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U-shaped fixed bed gasification-catalytic reaction device with tar degradation function

A technology of catalytic reaction and gasification reactor, which is applied in the direction of gasification catalyst, gasification process, petroleum industry, etc., can solve the problems of increased product gas purification cost, reduce the cost of post-purification treatment, prolong residence time, eliminate Effect of Particulate Matter and Tar Components

Active Publication Date: 2015-07-15
ZHEJIANG UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a U-shaped fixed-bed gasification-catalytic reaction device with tar degradation function, so as to solve the increase of product gas purification cost caused by the high content of tar and particulate matter in the product gas after waste gasification And other issues

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  • U-shaped fixed bed gasification-catalytic reaction device with tar degradation function

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Embodiment Construction

[0007] Such as figure 1 Shown, the U-shaped fixed-bed gasification-catalytic reaction device with tar degradation function of the present invention mainly comprises downdraft fixed-bed gasification reactor 3, updraft catalytic cracking reactor 10 and cyclone separator 8, and downdraft The suction-type fixed-bed gasification reactor 3 is in the shape of a cylinder, and the outer wall of the cylinder covers the first heating layer 4 and the first heat-insulation layer 5 successively from the wall to the outside. The feeding device 1 has a slagging outlet 7 at the bottom; the upper part has a gasification air distribution outlet 2 arranged tangentially to the wall, and the lower part has a tubular grate 6, which is arranged in parallel with a gap between each other. The gap is composed of steel pipes, a horizontal flue 9 is provided between the slagging outlet 7 and the tubular fire grate 6, and the updraft catalytic cracking reactor 10 is installed close to one side of the downd...

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Abstract

The invention discloses a U-shaped fixed bed gasification-catalytic reaction device with a tar degradation function. The device mainly comprises a downdraft fixed bed gasification reactor, an updraft catalytic cracking reactor and a cyclone separator. The downdraft fixed bed gasification reactor has a feeding apparatus and an air distribution system. Flue gas moves in the shape of U in a furnace, and the whole U-shaped reactor is in a high temperature heating area and is protected by a heat insulation layer to ensure that gasified tar components do not cool and condense in the pipeline along the way, so that the tar components can enter the catalytic cracking reactor in a gaseous form and are fully decomposed in the catalytic reactor. The U-shaped fixed bed gasification-catalytic reaction device provided by the invention solves the problems of product gas purification cost increase and the like caused by excessive content of tar and particulate matters in the product gas after waste gasification.

Description

technical field [0001] The invention relates to a U-shaped fixed-bed gasification-catalysis reaction device, in particular to a U-shaped fixed-bed gasification-catalysis reaction device with tar degradation function, and belongs to the technical field of solid waste energy conversion and clean utilization. Background technique [0002] According to statistics, in 2013, the volume of urban solid waste removal in my country exceeded 170 million tons, and the secondary pollution of dioxins and heavy metals caused by the direct incineration of waste is still a major problem. . The gasification process has become a research hotspot for experts and scholars due to its advantages of high thermal efficiency, cleanliness and low pollution. At present, there are many kinds of domestic waste gasification processes, such as circulating fluidized bed gasification process, fixed bed gasification process, and moving bed gasification process. Furnaces and rotary kilns, etc. The flue gas of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/20C10J3/72C10J3/84
CPCC10J3/20C10J3/721C10J3/84C10J2200/06C10J2300/0946C10J2300/1618
Inventor 黄群星王汝佩严建华池涌陆鹏李晓东蒋旭光马增益王飞金余其陆胜勇
Owner ZHEJIANG UNIV
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