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

A gas detector, direct-reading technology, applied in material analysis by observing the influence of chemical indicators, analysis by chemical indicators, and analysis by chemical reaction of materials, etc., can solve the problem of high cost and time-consuming. , unfavorable for all-day, continuous, multi-point monitoring work, etc., to achieve the effect of good accuracy and high sensitivity

Inactive Publication Date: 2003-08-27
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 preparation of indicating matter
  • Portable direct-reading type power-free hydrogen-sulfide gas detector and preparation of indicating matter
  • Portable direct-reading type power-free hydrogen-sulfide gas detector and preparation of indicating matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Pure α-Al 2 o 3 Grind the type ceramics to 80-120 mesh, sieve, burn in a muffle furnace at 600°C for 2 hours, cool down, and bottle for use. The main agent composed of lead nitrate and lead acetate mixed in an equimolar proportion is weighed according to 5% of the total weight of the mixture. Weigh the interface agent barium chloride by 0.5% of the total weight of the mixture. Mix the above-mentioned main agent and interface agent, and add a small amount of distilled water to dissolve it, then pour it into pure α-Al which weighs 94.5% of the total weight of the mixture 2 o 3 Type ceramic powder, stir well, dry, put into airtight container for later use.

Embodiment 2

[0040] Weigh the main agent composed of lead acetate and silver nitrate in an equimolar ratio by 8% of the total weight of the mixture, weigh the interface agent barium acetate by 0.5% of the total weight of the mixture, and weigh pure α- al 2 o 3 type ceramic powder. The preparation method and steps are the same as above.

Embodiment 3

[0042] Weigh the main agent lead acetate by 3% of the total weight of the mixture, weigh the interface agent barium chloride by 0.8% of the total weight of the mixture, and weigh pure α-Al by 96.2% of the total weight of the mixture 2 o 3 type ceramic powder. The preparation method and steps are the same as above.

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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, a detection indicator substance and a preparation method, 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 hazards...

Claims

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Application Information

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