塔河原油破乳困难原因分析与对策  

PROBLEM ANALYSIS OF TAHE CRUDE OIL DEMULSIFICATION AND COUNTERMEASURES

作　　者：王振宇[1] 张金河[2] 姜辉[2] 吴振华[2] 沈明欢[1] 于丽[1] 李本高[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化塔河分公司

出　　处：《石油炼制与化工》2017年第1期6-10,共5页Petroleum Processing and Petrochemicals

摘　　要：针对塔河原油电脱盐过程中破乳效果不理想的情况,对2008—2014年塔河原油的性质进行了分析。结果表明,塔河原油性质呈现逐年劣质化的变化趋势,特别是沥青质含量上升、胶质与沥青质的质量比降低、机械杂质含量增加,这些变化是导致其破乳难度加大的主要原因。通过实验研究,将烷基酚醛聚醚A助剂与聚丙烯酸聚醚主剂复配,得到油溶性破乳剂RP-04;将05-M主剂与对含铁颗粒具有润湿作用的R30助剂复配,得到水溶性破乳剂RP-05。在加工塔河原油的某炼油厂3.5 Mt/a电脱盐装置上的工业应用试验结果表明,RP-04和RP-05联合使用时具有较好的破乳效果,在试验稳定期,可以将脱后原油的盐含量从试验前的10.5mgNaCl/L降低到5~6mgNaCl/L,能够实现在高注水和高混合强度条件下的正常破乳,而没有导致电流的突然升高。The properties of Tahe crude oil produced in 2008 2014 were analyzed to investigate the reasons for difficult demulsification. The analysis reveals a inferior trend in crude quality year by year due to increased asphaltene content and the mechanical impurities while decreased mass ratio of resin/asphaltene, which may be the reasons accounting for difficult demulsification of Tahe crude oil. The oil soluble demulsifier RP-04 was developed by mixing polyacrylate polyether, a main agent with alkyl phenolic polyether A, an aid agent. The water soluble demulsifier RP-05 was obtained by compositing the main agent 05-M with aid agent R30 which has the effect that makes the iron particles wetting. The RP-04 and RP-05 were used jointly in a 3.5 Mt/a desahing unit of a refinery. The results show that in the steady operation conditions of high water injection rate and high mixing intensity, the salt content of treated oil decreases from 10.5 mgNaCl/L to 5-6 mgNaCl/L without desahing current jump.

关 键 词：塔河稠油 破乳 脱盐 机械杂质 工业试验 

分 类 号：TE624.1[石油与天然气工程—油气加工工程]