Indirect cooling type moving bed non-slag pure oxygen continuous gasification device and process

Abstract

The invention discloses an indirect cooling type moving bed non-slag pure oxygen continuous gasification device and process. The device comprises gasification equipment, dust removal equipment, wasteheat recovery equipment and cold treatment equipment. The gasification equipment comprises a gasification furnace, the dust removal equipment comprises a cyclone dust collector and a high-temperaturebag type dust collector, the waste heat recovery equipment comprises a waste heat recoverer, and the cold treatment equipment comprises an intercooler; due to the optimized arrangement of the gasification furnace, the gasification efficiency can be further improved, and the ash residue carbon residue amount is reduced; due to the arrangement of the dust removal equipment, dust carried in coal gasoutput from the gasification furnace can be conveniently and thoroughly removed, the service life of the waste heat recoverer is prolonged, water resource waste caused by washing and dust removal is avoided, and meanwhile secondary pollution is avoided; by replacing a conventional water washing tower with the intercooler, non-contact indirect heat exchange of coal gas can be realized, the problemof unorganized emission of VOCs in coal gas washing wastewater is solved, and zero emission of the coal gas wastewater is realized.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to an intercooled moving bed non-slag pure oxygen continuous gasification device and a process. Background technique [0002] At present, with the vigorous development of the coal chemical industry, higher and higher requirements are put forward for indicators such as gasification intensity, gasification efficiency, coal type adaptability, operation continuity and environmental friendliness of coal gasification technology. However, most of the existing coal chemical enterprises and ceramics, glass and smelting enterprises still have relatively serious problems such as incomplete pollution treatment and low treatment efficiency, and the problem is particularly serious in the process of waste gas treatment. Among them, for dust removal operations, existing enterprises Wet washing and dust removal are often used, which will produce a large amount of sediment and improper disp...

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Problems solved by technology

However, most of the existing coal chemical enterprises and ceramics, glass and smelting enterprises still have relatively serious problems such as incomplete pollution treatment and low treatment efficiency, and the problem is particularly serious in the process of waste gas treatment. Among them, for dust removal operations, existing enterprises Wet washing and dust removal are often used, which will produce a large amount of sediment and improper disposal of sediment will cause water pollution on the one hand, and waste of water resources on the other hand, which will aggravate the degree of pollution and damage to the environment; in addition Wet scrubbing and dust removal need to take anti-freezing measures in order not to affect the normal work in cold regions, which increases the workload; while in the existing waste gas treatment process, most heat exchange equipment adopts direct washing and heat exchange, which also increases the discharge of waste water. And produce hidden dangers of secondary pollution to the environment, seriously affecting the treatment effect and efficiency of gas

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