This invention provides a composite type heavy oil demulsifier and its preparation methods. The demulsifier includes two effective constituents. The constituent I is an amino nonionic dendritic polyether and the constituent II is a dendritic ester acid. The structural formula is presented as Formula I and II, respectively. The demulsifier has good abilities in interfacing between oil and water and reducing viscosity. It has good demulsification performance in breaking crude oil emulsion and is useful in heavy crude oil production and petroleum refining.
本发明提供了一种复合型重油破乳剂及其制备方法。该破乳剂包括两种有效成分。成分 I 是
氨基非离子树枝状聚醚,成分 II 是树枝状
酯酸。其结构式分别为式 I 和式 II。该破乳剂在油
水界面和降低粘度方面具有良好的能力。它在破除原油乳状液方面具有良好的破乳化性能,可用于重质原油生产和石油提炼。