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煤層瓦斯中氫氣和氦氣的氣相色譜分析填充柱
煤層瓦斯中氫氣和氦氣的氣相色譜分析填充柱 詳細(xì)信息：

名稱(chēng)：MS5?填充柱
規(guī)格：3m*5mm，60-80Mesh
*高使用溫度：300°C
編號(hào)：20221207007
應(yīng)用：氫，氧，氮，甲烷，一氧化碳的分離

煤與瓦斯突出是地下采煤作業(yè)中時(shí)有發(fā)生的一種嚴(yán)重工業(yè)災(zāi)害，經(jīng)常造成重大人、財(cái)、物損失。已有各種研究和預(yù)測(cè)方法應(yīng)用于煤與瓦斯突出，取得了一定成果，但仍不能從根本上解決問(wèn)題。煤與瓦斯突出仍時(shí)有發(fā)生，究其原因，長(zhǎng)期以來(lái)認(rèn)為煤與瓦斯突出是源于甲烷作用的結(jié)果，但實(shí)現(xiàn)中防范甲烷并不足以預(yù)測(cè)煤與瓦斯突出。近學(xué)術(shù)界提出，煤與瓦斯突出不僅與甲烷有關(guān)而且與氫氣緊密相關(guān)，氫氣可望作為現(xiàn)場(chǎng)監(jiān)測(cè)和預(yù)報(bào)煤與瓦斯突出的新指標(biāo)。但在生產(chǎn)單位過(guò)去從不專(zhuān)門(mén)分析或檢測(cè)煤層瓦斯中的氫氣，國(guó)內(nèi)外這方面的研究報(bào)道也不多見(jiàn)。

浩瀚色譜（山東）應(yīng)用技術(shù)開(kāi)發(fā)有限公司利用GC-氣相色譜儀熱導(dǎo)檢測(cè)器小熱導(dǎo)池高靈敏度及大進(jìn)樣量的特點(diǎn),建立了煤層中低濃度He、H2的氣相色譜測(cè)定方法,并可同時(shí)測(cè)定常量CH4。對(duì)氣相色譜工作條件進(jìn)行了優(yōu)化,確定的工作條件是:分子篩填充柱,熱導(dǎo)檢測(cè)器(TCD),載氣流速為35~42mL/m in,色譜柱溫度50℃,汽化室溫度50℃,檢測(cè)室溫度100℃,3 mL定量環(huán)。He、H2的線(xiàn)性工作范圍分別為0.95~19μL/L和2.4~48μL/L,RSD(n=8)分別為1.60%和4.54%,方法的檢出限為0.5μL/L。實(shí)驗(yàn)了鋁箔氣袋、橡膠氣球和鹽水瓶不同包裝的樣品進(jìn)樣方式及測(cè)定情況,結(jié)果表明鋁箔氣袋是選擇,鹽水瓶次之,橡膠氣球?qū)怏w有一定的吸附作用。

煤層瓦斯中氫氣和氦氣的氣相色譜分析填充柱測(cè)試譜圖：



Gas chromatographic analysis of hydrogen and helium in coal seam gas packed column

Gas chromatographic analysis of hydrogen and helium in coal seam gas Details of packed column:


Name: MS5 ｜ Filled Column

Specification: 3m * 5mm, 60-80Mesh

*High service temperature: 300 ° C

No.: 20221207007

Application: separation of hydrogen, oxygen, nitrogen, methane and carbon monoxide



Coal and gas outburst is a serious industrial disaster that often occurs in underground coal mining operations, and it often causes significant human, financial and material losses. Various research and prediction methods have been applied to coal and gas outburst, and some achievements have been made, but the problem cannot be solved fundamentally. Coal and gas outburst still happens from time to time. The reason is that for a long time, it is believed that coal and gas outburst is the result of the action of methane, but the realization of methane prevention is not enough to predict coal and gas outburst. Recently, the academic community has proposed that coal and gas outburst is not only related to methane but also closely related to hydrogen. Hydrogen is expected to be a new indicator for on-site monitoring and forecasting of coal and gas outburst. However, in the past, the production units never specially analyzed or detected the hydrogen in the coal seam gas, and there are few research reports in this field at home and abroad.


Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. has established a gas chromatographic method for the determination of low concentrations of He and H2 in coal seams by using the characteristics of GC- gas chromatograph thermal conductivity detector, small thermal conductivity cell, high sensitivity and large sample injection volume, and can simultaneously determine the constant CH4. The working conditions of gas chromatography were optimized, and the best working conditions were determined as follows: molecular sieve packed column, thermal conductivity detector (TCD), carrier gas flow rate of 35~42 mL/min, chromatographic column temperature of 50 ℃, vaporization chamber temperature of 50 ℃, detection chamber temperature of 100 ℃, and 3 mL quantitative ring. The linear working ranges of He and H2 are 0.95~19 respectively μ L/L and 2.4~48 μ L/L, RSD (n=8) are 1.60% and 4.54% respectively, and the detection limit of the method is 0.5 μ L/L。 The sample introduction methods and determination results of aluminum foil air bag, rubber balloon and salt water bottle with different packages were tested. The results showed that aluminum foil air bag was the best choice, followed by salt water bottle, and rubber balloon had a certain adsorption effect on gas.



Gas chromatographic analysis of hydrogen and helium in coal seam gas Filled column test spectrum: