摘要
4.0 Mt·a^(-1)渣油加氢装置是云南石化加工高硫劣质原油的核心装置,决定了企业加工原油的品种、数量和效益。装置每次开停工,泄压量较大,造成大量火炬排放,浪费氢气资源,引发火炬燃烧排放风险。从膜分离系统原理、运行参数入手,对一、二系列停开工过程升降压方案进行阶段优化,通过排废氢至膜分离系统和排放高压火炬同时进行,一方面提高开停工升降压效率,提高氢气回收率约45%;另一方面减少排放火炬和回收压力,避免火炬燃烧,降低装置开停工过程对全厂氢气管网、火炬回收气柜系统的影响。
4.0 Mt·a^(-1)residue hydrodesulphurization(RDS)unit is the core unit of Yunnan Petrochemical Company for processing high sulfur and low quality crude oil,which determines the varieties,quantities and benefits of crude oil process.Each time the device start-up and shutdown,the pressure relief is large,resulting in a large number of torch emissions,the waste of hydrogen resources,the risk of torch combustion emission.In this paper,starting from the principle and operation parameters of membrane separation system,the stage optimization of the pressure step-up and step-down scheme in the start-up and shutdown process of two series was carried out.By discharging the waste hydrogen to the membrane separation system and discharging the high pressure torch simultaneously,the pressure step-up and step-down efficiency was improved and the hydrogen recovery rate was increased by about 45%.It reduced the pressure of discharging torch and recycling,avoided burning torch,and reduced the influence of the start-up and shutdown process of the unit on the hydrogen network and torch recovery gas cabinet system of the whole plant.
作者
刘思远
韩坤鹏
LIU Si-yuan;HAN Kun-peng(PetroChina Yunnan Petrochemical Company,Kunming Yunnan 650399,China;Sinopec(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian Liaoning 116045,China)
出处
《当代化工》
CAS
2023年第8期2010-2012,2016,共4页
Contemporary Chemical Industry
关键词
渣油加氢
升压
降压
膜分离
氢气回收
RDS
Pressure step-up
Pressure step-down
Membrane separation
Hydrogen recovery
