乙烷氧化裂解制乙烯

Study on Oxidative Cracking of Ethane to Ethene

】乙烷氧化裂解制乙烯与传统的热裂解制乙烯相比，变吸热反应为放热反应，降低了能耗。乙烷氧化裂解制乙烯适宜的反应条件为：温度８００ ～８５０ ℃；原料气停留时间１－０ ～１－５ ｓ ；ｎ（Ｃ２ Ｈ６）／ ｎ（Ｏ２） ＝ ２ ；惰性气体摩尔分数为５０ ％～７０ ％ ；乙烷转化率可达９３－６ ％ ，乙烯选择性为６２－６ ％ ，乙烯收率达５８－６ ％ 。

Compared to thermal cracking of ethane to ethene,the oxidative cracking of ethane to ethene is a more energy efficient process for its exothermic properties.The most suitable reaction conditions of ethane oxidative cracking to ethene is:800～850 ℃,molar ratio 2 of C 2H 6 to O 2,1.0～1.5 s contact time and 50%～70% inert gas in feed gases.A?93.6% conversion of ethane and a 62.6% selectivity to ethene can be obtained under the conditions of temperature,850 ℃, n (C 2H 6)/ n (O 2),2,contact time,1.5 s and 40% He.