Recycling method of fine slag discharged by anthracite coal water slurry gasifier and structure thereof

A gasifier and coal-water-slurry technology, which is applied in the manufacture of combustible gas, petroleum industry, solid fuel, etc., can solve the problems of high production cost, low operation efficiency and low efficiency of anthracite coal-water slurry gasification technology, etc. High load and safe and stable operation, realizing resource utilization and good economic benefits

Active Publication Date: 2014-04-02
GUIZHOU CHITIANHUA GROUP
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Problems solved by technology

Guizhou is rich in anthracite coal production, but due to the high melting point of coal ash, high ash content, poor slurryability and other reasons, the operation efficiency of anthracite coal-water slurry gasification technology is low and the production cost is high
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  • Recycling method of fine slag discharged by anthracite coal water slurry gasifier and structure thereof

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[0011] Example 1: The method of reusing the fine slag discharged from the bituminous coal-water slurry gasifier is to connect the gasification fine slag discharged from the anthracite coal-water slurry gasifier to the flotation feeding barrel and the tailing slime feeding barrel respectively through a pump, and enter the flotation feeding barrel. The clean coal obtained by flotation selected into the barrel is used for blending in the gasifier, and the tail slime is pressed into the barrel to be used as coal slime for blending in coal boilers; the waste water after flotation and pressing is returned to the Grey water storage tank circulation; valves are provided at the inlets of the flotation feeding barrel and the tail slime feeding barrel respectively. The opening conditions of the valves are that the flotation feeding barrel is preferentially selected, and the treatment capacity of the flotation feeding barrel reaches the standard. In the case of closing the corresponding ...

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Abstract

The invention discloses a recycling method of a fine slag discharged by an anthracite coal water slurry gasifier and a structure thereof. The method comprises the following steps: respectively connecting gasified fine slag discharged by the anthracite coal water slurry gasifier and a flotation feeding barrel and a tail slime charging barrel through pumps; carrying out blending combustion of the gasifier by using clean coal entering the flotation feeding barrel obtained in a flotation manner; squeezing the material entering the tail slime charging barrel as coal slime to carry out blending combustion of a coal burning boiler; and pumping the wastewater after flotation and squeezing back to a lye storage tank to recycle. By adopting the recycling method, the gasification efficiency of the coal water slurry is improved, the energy consumption is reduced, high load and safe and stable operation of a coal chemical production line are ensured, and an exemplary role is played for development of an anthracite coal water slurry gasification technology in the field of the coal chemical industry in Guizhou even in China.

Description

technical field [0001] The invention relates to a method for reusing fine slag discharged from an anthracite coal-water slurry gasification furnace and its structure, and belongs to the technical field of technology and transformation of the ash water system of the gasification furnace. Background technique [0002] Coal chemical industry used to use bituminous coal as raw material in the past, and the amount of ash produced was small and the residual carbon content was low, so it was of little significance to use. The existing treatment method is to process it to outsourced units for the manufacture of cement and its concrete mortar preparation. However, due to the constraints of bituminous coal production and production areas, anthracite coal-water slurry gasification has also been forced to start promotion. Guizhou is rich in anthracite coal production, but due to the high melting point of coal ash, high ash content, and poor slurryability, the operation efficiency of an...

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Application Information

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IPC IPC(8): C10L5/00C10J3/72
Inventor 万勇郭端华容大娟王天星周松华胡云凯李灵
Owner GUIZHOU CHITIANHUA GROUP
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