|本期目录/Table of Contents|

[1]袁峰,许文林.常减压装置极低负荷下的减压渣油循环技改及优化运行[J].石化技术与应用,2022,6:433-437.
 YUAN Feng,XU Wen-lin.Technical innovation and optimium operation of vacuum residue circulation under extremely low processing load of atmospheric and vacuun distillation unit[J].Petrochemical technology & application,2022,6:433-437.
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常减压装置极低负荷下的减压渣油循环技改及优化运行(PDF)

《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]

期数:
2022年6期
页码:
433-437
栏目:
出版日期:
2022-11-10

文章信息/Info

Title:
Technical innovation and optimium operation of vacuum residue circulation under extremely low processing load of atmospheric and vacuun distillation unit
文章编号:
1009-0045(2022)06-0433-05
作者:
袁峰12许文林1
1.扬州大学 化学化工学院, 江苏 扬州 225002;2.中国海油泰州石化有限公司 运行一部, 江苏 泰州 225300
Author(s):
YUAN Feng12 XU Wen-lin1
1. School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225002,China ;2. No.1 Operation Division of Taizhou Petrochemical Co Ltd,CNOOC,Taizhou 225300,China
关键词:
常减压蒸馏装置极低加工负荷能源供应紧缺减压渣油循环停留时间技改优化运行
Keywords:
atmospheric and vacuum distillation unitextremely low processing load energy supply shortage vacuum residue circulation residence time technical innovation optimium operation
分类号:
TE 624.2
DOI:
DOI:10.19909/j.cnki.ISSN1009-0045.2022.06.0433
文献标识码:
B
摘要:
某石化公司通过增大急冷减压渣油循环量和增加减压渣油循环的工艺技改及其优化实践,实现了300万t/a常减压蒸馏装置在加工负荷降低至设计额50%以下的连续生产。结果表明:在减压渣油循环技改及优化实施之后,该装置不仅实现了在50%低加工负荷下的安稳连续生产,而且当减压渣油循环比为35.05%时,其在减压塔的停留时间为12.55 min,满足了不大于原工艺设计的最大停留时间极限(12.8 min)许可要求;当减压渣油循环比从0提高到31.50%~50.00%时,减压渣油的收率下降了0.43~1.07个百分点,其减压渣油的500 ℃馏分体积分数下降了1.00~1.25个百分点,减三线油及减四线油的运动黏度(100 ℃)增幅分别为2.52%,3.76%,从而提高了该装置在极低加工负荷下的原料利用率。
Abstract:
During the special period of energy supply shortage, a petrochemical company realized the continuous safe production of its 3 Mt/a atmospheric and vacuum distillation unit when coping with the challenge of the processing load had to be reduced to less than 50% of the design amount, by taking the countermeasures & optimization practice of increasing the acute cooling circulation volume of vacuum residue and the process technology innovation of setting-up vacuum residue circulation.The results showed that: after the technical innovation and optimization of vacuum residue circulation, this vacuum and atmospheric distillation unit not only achieved the stable and continuous production under 50% low processing load, but also when the vacuum residue circulation ratio was at 35.05%, the corresponding residence time in the vacuum distillation tower was at 12.55 min, which met the licensing requirement of the maximum residence time limit of not greater than 12.8 min of the original process design; When the vacuum residue circulation ratio rose up from 0 to 31.50%-50.00%, the yield of vacuum residue decreased by 0.43-1.07 percentage points, and the volume fraction of 500 ℃ fraction of vacuum residue decreased by 1.00-1.25 percentage points, meanwhile the kinematic viscosity(100 ℃) of the third & fourth sideline vacuum oil increased by 2.52%, 3.76% respectively, thus, the utilization rate of raw materials of this unit under very low processing load was improved.

参考文献/References

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备注/Memo

备注/Memo:
江苏省工业科技支撑计划基金资助项目(项目编号:BE2008100)
更新日期/Last Update: 2022-11-10