Quench cooler applied to entrained flow gasifier

Abstract

The invention relates to a gasifier in coal chemical industry, and especially relates to a quench cooler of an entrained flow gasifier. The quench cooler is connected to the lower part of the gasifier, and comprises a shell and a quenched water distributor and a gas baffle tube; a firebrick support plate is provided at the upper part of the shell, the firebrick support plate is connected with the quenched water distributor through a flange, the lower part of the quenched water distributor is connected with the gas baffle tube; the quenched water distributor is in a hollow reverse round table shape, an annular cavity is formed between a lateral wall and an inside wall of the reverse round table shape, the lateral wall is communicated with a quenched water inlet arranged at the outboard of the shell of the quench cooler, a plurality of quenched water spray-holes are uniformly arranged on the inside wall of the reverse round table. The quench cooler has a simple structure which is capable of thoroughly solving the problem of slag hole blocking caused by a quenching ring; the gas baffle tube with a reinforcing rib has high deformation resistance which is capable of avoiding the deformation caused by large pressure difference between inside and outside of the quench cooler; the shell uses a material with temperature resistance level lower than that of the gasifier, so that the device cost can be reduced, and the gas can be fully cooled and the gas carrying water drops is avoided through the large liquid holdup and the heat exchange capability.

Description

technical field [0001] The invention relates to the field of gasification furnace equipment in coal chemical industry, in particular to a quencher applied to an entrained bed gasification furnace. Background technique [0002] The entrained bed gasifier has the characteristics of strong adaptability to coal types, high degree of automation, stable and reliable operation, high gasification intensity, high gasification efficiency and simple treatment of three wastes. It is the mainstream gasifier type today. [0003] At present, there are many types of entrained flow gasifiers: according to the gasification space, it can be divided into one-stage furnace and two-stage furnace; according to the different feed materials, it can be divided into coal-water slurry gasifier and dry coal powder gasifier Furnace; According to different slagging methods, it can be divided into liquid slagging and solid slagging. [0004] For these types of entrained-bed gasifiers classified into mains...

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Problems solved by technology

[0008] In order to solve the above-mentioned technical problems, the present invention provides a quencher applied to an entrained-flow gasifier. The quencher with this structure can achieve the following objectives: (1) overcome the slag hole caused by the excessive quenching water flow rate of the existing gasifier The position and degree of cold shock are reasonably designed to solve the problem of blockage; (2) There is no gas in the quenching chamber and no deformation of the downpipe; (3) The cost of the shell is saved

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