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:
Oct. 27, 2009
Filed:
Aug. 31, 2006
Giuseppe Bellussi, Piacenza, IT;
Alberto DE Angelis, Legnano-Milano, IT;
Paolo Pollesel, San Donato Milanese-Milano, IT;
Marcello Milli, Como, IT;
Giuseppe Bellussi, Piacenza, IT;
Alberto De Angelis, Legnano-Milano, IT;
Paolo Pollesel, San Donato Milanese-Milano, IT;
Marcello Milli, Como, IT;
ENI S.p.A., Rome, IT;
Abstract
Process for the removal in continuous of hydrogen sulfide from gaseous streams containing it, comprising: a) putting a gas containing HS in contact with an oxidizing acid aqueous solution of ferric nitrate and containing a heteropolyacid having redox properties; b) filtrating and separating the sulfur produced by the redox reaction; c) oxidizing the ferrous nitrate to ferric nitrate with air; d) recycling the solution containing ferric nitrate and heteropolyacid to the oxidation step (a); e) subjecting the gaseous stream leaving the oxidation reactor (c) to washing with the reduced solution; and f) discharging the gaseous stream.