摘要
研究了采用分壁精馏技术对油田轻烃进行分离生产溶剂油的工艺。利用Aspen流程模拟软件对分离过程进行了建模,研究分离效果及影响因素。考察了理论塔板数、液相分配比、气相分配比等参数对轻烃分离效果及溶剂油产品中硫化物分布的影响规律。结果表明:在95层塔板、塔顶压力88 kPa、回流比4.0、液相分配比0.5、气相分配比1.05的条件下,可以获得满足质量指标要求的6号溶剂油(宽馏程)和120号溶剂油产品。6号溶剂油中硫化物以C_(6)硫醚、噻吩为主,120号溶剂油中硫化物以C_(7)~C_(9)复杂噻吩为主,分壁塔底为C_(10)以上硫化物。采用分壁塔分离技术生产溶剂油产品,装置投资费用约3500万元,轻烃年销售额增加4965万元。
The technology of separating light hydrocarbon from oil field to produce solvent oil by dividing wall distillation is studied.The separation process is modeled by Aspen process simulation software,and the separation effect and influencing factors are studied.The effects of theoretical tray number,liquid phase partition ratio,gas phase partition ratio and other parameters on the separation effect of light hydrocarbons and the distribution of sulfide in solvent oil products are investigated.The results show that under the conditions of 95 trays,overhead pressure of 88 kPa,reflux ratio of 4.0,liquid phase partition ratio of 0.5 and gas phase partition ratio of 1.05,6#solvent oil and 120#solvent oil products meeting the quality requirements could be obtained.The sulfide in 6#solvent oil is mainly C_(6) thioether and thiophene,the sulfide in 120#solvent oil is mainly C_(7)~C_(9) complex thiophene,and at the bottom of the dividing tower is above C_(10) sulfide.Using the separation technology of dividing wall column to produce solvent oil products,the investment cost of the unit is about 35 million yuan,and the annual sales of light hydrocarbons is increased by 49.65 million yuan.
作者
贺松
崔瑞雪
赵德银
陈建兵
He Song;Cui Ruixue;Zhao Deyin;Chen Jianbing(Surface Engineering Research Institute of SINOPEC Northwest China Petroleum Bureau,Urumqi,Xinjiang 830011;SINOPEC Dalian Research Institute of Petroleum and Petrochemicals,Dalian,Liaoning 116045)
出处
《炼油技术与工程》
CAS
2022年第9期12-17,共6页
Petroleum Refinery Engineering
关键词
分壁精馏塔
油田轻烃分离
塔板数
液相分配比
气相分配比
6号溶剂油
120号溶剂油
有机硫分布
dividing wall column
oil field light hydrocarbon separation
number of trays
liquid phase partition ratio
gas phase partition ratio
6#solvent oil
120#solvent oil
organic sulfur distribution
