ATE215909T1 - Herstellung von wasserfreiem soda - Google Patents

Herstellung von wasserfreiem soda

Info

Publication number: ATE215909T1
Authority: AT; Austria
Prior art keywords: production; anhydrous soda; soda; crystals; anhydrous
Prior art date: 1997-12-23

Application number

AT98966423T

Other languages

English (en)

Inventor

Johannes Albertus Maria Meijer

Robert Michael Geertman

Harald Oosterhof

Geert-Jan Witkamp

Rosmalen Gerda Maria Van

Original Assignee

Univ Delft Tech

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.)

1997-12-23

Filing date

1998-12-22

Publication date

2002-04-15

1998-12-22 Application filed by Univ Delft Tech filed Critical Univ Delft Tech

2002-04-15 Application granted granted Critical

2002-04-15 Publication of ATE215909T1 publication Critical patent/ATE215909T1/de

Links

CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title abstract 5
239000013078 crystal Substances 0.000 abstract 1
150000004682 monohydrates Chemical class 0.000 abstract 1
229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
235000017550 sodium carbonate Nutrition 0.000 abstract 1
239000002904 solvent Substances 0.000 abstract 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1

Classifications

- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/35—Varying the content of water of crystallisation or the specific gravity
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/22—Purification
- C01D7/24—Crystallisation
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/35—Varying the content of water of crystallisation or the specific gravity
- C01D7/37—Densifying sodium carbonate
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/38—Preparation in the form of granules, pieces or other shaped products
- C01D7/40—Influencing the crystallisation process

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Inorganic Chemistry (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Detergent Compositions (AREA)
Organic Insulating Materials (AREA)
Compositions Of Macromolecular Compounds (AREA)
Crystals, And After-Treatments Of Crystals (AREA)
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

AT98966423T 1997-12-23 1998-12-22 Herstellung von wasserfreiem soda ATE215909T1 (de)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
EP97204081		1997-12-23
US09/218,519 US6334989B1 (en)	1997-12-23	1998-12-22	Production of water-free soda
PCT/EP1998/008538 WO1999033750A1 (en)	1997-12-23	1998-12-22	Production of water-free soda

Publications (1)

Publication Number	Publication Date
ATE215909T1 true ATE215909T1 (de)	2002-04-15

Family

ID=26147206

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT98966423T ATE215909T1 (de)	1997-12-23	1998-12-22	Herstellung von wasserfreiem soda

Country Status (8)

Country	Link
US (1)	US6334989B1 (de)
EP (1)	EP1042226B1 (de)
AT (1)	ATE215909T1 (de)
AU (1)	AU2277299A (de)
DE (1)	DE69804855T2 (de)
ES (1)	ES2175854T3 (de)
PT (1)	PT1042226E (de)
WO (1)	WO1999033750A1 (de)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2670269A (en) *	1950-07-13	1954-02-23	Columbia Southern Chem Corp	Sodium carbonate
GB748443A (en)	1953-12-11	1956-05-02	Columbia Southern Chem Corp	Improvements in or relating to sodium carbonate monohydrate and anhydrous sodium carbonate
FR1266274A (fr) *	1960-08-29	1961-07-07	Buna Chem Werke Veb	Procédé de fabrication de soude calcinée de poids spécifique de déversement compris entre 0, 8 et 1, 6 kg/dm3
US3425795A (en) *	1966-08-09	1969-02-04	Allied Chem	Method for preparing superdense sodium carbonate from wyoming trona and the product thereof
US3486844A (en) *	1967-12-29	1969-12-30	Phillips Petroleum Co	Production of dense soda ash
US3725014A (en)	1971-04-21	1973-04-03	Allied Chem	Sodium carbonate crystallization process with foam prevention
US3796794A (en)	1972-06-01	1974-03-12	Int Research & Dev Co Ltd	Use of carboxylic acids as crystal growth modifiers for sodium carbonate monohydrate
US3933977A (en)	1974-01-11	1976-01-20	Intermountain Research And Development Corporation	Process for producing sodium carbonate
US3975499A (en)	1974-06-05	1976-08-17	Fmc Corporation	Sodium carbonate monohydrate crystallization
US4104033A (en)	1975-09-12	1978-08-01	Drew Chemical Corporation	Foam prevention in sodium carbonate crystallization
US4183901A (en) *	1976-01-23	1980-01-15	Fmc Corporation	Process for crystallization of anhydrous sodium carbonate
US4879042A (en)	1980-08-18	1989-11-07	Hanson Donald N	Method of crystallizing salts from aqueous solutions
US4374102A (en)	1981-11-13	1983-02-15	Nalco Chemical Company	Polymers for controlling soda ash crystal formation
GB2109783B (en) *	1981-11-20	1985-08-14	Glaxo Group Ltd	Crystalline sodium carbonate
FR2576589B1 (fr)	1985-01-30	1987-03-27	Solvay	Procede de fabrication de carbonate de sodium anhydre dense et carbonate de sodium anhydre dense obtenu par ce procede
US6022385A (en)	1994-05-19	2000-02-08	Bowman; Ronald W.	Process for the manufacture of sodium carbonate crystals from minerals or solutions
US5716419A (en)	1996-07-31	1998-02-10	Ppg Industries, Inc.	Process for crystallization of mineral salts

1998
- 1998-12-22 AT AT98966423T patent/ATE215909T1/de not_active IP Right Cessation
- 1998-12-22 EP EP98966423A patent/EP1042226B1/de not_active Expired - Lifetime
- 1998-12-22 AU AU22772/99A patent/AU2277299A/en not_active Abandoned
- 1998-12-22 ES ES98966423T patent/ES2175854T3/es not_active Expired - Lifetime
- 1998-12-22 DE DE69804855T patent/DE69804855T2/de not_active Expired - Fee Related
- 1998-12-22 PT PT98966423T patent/PT1042226E/pt unknown
- 1998-12-22 US US09/218,519 patent/US6334989B1/en not_active Expired - Fee Related
- 1998-12-22 WO PCT/EP1998/008538 patent/WO1999033750A1/en not_active Ceased

Also Published As

Publication number	Publication date
EP1042226A1 (de)	2000-10-11
DE69804855T2 (de)	2002-12-19
US6334989B1 (en)	2002-01-01
PT1042226E (pt)	2002-09-30
ES2175854T3 (es)	2002-11-16
DE69804855D1 (de)	2002-05-16
EP1042226B1 (de)	2002-04-10
AU2277299A (en)	1999-07-19
WO1999033750A1 (en)	1999-07-08

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Legal Events

Date	Code	Title	Description
2002-10-15	UEP	Publication of translation of european patent specification
2005-09-15	REN	Ceased due to non-payment of the annual fee