A pressurized gasification process for simultaneously gasifying pulverized coal and coal-water slurry

Abstract

The invention relates to a pressure gasification process for simultaneously gasifying powdered coal and coal water slurry. The pressure gasification process is characterized in that a purpose-made gasification furnace is used, the gasification furnace is provided with a purpose-made powdered coal burner and a start-up burner and capable of simultaneously processing the coal water slurry and the powdered coal; gasification comprises the following steps of carrying out ignition start-up, igniting the powdered coal burner, increasing the temperature and pressure of the gasification furnace and a carbon washing tower, igniting a coal water slurry burner, increasing the pressure inside a gasification chamber, and controlling continuous gasification under a specific reaction condition. The pressure gasification process disclosed by the invention can be used for solving the problems of low effective component, high requirement on the quality of coal fed into the furnace, short life of the coal water slurry burner, short operation time of a single furnace, short life of a refractory brick, low coal slurry concentration and the like of a synthetic gas obtained through the traditional coal water slurry and solving the problems of large investment, complex equipment, high comprehensive energy consumption and the like of the traditional powdered coal gasification process.

Description

technical field [0001] The invention relates to an entrained flow bed and a pressurized coal gasification process, in particular to a pressurized gasification process for simultaneously gasifying pulverized coal and coal-water slurry. Background technique [0002] The leader of coal chemical industry is coal gasification, and the choice of coal gasification process directly determines the benefit of the enterprise. At present, mature high-pressure coal gasification technologies mainly include pulverized coal gasification technology and coal-water slurry technology. [0003] Among them, the coal-water slurry gasification process has the advantages of good stability, high operating efficiency, medium comprehensive energy consumption, simple furnace structure, and simple coal slurry transportation equipment. High, short life of coal water slurry burner, short operation time of single furnace, short life of refractory brick, low concentration of coal slurry, small amount of coa...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide an entrained entrained gasification process capable of gasifying coal-water slurry and pulverized coal at the same time in view of the current situation of the prior art, so as to solve the problem of effective synthesis gas in the existing coal-water slurry gasification process. Low composition, high coal quality requirements, short service life of coal-water slurry burners, short operation time of a single furnace, short service life of refractory bricks, low coal slurry concentration, etc., while solving the problems of large investment and equipment in the existing pulverized coal gasification process Complexity, high comprehensive energy consumption and other issues

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