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Coal spontaneous-combustion characteristic determining device based on thermogravimetry

A measuring device, a technology for spontaneous combustion of coal, applied in measuring devices, fuel oil testing, instruments, etc., can solve the problems of inability to obtain coal samples, labor-intensive, time-consuming and labor-intensive, etc., and achieve the effect of reliable test results and high degree of automation

Active Publication Date: 2016-07-27
HENAN POLYTECHNIC UNIV
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Problems solved by technology

If the coal samples are analyzed separately by using the program heating and thermal analyzer, firstly, it will be time-consuming, labor-intensive, and labor-intensive; In contrast, the relationship between the mass change of the coal sample and the gas production / consumption during the heating process cannot be obtained

Method used

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  • Coal spontaneous-combustion characteristic determining device based on thermogravimetry
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  • Coal spontaneous-combustion characteristic determining device based on thermogravimetry

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Embodiment Construction

[0011] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] Depend on Figure 1-Figure 4 Given, the structure of the present invention is that the oxygen high-pressure cylinder 1 is connected to the gas premixing device 9 through the first gas pipeline a, and the nitrogen high-pressure steel cylinder 5 is respectively connected to the first gas pipeline a through the second gas pipeline b. , the gas premixing device 9 is communicated, the gas premixing device is connected to the intake pipe 10 through the first gas pipeline c, the intake pipe is connected to the preheating copper pipe 11, the preheating copper pipe 11 is placed in the lower part of the coal sample tank support, and the preheating copper pipe 11 is placed in the lower part of the coal sample tank support. The bottom of the coal sample tank bracket under the hot copper tube protrudes downwards from the box body of t...

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Abstract

The invention relates to a coal spontaneous-combustion characteristic determining device based on a thermogravimetry.The problem of synchronous measurement of an oxidation temperature rise characteristic curve, mass change quantity and gas production / consumption characteristics of a coal sample under temperature raising programming is effectively solved.High-pressure steel cylinders are connected with a preheating copper pipe through a gas premixing device, the preheating copper pipe is arranged in a coal sample tank support, the coal sample tank support extends out of a box body to be arranged on a balance, a cooling copper pipe is arranged in the top, a coal sample tank is arranged in the coal sample tank support, the preheating copper pipe and the cooling copper pipe are connected with a gas inlet and a gas outlet of the coal sample tank, and the cooling copper pipe is connected to a gas chromatograph.A heating layer is arranged outside the box body, electric heating wires are arranged in the heating layer, a heat preservation layer is arranged outside the heating layer, the electric heating wires are connected with a temperature raising programming controller, a temperature is arranged in the coal sample tank and is connected with a coal sample temperature data acquisition card, and the temperature raising programming controller, the coal sample temperature data acquisition card, the balance and the gas chromatograph are connected with a computer.The coal spontaneous-combustion characteristic determining device is high in automation degree, and test results are reliable.

Description

technical field [0001] The invention relates to a coal spontaneous combustion characteristic measuring device based on thermogravimetry. Background technique [0002] Coal is one of the important energy sources in my country. Since the 1990s, it has maintained more than 70% of my country's energy structure. However, the spontaneous combustion of coal not only causes the loss of coal resources in our country, but also seriously threatens the safe mining of coal resources. Therefore, it is necessary to study and understand the spontaneous combustion characteristics of coal, and construct the relationship between various parameters in the process of coal spontaneous combustion to serve the protection and mining of coal resources in my country. At present, the main equipment used in the laboratory to study the spontaneous combustion characteristics of coal are: adiabatic oxidation device, programmed temperature rise device, Fourier transform infrared spectrometer and thermal an...

Claims

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Application Information

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IPC IPC(8): G01N33/22
CPCG01N33/222
Inventor 徐永亮王兰云王少坤褚廷湘余明高宋志鹏位亚南荆国松
Owner HENAN POLYTECHNIC UNIV
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