尿素脱蜡制备低熔点相变蜡的工艺研究  

RESEARCH ON PREPARATION OF PHASE CHANGE PARAFFIN WAX WITH LOW MELTING POINT BY UREA DEWAXING

作　　者：高铭悦 李水泉 张建雨 吴俊岭 Gao Mingyue;Li Shuiquan;Zhang Jianyu;Wu Junling(Shaanxi Fashion Engineering University,Xi’an 712046;Shanghai Joule Wax Co.Ltd.)

机构地区：[1]陕西服装工程学院,西安712046 [2]上海焦耳蜡业有限公司

出　　处：《石油炼制与化工》2020年第11期22-26,共5页Petroleum Processing and Petrochemicals

基　　金：陕西省教育厅科学研究计划资助项目(18JK0932)。

摘　　要：以减一线馏分油(简称减一线油)为原料进行尿素脱蜡工艺研究,得到尿素络合制备低熔点相变蜡的适宜工艺条件:络合温度为25℃、尿素溶液加入量(w)为91%、尿素溶液组成为m(尿素)∶m(异丙醇)∶m(水)=45∶35∶20、反应时间为60 min、洗油量(w)为76%。在此条件下得到的粗蜡收率为28.2%,熔点为29.6℃,正构烷烃质量分数为94.9%,脱蜡油凝点小于-60℃。对该粗蜡进行发汗后处理可以得到相变蜡,其熔点为31℃,焓值为201.9 kJ kg。Using the No.1 vacuum cut as raw material,the technology for preparation of phase change wax with low melting point by urea dewaxing were studied.The results showed that the optimum process conditions was that the complexation temperature was 25℃,the adding amount of urea solution was 91%,the composition of urea solution was m(urea)∶m(isopropyl alcohol)∶m(water)=45∶35∶20,the reaction time was 60 min,the mass ratio of washing solvent to oil was 76%.Under these conditions,the yield of crude wax was 28.2%with a melting point of 29.6℃,the mass fraction of n-alkanes in crude wax was 94.9%,and the condensation point of dewaxed oil was less than-60℃.The phase change wax with a melting point of 31℃,and an enthalpy of 201.9 kJ kg was obtained after perspiring.

关 键 词：尿素脱蜡 相变材料 潜热储存 正构烷烃 相变蜡 减一线油 

分 类 号：TE626.88[石油与天然气工程—油气加工工程]