Methane conversion oven device of gas chromatograph

Abstract

The invention discloses a methane conversion oven device of a gas chromatograph, belonging to the technical field of analytical and testing instruments. The methane conversion oven device is characterized in that a cylindrical metal heating block is fixed on a fixed plate in a stainless steel heat preservation barrel; two stainless steel heating rods and a platinum thermistor are arranged in the heating block; leads penetrate out of the right lead outlet of the heat preservation barrel; the leads of the two stainless steel heating rods are connected in parallel; a conversion body which is welded with a hydrogenation pipe which is wound with ten small turns and is provided with a nickel catalyst is arranged in a conversion body hole of the heating block from the lower surface of the heat preservation barrel; the hydrogenation pipe penetrates out from a left lead outlet through an assembly hole in the fixed plate of the heat preservation barrel; a stainless steel flat gasket is arranged on the upper head of the conversion body in a penetrated manner and is screwed tightly on a heating block with a stainless steel nut; the preservation barrel is filled with heat preservation cotton; the upper and lower ends of the heat preservation barrel are covered tightly through self-tightening stainless steel heat preservation barrel covers with assembly holes; and two ends of the conversion body extend out through the assembly holes. By adopting the methane conversion oven device, the problems of a methane conversion oven device of the gas chromatograph in the prior art that the structure is complex and unreasonable; assembly and maintenance are inconvenient; gas is easily leaked; and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of analysis and test instruments, and relates to a structural design of a gas chromatograph methane conversion furnace. Background technique [0002] Gas chromatograph analysis of CO, CO 2 When the hydrogen flame detector has no signal, it is usually detected by a thermal conductivity cell detector, but trace amounts of CO, CO 2 At this time, due to the low sensitivity of the thermal conductivity cell detector, it cannot be detected, so the trace amount of CO, CO 2 After being converted into methane, it is detected by a highly sensitive hydrogen flame detector. Therefore, the performance of the methane reformer device directly affects the conversion rate and the accuracy of the analysis results. The methane reformer currently in use has a complex and unreasonable structure. It is difficult to install and replace the reformer tube, and it is prone to air leakage, which leads to poor accuracy of the analysi...

AI Technical Summary

Problems solved by technology

[0004] Beneficial effects of the present invention: solve the problems of complex and unreasonable structure, inconvenient installation and maintenance, and easy air leakage of the gas chromatograph methane reformer device, improve conversion efficiency and accuracy, simple process, simple installation, and no need to disassemble Nickel catalyst can be replaced directly

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