DK0924165T3 - Process for preparing anhydrous sodium sulfide - Google Patents

Process for preparing anhydrous sodium sulfide

Info

Publication number
DK0924165T3
DK0924165T3 DK98122604T DK98122604T DK0924165T3 DK 0924165 T3 DK0924165 T3 DK 0924165T3 DK 98122604 T DK98122604 T DK 98122604T DK 98122604 T DK98122604 T DK 98122604T DK 0924165 T3 DK0924165 T3 DK 0924165T3
Authority
DK
Denmark
Prior art keywords
sodium sulfide
anhydrous sodium
preparing anhydrous
degrees
less
Prior art date
Application number
DK98122604T
Other languages
Danish (da)
Inventor
Robert Dr Magiera
Christian Alt
Gerhard Rasig
Joerg Dr Muenzenberg
Christoph Dr Batz-Sohn
Ralf Dr Goedecke
Ulrich Dr Deschler
Volker Knapp
Karl-Heinz Ruetzel
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Application granted granted Critical
Publication of DK0924165T3 publication Critical patent/DK0924165T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • 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
    • C01B17/38—Dehydration
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general

Abstract

In the production of anhydrous sodium sulfide, sodium sulfide containing 35-45% water with mixing is passed through an apparatus, in which the product temperature of approximately 20 degrees C at the place of solid injection gradually rises to at least 180 degrees C while the subpressure is maintained at less than 20, preferably less than 11 torr.
DK98122604T 1997-12-16 1998-11-27 Process for preparing anhydrous sodium sulfide DK0924165T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19755760A DE19755760A1 (en) 1997-12-16 1997-12-16 Process for the preparation of anhydrous sodium sulfide

Publications (1)

Publication Number Publication Date
DK0924165T3 true DK0924165T3 (en) 2003-10-06

Family

ID=7852013

Family Applications (1)

Application Number Title Priority Date Filing Date
DK98122604T DK0924165T3 (en) 1997-12-16 1998-11-27 Process for preparing anhydrous sodium sulfide

Country Status (20)

Country Link
EP (1) EP0924165B1 (en)
JP (1) JP4528375B2 (en)
KR (1) KR100572814B1 (en)
CN (1) CN1116224C (en)
AT (1) ATE243164T1 (en)
BR (1) BR9805267A (en)
CA (1) CA2256134A1 (en)
CZ (1) CZ404598A3 (en)
DE (2) DE19755760A1 (en)
DK (1) DK0924165T3 (en)
ES (1) ES2198636T3 (en)
ID (1) ID21469A (en)
IL (1) IL127554A (en)
PL (1) PL193298B1 (en)
PT (1) PT924165E (en)
RU (1) RU2201891C2 (en)
SK (1) SK170398A3 (en)
TR (1) TR199802601A2 (en)
TW (1) TW521064B (en)
ZA (1) ZA9811463B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19930495C1 (en) * 1999-07-01 2000-11-09 Degussa Alkoxysilylalkylpolysulfide compounds, useful assistants in the production of silica filled rubber, made by reacting silyl alkyl halides with alkali polysulfides obtained by reacting alkali hydroxides with sulfur in non-aqueous solvent
AU7864000A (en) * 1999-10-05 2001-05-10 Ppg Industries Ohio, Inc. Method of preparing anhydrous alkali metal sulfides
DE19956377A1 (en) * 1999-11-24 2001-06-13 Degussa Process for the production of anhydrous, high-purity sodium sulfide
US6582675B2 (en) * 2000-03-28 2003-06-24 Degussa Ag Method for the preparation of anhydrous sodium sulfide
DE10256531A1 (en) 2002-12-04 2004-06-24 Degussa Ag Process for the preparation of anhydrous alkali sulfide
CN104163402A (en) * 2014-07-18 2014-11-26 中国石油化工股份有限公司 Preparation method of anhydrous sodium sulfide
CN106076504A (en) * 2016-08-25 2016-11-09 广西联壮科技股份有限公司 The reducing mechanism of sodium sulfide raw material pretreatment stage

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58175751A (en) * 1982-04-08 1983-10-15 Hitachi Zosen Corp Drying method by means of chemical heat accumulation
JPH0251404A (en) * 1988-05-31 1990-02-21 Sankyo Kasei Kk Production of anhydrous sodium sulfide crystal
JPH0259406A (en) * 1988-08-25 1990-02-28 Sankyo Kasei Kk Production of anhydrous sodium sulfide crystal
JPH04310508A (en) * 1991-04-03 1992-11-02 Sankyo Kasei Kk Production of sodium sulfide low-hydrate or anhydride
JP3437206B2 (en) * 1993-02-23 2003-08-18 ナガオ株式会社 Dehydration method of sodium sulfide
JPH06256003A (en) * 1993-03-02 1994-09-13 Nagao Kk Production of formed material of highly concentrated sodium hydrosulfide
JP3408570B2 (en) * 1993-03-02 2003-05-19 ナガオ株式会社 Dehydration method of tangible sodium hydrosulfide
JP3408575B2 (en) * 1993-04-13 2003-05-19 ナガオ株式会社 Dehydration method of tangible sodium hydrosulfide with inert gas
JP3408576B2 (en) * 1993-04-22 2003-05-19 ナガオ株式会社 Method for dehydrating tangible sodium sulfide with inert gas

Also Published As

Publication number Publication date
EP0924165B1 (en) 2003-06-18
TR199802601A3 (en) 1999-07-21
KR19990062979A (en) 1999-07-26
JP4528375B2 (en) 2010-08-18
PL330303A1 (en) 1999-06-21
CN1116224C (en) 2003-07-30
BR9805267A (en) 1999-11-09
DE59808752D1 (en) 2003-07-24
TR199802601A2 (en) 1999-07-21
JPH11236204A (en) 1999-08-31
ES2198636T3 (en) 2004-02-01
CZ404598A3 (en) 1999-11-17
ATE243164T1 (en) 2003-07-15
IL127554A0 (en) 1999-10-28
PL193298B1 (en) 2007-01-31
PT924165E (en) 2003-11-28
EP0924165A1 (en) 1999-06-23
SK170398A3 (en) 1999-12-10
RU2201891C2 (en) 2003-04-10
ZA9811463B (en) 1999-06-14
KR100572814B1 (en) 2006-09-20
ID21469A (en) 1999-06-17
CN1220233A (en) 1999-06-23
DE19755760A1 (en) 1999-06-24
TW521064B (en) 2003-02-21
IL127554A (en) 2001-08-08
CA2256134A1 (en) 1999-06-16

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