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Biomass gas burner with adjustable flame length and using method thereof

A technology of biomass gas and flame length, which is applied in the direction of combustion method, burner, combustion type, etc., can solve the problems of poor quality of rotary flame heating, billet oxidation and burning of nitrogen oxides, flame length can not be flexibly adjusted, etc., to achieve the shape Ease of control, reduced emission, and large radiation angle coefficient

Inactive Publication Date: 2019-04-12
NORTHEASTERN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a biomass gas burner, which can not only effectively solve the problem that the flame length of the traditional biomass gas burner cannot be flexibly adjusted under the condition of constant heat load, but also can change the flame heating of the rotary body. Technical problems such as poor quality, serious oxidation and burning of steel billets, and high content of pollutants such as nitrogen oxides in combustion products

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  • Biomass gas burner with adjustable flame length and using method thereof

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Embodiment 1

[0045] The present invention is further described by taking wheat straw gasification gas as an example as follows:

[0046] Using wheat straw gasification gas as fuel, its component volume percentage is: H 2 19.5%, CO 19.8%, CH 4 5.2%, CO 2 12.1%, N 2 39.4%, low calorific value of 6019kJ / m 3 , The rated thermal load of a single burner is 125kW. The biomass gas burner with adjustable flame length is installed on the furnace head of the slab heating furnace. Under the condition of constant heat load, the heating process of near burning and far burning can be realized by adjusting the flame length.

[0047] Take the air consumption coefficient as 1.02, and calculate the required flow rate of wheat straw gasification gas and combustion-supporting air through combustion calculation. Based on this, make burner shell 1, air inlet pipe 2, gas inlet pipe 4, gas nozzle 5, Movable air cover 6, fixed air cover 7, first air port 8, second air port 9, inner burner brick 14, air rin...

Embodiment 2

[0050] Take the gasification gas of dry branches as fuel as an example to further illustrate the present invention:

[0051] Using dry branch gasification gas as fuel, its component volume percentage is: H 2 22.5%, CO 18.8%, CH 4 7.2%, CO 2 14.1%, N 2 37.4%, low calorific value of 6217kJ / m 3 , The rated thermal load of a single burner is 250kW. Preparation of dry branch gasification gas burner with adjustable flame length Installed on the burner head of the billet heating furnace, under the condition of constant heat load, the heating process of near burning and far burning can be realized by adjusting the length of the flame.

[0052] Take the air consumption coefficient as 1.03, calculate the flow rate of gasification gas and combustion-supporting air required by combustion calculation, and based on this, make burner shell 1, air inlet pipe 2, gas inlet pipe 4, and gas nozzle 5 , movable wind cover 6, fixed wind cover 7, first tuyere 8, second tuyere 9, inner burner ...

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Abstract

The invention discloses a biomass gas burner with adjustable flame lengths. A mixing chamber is arranged in the center of inner burner blocks, a fuel gas source communicates with the left end of a fuel gas effuser through a fuel gas inlet pipe; the right end of the fuel gas effuser penetrates through a burner outer shell and extends into the mixing chamber; a fixed air cover sleeves the outer sideof the fuel gas effuser; a primary air channel is formed between the outer wall of the fuel gas effuser and the inner wall of the fixed air cover; a movable air cover is rotatably assembled on the outer side of the fixed air cover; a first air port and a second air port are correspondingly formed in overlapping parts of the fixed air cover and the movable air cover; the size of a opening formed by the first air port and the second air port is adjusted by a rotary movable air cover; one end of the primary air channel communicates with an air inlet pipe through the opening; the other end of theprimary air channel communicates with the mixing chamber; a secondary air channel is further arranged on the inner burner blocks; and the air inlet pipe communicates with a furnace chamber through the secondary air channel. According to the biomass gas burner with the adjustable flame lengths, air covers are used for adjusting a primary air flow rate, so the ratio of primary and secondary combustion air can be adjusted without disassembling a burner, and the operation is very convenient and simple.

Description

technical field [0001] The invention belongs to the field of flame furnace thermal engineering, and relates to gas combustion, mass transfer, and heat transfer application technologies, in particular to a biomass gas burner with adjustable flame length and its use method. The invention can be used in various billet heating furnaces, It can also be used in various industrial furnaces such as aluminum melting furnaces and boilers that use biomass gas as fuel. Background technique [0002] Biomass is known as the fourth largest energy source in the world. For the utilization of biomass, people tend to gasify it to obtain biomass gas. The burner is the most important part of the flame furnace, which plays a vital role in the organization of combustion in the furnace, the heating quality and heating efficiency of the workpiece. With the increasing awareness of the use of biomass energy in countries around the world, biomass The development and application of gas burners has beco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/24F23D14/48F23D14/58F23D14/62F23L1/00F23L9/00
CPCF23D14/24F23D14/48F23D14/58F23D14/62F23L1/00F23L9/00
Inventor 冯明杰徐凤森周帅磊郭奕毛成
Owner NORTHEASTERN UNIV
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