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Portable direct-reading type power-free hydrogen-sulfide gas detector and indicating matter preparation method

A gas detector and direct-reading technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, analysis by using chemical indicators, and analysis by making materials undergo chemical reactions, can solve time-consuming and high-cost problems. , complex monitoring procedures and other issues, to achieve the effect of high sensitivity and good precision

Inactive Publication Date: 2005-02-02
王宝辉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oil production has the characteristics of dispersal, multi-point, flammability and explosion. The method of sampling with traditional powered sampler and then bringing it back to the laboratory for analysis and determination is relatively accurate and reliable, but monitoring every location in a working day 8-hour concentration value, the monitoring procedure is complex, time-consuming and expensive
Therefore, the traditional detection method is not conducive to the all-day, continuous and multi-point monitoring work with the characteristics of petroleum and chemical industry, especially not suitable for flammable and explosive places

Method used

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  • Portable direct-reading type power-free hydrogen-sulfide gas detector and indicating matter preparation method
  • Portable direct-reading type power-free hydrogen-sulfide gas detector and indicating matter preparation method
  • Portable direct-reading type power-free hydrogen-sulfide gas detector and indicating matter preparation method

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Experimental program
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Embodiment Construction

[0022] The detection component of the badge-shaped, direct-reading, non-powered hydrogen sulfide detector is tubular, and the indicator substance is installed in the tube. The substance is in powder form. When it is placed in a gas environment containing hydrogen sulfide, hydrogen sulfide will The main body of the gas phase diffuses into the tube through the control membrane. When it enters the tube, it reacts rapidly with the thin layer of the substance adsorbed on the carrier surface (the reaction constant is very large, and the special effect and selection are unique). After the reaction, the indicator substance is dark gray. Due to the rapid reaction, a clear, very high-contrast interface is formed between reacted and unreacted species. Because the indicator substance layer is very thin and uniform, the concentration of hydrogen sulfide at the interface is always zero. In this way, there is always a hydrogen sulfide gas concentration difference (that is, driving force) bet...

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Abstract

The testing assembly comprises the glass tube, the indicating material in the glass tube and the diffusion control film on two ends of the glass tube. The indication scale for measuring value constitutes the indication window. The testing assembly and the scale are fixed on the carrier with badge shape. The indicating material comprises main agent, the inter surface modifying addition and ceramics powder in 80-120 mesh. One or several of lead acetate, lead nitrate and silver nitrate constitute the main agent. The intersurface modifying addition is soluble barium salt. The weight of the main agent is 1%-10% of the weight of the admixture. The invention provides the features of powerless, high sensitivity, good accuracy, low cost and convenience.

Description

technical field [0001] The invention relates to a toxic gas monitoring device and a preparation method of a detection indicating substance, belonging to the technical field of labor protection. Background technique [0002] With the increase of social and economic activities, the working environment has the following characteristics: (1) the use of new technology brings new pollution, which increases the type and scope of pollution; (2) the increase of closed or semi-closed working environment brings (3) With the progress of society, workers pay more and more attention to the working environment and require the improvement of the quality of the working environment. Even the small air pollution in the past is now very important. Petroleum industry and petrochemical industry are the main sites of toxic and harmful gas emissions and pollution, which not only endanger the safety of workers, but also pollute the environment. In order to effectively prevent the pollution and haza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01N31/22
Inventor 王宝辉陈新萍
Owner 王宝辉
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