哈萨克斯坦原油加工中破乳剂的筛选与评定

针对哈萨克斯坦原油加工现状，通过静态电脱盐和动态电脱盐装置模拟现场的实际生产情况，从多种原油破乳剂中筛选出脱盐率较高的SH992和GT922原油破乳剂，并在独山子石化公司炼油厂第三套常减压蒸馏装置上进行工业放大试验。实验室评价及工业放大试验结果表明，在电脱盐温度130℃、破乳剂注入量25mg/L、注水量4％、电场强度800 kV/cm的条件下，SH992和GT922原油破乳剂的脱盐效果较好，脱后原油盐含量均达到中国石油股份有限公司指标（不大于 3mg/L）要求。

SCREENING AND EVALUATION OF DEMULSIFIERS FOR PROCESSING KAZAKHSTAN CRUDE OIL

When processing Kazakhstan crude oil with high salt content, demulsifier was preferred to be used during crude oil desalting. Screening tests of various demulsifiers were carried out by static and dynamic electrical desalting simulated site conditions, and two optimum demulsifiers, SH992 and GT922, were selected for commercial trial. The trial was conducted on the third crude oil distillation unit of Dushanzi Petrochemical Company, and the results showed that using SH992 or GT922 as demulsifier with a dosage of 25mg/L, under the conditions of a water injection amount of 4%, an electrical desalting temperature of 130℃ and an electric intensity of 800KV/cm, the salt content of the desalted crude oil was less than 3 mg/L, meeting the trade target of PetroChina.