GC-气相色谱仪测定 乙烯氧化制环氧乙烷原料气中微量二氯乙烷

乙烯氧化制环氧乙烷原料气中微量二氯乙烷，液化石油气，二甲醚，甲缩醛，乙缩醛，乙醇，室内空气，焦炉煤气，炼厂气，天然气，变压器油，多氯联苯，植物油，增塑剂，过氧化物，医疗器械

乙烯氧化制环氧乙烷原料气中微量二氯乙烷
乙烯氧化制环氧乙烷原料气中微量二氯乙烷 详细信息：

乙烯氧化制环氧乙烷过程中,要加入极微量的二氯乙烷作为催化剂的抑制剂,以改善催化剂的选择性。但二氯乙烷通入量过多,会引起催化剂的中毒而失活。因此,准确测定原料气中0.4ppm以下的二氯乙烷含量对乙烯氧化制环氧乙烷过程是非常重要的。

浩瀚色谱（山东）应用技术开发有限公司建立了气相色谱法测定微量二氯乙烷(EDC)的分析方法,在乙烯环氧化反应实验装置上,使用该方法能够对入口气体微量EDC进行在线定量分析。与离线色谱分析相比,质谱法分析速度快,便于对实验装置入口气体EDC进行实时跟踪,同时排除了在离线色谱分析取样过程中对分析结果造成的误差。

乙烯氧化制环氧乙烷原料气中微量二氯乙烷  测试谱图：



Trace amount of ethylene dichloride in feed gas of ethylene oxide to ethylene oxide
Trace amount of ethylene dichloride in feed gas from ethylene oxidation to ethylene oxide Details:

In the process of ethylene oxidation to ethylene oxide, a very small amount of dichloroethane should be added as a catalyst inhibitor to improve the selectivity of the catalyst. However, too much dichloroethane can cause poisoning and deactivation of the catalyst. Therefore, it is very important to accurately measure the content of ethylene dichloride below 0.4ppm in the feed gas for the oxidation of ethylene to ethylene oxide.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established an analytical method for the determination of trace dichloroethane (EDC) by gas chromatography. On the experimental device of ethylene epoxidation reaction, this method can be used for online quantification of trace EDC in inlet gas. analyze. Compared with off-line chromatographic analysis, mass spectrometry has a faster analysis speed, which is convenient for real-time tracking of the EDC of the inlet gas of the experimental device, and at the same time eliminates the error caused by the sampling process of off-line chromatographic analysis.

Test spectrum of trace amount of dichloroethane in feed gas of ethylene oxide to ethylene oxide: