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:
Nov. 16, 2010
Filed:
Aug. 04, 2009
Peter Schoubye, Hørsholm, DK;
Peter Schoubye, Hørsholm, DK;
Haldor Topsøe A/S, Lyngby, DK;
Abstract
Process for the production of concentrated sulphuric acid and oleum from feed gases with up to 70% SO+SO(SO) and a content of HO corresponding to HO/SOmolar ratios up to 1.6, particularly in the range of 0.5 to 1.6 upstream an intermediate sulphuric acid condenser comprising an air recycling loop with water addition. The process of the invention minimizes power consumption of the sulphuric acid plant by reducing the consumption of cooling water and obtaining maximum possible recovery of the heat liberated in the process for production of high pressure steam for power production. Up to 99.95% of the SOin the feed gas can be recovered as typically 98.5-99.5 wt % concentrated sulphuric acid and/or oleum with up to 25 wt % SO.