|本期目录/Table of Contents|

[1]李双权,李群生,张正国.劣质原油沸腾床渣油加氢装置换热器防结焦改进措施[J].石化技术与应用,2023,6:461-464.
　LI Shuang-quan,LI Qun-sheng,ZHANG Zheng-guo.Improvement measures for preventing coking in heat exchangers of inferior crude oil fluidized-bed residue hydrogenation unit[J].Petrochemical technology & application,2023,6:461-464.
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劣质原油沸腾床渣油加氢装置换热器防结焦改进措施(PDF)

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

期数:
2023年6期
页码:
461-464
栏目:
出版日期:
2023-11-10

文章信息/Info

Title:
Improvement measures for preventing coking in heat exchangers of inferior crude oil fluidized-bed residue hydrogenation unit
文章编号:
1009-0045（2023）06-0461-04
作者:
李双权1; 李群生1; 张正国2
1.中国石化广州工程有限公司，广东 广州 510620；2.华南理工大学 化学与化工学院，广东 广州 510640
Author(s):
LI Shuang-quan1; LI Qun-sheng1; ZHANG Zheng-guo2
1.Guangzhou Engineering Co Ltd，SINOPEC，Guangzhou 510620，China；2. School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640，China
关键词:
沸腾床渣油加氢装置; 劣质原油; 减压塔; 换热器; 结焦; 在线清洗
Keywords:
fluidized-bed residue hydrogenation unit; inferior crude oil; vacuum tower; heat exchanger; coking; on-line cleaning
分类号:
TQ 031.4；TE 624
DOI:
DOI：10.19909/j.cnki.ISSN1009-0045.2023.06.0461
文献标识码:
B
摘要:
针对某炼化公司260万t/a沸腾床渣油加氢装置减压塔塔底渣油与原油换热的螺旋板换热器结焦问题，在分析换热器渣油和结焦物成分的基础上，提出了换热器防结焦改进措施。结果表明：螺旋板换热器中的渣油主要成分为C元素，结焦物主要成分为芳烃化合物，还有少量的烷烃以及碳粉等无机物；将螺旋板换热器中渣油的流道从小尺寸的内流道调整为大尺寸的外流道，延缓了沥青质、胶质等结焦物的聚合时间，可延长换热器的运行时间；采用2台换热器并联切换操作，通过测量并监控换热器的总传热系数或压降大小，使用重芳烃作为结焦清洗剂实施在线清洗，可实现换热器的长周期运行。
Abstract:
Aiming at the coking problem of the spiral plate heat exchangers of 2.6 Mt/a fluidized-bed residue hydrogenation unit in a certain refining and chemical company，in which the bottom residuum of the vacuum tower was exchanged with crude oil，the improvement measures on heat exchangers anti- coking were put forward on the basis of the analysis of the composition of the residuum and the coke in the above heat exchangers. The results showed that the main component element of residual oil was C， the main composition of coke was the aromatic compounds and a small amount of alkane， carbon powder and other inorganic substances in the spiral plate heat exchanger. The flow path of residual oil in spiral plate heat exchanger was adjusted from small inner flow path to large outflow path， which delayed the polymerization time of asphaltene， colloid and other coke， and prolonged the running period of heat exchanger. Two heat exchangers were switched in parallel to carry out on-line cleaning by measuring and monitoring the total heat transfer coefficient or pressure drop of the heat exchanger and using heavy aromatics as coke cleaning agent，the long operation period of the heat exchanger could be realized.

参考文献/References

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备注/Memo

备注/Memo:
中国石油化工股份有限公司科技基金资助项目（项目编号：320097）
更新日期/Last Update: 2023-11-10