摘要
系统研究了从裂解汽油C8馏分中回收苯乙烯产品的工艺过程,包括溶剂与阻聚剂的评选、抽提蒸馏小试研究及30kt/a裂解汽油苯乙烯抽提蒸馏装置工艺包开发与工业试验。结果表明,以裂解汽油C8馏分为原料经过抽提蒸馏、脱色精制后,苯乙烯色度小于10号,纯度达到99.80%。裂解汽油苯乙烯抽提成套工艺在广东新华粤石化股份有限公司30kt/a苯乙烯抽提装置上进行了首次工业应用,该装置长期稳定运行,各项参数达到设计要求。标定结果表明,产品苯乙烯纯度99.87%,色度小于10号,质量达到国家优级品标准,包括预分馏、苯乙炔加氢在内的全流程苯乙烯回收率为94.3%。
The process for styrene recovery from pygas C8 fraction by extraction-distillation technology was investigated. The selection of solvent, polymerization inhibitor and bench scale test were tested, meanwhile the process design package of 30 kt/a extraction-distillation unit and industrial test were finished. The results show that the color of styrene product after decoloration refining is less than 10, the purity is 99.80%. This technology is successfully applied in extractive-distillation plant of Guan- dong Xinhuayue Petrochem Co. The operation is stable and the operation parameters are all achieved. The industrial results show that the purity of styrene is 99.87%, the platinum-cobalt color is less than 10. The product quality achieves the national superior grade. The total recovery of the process, inclu ding pre-fractionation, phenylacetylene hydrogenation, is 94.3%.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2015年第7期37-42,共6页
Petroleum Processing and Petrochemicals
关键词
裂解汽油
抽提蒸馏
苯乙烯
pyrolysis gasoline
extraction-distillation
styrene
