In the process of petroleum refining, in order to improve product quality, remove non-ideal components in raw materials, inhibit equipment scaling, prevent equipment corrosion and so on, oil refining additives are usually used to achieve the expected purpose. Refining auxiliaries are a kind of fine chemical products used to solve the problems existing in the refining process. They have the characteristics of strong pertinence, quick effect, flexible and convenient use. At present, the application of refining auxiliaries is quite common, and almost every production unit of every refinery uses refining auxiliaries to varying degrees.