Analyzer for mixed gas containing O2, N2 and H2

An analysis device and gas switching technology, which is applied in the field of analysis devices, can solve problems such as cumbersome operation, large errors, and complex data processing, and achieve good technical effects

Inactive Publication Date: 2008-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the shortcomings of high manufacturing cost, cumbersome operation, complex data processing, large error, and low sensitivity in the prior art. 2 , N 2 and H 2 An analysis device for mixed gases, which has the advantages of low manufacturing cost, convenient operation, good repeatability, high accuracy, and high sensitivity

Method used

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  • Analyzer for mixed gas containing O2, N2 and H2
  • Analyzer for mixed gas containing O2, N2 and H2
  • Analyzer for mixed gas containing O2, N2 and H2

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Embodiment 1

[0024] Analytical instrument: HP-6890, American Agilent Company, equipped with a six-way valve, two ten-way valves, and a TCD detector. Data processing was carried out by HP 2070A chromatographic workstation.

[0025] Chromatographic column: the second chromatographic column is a Porapak N packed column, the third chromatographic column is a 13-x molecule sieve column; the first chromatographic column is a 613-x molecule sieve packed column;

[0026] Chromatographic conditions: temperature program: furnace temperature 50°C, stay for 3 minutes, then rise to 80°C at a rate of 5°C / min and stay for 5.5 minutes; TCD detector, temperature 250°C, carrier gas starts to be nitrogen as carrier gas (for measuring Hydrogen), after 0.7 minutes, hydrogen was used as carrier gas; the column flow rate was 18 ml / min.

[0027] See Table 1 for the running time control program.

[0028] Table 1 Mixed gas analysis running time control switching table

[0029]

[0030] Valve 1 refers to the inj...

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Abstract

The invention relates to a device for analyzing the mixed gas of O2, N2, and H2, for solving the defects of present analysis which needs at least two color spectrums with complex operation and large error, wherein the invention uses one gas switch valve to realize different carrier gas switch, to use nitrogen gas or argon gas as carrier gas when testing hydrogen gas, and use hydrogen gas or argon gas as carrier gas when testing other gas, while the detections of all components are processed on single thermal conductive detector, to analyze the mixed gas with single machine. The invention can be used in the industrial production of color spectrum analyze device.

Description

technical field [0001] The present invention relates to a 2 , N 2 and H 2 Analyzer for mixed gases. Background technique [0002] H is often encountered in petrochemical, coal processing and many production processes 2 , O 2 , N 2 , CO, CO 2 And the separation and analysis of hydrocarbon gas mixture. In this regard domestic and foreign analysts have done a lot of work. There have been many reports on the above-mentioned mixture or mixed gases except hydrocarbons in relevant literature [Shi Mingyu, Li Yuqing, Journal of Nanjing Institute of Chemical Technology, 12(12), 67-70, 1990; Chen Guanrong, Nanlian Technology, 7(4 ) 50~53, 2000; Yang Haiying, Ren Sumei, Lu Wanzhen, Chromatography, 10(1) 1992, 9~13. Wang Yamin, Yang Haiying, Analytical Instruments, 41~46, Issue 4 of 2003. Chen Hejun, Yin Zongling, Analytical Testing Technology and Instruments, 9(1)14-16, 2003] Generally speaking, there are several analysis methods for the above-mentioned permanent mixed gases: ...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/02
Inventor 刘俊涛钟思青刘星陈晓峰
Owner CHINA PETROLEUM & CHEM CORP
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