A device for measuring the characteristic parameters of coal oxidation and temperature rise in pressurized coal

Abstract

The invention relates to a coal oxidization temperature increase characteristic parameter measurement apparatus for compressed coal mass and solves the problem of measuring coal oxidization temperature increase characteristic parameters for the compressed coal mass. A heating piece, which is connected to a second temperature programmed controller, is disposed on the outer wall of a body of a reaction kettle. A heat insulation layer is arranged outside the heating piece. A temperature sensor, a gas inlet pipe and a gas outlet pipe are arranged on an upper cover of the reaction kettle. The temperature sensor is connected to a temperature collection module. The gas inlet pipe is connected to a gas preheater which is communicated with a high-pressure gas cylinder and is connected to a first temperature programmed controller. A gas chromatography analyzer is connected to the gas outlet pipe. A displacement sensor and a first pressure meter are installed on the side wall of the body of the reaction kettle. A coal pillar is arranged on the top of a piston in an oil cylinder on the bottom of the reaction kettle. The bottom of the piston is stretched out. The upper part and the lower part of the oil cylinder are respectively communicated with a pressurizing system through a first and a second oil pipelines. The temperature collection module, the gas chromatography analyzer, the displacement sensor, and the second temperature programmed controller are connected to a computer. The apparatus is high in automation degree, has reliable and stable measurement result, is easy to use and has good effects.

Description

technical field [0001] The invention relates to a device for measuring characteristic parameters of coal oxidation and temperature rise in a pressurized coal body. Background technique [0002] Coalfield fire is a major disaster that plagues human beings and the environment. According to statistics, the burning area of ​​China's coalfield fire area has reached 720km 2 , directly burning more than 20 million tons of coal reserves every year, and indirectly destroying 200 million tons of coal resources. According to preliminary estimates, coalfield spontaneous combustion causes economic losses of at least 20 billion yuan per year. Among coalfield fire areas in my country, Xinjiang coalfield fires are the most serious. According to statistics, there are 62 burning coalfields and mining areas in northern my country, of which 35 are located in Xinjiang. Globally, underground coal seam combustion exists to varying degrees in all coal-producing countries. Since the last century,...

AI Technical Summary

Problems solved by technology

Coalfield fires are mostly formed by the oxidation and temperature rise of coal under load conditions. The existing test methods for coal spontaneous combustion characteristics cannot realize the test of coal oxidation and temperature rise characteristics parameters under pressure.

Images