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Forming machine system and coal drying, quality improving and hot press molding method

A technology for improving the quality of a forming machine and coal, applied in the field of hot pressing, can solve problems such as gas explosion of the forming machine, and achieve the effect of improving the gas explosion problem

Inactive Publication Date: 2015-06-10
CHINA SHENHUA ENERGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a forming machine system and a coal drying and quality-enhancing hot-pressing forming method to improve the common problem of forming machine gas explosion in the hot-pressing forming process in the prior art

Method used

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  • Forming machine system and coal drying, quality improving and hot press molding method

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Experimental program
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Effect test

Embodiment 1

[0038] Pass 1 ton of raw coal into the upgraded coal system, and separate small particles of raw coal through high-temperature hot flue gas in the airflow dryer. At the same time, control the moisture content of the separated upgraded coal to 8% and the temperature to 85 ℃, and then the upgraded coal is passed into the cyclone separator and coal powder collection box in turn to separate the upgraded coal from the high-temperature hot flue gas. The separated upgraded coal enters the molding machine and is processed into finished coal briquettes. The pressure is 15 MPa, and the explosion rate of the hot press forming by the above method is 29%.

Embodiment 2

[0040] Pass 1 ton of raw coal into the upgrading coal system, and separate small particles of raw coal through high-temperature hot flue gas in the airflow dryer. At the same time, control the moisture content of the separated upgraded coal to 9% and the temperature to 90 ℃, and then the upgraded coal is passed into the cyclone separator and coal powder collection box in turn to separate the upgraded coal from the high-temperature hot flue gas. The separated upgraded coal enters the molding machine and is processed into finished coal briquettes. The pressure is 17MPa, and the explosion rate of the hot press forming by the above method is 32%.

Embodiment 3

[0042] Pass 1 ton of raw coal into the upgraded coal system, and separate small particles of raw coal through high-temperature hot flue gas in the airflow dryer. At the same time, control the moisture content of the separated upgraded coal to 10% and the temperature to 95 ℃, and then the upgraded coal is passed into the cyclone separator and coal powder collection box in turn to separate the upgraded coal from the high-temperature hot flue gas. The separated upgraded coal enters the molding machine and is processed into finished coal briquettes. The pressure is 19MPa, and the explosion rate of the hot press forming by the above method is 35%.

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Abstract

The invention provides a forming machine system and a coal drying, quality improving and hot press molding method. The forming machine system comprises a forming machine feeding box and a forming machine. The forming machine system comprises a negative pressure pumping system communicated with the forming machine feeding box. The negative pressure pumping device communicated with the forming machine feeding box is arranged in the forming machine system, the negative-pressure environment is kept in the forming machine feeding box, the gas in quality-improved coal is exhausted as much as possible during feeding of the forming machine, and the gas explosion problem of the forming machine can be effectively solved.

Description

technical field [0001] The invention relates to the field of hot press forming, in particular to a forming machine system and a hot press forming method for coal drying and quality improvement. Background technique [0002] At present, domestic coal quality-enhancing hot-press forming technology is developing rapidly, especially lignite-enhancing hot-press forming technology has received widespread attention, but there is a common problem of forming machine gas explosion in the hot-press forming process, whether it is steam drum drying or hot smoke Airflow drying. Even if a binder is added to the upgraded coal, the problem of gas explosion will occur during the molding process. [0003] The so-called air explosion means that the molding machine often produces a strong explosion sound like setting off firecrackers during operation. When the gas explodes, the gap between the smooth-running rollers will suddenly increase, the pressure of the hydraulic system will increase ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/06
Inventor 褚良单汝壮王春雨郝世兴刘云肖许天恩曹成龙王振
Owner CHINA SHENHUA ENERGY CO LTD