Multifunctional coal sample heating oxidizing rule testing platform capable of achieving automatic sampling

Abstract

The invention discloses a multifunctional coal sample heating oxidizing rule testing platform capable of achieving automatic sampling. The multifunctional coal sample heating oxidizing rule testing platform comprises a gas distribution and intake part and an operation testing part. The gas distribution and intake part is used for automatically controlling the flow and proportions of all kinds of gas about to flow into the device and then introducing the mixed gas into the corresponding operation testing part. The operation testing part mainly comprises a heat transfer coal sample tank, a heat insulation tank and the like, and a gravity sensor, a temperature sensor and the like are arranged on each of the heat transfer coal sample tank and the heat insulation tank. When coal sample heating oxidizing rule testing is carried out, the weight, temperature and other states of a coal sample in the coal sample tank can be monitored in real time, meanwhile, a coal sampling device of the device can be utilized for automatically sampling the coal samples at different temperatures, and hazards caused by overflow of high-temperature smoke in the sampling process are avoided. A control cabinet is controlled, automatic gas distribution, automatic testing, automatic sampling and automatic closing can be achieved, and automatic heat radiation can be achieved after an experiment is finished.

Description

technical field [0001] The invention relates to the field of coal sample analysis, in particular to a multifunctional coal sample heating and oxidation law testing platform for automatic sampling. Background technique [0002] my country is one of the few countries in the world that use coal as the main energy source, and it is also a major coal-producing country in the world. Coal accounts for 76% of my country's primary energy consumption and occupies a very important position in the national economy. Spontaneous combustion of coal will cause serious consequences. On the one hand, it threatens the safe production of mines and the physical and mental health of miners; on the other hand, it will also freeze a large amount of coal resources and burn down underground equipment. Therefore, effective methods and means must be adopted to prevent coal spontaneous combustion. However, in order to prevent coal from spontaneous combustion, it is necessary to understand the reasons a...

AI Technical Summary

Problems solved by technology

[0003] At this stage, the testing of coal sample heating and oxidation law is mostly based on the two testing methods of programmed temperature rise and adiabatic oxidation, which are independent devices from each other, and only analyze the heating characteristic curve, heat release law and coal sample oxidation from the macroscopic level. The changes of index gases, etc., have neglected to consider the influence of coal sample stacking structure and molecular structure on its spontaneous combustion from the microscopic level

Moreover, the traditional coal sample heating oxidation test platform is often time-consuming and laborious when selecting coal samples required for microscopic experiments, and it is accompanied by the risk of high-temperature gas overflowing and hurting people.

At the same time, the test results are relatively one-sided due to the fact that the complexity of downhole gas composition is not considered.

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