At present, in order to solve the problem of easy scaling of key equipment in the process of oil processing, domestic researchers have conducted a lot of research on scale inhibitors and developed scale inhibitors with strong target and obvious scale inhibition effect; according to their use, they can be classified into FCC slurry scale inhibitor and hydrocracking scale inhibitor.

In response to some problems in the refining process and the addition of one or more fine chemical products as supplementary additives, this type of refining additives have the characteristics of targeted, convenient and flexible, can play a role in improving the catalyst as well as the refining process and equipment.