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:
Feb. 02, 2010
Filed:
May. 28, 2004
Petrus Franciscus Antonius Van Grinsven, Voorschoten, NL;
Wiebe Sjoerd Kijlstra, Amsterdam, NL;
Inge Roos, Amsterdam, NL;
Cornelis Jacobus Smit, Amsterdam, NL;
Petrus Franciscus Antonius Van Grinsven, Voorschoten, NL;
Wiebe Sjoerd Kijlstra, Amsterdam, NL;
Inge Roos, Amsterdam, NL;
Cornelis Jacobus Smit, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
Disclosed is a process for the removal of sulfur from a gas stream containing sulfur dioxide, hydrogen cyanide and hydrogen sulfide. The process includes a hydrogenation step, a hydrolysis step, an ammonia removal step and a hydrogen sulfide removal step. An aqueous alkaline washing liquid is used in the hydrogen sulfide removal step and with the spent sulfide containing washing liquid being regenerated using an oxidation bioreactor that utilizes sulfide oxidizing bacteria such as autotropic aerobic cultures ofand