Fluidized bed coal gasifying gas-cavity-free distribution plate and fluidized bed coal gasifying assembly

Abstract

The invention discloses a fluidized bed coal gasifying gas-cavity-free distribution plate and a fluidized bed coal gasifying assembly and relates to the technical field of fluidized bed coal gasificatio; the fluidized bed coal gasifying gas-cavity-free distribution plate comprise a body, the body is integrally of a conical structure, and the body comprises a metal plate, a gasifying agent distribution main pipe and a preset number of gasifying agent distribution branch pipes communicated with the gasifying agent distribution main pipe, a fire-resistant insulating layer and a fire-resistant wear-resistant layer are sequentially laid on the inner side of the metal plate, the gasifying agent distribution main pipe and the gasifying agent distribution branch pipes are embedded in the fire-resistant insulating layer and the fire-resistant wear-resistant layer, the gasifying agent distribution branch pipes are horizontally arranged, and outlets of the gasifying agent distribution branch pipes are flush with the inner side surface of the fire-resistant wear-resistant layer. The fluidized bed coal gasifying gas-cavity-free distribution plate also comprise a preset number of gasifying agent inlets connected to the gasifier distribution main pipe. According to the technical scheme, tubular gas distribution is adopted, and compared with the mode that holes are directly formed in a distribution plate, the pressure difference of gas distribution pipes can be greatly increased, so that gas distribution is more uniform.

Description

Technical field: [0001] The invention relates to the technical field of fluidized bed coal gasification, in particular to a fluidized bed coal gasification airless chamber distribution plate and a fluidized bed coal gasification component. Background technique: [0002] Fluidized bed coal gasification has mild conditions, dry feed, and dry ash discharge. It has the advantages of simple structure, low investment, low oxygen consumption, low energy consumption, and low cost of product gas. [0003] Distribution plate is a crucial component in fluidized bed coal gasification, and its structure has an important influence on gas distribution, particle movement, fluidization characteristics, etc. in the fluidized bed. The gasification agent distribution plate used in the existing spouted fluidized bed coal gasification mostly sets the gasification agent inlet in the gas phase cavity below the gasification agent distribution plate, and the gasification agent passes through the gasi...

AI Technical Summary

Problems solved by technology

This type of distribution plate needs to be made of high-temperature-resistant metal materials, and the operating temperature of the gasifier is also limited by the durable temperature of the distribution plate; at the same time, due to the existence of the gasification agent cavity below it, the length of the central jet tube is also increased, which intensifies the corresponding The swaying range at the top of the center jet tube, although support rods can be set on its outer periphery to reduce the sloshing range above the center jet tube, but in actual use, there are still problems such as offset of support rods, deformation of the center tube, severe local wear and even rupture

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