摘要
介绍了青岛炼油化工有限公司200 kt/a苯抽提蒸馏装置自2008年首次开工以来在生产运行过程中出现的抽提蒸馏塔塔底重沸器和溶剂回收塔塔底重沸器内漏、抽提蒸馏塔塔釜液泛、原料中苯含量波动大、苯闪蒸罐满罐、贫溶剂酸化等问题及解决措施,并提出了装置大负荷运行的应对措施,即降低溶剂比、提高原料中的C6组分含量、稳定助溶剂含量等,以确保苯抽提蒸馏装置在运转负荷高于设计值时仍能稳定运行,从而保证了苯产品质量和收率的稳定。
Problems and solutions during the operation of the 200 kt/a benzene extractive distillation unit at SINOPEC Qingdao Refining ＆ Chemical Company since startup were summarized, such as leaking in reboilers of extractive distillation column and solvent recovery column, liquid flooding of extractive distillation column kettle, fluctuating of benzene content in feed, flooding of flash tank and acidification of lean solvent. In order to enhance the process capacity of the unit over design value,measures including increase the C6 components in feed,decrease the ratio of solvent to feed and keeping constant cosolvent content were proposed to ensure the unit running in good conditions, thus the yield and quality of benzene could be stable even operating under heavy load.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2011年第7期17-20,共4页
Petroleum Processing and Petrochemicals
关键词
环丁砜
抽提蒸馏
溶剂比
苯
重沸器
sulfolane
extractive distillation
ratio of solvent to feed
benzene
reboiler
