ES455395A1 - Metodo de producir sulfito sdico anhidro. - Google Patents
Metodo de producir sulfito sdico anhidro.Info
- Publication number
- ES455395A1 ES455395A1 ES455395A ES455395A ES455395A1 ES 455395 A1 ES455395 A1 ES 455395A1 ES 455395 A ES455395 A ES 455395A ES 455395 A ES455395 A ES 455395A ES 455395 A1 ES455395 A1 ES 455395A1
- Authority
- ES
- Spain
- Prior art keywords
- solution
- anhydrous sodium
- sodium sulfite
- crystals
- range
- Prior art date
- 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
Links
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 title abstract 7
- 235000010265 sodium sulphite Nutrition 0.000 title abstract 2
- 239000000243 solution Substances 0.000 abstract 7
- 229940101006 anhydrous sodium sulfite Drugs 0.000 abstract 3
- 239000013078 crystal Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000012452 mother liquor Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 abstract 1
- 229940001584 sodium metabisulfite Drugs 0.000 abstract 1
- 235000010262 sodium metabisulphite Nutrition 0.000 abstract 1
- 229940001482 sodium sulfite Drugs 0.000 abstract 1
- 239000000725 suspension Substances 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
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/14—Preparation of sulfites
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Compounds Of Iron (AREA)
- Paper (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Método de producir sulfito sódico anhidro, caracterizado porque comprende: a) formar una disolución acuosa saturada de sulfito sodico que contiene menos de unas 3 ppm de hierro disuelto, en base a la disolución, y ajustar el ph de dicha disolución, en base a la disolución, y ajustar el ph de dicha disolución dentro de la gama de unos 6,5 a unos 7,6; b) introducir en dicha disolución carbonato sodico sustancialmente anhidro simultáneamente con, o sin, aguas madres de las que se han obtenido cristales de metabisulfito sodico por cristalización, y una corriente de gas que contiene dióxido de azufre, proporcionadas mutuamente de tal forma que se mantenga el ph de dicha disolución dentro de la gama de unos 6,5 a unos 7,6, al tiempo que se mantiene la temperatura de dicha disolución por encima de unos 35ºC para formar una supersion de cristales de sulfito sodico anhidro; y c) separar cristales de sulfito sodico anhidro de dicha suspensión.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/653,876 US4003985A (en) | 1976-01-30 | 1976-01-30 | Production of sodium sulfite |
| US05/711,326 US4112061A (en) | 1976-01-30 | 1976-08-03 | Production of sodium sulfite utilizing mother liquor from the sodium metabisulfite process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES455395A1 true ES455395A1 (es) | 1978-03-01 |
Family
ID=27096610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES455395A Expired ES455395A1 (es) | 1976-01-30 | 1977-01-27 | Metodo de producir sulfito sdico anhidro. |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS6054887B2 (es) |
| BR (1) | BR7700565A (es) |
| CA (1) | CA1093786A (es) |
| DE (1) | DE2703480A1 (es) |
| ES (1) | ES455395A1 (es) |
| FR (1) | FR2339573A1 (es) |
| GB (1) | GB1520698A (es) |
| IT (1) | IT1202407B (es) |
| MX (1) | MX143611A (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2940697C2 (de) * | 1979-10-08 | 1982-02-25 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Herstellung von Natriumsulfit |
| WO2009062984A1 (en) * | 2007-11-12 | 2009-05-22 | Solvay Chemicals, Inc. | Method of decarbonation and its use in producing crystalline sodium sulfite or other alkali products |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1096883B (de) * | 1959-09-25 | 1961-01-12 | Basf Ag | Verfahren zur Herstellung von festem Alkalisulfit |
| DE1186450B (de) * | 1963-04-05 | 1965-02-04 | Basf Ag | Verfahren zur Herstellung von reinem Natriumbisulfit und -sulfit |
| BE657772A (es) * | 1963-12-30 | |||
| PL89623B1 (es) * | 1973-12-27 | 1976-11-30 | ||
| JPS5322192A (en) * | 1976-08-13 | 1978-03-01 | Nisso Kinzoku Kk | Manufacturing process for higher purity sodium sulfite anhydride |
-
1977
- 1977-01-20 FR FR7701591A patent/FR2339573A1/fr active Granted
- 1977-01-25 IT IT6715177A patent/IT1202407B/it active
- 1977-01-27 MX MX16784177A patent/MX143611A/es unknown
- 1977-01-27 ES ES455395A patent/ES455395A1/es not_active Expired
- 1977-01-28 JP JP860377A patent/JPS6054887B2/ja not_active Expired
- 1977-01-28 DE DE19772703480 patent/DE2703480A1/de active Granted
- 1977-01-28 GB GB356677A patent/GB1520698A/en not_active Expired
- 1977-01-28 CA CA270,648A patent/CA1093786A/en not_active Expired
- 1977-01-28 BR BR7700565A patent/BR7700565A/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2703480C2 (es) | 1988-03-10 |
| FR2339573B1 (es) | 1982-10-01 |
| IT1202407B (it) | 1989-02-09 |
| FR2339573A1 (fr) | 1977-08-26 |
| JPS5294895A (en) | 1977-08-09 |
| BR7700565A (pt) | 1977-10-04 |
| DE2703480A1 (de) | 1977-08-04 |
| JPS6054887B2 (ja) | 1985-12-02 |
| CA1093786A (en) | 1981-01-20 |
| GB1520698A (en) | 1978-08-09 |
| MX143611A (es) | 1981-06-10 |
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