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Briquette for gas producer produced by high volatile bituminous coals and method

A gas generator and bituminous coal technology, which is applied in the production of bulk chemicals, the manufacture of combustible gases, the petroleum industry, etc., can solve the problem that the volatile content of the briquette cannot meet the requirements of the two-stage furnace, the coal used for gasification, and the Technical indicators and other issues to achieve the effect of enhancing thermal strength and thermal stability, increasing ash content, and improving gasification activity

Inactive Publication Date: 2012-12-19
河南中美铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The volatile content of briquettes produced by using anthracite powder and coke powder obviously cannot meet the technical indicators of coal gasification in two-stage gasifiers (GB50195-94)
Chinese patent CN1337449 discloses a method for producing smokeless fuel from bituminous coal (mud), but the addition of up to 200% (based on coal) of inorganic binder greatly increases the ash content of the briquette, which cannot meet the requirements of gasification. Coal requirements; patent CN1412276A provides a method of adding 15-35% bituminous coal to anthracite powder or coke powder to make anthracite briquette, but the briquette can only be used after dry distillation and devolatilization at 500-600°C. The volatile matter content also cannot meet the requirements of the two-stage furnace
Through the search, there is no similar patent report on the use of high volatile bituminous coal to produce gasification briquettes for two-stage furnaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: 800 kilograms of Shenmu high volatile bituminous coal (its coal quality characteristic is moisture 7.4%; Dry basis volatile content 30.1; Dry basis ash content 8.6%; Dry basis fixed carbon 53.9%), 100 kilograms of Jiaozuo anthracite (moisture 3.2%, Dry base volatile matter 7.6%), 40 kilograms of denatured clay, 45 kilograms of sodium humate, 10 kilograms of water, stir in the mixer for 8 minutes, molded on the roller forming machine, and the raw briquettes are gradually warming up from room temperature to 180 degrees Celsius in 1 hour. ℃, and dry at 180℃ for 1 hour to obtain the briquette product.

Embodiment 2

[0013] Embodiment 2: 800 kilograms of Shenmu high-volatile bituminous coal (its coal quality characteristic is moisture 7.4%; dry basis volatile content 30.1; dry basis ash 8.6%; dry basis fixed carbon 53.9%), 100 kilograms of Jiaozuo anthracite (moisture 3.2%, Dry base volatile matter 7.6%), 40 kilograms of denatured clay, 48 kilograms of sodium humate, 15 kilograms of water, stir in the mixer for 8 minutes, molded on the roller forming machine, and the raw briquettes are gradually warming up from room temperature to 180 degrees Celsius in 1 hour. ℃, and dry at 180℃ for 1 hour to obtain the briquette product.

Embodiment 3

[0014] Embodiment 3: 800 kilograms of Shenmu high volatile bituminous coal (its coal quality characteristic is moisture 7.4%; Dry basis volatile content 30.1; Dry basis ash content 8.6%; Dry basis fixed carbon 53.9%), 80 kilograms of Jiaozuo anthracite (moisture 3.2%, Dry base volatile matter 7.6%), 32 kilograms of denatured clay, 32 kilograms of sodium humate, 2 kilograms of water, stirred in the mixer for 8 minutes, formed on the roller forming machine, and the raw briquettes were gradually warming up from room temperature to 180 degrees Celsius in 1 hour. ℃, and dry at 180℃ for 1 hour to obtain the briquette product.

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Abstract

The invention relates to a briquette for a gas producer produced by high volatile bituminous coals and a method. The briquette can meet the requirements of the two-stage fixed bed gas producer for coal quality. The briquette is characterized in that: aiming at the characteristics of high bituminous coal forming elasticity, anthracite coal with the weight 10-20% of that of the bituminous coal is added by weight percentage and is taken as a carbon skeleton, thereby improving the cold strength of the briquette formed by the bituminous coals; modified clay with the weight 4-6% of that of the bituminous coal is added by weight percentage and is taken as a thermal intensifier, and simultaneously a sodium humate binder with the weight 4-6% of that of the bituminous coal is formed by cold pressing, thereby not only improving the cold strength of the briquette, but also not reducing the fixed carbon content of the briquette so as to ensure the heating value and gas production quantity of the briquette; and a small amount of modified clay is added to improve the thermal strength and thermal stability of the briquette, and can be used as a catalyst in the gasification process simultaneously,thereby improving the gasification activity of the briquette.

Description

technical field [0001] The invention belongs to the technical field of coal processing, and in particular relates to a coal gasifier briquette produced from high-volatile bituminous coal and a method thereof capable of meeting the coal quality requirements of high-volatile bituminous coal for a two-stage fixed-bed gasifier. Background technique [0002] The two-stage fixed bed gasifier (hereinafter referred to as the two-stage furnace) has many advantages in the manufacture of industrial gas, and is widely used in glass, ceramics and alumina industries, and has developed rapidly in my country in recent years. The two-stage furnace needs to use non-sticky or weakly sticky bituminous coal with a particle size greater than 20mm and a volatile content greater than 20%, and has high requirements on the thermal stability and mechanical strength of the raw coal. In China, only a few types of coal such as Shenmu long-flame coal and Datong weakly caking coal can meet the process requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/04C10L5/10C10J3/20
CPCY02P20/52
Inventor 谢述新陈辉黄绍胜马名杰刘全润张传祥黄光许张胜利聂玉岭刘庆利董军伟
Owner 河南中美铝业有限公司
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