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:
May. 02, 2017
Filed:
Jul. 27, 2012
Adnan Al-hajji, Dhahran, SA;
Omer Refa Koseoglu, Dhahran, SA;
Hendrik Muller, Dhahran, SA;
Hanadi AL Jawad, Dhahran, SA;
Adnan Al-Hajji, Dhahran, SA;
Omer Refa Koseoglu, Dhahran, SA;
Hendrik Muller, Dhahran, SA;
Hanadi Al Jawad, Dhahran, SA;
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
A process is described for reducing the total acid number of a refinery feedstock. In one embodiment, refinery feedstock containing naphthenic acids is contacted with an effective amount of solid catalyst in the presence of an aqueous caustic base, wherein the caustic base is sodium hydroxide or potassium hydroxide, for a period of time sufficient to neutralize at least a portion of the naphthenic acids in the feedstock. Thereafter, the aqueous phase is separated from the neutralized refinery feedstock. In another embodiment catalyst is pretreated with a caustic base solution and contacted with refinery feedstock to reducing the total acid number.