尿素脱蜡制备低熔点相变蜡的工艺研究

›› 2020, Vol. 51 ›› Issue (11): 22-26.

尿素脱蜡制备低熔点相变蜡的工艺研究

高铭悦¹,李水泉¹,张建雨²,吴俊岭²

1. 陕西服装工程学院
2. 上海焦耳蜡业有限公司

收稿日期:2020-04-09 修回日期:2020-05-18 出版日期:2020-11-12 发布日期:2020-11-24
通讯作者: 张建雨 E-mail:2845943008@qq.com
基金资助:
建筑节能新型相变储能材料研究

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

Received:2020-04-09 Revised:2020-05-18 Online:2020-11-12 Published:2020-11-24

摘要/Abstract

摘要： 通以减一线馏分油（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为：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

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

Abstract: 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 60min，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.

Key words: urea dewaxing, phase change material, latent heat storage, n-alkane, phase change wax, vacuum gas oil

高铭悦李水泉张建雨吴俊岭. 尿素脱蜡制备低熔点相变蜡的工艺研究[J]. , 2020, 51(11): 22-26.

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