The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 2017
Filed:
Sep. 04, 2012
Giacomo Fernando Rispoli, Rome, IT;
Claudia Prati, Anzio, IT;
Andrea Amoroso, Rocca Priora, IT;
Paolo Pollesel, San Donato Milanese, IT;
Giacomo Fernando Rispoli, Rome, IT;
Claudia Prati, Anzio, IT;
Andrea Amoroso, Rocca Priora, IT;
Paolo Pollesel, San Donato Milanese, IT;
ENI S.p.A., Rome, IT;
Abstract
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. This method allows the re-use of existing plants, allowing, in particular, the revamping of a refinery containing a system comprising two hydrodesulfurization units, Uand U, into a biorefinery containing a production unit of hydrocarbon fractions from mixtures of a biological origin containing fatty acid esters by means of their hydrodeoxygenation and isomerization, wherein each of the hydrodesulfurization units Uand Ucomprises: a hydrodesulfurization reactor, (A) for the unit Uand (A) for the unit U, wherein said reactor contains a hydrodesulfurization catalyst; one or more heat exchangers between the feedstock and effluent of the reactor; a heating system of the feedstock upstream of the reactor; an acid gas treatment unit downstream of the reactor, containing an absorbent (B) for H2S, said unit being called Tin the unit Uand Tin the unit U, and wherein said method comprises: installing a line L between the units Uand Uwhich connects them in series; installing a recycling line of the product for the unit Uand possibly for the unit U, substituting the hydrodesulfurization catalyst in the reactor Awith a hydrodeoxygenation catalyst; substituting the hydrodesulfurization catalyst in the reactor Awith an isomerization catalyst; installing a y-pass line X of the acid gas treatment unit Tof the unit U; substituting the absorbent (B) in the acid gas treatment unit Twith a specific absorbent for C02 and H2S. The operative configuration obtained with the method, object of the present invention, also leads to a substantial reduction in emissions of pollutants into the atmosphere, with respect to the original operative mode. The invention also relates to the transformation unit of mixtures of a biological origin obtained with said conversion method and particularly hydrodeoxygenation and isomerization processes.