石蜡基润滑油基础油高压加氢装置运行分析及改进建议
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摘要
对某石蜡基润滑油高压加氢装置基础油收率低、减四线重润滑油产品部分指标不合格等问题进行了分析。结果表明:进料中较多不易脱除的大分子氮化物的存在增加了裂解反应,降低了基础油收率;进料中高含量且多以环状形式存在的蜡增加了异构难度,致使降低基础油倾点和浊点困难,并进一步加剧了裂解反应和基础油收率的降低。在原因分析的基础上提出了降低空速、延长减三线油加工时间和降低减四线油进料终馏点等短期改进措施,以及掺炼其它原料、筛选合适原油和采用更高效催化剂级配方案等中长期解决方案。
The high-pressure hydroprocessing unit for production of paraffinic lube base oil in CNOOC is a key unit for company's benefit.The problems of low yield of base oil,and unqualified heavy product in some indicators appeared in operation.This paper analyzes the causes of the problem.The results showed that the presence of large nitrogen compounds in the feed,which are difficult to remove,increases the cracking reaction and reduces the base oil yield.The high content of naphthene in the feed add the difficulty for isomerization,and aggravate the cracking reaction,leading to a low base oil yield,and a higher pour point and turbidity point.Some short-term improvement measures,such as reducing space velocity,processing more VGO from the 3 rd sideline and lowering the final boiling point of VGO from the 4 th sideline were proposed.The measures of using appropriate crude oils,blending feeds and adopting more efficient catalyst grading are suggested for medium and long term production.
The high-pressure hydroprocessing unit for production of paraffinic lube base oil in CNOOC is a key unit for company's benefit.The problems of low yield of base oil,and unqualified heavy product in some indicators appeared in operation.This paper analyzes the causes of the problem.The results showed that the presence of large nitrogen compounds in the feed,which are difficult to remove,increases the cracking reaction and reduces the base oil yield.The high content of naphthene in the feed add the difficulty for isomerization,and aggravate the cracking reaction,leading to a low base oil yield,and a higher pour point and turbidity point.Some short-term improvement measures,such as reducing space velocity,processing more VGO from the 3 rd sideline and lowering the final boiling point of VGO from the 4 th sideline were proposed.The measures of using appropriate crude oils,blending feeds and adopting more efficient catalyst grading are suggested for medium and long term production.
引文
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[8]黄小珠,李鸣,宫卫国,等.加氢异构脱蜡反应温度的影响因素研究[J].石油炼制与化工,2014,45(8):54-57
[9]孟祥彬,胡胜,孙发民.异构脱蜡催化剂及工艺条件对润滑油基础油黏度指数的影响[J].石油炼制与化工,2015,46(3):39-42
[10]王雪梅,李辉,李静,等.异构脱蜡催化剂的性能[C]∥第八届全国工业催化技术及应用年会论文集,2011:298-299
[2]刘洪敖,梁国东.润滑油基础油生产工艺的发展与质量的升级换代[J].石油知识,2017(3):47-48
[3]荣莹.润滑油基础油质量升级对企业经济效益的影响[J].石油化工设计,2011,28(1):59-61
[4]王会东.加氢润滑油基础油光安定性研究进展[J].润滑油,2002,17(4):6-10
[5]黄为民,崔雪梅,卜晓宇.润滑油基础油光安定性研究[J].石化技术与应用,2005,23(1):17-19
[6]陈月珠,周文勇.润滑油基础油中含氮化合物对其氧化安定性的影响[J].石油学报(石油加工),1996,12(2):67-72
[7]李建明,王会东.光稳定剂在加氢裂化润滑油基础油中的应用研究[J].精细石油化工进展,2003,4(4):39-43
[8]黄小珠,李鸣,宫卫国,等.加氢异构脱蜡反应温度的影响因素研究[J].石油炼制与化工,2014,45(8):54-57
[9]孟祥彬,胡胜,孙发民.异构脱蜡催化剂及工艺条件对润滑油基础油黏度指数的影响[J].石油炼制与化工,2015,46(3):39-42
[10]王雪梅,李辉,李静,等.异构脱蜡催化剂的性能[C]∥第八届全国工业催化技术及应用年会论文集,2011:298-299