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:
Jul. 31, 2001
Filed:
Nov. 05, 1999
Tsunenori Sakai, Yamaguchi-ken, JP;
Hidetoshi Ono, Yamaguchi-ken, JP;
Jun Mase, Yamaguchi-ken, JP;
Tetsuya Saruwatari, Yamaguchi-ken, JP;
Idemitsu Petrochemical Co., Ltd., Tokyo, JP;
Abstract
In a method of efficiently removing mercury from a liquid hydrocarbon, the liquid hydrocarbon is contacted with water contacted in advance with a crude oil and a sludge contacted in advance with a crude oil. Alternatively, the liquid hydrocarbon is contacted with a substance having ability of ionizing elemental mercury and a sulfur compound having the formula: MM′S, wherein M and M′ are identical or different and are each hydrogen, alkali metal or ammonium group. When the liquid hydrocarbon to be treated contains no dissolved oxygen or contains dissolved oxygen in an amount in equilibrium with a gas containing 8% by volume of oxygen, the increase in the mercury concentration of a liquid hydrocarbon after the removing treatment is effectively prevented.