CN101049914A - Method for manufacturing liquid sodium hyposulphite - Google Patents
Method for manufacturing liquid sodium hyposulphite Download PDFInfo
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- CN101049914A CN101049914A CN 200710027444 CN200710027444A CN101049914A CN 101049914 A CN101049914 A CN 101049914A CN 200710027444 CN200710027444 CN 200710027444 CN 200710027444 A CN200710027444 A CN 200710027444A CN 101049914 A CN101049914 A CN 101049914A
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- China
- Prior art keywords
- liquid sodium
- manufacture method
- hyposulphite
- sodium hyposulphite
- concentration
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
This invention discloses a method for producing liquid sodium dithionite. The method comprises: (1) preparing an alkaline solution; (2) adding solid Na2SO4 into the alkaline solution, stirring for dissolution, and ending stirring after Na2SO4 is completely dissolved; (3) immediately adding an appropriate amount of floating oil for sealing and storing. Since liquid sodium dithionite is produced in an alkaline condition, and sealed by floating oil, it can be stored at normal temperature with a low decomposition rate, and cold-storage is not needed.
Description
Affiliated technical field
The present invention relates to a kind of manufacture method of V-Brite B, relate in particular to a kind of manufacture method of liquid sodium hyposulphite.
Background technology
Sodium dithionite (Na
2S
2O
4) be commonly called as sodium hydrosulfite, be industrial reducing agent commonly used, mainly be used as the bleaching agent of textile printing and dyeing and paper-making industry.And humidity is very big in the Working environment of fabrics printing and dyeing and paper pulp papermaking industry, when using the solid V-Brite B, after taking packing apart, V-Brite B decomposes heating with regard to very easily absorbing airborne moisture, even the danger that causes spontaneous combustion, emits deleterious sulfur dioxide gas is arranged, thereby cause unnecessary loss to enterprise; The solid V-Brite B in use also can cause reinforced dust, contaminate environment; Simultaneously, use the solid V-Brite B to adopt the enterprise that produces continuous and automatic that many inconvenience are also arranged for needs.
Therefore, liquid sodium hyposulphite occurred, existing liquid sodium hyposulphite adopts the manufacturing of sodium borohydride method, and the liquid sodium hydrosulfite of this kind method manufacturing still needs under freezing conditions to preserve, thus be not easy to the liquid sodium hydrosulfite preservation and use.
Summary of the invention
The manufacture method that the purpose of this invention is to provide a kind of liquid sodium hyposulphite can be preserved at normal temperatures by the liquid sodium hyposulphite of the party's method manufacturing, thus be convenient to the liquid sodium hydrosulfite preservation and use.
For achieving the above object, the invention provides a kind of manufacture method of liquid sodium hyposulphite, this method comprises the steps:
(1) preparation basic solution;
(2) in above-mentioned alkaline solution, add solid Na
2S
2O
4Carry out stirring and dissolving, and at Na
2S
2O
4Stop behind the dissolve complete stirring;
(3) add immediately an amount of oil slick after stopping to stir and carry out oil sealing and storage.
Described basic solution is sodium hydroxide and/or yellow soda ash to be dissolved in the water form.
The concentration of described basic solution is 0.5%-5%, and preferred concentration is 0.8%-1.2%.
Described Na
2S
2O
4Concentration is 10%～25%, and preferred concentration is 12%-18%.
Described oil slick is selected from kerosene, diesel oil and whiteruss.
In described liquid sodium hyposulphite, add the auxiliary agent that is selected from tripoly phosphate sodium STPP, trisodium phosphate and sodium sulfate.
Because the manufacture method of this law invention liquid sodium hyposulphite is to prepare under alkali condition, and uses oil sealing sealing, the liquid sodium hyposulphite of therefore making by the inventive method can be low in resolution ratio under the storage at normal temperature, thereby needn't carry out refrigerated storage.
Embodiment
The manufacture method of liquid sodium hyposulphite of the present invention comprises the steps:
(1) preparation basic solution;
(2) in above-mentioned alkaline solution, add solid Na
2S
2O
4Carry out stirring and dissolving, and at Na
2S
2O
4Stop behind the dissolve complete stirring;
(3) add immediately an amount of oil slick after stopping to stir and carry out oil sealing and storage.
Described basic solution is under agitation condition, gets a certain amount of sodium hydroxide and/or yellow soda ash and is dissolved in a certain amount of water formulatedly, and the concentration of this basic solution is controlled at 0.5%-5%, particularly preferably is to be controlled at 0.8%-1.2%.
Na in this liquid sodium hyposulphite
2S
2O
4Concentration is controlled in the 10%-25%, particularly preferably is to be controlled at 12%-18%.
Used oil slick can be the oil light with the immiscible ratio water of water, and this oil slick can at any oil-based liquid of 10-30 ℃ of good fluidity, stable in properties, particularly preferably be the kerosene or diesel oil or the atoleine that adopt flash-point high, cheap.
Can add some at the aforesaid liquid V-Brite B and answer used additives, with the demand that satisfies different industries such as tripoly phosphate sodium STPP, trisodium phosphate, sodium sulfate etc.
Because the manufacture method of this law invention liquid sodium hyposulphite is to prepare under alkali condition, and uses oil sealing sealing, the liquid sodium hyposulphite of therefore making by the inventive method can be low in resolution ratio under the storage at normal temperature, thereby needn't carry out refrigerated storage.
Embodiment one
In a glass container, add 5L water, under stirring condition, add earlier 80g NaOH and 2.5g sodium carbonate dissolves; Then, the industrial solid Na that adds 88% grade of 1.3kg with speed faster
2S
2O
4Dissolve Na
2S
2O
4Namely stop behind the dissolve complete stirring, add an amount of kerosene and carry out oil sealing at once.
In the present embodiment, Na
2S
2O
4Concentration be 18.0%, after 5 days, sample analysis records Na at storage at normal temperature
2S
2O
4Concentration is 17.2%, Na
2S
2O
4Resolution ratio be 4.5%.
Embodiment two
In a glass container, add the 5L running water, under stirring condition, add earlier 75g NaOH and dissolve; Then, the industrial solid Na that adds the 1kg85% level with speed faster
2S
2O
4Dissolve Na
2S
2O
4Namely stop behind the dissolve complete stirring, add an amount of kerosene and carry out oil sealing at once.
In the present embodiment, Na
2S
2O
4Concentration be 13.9%; Storage at normal temperature after 5 days sample analysis record Na
2S
2O
4Concentration is 13.3%, Na
2S
2O
4Resolution ratio be 4.6%.
Claims (6)
1. the manufacture method of a liquid sodium hyposulphite is characterized in that, this method comprises the steps:
(1) preparation basic solution;
(2) in above-mentioned alkaline solution, add solid Na
2S
2O
4Carry out stirring and dissolving, and at Na
2S
2O
4Stop behind the dissolve complete stirring;
(3) add immediately an amount of oil slick after stopping to stir and carry out oil sealing and storage.
2. the manufacture method of a kind of liquid sodium hyposulphite according to claim 1 is characterized in that described basic solution is sodium hydroxide and/or yellow soda ash to be dissolved in the water form.
3. the manufacture method of a kind of liquid sodium hyposulphite according to claim 1, the concentration that it is characterized in that described basic solution is 0.5%-5%, preferred concentration is 0.8%-1.2%.
4. the manufacture method of a kind of liquid sodium hyposulphite according to claim 2 is characterized in that described Na
2S
2O
4Concentration is 10%～25%, and preferred concentration is 12%-18%.
5. the manufacture method of a kind of liquid sodium hyposulphite according to claim 1 is characterized in that described oil slick is selected from kerosene, diesel oil and whiteruss.
6. the manufacture method of a kind of liquid sodium hyposulphite according to claim 1 is characterized in that adding the auxiliary agent that is selected from tripoly phosphate sodium STPP, trisodium phosphate and sodium sulfate in described liquid sodium hyposulphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027444 CN101049914A (en) | 2007-04-06 | 2007-04-06 | Method for manufacturing liquid sodium hyposulphite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027444 CN101049914A (en) | 2007-04-06 | 2007-04-06 | Method for manufacturing liquid sodium hyposulphite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101049914A true CN101049914A (en) | 2007-10-10 |
Family
ID=38781552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710027444 Pending CN101049914A (en) | 2007-04-06 | 2007-04-06 | Method for manufacturing liquid sodium hyposulphite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101049914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552991A (en) * | 2013-10-23 | 2014-02-05 | 中盐安徽红四方股份有限公司 | Novel continuous large dropwise adding technological method in sodium hydrosulfite production |
-
2007
- 2007-04-06 CN CN 200710027444 patent/CN101049914A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552991A (en) * | 2013-10-23 | 2014-02-05 | 中盐安徽红四方股份有限公司 | Novel continuous large dropwise adding technological method in sodium hydrosulfite production |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |