A preparing method of an amino acid demulsifier

Abstract

A preparing method of an amino acid demulsifier is disclosed. The amino acid demulsifier is prepared from oleic acid and pentaethylenehexamine and by heating, dehydrating, cooling, adding a certain amount of an emulsifier and blending. The amino acid demulsifier achieves rapid demulsification of an oil-water separating tank of a delayed coker and significantly reduces the oil content of discharged water. A water body is clear after demulsification. The amino acid demulsifier reduces device corrosion caused by the water body, is free of inorganic ions and has no influence on water body systems at present.

Description

technical field

[0001] The invention belongs to the field of chemical industry, and in particular relates to a preparation method of an amine acid demulsifier. Background technique

[0002] In recent years, due to the deterioration of processed crude oil, the sulfur content and acid content in crude oil have gradually increased. The medium in the oil-water separation tank at the top of the fractionation tower contains a large amount of decomposition to produce mercaptans, phenols, naphthenic acids and other substances. These substances play an emulsifying role. Due to the action of the agent, it is very easy to cause emulsification in the oil-water separation tank, and the nature of the emulsion is stable and difficult to eliminate. Emulsification leads to a substantial increase in the oil content in the discharged sulfur-containing sewage. A large amount of oily sewage will cause difficulties in oil-water separation in the subsequent sewage stripping unit, increase the sewa...