CN210951302U

CN210951302U - Blast furnace gas built-in burner

Info

Publication number: CN210951302U
Application number: CN201921320306.XU
Authority: CN
Inventors: 欧冶金; 程松; 彭富珍
Original assignee: Hubei Dongsheng Tianlong Energy Saving Technology Co ltd
Current assignee: Hubei Dongsheng Tianlong Energy Saving Technology Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-07-07
Anticipated expiration: 2029-08-15

Abstract

The utility model provides a blast furnace gas embeds combustor, include: the outer part of the shell is connected with an external air inlet pipe; the combustion chamber is coaxially arranged inside the shell and comprises a first combustion section and a second combustion section which are sequentially connected, and an internal air inlet pipe is connected to the outside of the first combustion section; the heat storage layer is filled in a gap between the second combustion section and the shell and stores heat generated by combustion of the fuel gas; wherein, the spinning disk is installed to first burning section, and the gas that will get into the combustion chamber forms the whirl. The beneficial effects of the utility model reside in that: ensuring the full combustion of the flue gas; the phenomenon that the combustion environment cannot reach the ignition temperature to cause flameout is avoided; flaring processing is adopted at the port of the combustion cavity, so that the combustion range is expanded, and the combustion is more sufficient; the gas inlet pipe adopts a design that the diameters of two ends are large and the diameter of the middle is small, and gas is primarily mixed in the gas inlet process; the heat insulating layer can prevent the heat of internal combustion from exchanging with the outside, and avoid heat loss.

Description

Blast furnace gas built-in burner

Technical Field

The utility model relates to a blast furnace gas cyclic utilization field, concretely relates to built-in combustor of blast furnace gas.

Background

Blast furnace gas is tail gas discharged by a steelmaking blast furnace with a low calorific value, is used as a gas fuel, contains a large amount of non-combustible components, and is generally used as a boiler fuel to generate electricity for a self-contained power plant of a large domestic steelmaking enterprise.

Because the blast furnace gas has low heat value and the heat value is unstable due to reasons such as water absorption, the stable combustion of the blast furnace gas is not easily caused due to the over-high ignition point and unstable combustion pressure, so that the blast furnace gas is easy to extinguish in the combustion process.

SUMMERY OF THE UTILITY MODEL

In order to ensure the stability of the blast furnace gas in the combustion process, the utility model provides a blast furnace gas built-in burner.

The specific technical scheme is as follows:

a blast furnace gas built-in burner, which is different from the blast furnace gas built-in burner, comprising:

the outer part of the shell is connected with an external air inlet pipe;

the combustion chamber is coaxially arranged inside the shell and comprises a first combustion section and a second combustion section which are sequentially connected, and an internal air inlet pipe is connected to the outside of the first combustion section;

and

the heat storage layer is filled in a gap between the second combustion section and the shell and stores heat generated by combustion of gas;

the first combustion section is provided with a swirl plate, and fuel gas entering the combustion cavity forms swirl.

In the technical scheme, the combustion cavity is cylindrical, and two or more than two vent holes are formed in the tangential direction of the first combustion section.

In the above technical solution, the second combustion section includes a second connection portion and a second expansion portion, and a diameter of the second expansion portion is larger than the second connection portion.

In the above technical solution, the igniter is installed at the second connecting portion.

In the technical scheme, a water discharge valve is connected between the combustion cavity and the shell in a penetrating manner.

In the above technical scheme, the heat storage layer contains a honeycomb ceramic heat storage body.

In the above technical scheme, the outside intake pipe includes first inlet end, second inlet end and the third inlet end that connects gradually, the diameter of second inlet end is less than first inlet end and third inlet end.

In the above technical solution, the housing includes a heat insulating layer.

Compared with the prior art, the beneficial effects of the utility model reside in that: (1) the gas is used for generating rotational flow for combustion, so that the oxygen content in the flue gas is increased, and the sufficient combustion of the flue gas is ensured; (2) the heat storage layer prepared by the heat storage material can store the heat of flue gas combustion, so that flameout caused by the fact that the combustion environment cannot reach the ignition temperature is avoided, and raw materials are saved for subsequent ignition; (3) flaring processing is adopted at the port of the combustion cavity, so that the combustion range is expanded, and the combustion is more sufficient; (4) the gas inlet pipe adopts a design that the diameters of two ends are large and the diameter of the middle is small, and gas is primarily mixed in the gas inlet process; (5) the heat insulating layer can prevent the heat of internal combustion from exchanging with the outside, and avoid heat loss.

Drawings

FIG. 1 is a block diagram of an embodiment;

FIG. 2 is a view showing the structure of the second embodiment;

FIG. 3 is a diagram of a third junction of an embodiment;

the heat-storage type air-conditioning system comprises a shell, a heat-insulating layer, an external air inlet pipe, a first air inlet end, a second air inlet end, a third air inlet end, a 3 combustion cavity, a first combustion section, a second combustion section, an internal air inlet pipe, a heat-storage layer, a 6-vortex sheet, a 3011-vent hole, a 3021-second connecting part, a 3022-second expansion part, a 7-igniter and an 8-drain valve, wherein the shell is 1-arranged on the heat-insulating layer, the external air inlet pipe is 2-arranged on the heat-insulating layer, the first.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example one

A blast furnace gas in-line burner comprising: the air conditioner comprises a shell 1, wherein an external air inlet pipe 2 is connected to the outside of the shell 1;

the combustion chamber 3 is coaxially arranged inside the shell 1, the combustion chamber 3 comprises a first combustion section 301 and a second combustion section 302 which are sequentially connected, and an internal air inlet pipe 4 is connected outside the first combustion section 301; the heat storage layer 5 is filled in a gap between the second combustion section 302 and the shell 1, and stores heat generated by combustion of gas, and the heat storage layer 5 comprises a honeycomb ceramic heat accumulator;

the first combustion section 301 is provided with a swirl plate 6, and fuel gas entering the combustion chamber 3 forms swirl flow.

Example two

A blast furnace gas in-line burner comprising:

the air conditioner comprises a shell 1, wherein an external air inlet pipe 2 is connected to the outside of the shell 1;

the combustion chamber 3 is coaxially arranged inside the shell 1, the combustion chamber 3 comprises a first combustion section 301 and a second combustion section 302 which are sequentially connected, and an internal air inlet pipe 4 is connected outside the first combustion section 301; and

a heat storage layer 5, which fills a gap between the second combustion section 302 and the casing 1, and stores heat generated by combustion of gas;

the spinning disk 6 is installed to first burning section 301, will get into the gas in burning chamber 3 forms the whirl, follows first burning section 301 tangential direction all is equipped with two or more than two air vents 3011, and through the mode that spinning disk 6 combines with air vent 3011, the flue gas forms the whirl, makes the oxygen content in the flue gas be greater than 15%.

The second combustion stage 302 includes a second connection portion 3021 and a second extension portion 3022, and the second extension portion 3022 has a larger diameter than the second connection portion 3021.

EXAMPLE III

the combustion chamber 3 is coaxially arranged inside the shell 1, the combustion chamber 3 comprises a first combustion section 301 and a second combustion section 302 which are sequentially connected, and an internal air inlet pipe is connected to the outside of the first combustion section 301; and

wherein, spinning disk 6 is installed to first combustion section 301, will get into the gas in combustion chamber 3 forms the whirl, follows first combustion section 301 tangential direction all is equipped with two or more air vent 3011.

The second connection portion is mounted with an igniter 6.

The water discharge valve 8 is connected between the combustion chamber 3 and the shell 1 in a penetrating manner, and the subsequent combustion effect can be influenced by the accumulation of water in the combustor under the condition that the equipment is placed for a long time.

The outside intake pipe 2 is including the first inlet end 201, the second inlet end 202 and the third inlet end 203 that connect gradually, the diameter of second inlet end 202 is less than first inlet end 201 and third inlet end 203, and the intake pipe adopts the design that the diameter is big in both ends diameter, and the diameter is little in the middle of, carries out preliminary mixing with the gas in the process of admitting air.

The shell 1 comprises a heat insulation layer 101, and the heat insulation layer 101 prevents the heat storage layer 5 from exchanging heat with the outside, so that heat loss is reduced.

The utility model discloses an introduce combustion chamber 3 with gas with the whirl mode, make its gas and air mixing more even, improve combustion efficiency, combine the mode of heat accumulation burning, can make it carry out the combustion gas temperature on the ignition, ensure to ignite smoothly, the burning is stable.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A blast furnace gas fired burner, comprising:

the air conditioner comprises a shell (1), wherein an external air inlet pipe (2) is connected to the outside of the shell (1);

the combustion chamber (3) is coaxially arranged inside the shell (1), the combustion chamber (3) comprises a first combustion section (301) and a second combustion section (302) which are sequentially connected, and an internal air inlet pipe (4) is connected to the outside of the first combustion section (301);

and

a heat storage layer (5), wherein the heat storage layer (5) is filled in a gap between the second combustion section (302) and the casing (1) and stores heat generated by combustion of gas;

wherein, spinning disk (6) are installed to first combustion section (301), will get into the gas in combustion chamber (3) forms the whirl.

2. The blast furnace gas burner according to claim 1, wherein the combustion chamber (3) is a cylinder, and two or more air holes (3011) are arranged along the tangential direction of the first combustion section (301).

3. The blast furnace gas built-in burner according to claim 1, characterized in that the second combustion section (302) comprises a second connection (3021) and a second expansion (3022), the second expansion (3022) having a larger diameter than the second connection (3021).

4. A blast furnace gas built-in burner according to claim 3, characterized in that the second connection (3021) is fitted with an igniter (7).

5. The blast furnace gas burner according to claim 1, characterized in that a drain valve (8) is connected between the combustion chamber (3) and the outer shell (1).

6. The blast furnace gas burner as claimed in claim 1, wherein said heat accumulating layer (5) comprises a honeycomb ceramic heat accumulator.

7. The blast furnace gas burner according to claim 1, wherein the external inlet pipe (2) comprises a first inlet end (201), a second inlet end (202) and a third inlet end (203) which are connected in sequence, and the diameter of the second inlet end (202) is smaller than that of the first inlet end (201) and the third inlet end (203).

8. The blast furnace gas built-in burner according to claim 1, characterized in that the outer shell (1) comprises a thermal insulation layer (101).