Novel efficient high-ash coal gasification spiral reactor

Abstract

The invention relates to a novel efficient high-ash coal gasification spiral reactor which comprises an ash collector, a feeding pipe is arranged at the upper part of the ash collector, a high-ash coal inlet and an active substance inlet are formed in the feeding pipe, and a high-temperature and high-pressure water inlet is further formed in the feeding pipe; a spiral reaction tank is arranged inthe ash collector, the upper end of the spiral reaction tank is in butt joint with a discharging port of the feeding pipe, the lower end of the spiral reaction tank extends out of the ash collector oris communicated with an outlet in the ash collector, and the spiral reaction tank is of a spiral sliding way structure with an arc-shaped cross section and a horizontally-formed tank opening. A slagoutlet is formed in the lower end of the ash collector. High-ash coal enters the feeding pipe; active substances are used for modification to improve the activity of the high-ash coal, semicoke with high ash content is thrown out through centrifugal force, enters the ash collector, falls down and is discharged through the slag outlet, a large amount of ash is prevented from being heated, the amount of high-temperature ash is reduced, the heat efficiency is improved, the load of ash cooling equipment is reduced, and cooling is easier.

Description

technical field [0001] The invention relates to the field of high-ash coal gasification, in particular to a novel high-efficiency high-ash coal gasification spiral reactor. Background technique [0002] The production of hydrogen by gasification of high-ash coal is an effective means of efficient utilization of high-ash coal. High-ash coal refers to high-ash coal with an ash content greater than 40% and a moisture content of no more than 20% based on an air-dry basis, especially bituminous coal and anthracite . At present, from a global perspective, high-ash coal fluidized bed coal gasification technology has not yet achieved large-scale promotion and application. my country's fluidized bed coal gasification technology is at the forefront of the world, and fluidized bed gasification technology is in the "trial operation" stage , China has successively established 0.6MPa and 1.0MPa pressurized gasification demonstration devices, of which the 1.0MPa device is currently the wor...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a new high-efficiency high-ash coal gasification spiral reactor to solve the problems in the prior art of low gasification activity of high-ash coal, low gasification thermal efficiency and difficult cooling at high temperature and large amount of ash

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