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Gasification burner, gasification furnace, and gasification method

A technology of gasification agent channels and bubbles, which is applied to the details of gasification devices, the gasification of granular/powdered fuels, and the production of combustible gases, etc., can solve the problems of unsatisfactory atomization effects of gasification burners, and achieve improved atomization Effect and gasification efficiency, enhance instability, promote the effect of cracking and atomization

Pending Publication Date: 2020-10-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new type of gasification burner, gasification furnace and gasification method in order to overcome the defect that the atomization effect of the existing gasification burner is not ideal.

Method used

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  • Gasification burner, gasification furnace, and gasification method
  • Gasification burner, gasification furnace, and gasification method
  • Gasification burner, gasification furnace, and gasification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Gasification burner

[0065] Such as figure 1 The gasification burner shown has four channels, which are the first gasification agent channel 10, the first slurry channel 20, the second gasification agent channel 30 and the second slurry channel from the inside to the outside. 40, the second slurry channel 40 is provided with a bubble generator 50, the bubble generator 50 includes a gas chamber, and the side wall and bottom wall of the gas chamber are evenly arranged such as Figure 5 The Venturi tube type opening structure 51 shown, the opening structure 51 has an air inlet, a throat 511 and an air outlet successively along the direction from the inner wall to the outer wall of the bubble generator 50, the air inlet of the opening structure 51 The contraction angle δ is 160°, the expansion angle ε of the gas outlet of the opening structure 51 is 60°; the distance between the bottom wall of the gas chamber and the bottom surface of the outlet of the gasification bu...

Embodiment 2

[0085] (1) Gasification burner

[0086] Such as figure 2 The gasification burner shown has three channels, which are the first gasification agent channel 10, the first slurry channel 20 and the second gasification agent channel 30 from the inside to the outside, and the first slurry channel 20 is provided with a bubble generator 50, the bubble generator 50 includes a gas chamber, and the side wall and the bottom wall of the gas chamber are evenly arranged with such as Figure 5 The Venturi tube type opening structure 51 shown, the opening structure 51 has an air inlet, a throat 511 and an air outlet successively along the direction from the inner wall to the outer wall of the bubble generator 50, the air inlet of the opening structure 51 The contraction angle δ is 160°, the expansion angle ε of the gas outlet of the opening structure 51 is 100°; the distance between the bottom wall of the gas chamber and the bottom surface of the outlet of the gasification burner is 15 mm. ...

Embodiment 3

[0104] (1) Gasification burner

[0105] Such as image 3 The gasification burner shown has four channels, which are the first gasification agent channel 10, the first slurry channel 20, the second gasification agent channel 30 and the second slurry channel from the inside to the outside. 40, the first slurry channel 20 and the second slurry channel 40 are equipped with a bubble generator 50, the bubble generator 50 includes a gas chamber, and the side wall and bottom wall of the gas chamber are evenly arranged with such Figure 5 The Venturi tube type opening structure 51 shown, the opening structure 51 has an air inlet, a throat 511 and an air outlet successively along the direction from the inner wall to the outer wall of the bubble generator 50, the air inlet of the opening structure 51 The contraction angle δ is 110°, the inner diameter d of the throat 511 of the perforated structure 51 is 3.5mm, and the expansion angle ε of the gas outlet of the perforated structure 51 i...

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Abstract

The invention discloses a gasification burner, a gasification furnace and a gasification method. A bubble generator is arranged in a slurry channel of the gasification burner and comprises a gas chamber; venturi tube type opening structures are uniformly distributed on the side wall and the bottom wall of the gas chamber; the open pore structure is sequentially provided with an air inlet, a throatpart and an air outlet along the direction from the inner wall to the outer wall of the bubble generator; the shrinkage angle of an air inlet of the open pore structure is 110-160 degrees, the innerdiameter d of a throat part of the open pore structure is larger than 0 and smaller than or equal to 3.5 mm, the expansion angle of an air outlet of the open pore structure is 60-100 degrees, and thedistance between the bottom wall of the gas chamber and the bottom surface of the outlet of the gasification burner is 15-300 mm. According to the gasification burner, a large number of small bubblesare doped through the bubble generator, and the instability of slurry is enhanced, so that the fracture and atomization of the slurry are promoted, and the atomization effect and gasification efficiency of the gasification burner are further improved.

Description

technical field [0001] The invention relates to a gasification burner, a gasification furnace and a gasification method. Background technique [0002] Gasification refers to the process in which gasification raw materials containing coal, coke, organic solid waste or biomass react with gasification agents under high temperature conditions to convert them into gas products and residues. The gasification agent is mainly water vapor, air, oxygen or a mixture thereof, and the gasification reaction includes a series of homogeneous and heterogeneous chemical reactions. Gasification can be used to produce fuel gas, industrial kiln gas, and civil gas, as well as hydrogen production, metallurgy, ammonia synthesis, alcohols, and liquid fuels. [0003] The characteristics of high temperature, high pressure, and good mixing of entrained bed gasification technology represent the mainstream direction of gasification technology development. It has faster processing speed, higher temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50
CPCC10J3/506C10J2200/152
Inventor 赵辉王晟张振武刘海峰代正华许建良梁钦锋龚欣王辅臣于广锁王亦飞陈雪莉李伟锋郭庆华郭晓镭王兴军刘霞陆海峰龚岩沈中杰赵丽丽
Owner EAST CHINA UNIV OF SCI & TECH