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:
Sep. 06, 2016
Filed:
May. 02, 2013
Stamicarbon B.v., Sittard, NL;
Alexander Aleida Antonius Scheerder, Sittard, NL;
STAMICARBON B.V., Sittard, NL;
Abstract
The present application relates to a method of manufacturing a tube sheet () and heat exchanger assembly for a pool reactor or pool condenser for use in the production of urea from ammonia and carbon dioxide, wherein the method comprises manufacturing of the tube sheet () from a carbon steel material grade and providing said tube sheet () with corrosion protective layers () of an austenitic-ferritic duplex stainless steel grade, wherein the heat exchanger comprises at least one U-shaped tube () of an austenitic-ferritic duplex stainless steel grade, the method further comprises inserting at least two sleeves () of an austenitic-ferritic duplex stainless steel grade through the tube sheet () such that both ends of the sleeve () extend in a direction away from the tube sheet (), the method further comprises connecting the sleeves (), at least the opposing ends thereof, to at least the protective layers () of the tube sheet () and finally, connecting both ends of the at least one U-shaped tube () to the respective sleeves ().