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Catalytic light signal detection method for detecting hydrogen sulfide in gas and detector

A technology of luminescent signal and detection method, which is applied in the direction of chemiluminescence/bioluminescence, and analysis through chemical reaction of materials, to achieve the effects of improved resolution and detection sensitivity, easy operation, and improved luminous efficiency

Inactive Publication Date: 2014-09-24
中华人民共和国辽宁出入境检验检疫局
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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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  • Catalytic light signal detection method for detecting hydrogen sulfide in gas and detector

Examples

Experimental program
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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 0.72ppm, the detection of "ASTM 4810-06 Standard Method for Testing Hydrogen Sulfide in Natural Gas by Coloring Length of Detector 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 0.83ppm, " ASTM 4810-06 uses the standard method of detection tube coloring length method to test hydrogen sulfide in natural gas " The detected value is 0.8ppm.

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Abstract

The present invention discloses a catalytic light signal detection method for detecting hydrogen sulfide in gas and a detector. The detection method has high detection efficiency and accuracy and adopts a nano catalytic light detector for detection. A nano composite material of CeO2 and Al2O3 is adopted, wherein the mass of the CeO2 accounts for 5-20 percent of the total mass of the nano composite material, the detection wavelength is 400-460nm, the heating temperature range of the nano material is 280-400 DEG C, air is used as a carrier gas, and the flow rate of the carrier gas is 50-80ml / min. The detector comprises a quartz bottle, the upper end of the cylindrical quartz bottle is provided with an upper cover, the upper cover is provided with a sample feeding port and an emptying port, and a positive electrode and a negative electrode are fixed on the upper cover; a ceramic tube is arranged in the quartz bottle, a heating wire is arranged in the ceramic tube, and the two ends of the heating wire are respectively connected with the positive electrode and the negative electrode; and a plurality of small quartz tubes are filled between the quartz bottle and the ceramic tube; and the outer surfaces of the small quartz tubes are coated with the nano material.

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. A catalytic luminescence signal detection method for hydrogen sulfide in natural gas with high precision and a detector thereof. 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 plac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76
Inventor 刘名扬徐伟应林初陈信悦杨波
Owner 中华人民共和国辽宁出入境检验检疫局
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