 2 surrounding the emission chimney 4 and inclined at 30 degrees, a gas inlet being provided at the lowest point of the annular tube 2, at least one co-firing tube 1 being provided on the annular tube 2, the co-firing tube 1 being used to ignite the emission gas of the emission chimney 4; the gas inlet being connected to a gas pipeline 5, the gas pipeline 5 extending downward and being provided with two branch pipes 7, one of which being a sewage pipe A6, and the other being connected to an air bag 8, the air bag 8 being provided with a coke oven gas inlet; a sewage pipe B being provided at the bottom of the air bag 8, and a valve being installed on the sewage pipe B.

[0014] By tilting the annular pipe 2 at 30°, the moisture and coal tar in the coke oven gas can automatically flow to the lowest point by gravity, and then be discharged to the sewage pipe A6 through the vertical gas pipeline 5, and the sewage valve can be opened regularly to discharge it.

[0015] By adding the air bag 8, the coke oven gas can be allowed to stand in the air bag 8 for a period of time. Impurities with slightly larger mass can be deposited in the air bag 8, and the relatively clean gas enters the annular pipe 2 for use. The sediment deposited in the air bag 8 is regularly discharged through the sewage pipe B.

[0016] Furthermore, a purge pipe 3 is provided at the top of the annular tube 2, and a valve is installed on the purge pipe 3; by providing the purge pipe 3, it is convenient to introduce nitrogen or steam above 0.5 MPa to clean the sediment in the tube during maintenance, and then discharge it outside through the sewage pipe A6.

[0017] Furthermore, the annular tube 2 is formed by connecting 6 arc tubes, and two adjacent arc tubes are connected by flanges 9. Figure 2 As shown; when it is necessary to clean the debris in the annular pipe 2, remove 1-2 sections of the arc pipe and the corresponding flange 9 to facilitate the cleaning of the debris in the annular pipe 2. The sludge-like impurities automatically flow into the drain pipe by gravity, greatly reducing the probability of blockage of the annular pipe 2.

Claims

1. A converter dry dust removal chimney ignition device for preventing gas pipe blockage, characterized by: It comprises a circle of annular pipes, which surround the discharge chimney and are arranged obliquely, a gas inlet is arranged at the lowest point of the annular pipe, and at least one accompanying burning pipe is arranged on the annular pipe, which is used to ignite the discharged gas from the discharge chimney; the gas inlet is connected to a gas pipeline, which extends downward and is provided with two branch pipes, one of which is used as a sewage pipe A, and the other branch pipe is connected to an air bag, which is provided with a coke oven gas inlet.

2. The converter dry dust removal chimney ignition device for preventing gas pipe blockage according to claim 1 is characterized in that: A sewage discharge pipe B is provided at the bottom of the air bag, and a valve is installed on the sewage discharge pipe B.

3. The converter dry dust removal chimney ignition device for preventing gas pipe blockage according to claim 1 is characterized in that: The top of the annular tube is provided with a purge pipe, and a valve is arranged on the purge pipe.

4. The converter dry dust removal chimney ignition device for preventing gas pipe blockage according to any one of claims 1 to 3, characterized in that: The annular pipe is formed by connecting a plurality of arc-shaped pipe sections, and two adjacent arc-shaped pipe sections are connected by flanges.

5. The converter dry dust removal chimney ignition device for preventing gas pipe blockage according to claim 1 is characterized in that: The inclination angle of the annular tube is β, and the range of β is 15°-30°.

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