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:
Aug. 27, 2013
Filed:
Jul. 13, 2009
Domenico Sanfilippo, Paullo, IT;
Luca Mairano, Milan, IT;
Alessandro Gianazza, Legnano, IT;
Lino Carlessi, Dalmine, IT;
Domenico Sanfilippo, Paullo, IT;
Luca Mairano, Milan, IT;
Alessandro Gianazza, Legnano, IT;
Lino Carlessi, Dalmine, IT;
SAIPEM S.p.A., San Donato Milanese, IT;
Abstract
Tube-bundle equipment for heat exchange operations at high pressures and temperatures, under conditions of high aggressiveness of the process fluids, comprising a titanium lining () and a series of tubes () consisting of at least one layer of zirconium (), positioned in contact with said fluids, wherein the tube plate on which said tubes are inserted comprises an outer layer (S) of zirconium or an alloy thereof and an underlying layer () of titanium welded to the lining of the equipment. Said equipment is particularly used as a heat exchanger, for example as a stripper, in the high-pressure cycle of urea syntheses processes.