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
CN104774650AActive Publication Date: 2015-07-15ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2015-07-15

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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.
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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...

Claims

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