原油催化裂解(COCC)技术试验研究

Pilot Study on Crude Oil Catalytic Cracking(COCC)Technology

为了满足市场对乙烯等化工原料的持续增长需求,以原油为原料最大化生产乙烯、丙烯等低碳烯烃的技术成为了行业研究的重点。特别是原油直接裂解生产乙烯的技术,因其高效、低碳的特点,具有广阔的发展空间。中石化炼化工程(集团)股份有限公司洛阳技术研发中心成功开发出“原油最大化生产化工原料工艺(COCC)”技术。本文讨论在中试试验装置上该技术的反应性能,通过改变反应温度、反应时间、剂油比条件探索原油催化裂解生产低碳烯烃的适宜操作条件。结果表明,在反应温度680℃、反应时间0.80 s、水油比0.5、剂油比为23时,以某某石蜡基原油大于180℃馏分,乙烯单程产率可达到19.15%,丙烯单程产率可达到13.50%,丁烯—和丁二烯单程产率可达到5.53%。

In order to meet the continuously growing market demand for ethylene and other chemical raw materials,the technology of maximizing the production of ethylene,propylene and other low-carbon olefins from crude oil has become the focus of industry research.Especially,the technology of direct cracking of crude oil to produce ethylene has a broad development space because of its high efficiency and low carbon characteristics.The Luoyang Technology R&D Center of Sinopec Refining&Chemical Engineering(Group)Co.,Ltd.has successfully developed the technology of“Crude Oil Cracking Process for Maximized Production of Chemical Raw Materials(COCC)”.The reaction performance of this technology in a pilot plant was discussed,and the suitable operating conditions for the production of low carbon olefins by catalytic cracking of crude oil by changing the reaction temperature,reaction time and agent-oil ratio was explored.The results showed that at a reaction temperature of 680℃,a reaction time of 0.80 s,a water-to-oil ratio of 0.5,and an agent-to-oil ratio of 23,the one-pass yield of ethylene could reach 19.15%,the one-pass yield of propylene could reach 13.50%,and the one-pass yield of butene-and butadiene could reach 5.53%with a so-and-so paraffinic-based crude oil of more than 180℃fraction.