为了增加利润，许多原油炼油厂已改成炼低成本变质原油。由于重质原油的导电率均高于目前炼厂炼制的常规原油。因此，使脱盐设备的耗电量明显增大。本文评价了脱盐设备性能的关键在于原油脱水，着重论述了原油脱盐与脱水之间的关系及高导电率重质原油的耗电问题等。 In order to increase profits, many crude oil refineries have been converted to refining low-cost deterioration of crude oil. As the heavy crude oil conductivity are higher than conventional refineries refinery conventional crude oil. Therefore, the power consumption of desalination equipment is obviously increased. This article evaluates the key of desalination equipment performance is the dehydration of crude oil, focuses on the relationship between desalination and dehydration of crude oil and power consumption of high conductivity and heavy crude oil.