Title:
製油所におけるナフテン酸による腐食を防止する方法
Document Type and Number:
Japanese Patent JP4607870
Kind Code:
B2
Abstract:
Thiol-substituted carboxylic acids or their derivatives are used as feed additives for protecting the metal walls of refinery units from corrosion by naphthenic acids . A method for protecting the metal walls of a refinery unit from corrosion by naphthenic acids involves adding a compound of formula (I) to the hydrocarbon feed stream. HS-B-COOR (I) B : 1-18C (preferably 1-4C) saturated hydrocarbylene (linear, branched or cyclic); and R : H, alkali or alkaline earth metal, ammonium, or 1-18C (preferably 1-10C) alkyl, cycloalkyl, aryl, alkylaryl or aralkyl (all optionally containing one or more heteroatoms).
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Inventors:
Yumbro, Francis
Application Number:
JP2006518258A
Publication Date:
January 05, 2011
Filing Date:
June 25, 2004
Export Citation:
Assignee:
Arkema France
International Classes:
C10G7/10; C10G17/00; C10G75/02
Domestic Patent References:
| JP2005537351A | ||||
| JP2003535151A | ||||
| JP6240264A | ||||
| JP8311671A |
Foreign References:
| US5853619 | ||||
| WO1997045503A1 | ||||
| WO1999039025A1 |
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Kenkyo Kanayama
Katsuma Osaki
Mitsuaki Tsubokura
Makoto Ono
Kenkyo Kanayama
Katsuma Osaki
Mitsuaki Tsubokura