壳聚糖黄原酸盐用于脱除塔河原油中Ni和V  

Removal of Ni and V From Tahe Crude Oil by Using DTC-CTS

作　　者：李龙[1] 韩林芯[1] 任满年[2] 肖天存[1,3,4] 曹发海[1] 

机构地区：[1]华东理工大学大型工业反应器工程教育部工程研究中心,上海200237 [2]中国石化洛阳分公司,河南洛阳471000 [3]牛津大学化学系 [4]广州博能能源科技有限公司,广东广州510663

出　　处：《石油学报（石油加工）》2013年第2期318-324,共7页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：塔河原油是典型的重质原油,密度大,黏度高,Ni和V含量高。在石油炼制过程中,Ni和V常会进入常减压渣油中,对后续加工过程危害极大。根据配位化学和分子设计原理合成了壳聚糖黄原酸盐脱金属剂(DTC-CTS),利用YS-3型电脱盐仪对塔河原油进行脱金属实验,考察了注水量、破乳剂用量、DTC-CTS脱金属剂用量、电脱盐温度和电场强度对塔河原油Ni和V脱除的影响,得到了最佳实验条件,同时探究了DTC-CTS脱金属的作用机理。由于DTC-CTS中存在—NH2、—CSS—等基团,可与原油中的Ni、V发生螯合反应,生成的螯合物溶于水相。因此,在一定条件下DTC-CTS可有效地脱除原油中的Ni、V。Tahe crude oil is catalogued into heavy crude oil with high density and viscosity, and high contents of Ni and V. In the refining process of crude oil, Ni and V usually get access to heavy distillate oil like atmospheric pressure residual oil and vacuum residual oil, which are very harmful for the crude oil processing. Based on the theory of coordination and molecular design, the demetallization agent DTC-CTS was synthesized and used for demetallization of Tahe crude oil tested in YS-3 electric desalter. The influences of water injection rate, demulsifer dose, DTC-CTS dose, temperature and electric field intensity on demetallization of crude oil were investigated and the optimal test conditions were obtained. Then the action mechanism of DTC-CTS was explored. Because there existed ＆mdash;NH2、＆mdash;CSS＆mdash; groups in DTC-CTS molecule, DTC-CTS could react with Ni and V of crude oil to form a chelate, which could dissolve in water. Under the proper conditions Ni and V were removed from crude oil.

关 键 词：脱金属 镍 钒 壳聚糖 电脱盐 

分 类 号：TE622[石油与天然气工程—油气加工工程]