CN219473641U

CN219473641U - Combustor tail nozzle

Info

Publication number: CN219473641U
Application number: CN202320691771.4U
Authority: CN
Inventors: 郎琳; 周良德
Original assignee: Hangzhou Forward Technology Co Ltd
Current assignee: Hangzhou Forward Technology Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-08-04
Anticipated expiration: 2033-03-31

Abstract

The utility model provides a combustor tail pipe, which comprises a tail pipe body and a fuel pipe, wherein the tail pipe body is arranged at one end of a combustion cylinder, a catalytic chamber is arranged in the tail pipe body, and a catalyst is arranged in the catalytic chamber; one end of the fuel pipe is a mixed fuel inlet end, and the other end of the fuel pipe is connected with the catalytic chamber; the tail nozzle body is internally provided with an annular cavity and a post-combustion air channel, and the annular cavity is positioned between the catalytic chamber and the combustion cylinder; one end of the post-combustion air channel is communicated with the annular cavity, and the post-combustion air channel is connected with the post-combustion fan through a post-combustion air pipe; an air hole is formed in the inner side of the annular cavity; the catalytic chamber is connected with a combustion part in the combustion cylinder through a connecting pipe. The utility model can promote the vaporization of the mixed fuel, ensure that the mixed fuel can be fully mixed with air and fully combusted, improve the combustion efficiency of the mixed fuel, and increase the heat generated in the combustion of the mixed fuel in unit volume, thereby playing a role in saving fuel.

Description

Combustor tail nozzle

Technical Field

The utility model relates to the technical field of combustors, in particular to a mixed fuel combustor.

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 reacted in the burning process of the mixed fuel, so that the methanol is not fully burnt, the heat generated in burning the mixed fuel in unit volume is low, and the burning efficiency is low.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a combustor tail nozzle.

The utility model aims at realizing the following technical scheme: a combustor tail pipe comprises a tail pipe body and a fuel pipe, wherein the tail pipe body is arranged at one end of a combustion cylinder, a catalytic chamber is arranged in the tail pipe body, and a catalyst is arranged in the catalytic chamber; one end of the fuel pipe is a mixed fuel inlet end, and the other end of the fuel pipe is connected with the catalytic chamber;

the tail nozzle body is internally provided with an annular cavity and a post-combustion air channel, and the annular cavity is positioned between the catalytic chamber and the combustion cylinder; one end of the post-combustion air channel is communicated with the annular cavity, and the post-combustion air channel is connected with the post-combustion fan through a post-combustion air pipe; an air hole is formed in the inner side of the annular cavity; the catalytic chamber is connected with a combustion part in the combustion cylinder through a connecting pipe.

Preferably, the afterburner fan is an axial flow fan.

Preferably, the catalytic chamber is annular.

Preferably, the catalyst is a metal catalytic particle.

Preferably, the mixed fuel is introduced into the fuel line from a mixed fuel inlet.

Preferably, the jet body is made of heat resistant steel.

The beneficial effects of the utility model are as follows: in the utility model, when the burner is in stable combustion, tail spray flame is sprayed out of the tail spray pipe body, and the catalyst in the catalytic chamber is heated to a high temperature state; after the mixed fuel is introduced into the fuel pipe, the mixed fuel firstly passes through a catalyst in the catalytic chamber and then enters the combustion part through the connecting pipe, and the combustion part ignites the mixed fuel; when the mixed fuel passes through the catalytic chamber, the mixed fuel is fully contacted with a high-temperature catalyst, so that the mixed fuel is vaporized, and the mixed fuel is quickly converted into a gaseous state, thus ensuring that the mixed fuel can be fully mixed with air and fully combusted, improving the combustion efficiency of the mixed fuel, increasing the heat generated in the combustion of the mixed fuel in unit volume, and playing a role in saving fuel;

the afterburner sucks in the afterburner air, and the afterburner air sequentially passes through the afterburner air pipe, the afterburner air channel, the annular cavity and the afterburner air holes and then contacts with the tail spray flames in the tail spray pipe to supplement oxygen for the tail spray flames, so that the combustion reaction of the tail spray flames is further promoted, and the combustion temperature is improved.

Drawings

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

Fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1. the combustion device comprises a combustion cylinder, 2, a tail nozzle body, 3, a catalyst, 4, an after-combustion air pipe, 5, an after-combustion fan, 6, a connecting pipe, 7, a combustion part, 8, an after-combustion air channel, 9, an annular cavity, 10, air holes, 11 and a fuel pipe.

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 combustor tail pipe comprises a tail pipe body 2 and a fuel pipe 11, wherein the tail pipe body 2 is arranged at one end of a combustion cylinder 1. The combustion cylinder 1 has a cylindrical shape, and a combustion member 7 is provided in the combustion cylinder 1.

The tail nozzle body 2 is internally provided with a catalytic chamber which is annular and is filled with a catalyst 3. One end of the fuel pipe 11 is a mixed fuel inlet end, the other end of the fuel pipe 11 is connected with the catalytic chamber, and the mixed fuel is introduced into the fuel pipe 11 from the mixed fuel inlet end.

An annular cavity 9 and an afterburner air channel 8 are arranged in the tail pipe body 2, and the annular cavity 9 is positioned between the catalytic chamber and the combustion cylinder 1. One end of the post-combustion air passage 8 is communicated with the annular cavity 9, and the post-combustion air passage 8 is connected with the post-combustion fan 5 through the post-combustion air pipe 4. The inner side of the annular cavity 9 is provided with an air hole 10. The catalytic chamber is connected to a combustion part 7 in the combustion vessel 1 by a connecting pipe 6.

The afterburner fan 5 is an axial flow fan. The tail pipe body 2 is made of heat-resistant steel and has good high-temperature resistance. The catalyst is metal catalytic particles. Preferably, the catalyst is manganese metal particles.

The mixed fuel used in the utility model is a mixture of methanol and water, wherein the mass ratio of the methanol in the mixed fuel is 50-70%.

When the burner is in stable combustion, tail spray flame is sprayed out of the tail spray pipe body, and the catalyst in the catalytic chamber is heated to a high temperature state; after the mixed fuel is introduced into the fuel pipe, the mixed fuel firstly passes through a catalyst in the catalytic chamber and then enters the combustion part through the connecting pipe, and the combustion part ignites the mixed fuel; when the mixed fuel passes through the catalytic chamber, the mixed fuel is fully contacted with the high-temperature catalyst, so that the mixed fuel is vaporized, and is quickly converted into a gaseous state, thus ensuring that the mixed fuel can be fully mixed with air and fully combusted, improving the combustion efficiency of the mixed fuel, increasing the heat generated in the combustion of the mixed fuel in unit volume, and playing a role in saving fuel. The afterburner sucks in the afterburner air, and the afterburner air sequentially passes through the afterburner air pipe, the afterburner air channel, the annular cavity and the afterburner air holes and then contacts with the tail spray flames in the tail spray pipe to supplement oxygen for the tail spray flames, so that the combustion reaction of the tail spray flames is further promoted, and the combustion temperature is improved.

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-described preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model, however, any change in shape or structure of the product is within the scope of the present utility model, and all the products having the same or similar technical solutions as the present application are included.

Claims

1. The tail pipe of the burner is characterized by comprising a tail pipe body and a fuel pipe, wherein the tail pipe body is arranged at one end of a combustion cylinder, a catalytic chamber is arranged in the tail pipe body, and a catalyst is arranged in the catalytic chamber; one end of the fuel pipe is a mixed fuel inlet end, and the other end of the fuel pipe is connected with the catalytic chamber;

2. The combustor tail pipe of claim 1, wherein the afterburner fan is an axial flow fan.

3. A combustor nozzle as claimed in claim 1, wherein the catalytic chamber is annular.

4. A combustor tail pipe as claimed in claim 1, wherein the catalyst is metal catalytic particles.

5. A burner tail pipe according to any of claims 1 to 4, wherein the mixed fuel is introduced into the fuel pipe from a mixed fuel inlet.

6. A combustor nozzle as in any of claims 1-4, wherein the nozzle body is made of heat resistant steel.