METHOD OF PRODUCING PROPANE FROM ETHANE-PROPANE FRACTION OR HYDROCARBON FRACTIONS AND PROCESSING HYDROCARBON MATERIAL (HYDROCARBON FRACTIONS) Russian patent published in 2012 - IPC C07C9/08 C07C7/04 B01D3/14 B01D3/42 

FIELD: chemistry.

SUBSTANCE: method of processing hydrocarbon material via high-temperature fractionation involves feeding hydrocarbon material (hydrocarbon fractions) into a fractionation column with bottom heater and outlet of commercial-grade high-boiling fraction(s) from the bottom, units for outlet of fractionation gases from the top part and obtaining reflux liquid for reflux of the top of the column, a unit for outlet of calculated commercial-grade excess low-boiling fraction(s). Said method is characterised by that the reflux unit is fitted with a cooler (recuperator, recuperator-evaporator) for further cooling of the reflux liquid with control of its temperature from 12°C to minus 1°C from the initial temperature of reflux liquid before the cooler (recuperator, recuperator-evaporator) to the further cooling process, directly before feeding said reflux liquid for reflux.

EFFECT: invention increases propane extraction ratio, as well as the feed rate of de-ethaniser columns and other high-temperature columns.

5 cl, 6 tbl, 6 dwg