Fluidized bed gasification furnace with solid-state aih discharge and its indnstrial application

Abstract

The invention relates to a coal gas preparation facilities used carbon and ash containing compound as the material. It discloses entrained flow gasification furnace with solid state ash discharging and its industrial application. The gasification furnace is upright and has many nozzles. Its fireproof lining is conical surface. Its water spraying ring is set softening jam and two rows of holes. It can be applied to treat the coal with high ash fusing point, high ash content, and high sulfur and the big gasifier.

Description

technical field [0001] The invention relates to a device for preparing coal gas by using carbon-containing and ash-containing compounds as raw materials and its industrial application, in particular to an entrained-flow gasifier. Background technique [0002] Gasification is the main way to efficiently and cleanly utilize carbonaceous compounds. The main product of gasification is coal gas, whose components mainly include CO and H 2 , which can be used to produce NH 3 、CH 3 OH, (CH 3 ) 2 O, liquid fuel, power generation (IGCC), sponge iron and other fields. [0003] Modern large-scale coal gasification industrial installations generally use entrained-bed gasifiers, and the ash in carbon-containing compounds is discharged in a liquid state. Such as the technology disclosed in US Patent 4637823 (GE-Texaco), Chinese Patent 90103807.5 (shell), and patent ZL.98110616.1 held by the applicant. [0004] But objectively, a lot of coal has high ash content and high ash melting ...

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Problems solved by technology

[0004] But objectively, a lot of coal has high ash content and high ash melting point. Liquid slag discharge is required, and the reaction temperature is relatively high, such as 1400-1700°C. At such a high temperature, the refractory materials in the furnace are difficult to resist.

Once the temperature drops, it will cause the clogging of the slag outlet

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