CIESC Journal ›› 2010, Vol. 61 ›› Issue (9): 2365-2372.
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LI Li, MENG Xianghai, WANG Gang, XU Chunming, GAO Jinsen
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Published:
李丽,孟祥海,王刚,徐春明,高金森
Abstract:
Reaction performance and product properties of catalytic pyrolysis of HGO (heavy gas oil) and LGO (light gas oil) derived from Canadian synthetic crude oil were investigated in a riser unit.The yield of total light olefins (ethylene, propylene, and butylene) showed a maximum with increasing reaction temperature and catalyst-to-oil mass ratio, decreased with increasing reaction time, and enhanced with increasing steam-to-oil mass ratio.The optimal reaction temperature, catalyst-to-oil mass ratio, reaction time and steam-to-oil mass ratio of catalytic pyrolysis of HGO were 620—640℃, 16, 2 s and 0.5, respectively.Under these optimal reaction conditions, the yields of ethylene, propylene and total light olefins reached 9.0%(mass), 15.8%(mass) and 32.6%(mass), respectively.There were large amounts of aromatics in pyrolysis gasoline, diesel and heavy oil fractions.Gasoline fraction contained above 80%(mass) of aromatics which were mainly toluene and C8 aromatics.Diesel fraction contained above 60%(mass) of aromatics which were mainly single-ring and double-ring aromatics.Heavy oil fraction contained above 70%(mass) of aromatics which were mainly multi-ring aromatics.
Key words: 催化裂解, 瓦斯油, 低碳烯烃, 产品性质
催化裂解,
摘要:
利用提升管催化裂解实验装置研究了加拿大合成原油瓦斯油HGO和LGO的催化裂解反应规律和裂解产品性质。发现总低碳烯烃(乙烯、丙烯和丁烯)产率随反应温度和剂油比的增大存在最大值,随反应时间的延长而减小,随水油比的增大而升高。实验确定了HGO催化裂解的优化反应条件:反应温度620~640℃、剂油比16、反应时间2 s、水油比0.5左右。在此反应条件下,乙烯、丙烯和总低碳烯烃产率分别可达9.0%(质量),15.8%(质量)和32.6%(质量)。催化裂解汽油馏分、柴油馏分和重油馏分含有大量的芳香烃,其中催化裂解汽油馏分总芳香烃含量在80%(质量)以上,主要是甲苯和C8芳香烃;催化裂解柴油馏分总芳香烃含量在60%(质量)以上,主要是单环和双环芳香烃;催化裂解重油馏分总芳香烃含量在70%(质量)以上,主要是多环芳香烃。
关键词: 催化裂解, 瓦斯油, 低碳烯烃, 产品性质
LI Li, MENG Xianghai, WANG Gang, XU Chunming, GAO Jinsen. Reaction performance and product properties of catalytic pyrolysis of naphthenic-base gas oils[J]. CIESC Journal, 2010, 61(9): 2365-2372.
李丽, 孟祥海, 王刚, 徐春明, 高金森. 环烷基瓦斯油催化裂解反应规律及产品性质 [J]. 化工学报, 2010, 61(9): 2365-2372.
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