The heat treatment oil

Pellet mill heat treatment is heated to a certain temperature, then a certain way and speed cooled to a temperature of the process. After heat treatment, make crude paraffin, asphalt and glial changes in the existing form, so that the freezing point and viscosity of the oil change. In the preferred heat treatment conditions can be improved low temperature flow properties of Oil processing. 1995 annual output of 7.9 million tons of crude oil.