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Method for preparing carrier catalytic element for gas detection in coal mine

A catalytic element, coal mine gas technology, applied in the direction of material resistance, etc., can solve problems such as unsatisfactory production safety, catalytic element poisoning, casualties, etc.

Inactive Publication Date: 2006-02-15
上海奉泰电子电器元件有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] At present, with the sharp increase of oil consumption and the reduction of oil reserves, global coal mining has reached a new height. Since underground coal mining will produce gas that can explode, if the alarm device is installed during underground operations If it fails, it is very likely that the accumulated gas gas will reach the explosive concentration and an underground gas explosion will occur, resulting in casualties and property losses.
However, due to the fact that there is always a certain concentration of gas in coal mines, the catalytic components installed in the deep wells of coal mines will be poisoned and will fail. Therefore, some existing catalytic components have poor stability and cannot meet the requirements of safe production.

Method used

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  • Method for preparing carrier catalytic element for gas detection in coal mine

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Embodiment Construction

[0005] In the figure, 1 is a stent, and 2 is a platinum wire. Take thin platinum wire 2 (0.02MM in diameter) and wind it on a thin steel core (0.2MM in diameter) for 20 laps, cut it off and soak it in concentrated hydrochloric acid to corrode and remove the thin steel core to obtain platinum wire coil 2, and clean the platinum wire The two ends of the coil 2 are straightened and folded into right angles and welded on the component support 1. After welding, the platinum wire coil is coated with a carrier, which is pasty aluminum nitrate with a concentration of 60%, and then the platinum wire coil 2 is passed through Direct current heating for 20 seconds, the current is 50MA, and the voltage is 2.8V. After the carrier moisture evaporates, the current is increased to 100MA, and heating for 1 minute, so that the aluminum nitrate is completely decomposed. The black element that produces sensitivity is to coat the catalyst on the white element. The catalyst is a mixture of palladium...

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Abstract

This invention relates to a making method of detecting carrier catalysis element coal firedamp, which is characterized by the following: rolling the platinum wire around the thin mill; dipping the dense hydrochloric acid to erase the corrosion of the mill; welding the clean platinum wire on the shelf of the element; brushing the platinum wire with carriers; heating the wire by electricity until white carriers appearing by heating. The black element is produced by brushing white element with catalysis then heated by electricity, which doesn't stop heating until the catalysis sintered. We can obtain a carrier catalysis element by matching the white and activation disposal black elements, which are disposed on the aging disposal platform in the sinter hood.

Description

technical field [0001] The invention relates to a manufacturing method of a carrier catalytic element used for coal mine gas detection. Background technique [0002] At present, with the sharp increase in oil consumption and the reduction of oil reserves, global coal mining has reached a new level. Since underground coal mining will produce gas that can explode, if the alarm device is installed during underground operations If it fails, it is very likely that the accumulated gas gas will reach the explosive concentration and an underground gas explosion will occur, resulting in casualties and property losses. However, due to the fact that there is always a certain concentration of gas in coal mines, the catalytic elements installed in the deep wells of coal mines will be poisoned and will fail. Therefore, some existing catalytic elements have poor stability and cannot meet the requirements of safe production. Contents of the invention [0003] The purpose of the present i...

Claims

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Application Information

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IPC IPC(8): G01N27/16
Inventor 李国辉
Owner 上海奉泰电子电器元件有限公司
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