22-03-2018 дата публикации
Номер: US20180079967A1
The invention relates to a method for revamping a conventional refinery of mineral oils into a biorefinery, characterized by a production scheme which allows the treatment of raw materials of a biological origin (vegetable oils, animal fats, exhausted cooking oils) for the production of biofuels, prevalently high-quality biodiesel. 117-. (canceled)1812. A biorefinery , comprising a production unit of a hydrocarbon fraction from a mixture of a biological origin comprising a fatty acid ester by means of hydrodeoxygenation and isomerization of the mixture of the biological origin , wherein the biorefinery is obtained from a refinery comprising a system comprising two hydrodesulfurization units , (U) and (U) , by means of a method for revamping the refinery into the biorefinery ,{'b': 1', '2, 'claim-text': [{'b': 1', '1', '2', '2, 'a hydrodesulfurization reactor, (A) for the unit (U) and (A) for the unit (U), wherein the hydrodesulfurization reactor comprises a hydrodesulftirization catalyst;'}, 'a heat exchanger between a feedstock and effluent of the hydrodesulftirization reactor;', 'a heating system of the feedstock upstream of the hydrodesulfurization reactor; and', {'sub': '2', 'b': 1', '1', '2', '2, 'an acid gas treatment unit downstream of the hydrodesulfurization reactor, comprising an absorbent (B) for HS, (T) in the unit (U) and (T) in the unit (U),'}], 'wherein each of the hydrodesulfurization units (U) and (U) comprises [{'b': 1', '2, 'installing a line L between the units (U) and (U) which connects them in series;'}, {'b': 1', '2, 'installing a recycling line of the product for the unit (U) and optionally for the unit (U),'}, {'b': '1', 'substituting the hydrodesulfurization catalyst in the hydrodesulfurization reactor (A) with a hydrodeoxygenation catalyst;'}, {'b': '2', 'substituting the hydrodesulfurization catalyst in the hydrodesulfurization reactor (A) with an isomerization catalyst; and'}, {'b': 2', '2, 'installing a by-pass line X of the acid gas ...
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