ES372007A1 - Method for recovering gasoline and normally gaseous hydrocarbons from the fluid effluent of an hydrocarbon conversion unit. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Method for recovering gasoline and normally gaseous hydrocarbons from the fluid effluent of a hydrocarbon conversion unit, comprising the operations of: (a) fractionating said effluent in a first fractionation zone, into a light, distilled fraction, and a fraction of diesel oil, containing said light, distilled fraction, gasoline and normally gaseous hydrocarbons; (b) separating said light distilled fraction, in a separation zone, in a first gas stream and a first liquid stream; (c) introducing at least a portion of said first gas stream into a first absorption zone maintained under absorption conditions including at least a portion of said first liquid stream as the absorption medium; (d) withdrawing from said first absorption zone a first oil-rich fraction and a second gaseous fraction; (e) passing said gaseous stream into a second absorption zone maintained under absorption conditions that include the presence of at least a portion of said gas-oil fraction, as an absorption medium; (f) withdrawing from said second absorption zone a second stream rich in oil, and a first stream of product comprising C2 and light components; (g) passing said first rich oil to said separation zone of operation (b) and passing said second rich oil to said fractionation zone of operation (a); and (h) introducing the remaining liquid stream from step (b) into a second fractionation zone and recovering from it a second stream of product, normally comprising gaseous hydrocarbons, and a third stream of product comprising gasoline. (Machine-translation by Google Translate, not legally binding)