加氢裂化装置技术改造及开工总结
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摘要
为了提高重石脑油与喷气燃料收率,并将柴油组分切入尾油,进一步降低柴汽比,增产优质乙烯原料,中国石油四川石化有限责任公司对2. 70 Mt/a加氢裂化装置进行技术改造,采用中国石油化工股份有限公司石油化工科学研究院开发的多产化工原料和喷气燃料的加氢裂化技术并配套加氢精制剂RN-410、加氢裂化催化剂RHC-210与RHC-220组合,产品质量得到明显改善,重石脑油芳烃潜含量达到60%;喷气燃料烟点达到30. 5 mm,比上周期初期喷气燃料烟点高5 mm,喷气燃料收率达到35%,在当前转化率下就达到了设计值;尾油BMCI为11. 45,比上周期初期降低3个单位,因尾油中含有50%以上的柴油组分,降低了尾油立方平均沸点,导致尾油BMCI偏高,当前密度下,如果尾油10%点切到320℃,尾油BMCI可降到8. 3左右。
In order to increase the yield of heavy naphtha and jet fuel,cut the diesel component into the UCO,reduce the diesel to gasoline ratio and increase the production of high-quality feedstock for ethylene production,a 2. 7 MM TPY hydrocracking unit in PetroChina Sichuan Petrochemical Co.,Ltd. has been revamped. In the revamping,the hydrocracking process for maximized production of chemical feedstocks and jet fuels developed by RIPP and associated hydrofining catalyst RN-410 and hydrocracking catalyst RHC-210 and RHC-220 have been applied. As the results,the product quality has been significantly improved,the aromatic potential content of heavy naphtha reaches 60,the smoke point of jet fuel reaches 30. 5 mm which is 5 mm higher than that of jet fuel at SOR of the first cycle. The yield of jet fuel reaches 35% which has reached the design level. BMCI of tail oil is 11. 45,which is 3 units lower than that of earlier operation cycle. As the tail oil contains over 50% diesel component,the average boiling point of tail oil is lowered,which results in higher BMCI. At the present density,the BMCI will reach to about 8. 3 if the cutting temperature of 10% tail oil is 320 ℃.
In order to increase the yield of heavy naphtha and jet fuel,cut the diesel component into the UCO,reduce the diesel to gasoline ratio and increase the production of high-quality feedstock for ethylene production,a 2. 7 MM TPY hydrocracking unit in PetroChina Sichuan Petrochemical Co.,Ltd. has been revamped. In the revamping,the hydrocracking process for maximized production of chemical feedstocks and jet fuels developed by RIPP and associated hydrofining catalyst RN-410 and hydrocracking catalyst RHC-210 and RHC-220 have been applied. As the results,the product quality has been significantly improved,the aromatic potential content of heavy naphtha reaches 60,the smoke point of jet fuel reaches 30. 5 mm which is 5 mm higher than that of jet fuel at SOR of the first cycle. The yield of jet fuel reaches 35% which has reached the design level. BMCI of tail oil is 11. 45,which is 3 units lower than that of earlier operation cycle. As the tail oil contains over 50% diesel component,the average boiling point of tail oil is lowered,which results in higher BMCI. At the present density,the BMCI will reach to about 8. 3 if the cutting temperature of 10% tail oil is 320 ℃.
引文
[1]李大东.加氢处理工艺与工程[M].北京:中石化出版社,2004:612.
[2]崔哲,曾榕辉,吴子明,等.馏程对加氢裂化产品分布及性质的影响[J].石油炼制与化工,2017,48(6):40.
[3]柳伟,杜艳泽,秦波,等. FRIPP新一代加氢裂化催化剂的研发及应用[J].炼油技术与工程,2017,47(12):56.
[4]蒋春林.影响高压加氢裂化尾巴油质量因素分析[J].精细石油化工进展,2010,11(3):19.
[2]崔哲,曾榕辉,吴子明,等.馏程对加氢裂化产品分布及性质的影响[J].石油炼制与化工,2017,48(6):40.
[3]柳伟,杜艳泽,秦波,等. FRIPP新一代加氢裂化催化剂的研发及应用[J].炼油技术与工程,2017,47(12):56.
[4]蒋春林.影响高压加氢裂化尾巴油质量因素分析[J].精细石油化工进展,2010,11(3):19.