NOVELTY - Recovering more than 3C hydrocarbon compounds from crude carbon dioxide fluid comprising more than 1C hydrocarbon compounds and at least one non-hydrocarbon heavy impurity, comprises: e.g. feeding dry crude carbon dioxide fluid to a distillation column system for distillation to produce carbon dioxide enriched overhead vapor; and re-boiling the distillation column system by at least partially vaporizing at least a portion of formed more than 3C hydrocarbon-enriched bottoms liquid and at least one intermediate liquid in or taken from the distillation column system by indirect heat exchange.    USE - The process is useful for recovering more than 3C hydrocarbon compounds from crude carbon dioxide fluid.    ADVANTAGE - The process exhibits reduced power consumption, and is simple and economical.    DETAILED DESCRIPTION - Recovering more than 3C hydrocarbon compounds from crude carbon dioxide fluid comprising more than 1C hydrocarbon compounds and at least one non-hydrocarbon heavy impurity, comprises: feeding dry crude carbon dioxide fluid to a distillation column system for distillation to produce carbon dioxide enriched overhead vapor comprising 1-3C hydrocarbon compounds and the non-hydrocarbon heavy impurity, and more than 3C hydrocarbon-enriched bottoms liquid (133); re-boiling the distillation column system by at least partially vaporizing of at least a portion of more than 3C hydrocarbon-enriched bottoms liquid and at least one intermediate liquid in or taken from the distillation column system by indirect heat exchange to provide vapor for the distillation column system; cooling and at least partially condensing carbon dioxide-enriched overhead vapor (118) and/or a compressed carbon dioxide-enriched recycle gas produced from it, by indirect heat exchange to produce at least partially condensed carbon dioxide-enriched gas; and providing at least a portion of the partially condensed carbon dioxide-enriched gas as reflux for the distillation column system.    DESCRIPTION OF DRAWING(S) - The figure shows a flow sheet of recovering more than 3C hydrocarbon compounds comprising a single stage carbon dioxide heat pump cycle and a distillation column having a side reboiler, in which the more than 3C hydrocarbon-enriched bottoms liquid is separated in a stabilization column into a lighter hydrocarbon product and a heavier hydrocarbon product.    Heat exchanger (113)    Carbon dioxide-enriched overhead vapor (118)    After-cooler (124)    More than 3C hydrocarbon-enriched bottoms liquid (133)    Bottom reboiler (134)