A method for comprehensive utilization of coal gangue
A technology for catalytic gasification of coal gangue and coal, applied in the field of coal gasification, can solve the problems of polluting the surrounding soil and groundwater, affecting the health of residents in the mining area, polluting the atmospheric environment, etc. , the effect of solving environmental pollution problems
Active Publication Date: 2017-01-11
ENN SCI & TECH DEV
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Problems solved by technology
[0004] At present, coal gangue discharges a large amount, but its utilization is weak. It is mainly piled near the wellhead, which not only occupies a large amount of land, but also affects the ecological environment. The gangue leaching water will pollute the surrounding soil and groundwater, and coal gangue contains certain Combustibles can spontaneously ignite under suitable conditions, and emit harmful gases such as sulfur dioxide, nitrogen oxides, carbon oxides, and smoke to pollute the atmosphere and affect the health of residents in mining areas
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] like figure 1 As shown, the embodiment of the present invention provides a method for comprehensive utilization of coal gangue, which includes:
[0030] S1. Supply coal, gasification agent and coal gangue to the gasification equipment;
[0031] S2. Coal, coal gangue and gasification agent undergo gasification reaction in the gasification equipment.
[0032] The coal gangue comprehensive utilization method provided by the embodiment of th...
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Abstract
The invention discloses a method for comprehensive utilization of coal gangue, which relates to the technical field of coal gasification. While effectively comprehensive utilization of coal gangue, slagging in the gasification process can be avoided, continuous and stable operation of the gasification process is ensured, and the gasification process is widened. The scope of application of the coal type of the process. The comprehensive utilization method of coal gangue disclosed in the present invention comprises: supplying coal, gasification agent and coal gangue into gasification equipment; gasification reaction of the coal, coal gangue and gasification agent occurs in the gasification equipment . The comprehensive utilization method of coal gangue disclosed by the invention is suitable for the comprehensive utilization of coal gangue and the process of coal gasification.
Description
technical field [0001] The invention relates to the technical field of coal gasification, in particular to a comprehensive utilization method of coal gangue. Background technique [0002] Coal gasification is one of the main ways to efficiently and cleanly utilize coal. A major problem in the coal gasification process is the slagging of coal ash. Some easily slagging coal types with low content of acidic compounds such as silicon, aluminum and high content of basic chemicals such as potassium, iron and calcium in ash have low ash melting temperature, which leads to easy slagging during gasification, and the slagging of coal ash will It will bring different degrees of impact on the operation, and severe slagging will lead to shutdown of production, which will limit the scope of application of coal types in the coal gasification process. [0003] Coal gangue is a solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low ...
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IPC IPC(8): C10J3/54C10J3/72
Inventor 毛燕东金亚丹李克忠
Owner ENN SCI & TECH DEV