CN219571906U - Catalytic injection combustion device - Google Patents

Abstract

The utility model provides a catalytic injection combustion device, which comprises a plurality of stages of catalytic injection components, wherein a catalyst cavity is arranged in the catalytic injection components, and a central heat accumulator is arranged in the catalyst cavity; the catalyst cavity is filled with a second catalyst; a circular seam is formed between the side surface of the central heat accumulator and the inner wall of the catalyst cavity; a support connecting pipe is arranged between two adjacent catalytic injection components and is communicated with a catalyst cavity in the two adjacent catalytic injection components; the periphery of the supporting connecting pipe between the two adjacent catalytic injection parts is provided with a thermal catalytic cover, and the thermal catalytic cover is provided with a through hole; a high-temperature resistant igniter is arranged in front of the circumferential seam of the first-stage catalytic injection component; the first stage catalytic injection component is provided with a fuel interface which is communicated with a catalyst cavity in the first stage catalytic injection component. The utility model can promote the vaporization and cracking of the mixed fuel, improve the combustion efficiency of the mixed fuel and save the use amount of the mixed fuel.

Description

Catalytic injection combustion device

Technical Field

The utility model relates to the technical field of combustors, in particular to a catalytic injection combustion device.

Background

With the advancement of technology, the demand of human beings for energy is also increasing. The mixed fuel of methanol and water is formed by adding a certain proportion of water into methanol, the mixed fuel belongs to water-based fuel, the popularization and the use of the mixed fuel can relieve the problem of excessive dependence on traditional fossil energy, and can relieve the problem of current energy shortage, and the mixed fuel is environment-friendly because the methanol only produces water and carbon dioxide after being combusted, does not produce sulfur-containing compounds or nitrogen-containing compounds and the like.

However, when the existing burner is used for burning by the mixed fuel, the mixed fuel of methanol and water is liquid and is not easy to vaporize, and part of methanol cannot be fully vaporized and high-temperature cracked in the burning process of the mixed fuel, so that the burning reaction of the methanol is affected, the burning of the methanol is incomplete, the heat generated in burning the mixed fuel in unit volume is lower, and the burning efficiency is low.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a catalytic injection combustion device.

The utility model aims at realizing the following technical scheme: a catalytic injection combustion device comprises a plurality of stages of catalytic injection components, wherein a catalyst cavity is arranged in the catalytic injection components, and a central heat accumulator is arranged in the catalyst cavity; the catalyst cavity is filled with a second catalyst; a circular seam is formed between the side surface of the central heat accumulator and the inner wall of the catalyst cavity; a support connecting pipe is arranged between two adjacent catalytic injection components and is communicated with a catalyst cavity in the two adjacent catalytic injection components; the periphery of the supporting connecting pipe between the two adjacent catalytic injection parts is provided with a thermal catalytic cover, and the thermal catalytic cover is provided with a through hole; a high-temperature resistant igniter is arranged in front of the circumferential seam of the first-stage catalytic injection component, a plurality of support columns are arranged on the last-stage catalytic injection component, and a thermal catalytic cover is arranged on the periphery of each support column;

the first stage catalytic injection component is provided with a fuel interface which is communicated with a catalyst cavity in the first stage catalytic injection component.

Preferably, the catalyst is a metal catalytic particle.

Preferably, the diameter of the manganese metal particles is larger than the diameter of the circumferential seam.

Preferably, the thermocatalytic shield is made of titanium.

Preferably, the central heat accumulator is provided with a boss which is fixedly connected with the inner wall of the catalyst cavity.

The beneficial effects of the utility model are as follows: when the utility model is in a stable combustion state, the catalyst and the thermal catalytic cover are heated to a high temperature state; the mixed fuel enters a catalyst cavity in the catalytic injection part and contacts with a high-temperature catalyst in the catalyst cavity, so that the mixed fuel is heated and fully vaporized, methanol and water in the mixed fuel are fully converted into gas, part of the mixed fuel passes through the multi-stage catalytic injection part to be heated and vaporized in multiple stages, the vaporized mixed fuel is finally sprayed out from a circular seam on each catalytic injection part, and the mixed fuel is ignited by flame and burnt after being sprayed out; the mixed fuel burnt is contacted with the hot catalytic cover in the process of ejection, and under the action of the hot catalytic cover, methanol in combustion is fully vaporized and cracked, so that the combustion reaction is fully carried out, the combustion efficiency of the mixed fuel is greatly improved, and the heat generated in the combustion of the mixed fuel in unit volume is improved, thereby playing a role in saving fuel.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

In the figure: 1. the catalytic injection component 2, the support connecting pipe 3, the thermal catalytic cover 4, the through hole 5, the support column 6, the central heat accumulator 7, the catalyst 8, the circumferential seam 9, the high temperature resistant igniter 10, the fuel interface 11 and the boss.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

As shown in fig. 1-2, a catalytic injection combustion device comprises a plurality of stages of catalytic injection components 1, wherein a catalyst cavity is arranged in the catalytic injection components 1, and a central heat accumulator 6 is arranged in the catalyst cavity. The central heat accumulator 6 is of a solid structure, and the central heat accumulator 6 is made of a metal material and can store heat. A boss 11 is arranged on one side of the central heat accumulator 6, and the boss 11 is fixedly connected with the inner wall of the catalyst cavity. The catalyst chamber contains a catalyst 7. The catalyst 7 is a metal catalytic particle. Preferably, the catalyst 7 is a manganese metal particle.

A circumferential seam 8 is formed between the side surface of the central heat accumulator 6 and the inner wall of the catalyst chamber. The width of the circumferential seam 8 is smaller than the particle diameter of the catalyst 7, i.e. the diameter of the manganese metal particles is larger than the width of the circumferential seam 8. A high temperature resistant igniter 9 is arranged in front of the circumferential seam 8 of the first stage catalytic injection part 1. The high temperature resistant igniter 9 is capable of generating an arc for igniting the mixed fuel.

A support connecting pipe 2 is arranged between two adjacent catalytic injection components 1, and the support connecting pipe 2 is communicated with the catalyst cavities in the two adjacent catalytic injection components. The periphery of the support connecting pipe 2 between the two adjacent catalytic injection components is provided with a thermal catalytic cover 3, and the thermal catalytic cover 3 is provided with a through hole 4. The thermocatalytic shield 3 is cylindrical. In the present utility model, the thermocatalytic shield 3 is made of titanium.

The last stage catalytic spraying part 1 is provided with a plurality of support columns 5, and the periphery of the support columns 5 is provided with a thermal catalytic cover 3. The first-stage catalytic injection part 1 is provided with a fuel interface 10, and the fuel interface 10 is communicated with a catalyst cavity in the first-stage catalytic injection part 1. The mixed fuel enters the catalytic injection unit through the fuel port 10. The mixed fuel is formed by mixing methanol and water, and the mass ratio of the methanol in the mixed fuel is 50% -70%.

In the present utility model, the catalytic injection combustion device includes a total of three stages of catalytic injection units 1.

When the utility model is used, the mixed fuel firstly enters the catalyst cavity in the first-stage catalytic injection component from the fuel interface, a part of the first mixed fuel is sprayed out from the annular gap on the first-stage catalytic injection component after passing through the second catalyst in the second catalyst cavity, the sprayed first mixed fuel is ignited by the high-temperature resistant igniter to form spray flame, and the spray flame is sprayed out from the through hole on the thermal catalytic cover; the other part of the first mixed fuel enters a second catalyst cavity in the second stage catalytic injection part along a supporting connecting pipe after passing through a second catalyst in the catalyst cavity, one part of the first mixed fuel entering the second stage catalytic injection part is sprayed out from a circular seam on the second stage catalytic injection part, and the other part of the first mixed fuel enters a catalyst cavity in the next stage catalytic injection part through the supporting connecting pipe; by the mode, the first mixed fuel is sprayed out of the annular gaps on the catalytic spraying parts of each stage, and the first mixed fuel sprayed out of the catalytic spraying parts of the next stages is ignited by the spraying flame sprayed out of the catalytic spraying parts of the first stage.

When the utility model burns for a certain time and is in a stable combustion state, the catalyst and the thermal catalytic cover are heated to a high temperature state; the mixed fuel enters a catalyst cavity in the catalytic injection part and contacts with a high-temperature catalyst in the catalyst cavity, so that the mixed fuel is heated and fully vaporized, methanol and water in the mixed fuel are fully converted into gas, part of the mixed fuel passes through the multi-stage catalytic injection part to be heated and vaporized in multiple stages, the vaporized mixed fuel is finally sprayed out from a circular seam on each catalytic injection part, and the mixed fuel is ignited by flame and burnt after being sprayed out; the mixed fuel burnt is contacted with the hot catalytic cover in the process of ejection, and under the action of the hot catalytic cover, methanol in combustion is fully vaporized and cracked, so that the combustion reaction is fully carried out, the combustion efficiency of the mixed fuel is greatly improved, and the heat generated in the combustion of the mixed fuel in unit volume is improved, thereby playing a role in saving fuel.

The central heat accumulator has the function of accumulating heat, and when the catalytic injection combustion device performs intermittent combustion, the central heat accumulator can release the heat stored by the central heat accumulator during the combustion interval, so that the temperature of the catalyst is kept in a relatively stable state, and the stable vaporization effect on the mixed fuel is ensured.

The utility model can be applied to combustion heating in the scenes of boilers, smelting furnaces, kilns and the like.

The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present utility model fall within the scope of the present utility model.

Claims (5)

1. The catalytic injection combustion device is characterized by comprising a plurality of stages of catalytic injection components, wherein a catalyst cavity is arranged in the catalytic injection components, and a central heat accumulator is arranged in the catalyst cavity; the catalyst cavity is filled with a second catalyst; a circular seam is formed between the side surface of the central heat accumulator and the inner wall of the catalyst cavity; a support connecting pipe is arranged between two adjacent catalytic injection components and is communicated with a catalyst cavity in the two adjacent catalytic injection components; the periphery of the supporting connecting pipe between the two adjacent catalytic injection parts is provided with a thermal catalytic cover, and the thermal catalytic cover is provided with a through hole; a high-temperature resistant igniter is arranged in front of the circumferential seam of the first-stage catalytic injection component, a plurality of support columns are arranged on the last-stage catalytic injection component, and a thermal catalytic cover is arranged on the periphery of each support column;

the first stage catalytic injection component is provided with a fuel interface which is communicated with a catalyst cavity in the first stage catalytic injection component.

2. A catalytic injection combustion device according to claim 1, wherein the catalyst is a metal catalytic particle.

3. A catalytic injection combustion device according to claim 2, wherein the catalyst is manganese metal particles having a diameter greater than the diameter of the circumferential gap.

4. A catalytic injection combustion device according to claim 1, wherein the thermal catalytic cap is made of titanium.

5. A catalytic injection burner assembly according to any one of claims 1 to 4, wherein the central heat reservoir is provided with a boss fixedly attached to the inner wall of the catalyst chamber.