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1. WO1996002461 - METHODS FOR RECOVERING SODIUM SULFIDES FROM A SULFUR SCAVENGING REACTION

Publication Number WO/1996/002461
Publication Date 01.02.1996
International Application No. PCT/US1995/008399
International Filing Date 07.07.1995
Chapter 2 Demand Filed 16.02.1996
IPC
C01B 17/22 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
17Sulfur; Compounds thereof
22Alkali metal sulfides or polysulfides
CPC
C01B 17/22
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
17Sulfur; Compounds thereof
22Alkali metal sulfides or polysulfides
C07C 211/09
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
211Compounds containing amino groups bound to a carbon skeleton
01having amino groups bound to acyclic carbon atoms
02of an acyclic saturated carbon skeleton
09Diamines
C07D 251/04
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
251Heterocyclic compounds containing 1,3,5-triazine rings
02not condensed with other rings
04having no double bonds between ring members or between ring members and non-ring members
Applicants
  • QUAKER CHEMICAL CORPORATION [US/US]; 300 Delaware Avenue Wilmington, DE 19899, US
Inventors
  • TRAUFFER, Edward, A.; US
Agents
  • SCHWARZE, William, W. ; Panitch Schwarze Jacobs & Nadel, P.C. 36th floor 1601 Market Street Philadelphia, PA 19103, US
Priority Data
277,39519.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHODS FOR RECOVERING SODIUM SULFIDES FROM A SULFUR SCAVENGING REACTION
(FR) PROCEDE DE RECUPERATION DE SULFURES DE SODIUM LORS D'UNE REACTION D'ELIMINATION DU SOUFRE
Abstract
(EN)
A method is provided for the regeneration of a scavenging compound that has been reacted with hydrogen sulfide. Regeneration is accomplished through the use of calcium oxides and sodium hydroxide. Sodium sulfide is recovered from the regeneration process in a commercially useful form. Calcium oxides are also regenerated in the process, allowing for minimal or no chemical waste.
(FR)
Procédé de régénération, au moyen d'oxydes de calcium et de soude caustique, d'un composé d'élimination ayant réagi avec de l'acide sulfhydrique. Le sulfure de sodium est récupéré sous une forme utile commercialement et les oxydes de calcium sont également régénérés, ce qui réduit à un minimum ou supprime totalement la production de déchets chimiques.
Also published as
Latest bibliographic data on file with the International Bureau