CN216307815U - Tail gas treatment device - Google Patents

Abstract

The utility model discloses a tail gas treatment device, which comprises a combustion preheating box and an ignition rod, wherein the combustion preheating box is provided with a heating cavity for heating tail gas, the combustion preheating box is provided with an air inlet and an air outlet which are communicated with the heating cavity, and the ignition rod is positioned outside the air outlet and is opposite to the air outlet; a combustion cylinder is arranged in the heating cavity, the combustion cylinder is arranged at intervals with the side wall of the heating cavity, an opening communicated with the heating cavity is formed in the combustion cylinder, a flow guide pipe is fixedly arranged in the heating cavity, one end of the flow guide pipe is communicated with the air outlet, the other end of the flow guide pipe is arranged in the combustion cylinder and is arranged at intervals with the inner wall and the bottom plate of the combustion cylinder, and a channel for gas circulation is formed; and the burning end of the burning rod passes through the gas outlet and enters the flow guide pipe. The utility model can better make the tail gas fully combusted, and the dust removal is simple and efficient.

Description

A tail gas treatment device

technical field

The utility model relates to the technical field of degreasing catalysis, in particular to a tail gas treatment device.

Background technique

Oxalic acid is often used as a catalyst in the catalytic degreasing process. Oxalic acid begins to sublime at 100°C-125°C under normal pressure, and oxalic acid exists in a gaseous state. At the same time, a small amount of oxalic acid is thermally decomposed during the catalytic degreasing process to produce nitrogen oxides. Therefore, , the tail gas generated by the catalytic degreasing process includes harmful substances such as oxalic acid, formaldehyde, nitrogen oxides, etc., which need to be processed (such as high-temperature combustion) before being discharged. However, there are often some problems in the existing technology. On the one hand: there is combustion Insufficient phenomenon, so that formaldehyde and other gases are discharged without being fully burned, the smell is pungent, and it will cause harm to workers' bodies; on the other hand, during the degreasing process, there will be a little carbonized dust that flows out and enters the exhaust gas treatment device. Internal, difficult to clean, and equipment is easily damaged.

Utility model content

Aiming at the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is: how to provide a tail gas treatment device that can better fully burn the tail gas and is simple and efficient for dust removal.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

An exhaust gas treatment device includes a combustion preheating box and an ignition rod, the combustion preheating box has a heating cavity for heating exhaust gas, and the combustion preheating box is provided with an air inlet and an outlet communicating with the heating cavity. a gas port, the ignition rod is located outside the gas outlet and is arranged facing the gas outlet; the heating chamber is provided with a combustion cylinder, the combustion cylinder and the side wall of the heating chamber are arranged at intervals, and the combustion cylinder is connected to the heating chamber. The opening of the heating chamber is fixed with a guide pipe, one end of the guide pipe is connected with the air outlet, and the other end is set in the combustion cylinder, and the guide pipe is connected to the combustion cylinder. The inner wall and the bottom plate are arranged at intervals to form a channel for gas circulation; a combustion rod, the combustion end of the combustion rod enters the guide pipe through the gas outlet.

In this way, by arranging the combustion rod in the guide tube, the burning time is prolonged, and the external ignition rod is added, so that the formaldehyde in the exhaust gas is fully burned, and the discharge of polyoxymethylene is reduced, thereby reducing the damage to the human body and reducing the Environmental pollution; the channel formed between the guide pipe, the combustion tube and the combustion preheating box enables the exhaust gas to be fully preheated, which is convenient for the combustion rod and the ignition rod to burn the exhaust gas.

Further, it also includes a three-way pipeline, the first interface of the three-way pipeline is connected with the air inlet of the combustion preheating box and the first interface is communicated with the heating chamber; the second interface of the three-way pipeline is connected with the heating chamber; The interface is connected with an exhaust pipe; the third interface of the three-way pipe is directly arranged below the first interface. Through the three-way pipe, it is convenient to remove ash from the inside of the combustion preheating box from the third interface.

Further, a plurality of heating sleeves are connected to the outside of the exhaust pipe. The exhaust gas is preheated by the heating sleeve, which is easy to be ignited by the combustion rod and the ignition rod, so that it can be fully burned.

Further, the upper and lower ends of the combustion cylinder are circumferentially spaced with a splitter plate, the combustion cylinder is fixedly arranged in the heating chamber through the splitter plate, and is spaced from the inner wall and the bottom plate of the combustion preheating box. , forming a channel for gas circulation. The exhaust gas can be split through the split plate, so that the heating is more uniform and the combustion is more complete.

Further, the combustion cylinder is disposed directly above the air inlet. The bottom of the combustion cylinder can disperse the exhaust gas discharged from the air inlet from the surrounding, and block the dust in the exhaust gas, so that the dust can be collected at the bottom of the combustion cylinder, which is convenient for dust removal from the third interface.

Further, the ignition rod is erected on the combustion preheating box through a bracket, and is arranged outside the air outlet. The combustion of the ignition rod is made more stable by the bracket.

Further, the air outlet extends outward and is higher than the top of the combustion preheating box. The time for heating the exhaust gas is prolonged, making it easier to ignite the exhaust gas, so that the combustion of the exhaust gas is more sufficient.

Further, an insulation layer is provided outside the combustion preheating box, and the insulation layer is detachably sleeved outside the combustion preheating box. Through the thermal insulation layer, the heat loss of the combustion preheating box is reduced, and the utilization rate of energy is improved.

Further, the third interface outer cover is provided with an end cover. The three-way pipe is sealed by the end cover, which is convenient for the exhaust gas to flow to the combustion preheating box. At the same time, when dust removal is required, the end cover can be directly opened, which makes dust removal more convenient.

To sum up, the utility model can better make the exhaust gas fully combusted, and the dust removal is simple and efficient.

Description of drawings

FIG. 1 is a schematic structural diagram of a tail gas treatment device according to a specific embodiment of the present invention.

FIG. 2 is a schematic view of the structure of FIG. 1 in another orientation after some components are removed.

FIG. 3 is a schematic view of the structure of FIG. 2 in another orientation after some components are removed.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings.

In specific implementation, as shown in Figures 1-3, an exhaust gas treatment device includes a combustion preheating box 1 and an ignition rod 2, the combustion preheating box 1 has a heating chamber 3 for heating exhaust gas, and the The combustion preheating box 1 is provided with an air inlet 4 and an air outlet 5 that communicate with the heating chamber 3, and the ignition rod 2 is located outside the air outlet 5 and is arranged facing the air outlet 5; the heating chamber 3 is provided with a combustion cylinder 6. The combustion cylinder 6 is arranged at intervals from the side wall of the heating chamber 3. The combustion cylinder 6 has an opening communicating with the heating chamber 3. A guide tube 7 is fixed in the heating chamber 3. One end of the pipe 7 is communicated with the gas outlet 5, and the other end is arranged in the combustion cylinder 6, and the guide pipe 7 is arranged at intervals with the inner wall and the bottom plate of the combustion cylinder 6 to form a passage for gas circulation; The combustion rod 8, the combustion end of the combustion rod 8 enters the guide pipe 7 through the gas outlet 5. In this way, by arranging the combustion rod in the guide tube, the burning time is prolonged, and the external ignition rod is added, so that the formaldehyde in the exhaust gas is fully burned, and the discharge of polyoxymethylene is reduced, thereby reducing the damage to the human body and reducing the Environmental pollution; the channel formed between the guide pipe, the combustion tube and the combustion preheating box enables the exhaust gas to be fully preheated, which is convenient for the combustion rod and the ignition rod to burn the exhaust gas.

In this embodiment, a three-way pipe 9 is further included, and the first interface 901 of the three-way pipe 9 is connected to the air inlet 4 of the combustion preheating box 1 and the first interface 901 is connected to the heating chamber 3 The second interface 902 of the three-way pipeline 9 is connected with the exhaust pipe 10 ; the third interface 903 of the three-way pipeline 9 is directly arranged below the first interface 901 . Through the three-way pipe, it is convenient to remove ash from the inside of the combustion preheating box from the third interface.

In this embodiment, a plurality of heating sleeves 11 are attached to the outer shell of the exhaust pipe 10 . The exhaust gas is preheated by the heating sleeve, which is easy to be ignited by the combustion rod and the ignition rod, so that it can be fully burned.

In this embodiment, the upper and lower ends of the combustion cylinder 6 are circumferentially spaced with flow divider plates 12 , and the combustion cylinder 6 is fixed in the heating chamber 3 through the flow divider plates 12 , and communicates with the combustion preheater. The inner wall and the bottom of the hot box 1 are arranged at intervals to form a passage for gas circulation. The exhaust gas can be split through the split plate, so that the heating is more uniform and the combustion is more complete.

In the present embodiment, the combustion cylinder 6 is disposed directly above the air inlet 4 . The bottom of the combustion cylinder can disperse the exhaust gas discharged from the air inlet from the surrounding, and block the dust in the exhaust gas, so that the dust can be collected at the bottom of the combustion cylinder, which is convenient for dust removal from the third interface.

In this embodiment, the ignition rod 2 is erected on the combustion preheating box 1 through a bracket 13 , and is arranged outside the air outlet 5 . The combustion of the ignition rod is made more stable by the bracket.

In this embodiment, the air outlet 5 extends outward and is higher than the top of the combustion preheating box 1 . The time for heating the exhaust gas is prolonged, making it easier to ignite the exhaust gas, so that the combustion of the exhaust gas is more sufficient.

In this embodiment, an insulating layer 14 is provided outside the combustion preheating box 1 , and the insulating layer 14 is detachably sleeved outside the combustion preheating box 1 . Through the thermal insulation layer, the heat loss of the combustion preheating box is reduced, and the utilization rate of energy is improved.

In this embodiment, the outer cover of the third interface 903 is provided with an end cover 15 . The three-way pipe is sealed by the end cover, which is convenient for the exhaust gas to flow to the combustion preheating box. At the same time, when dust removal is required, the end cover can be directly opened, which makes dust removal more convenient.

The working principle and process of the present utility model:

When the device is used, the exhaust gas flows into the combustion preheating box through the exhaust pipe, and circulates in the channel formed between the combustion preheating box, the combustion cylinder, the guide pipe and the gas outlet. The heating sleeve set on the exhaust pipe Both the exhaust gas and the combustion preheating box can heat the exhaust gas so that the combustion rod and ignition rod can fully burn it, and a little carbonized dust in the exhaust gas will accumulate at the bottom of the combustion preheating box. The end cover at the three ports can remove the dust at the bottom of the combustion preheating box, and the operation is simple and convenient.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that; The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention , which shall be included in the scope of the claims and description of the present invention.

Claims (9)

1. A tail gas treatment device, comprising: A combustion preheating box and an ignition rod, the combustion preheating box has a heating cavity for heating the exhaust gas, the combustion preheating box is provided with an air inlet and an air outlet communicating with the heating cavity, and the ignition rod is located in the The outside of the air outlet and facing the air outlet is arranged; it is characterized in that, The heating chamber is provided with a combustion cylinder, the combustion cylinder is spaced from the side wall of the heating chamber, the combustion cylinder has an opening that communicates with the heating chamber, a guide tube is fixedly arranged in the heating chamber, and the One end of the guide pipe is communicated with the air outlet, and the other end is arranged in the combustion cylinder, and the guide pipe is spaced from the inner wall and the bottom plate of the combustion cylinder to form a passage for gas circulation; Combustion rod, the combustion end of the combustion rod enters into the guide tube through the air outlet. 2 . The exhaust gas treatment device according to claim 1 , further comprising a three-way pipe, the first interface of the three-way pipe is connected to the air inlet of the combustion preheating box, and the first interface is connected to the air inlet of the combustion preheating box. communicated with the heating chamber; the second interface of the three-way pipeline is connected with an exhaust pipe; the third interface of the three-way pipeline is directly arranged below the first interface. 3 . The exhaust gas treatment device according to claim 2 , wherein a plurality of heating sleeves are connected to the outer shell of the exhaust gas pipe. 4 . 4 . The exhaust gas treatment device according to claim 1 , wherein the upper and lower ends of the combustion cylinder are circumferentially spaced with flow dividing plates, and the combustion cylinder is fixed in the heating cavity through the dividing plates. 5 . , and is spaced from the inner wall and bottom of the combustion preheating box to form a gas circulation channel. 5 . The exhaust gas treatment device according to claim 4 , wherein the combustion cylinder is disposed directly above the air inlet. 6 . 6 . The exhaust gas treatment device according to claim 1 , wherein the ignition rod is erected on the combustion preheating box through a bracket, and is located outside the gas outlet. 7 . 7 . The exhaust gas treatment device according to claim 1 , wherein the gas outlet extends outward and is higher than the top of the combustion preheating box. 8 . 8 . The exhaust gas treatment device according to claim 1 , wherein an insulation layer is provided outside the combustion preheating box, and the insulation layer is detachably sleeved outside the combustion preheating box. 9 . 9 . The exhaust gas treatment device according to claim 2 , wherein the outer cover of the third interface is provided with an end cover. 10 .

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