METHOD FOR PRODUCTION OF HYDROCARBON FURNACE FUEL Russian patent published in 1995 - IPC

FIELD: oil refining. SUBSTANCE: stable gas condensate is heated and delivered for rectification at a pressure of 2-3 kg/cm², a temperature at the top of 160-170 C and a temperature of the column still of 250-260 C. The resulting fraction of hydrocarbon with a boiling temperature of 250-260 C is taken out from the distilling part of the column in the amount of 2-20 wt. -% and delivered for absorption at 145-155 C. The liquid hydrocarbon fraction is produced by cooling the vapor product from rectification stage to 150-160 C and using it as absorbent at a weight ratio of hydrocarbon fraction to absorbents of (1.3-3.0) to 1. The fraction of vapor-liquid mixture in the column is divided into two flows in a weight relation of 1 to 4-20. The smaller flow is delivered for absorption while the larger one is used for refluxing at the rectification stage. Absorption is carried out at a pressure of 1-1,8 kg/сm². EFFECT: higher efficiency. 9 cl, 1 dwg, 1 tbl