Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB18774/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE, Badische Anilin and Sodafabrik AGfiledCriticalBASF SE
Publication of GB738702ApublicationCriticalpatent/GB738702A/en
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B17/00—Sulfur; Compounds thereof
C01B17/22—Alkali metal sulfides or polysulfides
C01B17/24—Preparation by reduction
C01B17/28—Preparation by reduction with reducing gases
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
C01P2006/00—Physical properties of inorganic compounds
C01P2006/80—Compositional purity
C01P2006/82—Compositional purity water content
Landscapes
Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Inorganic Chemistry
(AREA)
Devices And Processes Conducted In The Presence Of Fluids And Solid Particles
(AREA)
Abstract
Anhydrous sodium sulphide is produced by reacting sodium sulphate with reducing gases in a fluidized layer, the walls of the reaction chamber which come into contact with said layer being kept at a temperature which is not higher than that of the layer. Heat may be supplied to the layer by preheating the gas or the sodium sulphate to a temperature above that in the layer. The walls may be uninsulated or only slightly insulated, to permit heat radiation. Specification 700,132 is referred to.
GB18774/53A1952-07-101953-07-07Improvements in the production of anhydrous sodium sulphide
ExpiredGB738702A
(en)
A procedure for the deviation of heat during the transformation of solid materials with gases (Machine-translation by Google Translate, not legally binding)