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

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...

AI Technical Summary

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

Images