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大庆原油和冀东原油分离出的蜡(含2%相应的胶质)用降凝剂BEM处理后X射线衍射图的变化和几种原油经降凝剂 BEM处理后蜡晶尺寸的变化及加剂原油经析蜡高峰区的泵剪切后蜡晶尺寸的变化。X射线衍射数据证实降凝剂通过共晶作用改变蜡晶的结构。蜡晶尺寸的变化说明:降凝剂使原油的蜡晶变大,进而降低原油的疑点;剪切玻坏蜡晶的结构是剪切引起原油凝点上升的主要原因。
X-ray diffraction patterns of waxes (containing 2% of the corresponding gums) separated from Daqing crude oil and Jidong crude oil by pour point depressant BEM and changes of wax crystal size The change of wax crystal size after the pump crude oil was cut by pump in the peak area of wax analysis. X-ray diffraction data confirmed that the pour point depressant alters the structure of the wax crystals by eutectic. The change of wax crystal size indicates that the pour point depressant makes the wax crystal of crude oil become larger, thus reducing the suspicion of crude oil. The structure of the broken wax crystal is the main reason that the shear increases the freezing point of crude oil.