Test Results of Various Demulsifiers for Preparation of High-Sulfur Stable Condensate at Astrakhan Gas Field

This paper describes the search for effective demulsifiers for the destruction of water-oil emulsions at Astrakhan Gas Processing Plant, in order to increase the efficiency of the primary distillation of stable astrakhan gas condensate, which has such features as a wide fractional composition and a significant content of sulfur compounds. Studies of various types of demulsifiers in the production process were carried out, their properties and the effect on the oil-water emulsion were studied under the technological features of the operation of electric desalting and electric dehydration section of the unit of primary distillation of stable gas condensate at Astrakhan Gas Processing Plant.

Research on the Demulsifier and Decalcifying Agent for Crude Oils in Electric Desalting Process

Development of new and efficient demulsifier and decalcifying agent of crude oil has important significance for improving the processing properties of heavy crude oil and increase the yield of light oil. High salt and water contents of crude oil after electric desalting is easy to cause the rapid expansion of volume of water after vaporization, the gas load of distillation tower increases, interfering the smooth operation of distillation tower, A slight impact will influence the quality of products separation, serious implication form the accident of punching Tower caused by the "bumping" of water; increase energy consumption and corrosion of equipment, influence twice processing quality of raw material. In addition, in processing high acid and high calcium crude oil, the presence of naphthenic acid calcium is easy to make the chaos of electrical desaltinger operation. Metal calcium may reduce the activity of catalyst of catalytic cracking and hydrocracking, increases petroleum coke ash in delayed coking, reduces the ductility of oil asphalt, aggravates the corrosion of refinery equipment, influences the safety of production. This requires to optimize the distillation technology of desalting equipment, to develop the evaluation and selection of demulsifier and decalcifying agent and reduce the moisture and salt content of desalted crude oil.