气相色谱法测定催化裂化气体产物  

Measuring Gas from Catalytic Cracking by Gas Chromatography

作　　者：吴成龙[1] 赵志芳[1] 李凤艳[1] 赵天波[1] 高峻斌[1] 

机构地区：[1]北京石油化工学院化学工程系,北京102617

出　　处：《北京石油化工学院学报》2004年第1期22-26,共5页Journal of Beijing Institute of Petrochemical Technology

摘　　要：利用GC -1 1 0 2、GC -40 0 1和GC -2 3 0 5色谱仪对重油催化裂化的气体产物进行了分析。在改进原分析方法的基础上 ,建立了优化的分析和计算方法。对裂化气进行分析 ,找到了最优升温程序 :5 0℃保留 3 6min ,再以 1 0℃ /min升到 1 0 0℃保留 3 0min。使其中最难分离的异戊烷和顺丁烯的分离度达到了 0 965。对烟气和二氧化碳分析利用 40～ 60目硅胶作为固定相 ,氧气和氮气的分析利用 40～ 60目 5A分子筛作为固定相。使二氧化碳和空气、二氧化碳和杂质、氧气和氮气的分离度分别达到了 2 3 7,1 5 9和1 1 1。对两次平行样的误差分析表明 :其标准偏差介于 0 0 0 3 0～ 0 41 3 4之间。Gas products in catalytic cracking of heavy oils were analyzed using 3 gas chromatographs, GC1102, GC4001 and GC2305. Based on the former analytical method, a more efficient and accurate calculation method was established. Cracking gas was analyzed by using programmed temperature rising from 50 ℃ (maintaining for 36 minutes) to 100 ℃ (maintaining for 30 minutes) at 10 ℃/min, the resolution of iso-pentane and cis-butylene, which were the hardest to separate, reached 0.96. In order to analyze carbon dioxide in flue gas, a 0.25～0.42 mm silica gel packed column was used. And a 0.25～0.42 mm 5A zeolite packed column was used in analyzing oxygen and nitrogen. As the result, the resolutions of carbon dioxide and air, carbon dioxide and impurity, oxygen and nitrogen reached 2.37, 1.59 and 1.11 respectively. Error analysis of two parallel tests showed that the standard deviation was between 0.003 0 and 0.413 4.

关 键 词：气相色谱法 重油 催化 裂化 气体产物 升温程序 分离度 氧气 氮气 

分 类 号：TE624.41[石油与天然气工程—油气加工工程] O657.71[理学—分析化学]