Thermal insulation testing process and apparatus for simulating coal spontaneous combustion procedure

A coal spontaneous combustion and testing method technology, which is applied in the direction of fuel oil testing, thermal development of materials, and chemical analysis using combustion, etc., can solve the problems of heavy testing workload, long testing cycle, difficult to repeat testing, etc., and achieve small amount of testing coal samples , Extensive practicability and short test period

Inactive Publication Date: 2005-03-16
CHINA UNIV OF MINING & TECH
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Problems solved by technology

At present, my country's coal industry mainly uses the chromatographic dynamic oxygen absorption method to determine the spontaneous combustion tendency of coal in terms of testing methods for coal spontaneous combustion tendency. This method is based on the physical adsorption capacity of coal to oxygen at 30 ° C Size, that is, to determine the spontaneous combustion tendency of coal according to the amount of oxygen absorbed. This is an indirect measurement method that cannot reflect the chemical characteristics and process characteristics of coal spontaneous combustion
Because the heat released by coal in the low-temperature oxidation process is very small, it is difficult to carry out direct experiments on the temperature rise characteristics of coal spontaneous combustion oxidation in the laboratory, especially under the

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  • Thermal insulation testing process and apparatus for simulating coal spontaneous combustion procedure
  • Thermal insulation testing process and apparatus for simulating coal spontaneous combustion procedure
  • Thermal insulation testing process and apparatus for simulating coal spontaneous combustion procedure

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specific Embodiment approach

[0014] Its specific implementation is as follows:

[0015] Preheating gas path system implementation mode: dry air or nitrogen enters the copper coil with a length of more than 15m coiled in the air bath temperature control box 8 after adjusting the flow rate through the decompression gauge 3, the pressure stabilization valve 4, and the gas flow controller 6. Air guide pipe 19, the other end of the copper air guide pipe 19 is connected with the air inlet pipe 14, the air inlet pipe 14 enters the bottom position of the insulated coal sample tank 16 through the tank plug 21 close to the center, and the outlet pipe 20 is located at the bottom of the coal sample tank 16. At the position between the upper surface and the bottom of the tank plug 21, the gas coming out of the gas outlet pipe 20 passes through the oxygen concentration monitor 10 to detect the oxygen concentration, and finally is emptied.

[0016] The implementation mode of the heat-insulated coal sample tank: the heat...

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Abstract

It is an adiabatic test method and its apparatus for stimulating the coal autoignition process, which is to locate an adiabatic coal sample jar served as coal low temperature oxidation reaction and to let the gas in the jar firstly go through the copper gas guide pipe in the gas bath temperature control box for preheating and the environment temperature in the box of the reaction always traces the temperature changes in the coal sample jar. It adopts preheat gas path apparatus, gas bath temperature control box, adiabatic coal jar in the temperature control box, temperature control system, which makes the heat generated during the reaction remain in the coal sample to stimulate the coal autoignition process.

Description

1. Technical field [0001] The invention discloses an adiabatic test method and device for simulating the spontaneous combustion process of coal, especially suitable for simulating the spontaneous combustion process of coal, studying the characteristics of spontaneous combustion of coal, and testing and classifying the tendency of spontaneous combustion of coal. 2. Background technology [0002] Coal spontaneous combustion is one of the major disasters in coal mines and coal storage and transportation. The research on coal spontaneous combustion process and its characteristics, especially the test and classification of coal spontaneous combustion tendency is an important basic work for the prevention and control of coal spontaneous combustion. At present, my country's coal industry mainly uses the chromatographic dynamic oxygen absorption method to determine the spontaneous combustion tendency of coal in terms of testing methods for coal spontaneous combustion tendency. This ...

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Application Information

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IPC IPC(8): G01N25/22G01N31/12G01N33/22
Inventor 王德明陆伟李增华周福宝
Owner CHINA UNIV OF MINING & TECH
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