Increasing the Efficiency of Hydrocarbons С5+ Extraction from the Gas of Condensate Fields by a Low-Temperature Absorption Process

Abstract

Absorption extraction of C₅₊ hydrocarbons from formation gas of gas-condensate fields at the level of temperature of from –25 to –30°C was simulated. The following conditions were recommended during realization: absorbent by physical-chemical characteristics corresponding to hydrocarbons С₉/С₁₀, four theoretical contact stages in the absorber, and partial expenditure of absorbent of 20–30 g/m³. Techniques of low-temperature absorption and low-temperature separation were compared. Parameters were determined that allow developing a scheme of a process with the increased degree of extraction of hydrocarbons С₅₊ (over 99%), which are valuable petrochemical materials.