Pressurized gasifying process of polynary slurry

Abstract

The pressurized gasifying process of polynary slurry includes five steps of preparing polynary slurry, pressurizing to gasify, purifying coarse gas, exhausting cinder and processing grey water. Specifically, the slurry prepared with one or several kinds of carbon and hydrogen containing material through grinding is made to produce intense oxidation with gasifying agent in gasifying furnace, so as to produce coarse gas with CO and H2 as main components; the coarse gas is thrice washed to produce required material gas; the cinder is chilled before exhaust; and the wash produced grey water is processed through concentration, precipitation and filtering to eliminate its ash component before being returned to the system for reuse while its heat is recovered. The said technological process has wide material adaptability, high gasification index, low investment in apparatus and other advantages.

Description

technical field [0001] The invention relates to a method for preparing synthesis gas, reducing gas or fuel gas in the field of energy chemical industry and resource clean utilization, in particular to a multi-component slurry pressurized gasification process. Background technique [0002] As we all know, since the first oil crisis broke out in the 1970s, the partial oxidation of hydrocarbon-containing substances to produce syngas or fuel gas has gradually attracted people's attention. With the unremitting efforts of generations, pressurized gasification technology has been continuously developed and perfected day by day, and has been widely used at present. The wide application of fixed bed, fluidized bed and entrained bed gasification technologies in China provides sufficient engineering experience for the progress of gasification technology. Entrained bed gasification technology is favored by many manufacturers because of its good gasification index, energy saving and hig...

AI Technical Summary

Problems solved by technology

Dry entrained bed gasification such as the Shell process has good technical indicators and has attracted much attention, but the equipment investment is large, and there is no precedent for large-scale use in the synthesis industry; wet slurry pressurized gasification technology, because of its slurry preparation and transportation , metering, and control are convenient, and it is easy to realize high-pressure gasification. The equipment is basically localized, and the investment in production equipment is small. It has been popularized and applied in several domestic production equipment.

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