Two-stage oxygen supply dry slag removal pressurized gas flow bed gasification furnace

Abstract

The invention relates to a two-stage oxygen supply dry slag removal pressurized gas flow bed gasification furnace, comprising a cylinder-shaped pressure-bearing case, a gasification chamber arranged in the cylinder-shaped pressure-bearing case, a synthesis gas cooling chamber, a mechanical slag crusher and a slag locking tank; wherein the gasification chamber and the synthesis gas cooling chamberare respectively arranged at the upper part and the lower part in the cylinder-shaped pressure-bearing case, the mechanical slag crusher is arranged below the bottom of the gasification furnace, and the slag locking tank is arranged below the mechanical slag crusher. The invention adopts two-stage oxygen supply temperature control technology and water vapour temperature control technology, and reasonable dry slag removal structure and necessary automatic control means are combined, solid slag removal of China 'double-high' coal large-scale pressurized gas flow bed gasification is realized, and the invention is especially applicable to 'double-high' coals with high ash content (25-27%) and high ash melting point (FT is more than 1400 DEG C), and handing capacity of single day can reach about 2000t/d.

Description

technical field [0001] The invention relates to an entrained-bed gasifier in the technical field of coal gas and coal, especially a kind of "double high" coal type suitable for high ash (25-27%) and high ash melting point (FT>1400°C) in China. Stage oxygen supply dry slag discharge pressurized entrained entrained gasifier. Background technique [0002] Large-scale pressurized entrained-bed coal gasification technology is the core of future clean coal technology, and it is the development of coal-based chemical products (synthetic ammonia, methanol, dimethyl ether, etc.), coal-based polygeneration, IGCC power generation, large-scale hydrogen production, fuel The basis of industrial processes such as batteries is the core technology and leading technology of a coal-based high-efficiency energy system that achieves near-zero emissions of pollutants, and represents the development direction of today's coal gasification technology. Among them, large-scale pressurized entraine...

AI Technical Summary

Problems solved by technology

A large number of "double high" coal types cannot meet the slagging process requirements of the existing liquid slagging pressurized entrained entrained gasification technology represented by Shell and Texaco

Aiming at the problem that the existing liquid slagging pressurized entrained bed gasification technology cannot be applied to a large number of "double high" coal types in my country, the development of a new type of pressurized entrained entrained bed gasification device suitable for my country's "double high" coal types can make up for the existing The liquid slag discharge type pressurized entrained bed gasification device has certain restrictions on "double high" coal types, and the adaptability requirements of pressurized entrained bed gasification technology to coal types should be expanded

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