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. 25, 2014
Filed:
Dec. 06, 2011
Jozef Jacobus Titus Smits, Amsterdam, NL;
Sipke Hidde Wadman, Amsterdam, NL;
Jozef Jacobus Titus Smits, Amsterdam, NL;
Sipke Hidde Wadman, Amsterdam, NL;
Shell Oil Cpmpany, Houston, TX (US);
Abstract
The present invention provides a process for removing mercaptans from a gas stream. In the process, a first mercaptan-comprising gas stream comprising at least a mercaptan of the general formula: R—SH, wherein Ris an alkyl group comprising 1 to 4 carbon atoms, and an acid component is contacted with an absorption medium to obtain a mercaptan-depleted gas stream. The absorption medium includes a substituted disulphide and a base. The substituted disulphide is of the general formula R—SS—R, wherein Rand Rare carbon comprising substituents of which the corresponding R—SH and R—SH thiols have a vapor pressure below the vapor pressure of any R—SH thiol, and at least one of Rand Ris an electron withdrawing group.