Testing test system and method for spectrum in high temperature stage of spontaneous combustion inflammation process of coal

Abstract

The invention discloses a testing test system for a spectrum in the high temperature stage of the spontaneous combustion inflammation process of coal. The system comprises a constant-temperature furnace, a coal sample tank, a constant-temperature furnace lifting mechanism, an air supply system and a temperature control cabinet; the constant-temperature furnace comprises a constant-temperature furnace body, a constant-temperature furnace cover, a furnace hearth and a heating unit; the coal sample tank is composed of a tank body and a tank cover, and a coal sample tank quartz glass observation hole is formed in the middle of the tank body; the constant-temperature furnace lifting mechanism comprises a support frame, lifters, a motor, shaft steering gears, first transmission shafts, second transmission shafts and lifting bases, and four guiding columns are installed on the support frame; the air supply system comprises an air source, a drying tube, a pressure stabilizing valve, a gas mass flow meter and a preheating tube. The invention further discloses a testing test system for the spectrum in the high temperature stage of the spontaneous combustion inflammation process of the coal. According to the system and method, design is novel and reasonable, implementation, usage and operation are convenient, temperature control is precise, the coal sample molecular structure change condition of the coal in the high-temperature spontaneous combustion condition can be truly reflected, the practicability is high, and usage and popularization are convenient.

Description

technical field [0001] The invention belongs to the technical field of coal spontaneous combustion experiments, and in particular relates to a spectral test system and method for high-temperature stages of coal spontaneous combustion and ignition. Background technique [0002] The most basic influencing factor of coal spontaneous combustion characteristics is the coal molecular structure, so the study of coal molecular structure is of great significance for the ultimate interpretation of coal spontaneous combustion characteristics. For the change of molecular structure in coal during spontaneous combustion of coal, most researchers have quantitatively analyzed the functional groups that affect the reactivity of coal by Fourier transform infrared spectroscopy (FTIR). Although this method can qualitatively and quantitatively reveal the functional groups existing in the coal molecular structure, this method generally selects coal samples at a certain temperature stage during th...

AI Technical Summary

Problems solved by technology

Although this method can qualitatively and quantitatively reveal the functional groups existing in the coal molecular structure, this method generally selects coal samples at a certain temperature stage during the experiment to make a pressed sample, and then uses a Fourier transform infrared spectrometer for analysis experiments , and this method can only analyze the functional groups of the test sample but not its overall molecular structure

Images