Comprehensive utilization method of coal water slurry gasified waste residue on Texaco gasifier

A technology of coal water slurry and waste residue, which is applied in the direction of cement production, solid waste management, climate sustainability, etc., can solve the problems that rarely involve the utilization of waste residue, and achieve the effect of large consumption, low modification cost and energy saving
CN101456689AInactive Publication Date: 2009-06-17CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGAN UNIV
Publication Date
2009-06-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a comprehensive utilization method for gasified waste residue of Texaco furnace water coal slurry, which is characterized in that enough fluxing agent is added during preparation and gasification of the water coal slurry; without changing a Texaco gasification process, the alkali coefficient of the generated waste residue is larger than 1.0, and then high carbon-containing granules and silicate glass slag blocks are separated by a gravity separation method; the waste residue is dried during grinding of the silicate glass slag blocks by using the heat value of the high carbon-containing granules; and finally obtaining the high-activity slag powder used for the cement or concrete industry, wherein the specific surface area of the slag powder is larger than 350m<2> / kg, and the moisture content is less than 1 weight percent, so the aim of effectively utilizing the gasified waste residue of the Texaco furnace water coal slurry is achieved. The method has the advantages of simple process, high utilization rate of the waste residue, and good economic benefit.
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Description

technical field

[0001] The invention belongs to the technical field of comprehensive utilization of solid waste in coal chemical industry, and in particular relates to a method for comprehensive utilization of coal-water slurry gasification waste residue of a Texaco furnace. Background technique

[0002] As we all know, the most commonly used method is the Texaco coal-water slurry method to prepare syngas when coal is gasified using internationally advanced technology.

[0003] The coal water slurry gasification technology has been studied in detail and widely applied at home and abroad, and great technological progress has been made. However, the utilization of waste residue after gasification of coal water slurry is seldom involved.

[0004] In order to save energy and reduce emissions, reduce the impact of waste residues after coal-water slurry gasification on environmental pollution, and develop circular economy, the invention relates to the comprehensive utilization of ...

Claims

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