Special binder for preparing coal briquette used for producing gases by using coal dust with volatile components less than or equal to 20%

A volatile and binder technology, applied in the field of coal combustion, can solve problems such as application blanks, and achieve the effects of low cost, high thermal stability, and significant economic and social benefits

Inactive Publication Date: 2013-09-11
三门峡中兴煤炭综合利用研究开发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, according to reliable information in the industry, bituminous coal is used to make briquettes for industrial gas and city gas. Although there are papers, binders and other materials to publicize, the actual application is still blank.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A special binder for making briquette coal for gas-making with volatile content ≤ 20% bituminous coal powder, which is made of the following components in weight percentage: 15% sodium carbonate, 25% sodium silicate, 6% corn starch, polyurethane 2%, refractory clinker 23%, aluminate cement 26%, industrial salt sodium chloride 2%, complexing agent 1%. Among them, the refractory clinker is high alumina bauxite clinker.

Embodiment 2

[0016] A special binder for making briquettes for gas-making from bituminous coal with a volatile content of ≤20%, which is made of the following components in weight percent: 18% sodium carbonate, 27% sodium silicate, 5% corn starch, polyurethane 1%, refractory clinker 25%, aluminate cement 21%, industrial salt sodium chloride 2%, complexing agent 1%. Among them, the refractory clinker is clay clinker.

Embodiment 3

[0018] A special binder for making briquettes for gas-making from bituminous coal with a volatile content of ≤20%, which is made of the following components in weight percent: 20% sodium carbonate, 30% sodium silicate, 4% corn starch, polyurethane 1%, refractory clinker 22%, aluminate cement 20%, industrial salt sodium chloride 1%, complexing agent 2%. Among them, the refractory clinker is high alumina bauxite clinker.

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PUM

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Abstract

The invention discloses a special binder for preparing coal briquette used for producing gases by coal dust with volatile components less than or equal to 20%. The binder is prepared from the following components in percentage by weight: 15-20% of sodium carbonate, 25-30% of sodium silicate, 4-6% of corn starch, 1-2% of polyurethane, 21-27% of fireproof clinker, 20-26% of aluminate cement, 1-2% of industrial salt and 1-2% of a complexing agent. According to the binder, coal dust with volatile components less than or equal to 20% as a raw material, such as meager coal, lean coal and non-caking coal, to prepare the coal briquettes. The coal is low in content of gelatinous layer and small in binding index. The coal briquette used for producing gases is high in thermal stability, and is suitable for Lurgi gasifiers and single section gasifiers to prepare gases. According to the binder, the fixed carbon of the coal briquette is not reduced, and the binder is low in cost, simple and convenient to operate and remarkable in economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of coal combustion, in particular to a special binder for making molded coal for gas production by using bituminous coal dust with a volatile content of ≤20%. Background technique [0002] Briquette is a coal product with a certain strength and shape made of pulverized coal or low-grade coal; binder is a glue that is added to pulverized coal for bonding when pulverized coal is used to make briquettes. The definition standard of bituminous coal and anthracite is based on the difference between high and low volatile content. The volatile content is less than 10%. Bituminous coal is bituminous coal. The degree of coalification of bituminous coal is lower than that of anthracite but higher than that of lignite. It is characterized by a wide range of volatile matter yields. When coking alone, there is no coking to strong coking. There is smoke when burning. The volatile matter of lignite bituminous coal is somewh...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C10L5/10C10L5/12C10L5/14C10J3/02
Inventor韩维国
Owner三门峡中兴煤炭综合利用研究开发中心