Method for detecting optical signals of H2S in natural gas and detector thereof

A detection method and optical signal technology, applied in the direction of chemiluminescence/bioluminescence, analysis by chemical reaction of materials, etc., to achieve the effects of strong selectivity, enhanced signal-to-noise ratio, and low cost

Inactive Publication Date: 2014-09-10
中华人民共和国辽宁出入境检验检疫局
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

So far, there is no relevant report on the method and detector for detecting hydrogen sulfide in natural gas by catalytic luminescence on the surface of nanomaterials

Method used

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  • Method for detecting optical signals of H2S in natural gas and detector thereof

Examples

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Effect test

experiment example 1

[0012] Experimental Example 1: Taking natural gas imported from Australia as an experimental sample, the content of hydrogen sulfide measured by the method of Example 1 is 0.715ppm, the detection of "ASTM 4810-06 Standard method for testing hydrogen sulfide in natural gas by coloring length of detection tube" The value is 0.7ppm.

experiment example 2

[0013] Experimental example 2: take Qatar imported natural gas as experimental sample, the content of the hydrogen sulfide measured with the method of embodiment 1 is 0.822ppm, " ASTM 4810-06 uses the standard method of test tube coloring length method to test hydrogen sulfide in natural gas " The detected value is 0.8ppm.

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Abstract

The invention discloses a method for detecting optical signals of H2S in natural gas with simple structure, operation accessibility, use of air as carrier gas, low running cost, good stability and repeatability and high detection efficiency and precision and a detector thereof. A nano catalytic luminous detector is used for detection, the used nano material is a nano composite material of CeO2 and Fe2O3, the CeO2 accounts for 5 to 20 percent of the total mass of the nano composite material, the detection wavelength is 400 to 490 nanometers, the heating temperature range of the nano material is 300 to 450 DEG C, and the air is used as the carrier gas, the flow rate of the carrier gas is 100 to 200ml / min. The used detector is provided with a quartz tube, the axis line of the quartz tube is provided with a sample introduction port and an emptying port, a ceramic tube is placed at the middle part in the quartz tube, a heating wire is arranged in the ceramic tube, a plurality of small quartz tubes are filled between the quartz tube and the ceramic tube, and a nano composite material is coated on the outer surfaces of the small quartz tubes.

Description

Technical field: [0001] The invention relates to a method for detecting hydrogen sulfide content in natural gas and a detector thereof, especially a method with simple structure, easy operation, using air as carrier gas, low operating cost, good stability and reproducibility, and high detection efficiency. and H in natural gas with high precision 2 Optical signal detection method of S and its detector. Background technique: [0002] Raw natural gas is a hydrocarbon-based mixed gas, which contains not only beneficial components for fuel and raw materials, but also useless and toxic components, such as hydrogen sulfide (H 2 S) and other components. The quality index of commercial natural gas consists of high calorific value, H 2 S content, total sulfur content, CO 2 Content and water dew point and other five indicators. h 2 S is a colorless flammable gas with a smell of rotten eggs, specific gravity 1.19, easy to accumulate in low-lying places, and is a highly toxic wast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76
Inventor 刘名扬田成张其芳周忠信王谦
Owner 中华人民共和国辽宁出入境检验检疫局
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