Gas ignition co-combustion device

Abstract

The utility model discloses a coal gas ignition combustion-accompanying device which structurally comprises a coal gas inlet pipe, a combustion pipe and an ignition device, the combustion pipe is arranged above the coal gas inlet pipe, the ignition device is fixedly arranged on the inner side of the combustion pipe, and the coal gas ignition combustion-accompanying device further comprises a rainproof mechanism used for blocking rainwater; the oxygen supply mechanism is used for supplying oxygen to gas combustion; the rainproof mechanism is arranged on the outer side of the coal gas inlet pipe and the outer side of the combustion pipe, and the oxygen supply mechanism is arranged on the outer side of the combustion pipe. The rainproof mechanism comprises an upper blocking cover, a lower skirt edge and an upper connecting frame, the lower skirt edge is fixedly arranged on the lower portion of the combustion pipe, and the lower skirt edge is of a conical skirt edge structure. The utility model belongs to the field of gas ignition devices, and particularly relates to a gas ignition co-combustion device.

Description

Technical Field

[0001] The utility model belongs to the field of gas ignition devices, in particular to a gas ignition and combustion device. Background Art

[0002] The blast furnace gas discharge tower is used to discharge the waste generated during the steelmaking process into the atmosphere. Blast furnace gas includes toxic gases such as carbon monoxide. In order to reduce air pollution and prevent the poisoning of residents by toxic gases, it is usually necessary to burn the blast furnace gas before releasing it. Since the carbon dioxide and nitrogen in the blast furnace gas neither participate in the combustion to generate heat nor support combustion, on the contrary, they also absorb a large amount of heat generated during the combustion process, resulting in a low theoretical combustion temperature of the blast furnace gas. Therefore, the combustion of blast furnace gas requires the use of coke oven gas as a co-burning gas for ignition.

[0003] The existing gas ignition and combustion device can guide and assist the combustion of blast furnace gas, but its oxygen supply method is relatively single and cannot ensure the full combustion of blast furnace gas. It is easy to produce harmful gases to pollute the atmosphere. In rainy and snowy weather, rain and snow are easy to fall into the gas ignition and combustion device from the combustion pipe and the gas supply pipe, affecting the combustion temperature and combustion effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the oxygen supply path is single and the combustion effect is affected in rainy and snowy days.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is as follows: the gas ignition and combustion device proposed in the utility model includes a gas inlet pipe, a combustion pipe and an ignition device, the combustion pipe is arranged above the gas inlet pipe, the ignition device is fixed to the inner side of the combustion pipe, and also includes: a rainproof mechanism for blocking rainwater; an oxygen supply mechanism for supplying oxygen to gas combustion; the rainproof mechanism is arranged on the outside of the gas inlet pipe and the combustion pipe, and the oxygen supply mechanism is arranged on the outside of the combustion pipe.

[0006] Furthermore, the rainproof mechanism includes an upper baffle, a lower skirt and an upper connecting frame. The lower part of the combustion tube is fixedly provided with a lower skirt, and the lower skirt is set as a conical skirt structure.

[0007] Furthermore, the oxygen supply mechanism includes a lower connecting frame, one end of the lower connecting frame is fixedly connected to the lower inner side of the lower skirt, the other end of the lower connecting frame is fixedly connected to the outer side of the gas inlet pipe, and an air inlet is opened between adjacent lower connecting frames.

[0008] Furthermore, a plurality of auxiliary air inlet holes are provided at the lower portion of the side of the combustion tube, and the auxiliary air inlet holes are arranged at a position obliquely below and close to the ignition device.

[0009] Furthermore, an upper skirt is fixedly provided on the outer side of the combustion tube, and the upper skirt is configured as a conical skirt-shaped structure, and the upper skirt is arranged above the auxiliary air intake hole.

[0010] Furthermore, the upper end of the combustion tube is configured as a conical tubular structure, the lower end of the upper connecting frame is fixedly connected to the upper end of the combustion tube, and the upper end of the upper connecting frame is fixedly connected to the lower part of the upper baffle cover.

[0011] The beneficial effects achieved by the utility model using the above structure are as follows:

[0012] 1. The gas ignition and combustion device proposed in this scheme can supply oxygen from the bottom while the gas is burning by setting an air inlet at the connection between the combustion tube and the gas inlet pipe. An auxiliary air inlet hole is opened on the side wall of the combustion tube near the ignition device to allow air to be closer to the flame, ensuring sufficient combustion and avoiding the generation and discharge of harmful substances.

[0013] 2. The gas ignition and combustion device proposed in this scheme can effectively block rainwater by arranging a lower skirt on the outside of the air inlet, an upper baffle on the upper part of the combustion tube, and an upper skirt on the outside of the auxiliary air inlet hole, so as to prevent rainwater from falling into the combustion tube and affecting the combustion temperature and combustion effect, thereby ensuring the full combustion of the gas and avoiding the production of harmful substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a first overall structural schematic diagram of the utility model;

[0015] Figure 2 It is a second overall structural schematic diagram of the utility model;

[0016] Figure 3 It is an overall cross-sectional schematic diagram of the utility model.

[0017] Among them, 1. gas inlet pipe, 2. combustion tube, 3. rain protection mechanism, 301. upper baffle, 302. upper skirt, 303. lower skirt, 304. upper connecting frame, 4. oxygen supply mechanism, 401. lower connecting frame, 402. air inlet, 403. auxiliary air inlet hole, 5. ignition device.

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, the gas ignition and co-combustion device proposed in the utility model includes a gas inlet pipe 1, a combustion pipe 2 and an ignition device 5. The combustion pipe 2 is arranged above the gas inlet pipe 1, and the ignition device 5 is fixed to the inner side of the combustion pipe 2. It also includes: a rainproof mechanism 3 for blocking rainwater; an oxygen supply mechanism 4 for supplying oxygen to gas combustion; the rainproof mechanism 3 is arranged on the outside of the gas inlet pipe 1 and the combustion pipe 2, and the oxygen supply mechanism 4 is arranged on the outside of the combustion pipe 2. The rainproof mechanism 3 includes an upper baffle 301, a lower skirt 303 and an upper connecting frame 304. The lower part of the combustion pipe 2 is fixed with a lower skirt 303, and the lower skirt 303 is set as a conical skirt structure.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the oxygen supply mechanism 4 includes a lower connecting frame 401, one end of the lower connecting frame 401 is fixedly connected to the lower inner side of the lower skirt 303, and the other end of the lower connecting frame 401 is fixedly connected to the outer side of the gas inlet pipe 1. An air inlet 402 is provided between adjacent lower connecting frames 401 for mainly supplying oxygen to the gas combustion. A plurality of groups of auxiliary air inlet holes 403 are provided at the lower side of the combustion tube 2, and the auxiliary air inlet holes 403 are provided at a position obliquely below the ignition device 5 for providing auxiliary oxygen to the gas combustion. An upper skirt 302 is fixedly provided on the outer side of the combustion tube 2, and the upper skirt 302 is set to a conical skirt structure. The upper skirt 302 is arranged above the auxiliary air inlet hole 403 to shield the auxiliary air inlet hole 403 from rain, so as to prevent rainwater from falling into or blocking the auxiliary air inlet hole 403 and affecting the oxygen supply. The upper end of the combustion tube 2 is set to a conical tubular structure, and the lower end of the upper connecting frame 304 is fixedly connected to the upper end of the combustion tube 2, and the upper end of the upper connecting frame 304 is fixedly connected to the lower part of the upper baffle 301 to prevent rainwater from falling into the combustion tube 2.

[0022] During specific use, the blast furnace gas is discharged through the gas inlet pipe 1, and the ignition device 5 is used to ignite the gas. At this time, the air inlet 402 opened at the connection between the lower skirt 303 and the gas inlet pipe 1 plays a major role in supplying oxygen. The combustion tube 2 is provided with an auxiliary air inlet hole 403 at a position close to the ignition device 5, so that the air can be in closer contact with the flame, and oxygen can be supplied in time when oxygen is insufficient during combustion, so that the gas can burn more fully. An upper baffle 301 is fixedly provided on the upper part of the combustion tube 2 through an upper connecting frame 304, which can prevent rainwater from directly falling into the combustion tube 2. An upper skirt 302 is fixedly provided on the outer side of the auxiliary air inlet hole 403, which can prevent rainwater from sliding along the tube wall of the combustion tube 2 and flowing into the auxiliary air inlet hole 403 to affect the oxygen supply effect. A lower skirt 303 is provided on the outer side of the air inlet 402, which can prevent the air inlet 402 from being blocked on rainy days and affecting the oxygen supply effect of the air inlet 402, thereby ensuring sufficient combustion and preventing the discharge of harmful substances.

[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A gas ignition and combustion device, comprising a gas inlet pipe, a combustion pipe and an ignition device, wherein the combustion pipe is arranged above the gas inlet pipe, and the ignition device is fixed to the inner side of the combustion pipe, characterized in that: Also includes: A rain protection mechanism for blocking rainwater; An oxygen supply mechanism for supplying oxygen to gas combustion; The rainproof mechanism is arranged on the outside of the gas inlet pipe and the combustion pipe, and the oxygen supply mechanism is arranged on the outside of the combustion pipe.

2. The gas ignition and combustion device according to claim 1, characterized in that: The rainproof mechanism comprises an upper baffle, a lower skirt and an upper connecting frame. The lower part of the combustion tube is fixedly provided with a lower skirt, and the lower skirt is set as a conical skirt structure.

3. The gas ignition and combustion device according to claim 2, characterized in that: The oxygen supply mechanism comprises a lower connecting frame, one end of which is fixedly connected to the lower inner side of the lower skirt, and the other end of which is fixedly connected to the outer side of the gas inlet pipe, and an air inlet is provided between adjacent lower connecting frames.

4. The gas ignition and combustion device according to claim 3, characterized in that: A plurality of auxiliary air inlet holes are provided at the lower part of the side of the combustion tube, and the auxiliary air inlet holes are arranged at a position obliquely below and close to the ignition device.

5. The gas ignition and combustion device according to claim 4, characterized in that: An upper skirt is fixedly arranged on the outer side of the combustion tube. The upper skirt is arranged in a conical skirt-shaped structure. The upper skirt is arranged above the auxiliary air inlet hole.

6. The gas ignition and combustion device according to claim 5, characterized in that: The upper end of the combustion tube is set as a conical tubular structure, the lower end of the upper connecting frame is fixedly connected to the upper end of the combustion tube, and the upper end of the upper connecting frame is fixedly connected to the lower part of the upper blocking cover.

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