CN102887495B - Method for producing trisodium monohydrogen diphosphate by neutralization process - Google Patents
Method for producing trisodium monohydrogen diphosphate by neutralization process Download PDFInfo
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- CN102887495B CN102887495B CN201210341421.1A CN201210341421A CN102887495B CN 102887495 B CN102887495 B CN 102887495B CN 201210341421 A CN201210341421 A CN 201210341421A CN 102887495 B CN102887495 B CN 102887495B
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Abstract
The invention provides a method for producing trisodium monohydrogen diphosphate by a neutralization process. The method comprises the following steps of performing neutralization reaction on phosphoric acid and alkali which serve as raw materials, spray drying a neutralized solution at the temperature of between 140 and 180 DEG C, conveying the powder obtained by the spray drying step to a polymerization furnace at the temperature of between 170 and 250 DEG C and performing polymerization to obtain trisodium monohydrogen diphosphate. The alkali used in the method is ion film caustic soda or sodium carbonate, and the ratio of Na to P is 1.50 to 1.51. The invention provides the method for producing the trisodium monohydrogen diphosphate. The trisodium monohydrogen diphosphate is a new type of phosphate in China, and the method for producing the trisodium monohydrogen diphosphate is originated in China and fills in the blank in production of the trisodium monohydrogen diphosphate. Moreover, the trisodium monohydrogen diphosphate produced by the method solves the problems that sodium pyrophosphate has poor solubleness and high alkalinity in application and can replace the sodium pyrophosphate in a lot of application fields. The production method is high in operability, the flow is quite convenient for industrialization, and the products produced by the method are high in purity.
Description
Technical field
The present invention relates to a kind of is the method that raw material reaction is produced tetra-sodium one hydrogen trisodium by phosphorus bronsted lowry acids and bases bronsted lowry.
Background technology
Phosphoric acid salt has a wide range of applications in food, and trisodium phosphate is used widely as water-holding agent in meat product, fishery products; But the high pH value of trisodium phosphate is unfavorable for meat product, look is pickled in formation, and high pH value also can bring heavier soap taste or astringent taste, affects the mouthfeel of food; Trisodium phosphate poorly soluble, especially under cold condition, dissolution rate is full, and easy caking in solution is not easy to the industrial treatment process of food.
Tetra-sodium one hydrogen trisodium is a kind of phosphoric acid salt between trisodium phosphate and Sodium Acid Pyrophosphate, pH value 7.0 ± 0.5, solvability is good, with the composite use of trisodium phosphate or separately use can avoid the shortcoming of trisodium phosphate in food-processing.In addition, tetra-sodium one hydrogen trisodium can also be served as odorant, the phagostimulant of pet food, has abroad purposes widely.Tetra-sodium one hydrogen trisodium, as a kind of new additive that can be used for food, is not closed the report of its production technique and applied research at present at home.
Summary of the invention
The invention provides a kind of compound by containing pyrophosphate and alkali or acid is the method that raw material reaction is produced tetra-sodium one hydrogen trisodium.
The object of the present invention is achieved like this: a kind of neutralisation is produced the method for tetra-sodium one hydrogen trisodium, carry out neutralization reaction taking phosphorus bronsted lowry acids and bases bronsted lowry as raw material, temperature of reaction 80-120 DEG C, pulp density is controlled at 30-60%, insulation 0.5-1h sprays neutralization solution dry between 140-180 ° of C, and dry gained powder is sent into polymerization in polymerization furnace, polymerization temperature is controlled at 170-230 ° of C, and reaction obtains tetra-sodium one hydrogen trisodium.Described raw material alkali is ion film caustic soda or sodium carbonate.The ratio of raw material phosphor bronsted lowry acids and bases bronsted lowry is 1.50-1.51 for controlling Na: P.
The invention provides the production method of tetra-sodium one hydrogen trisodium.Tetra-sodium one hydrogen trisodium is domestic new variety phosphoric acid salt, and this technique is domestic initiation, has filled up the blank of this respect.Solve problem poorly soluble in trisodium phosphate application process, that alkalescence is strong simultaneously, can replace trisodium phosphate in numerous Application Areass.Production technique provided by the invention is workable, and flow process is extremely convenient to industrialization, and the purity of products obtained therefrom is high.
Embodiment
Example 1:
Example 1: a certain amount of phosphoric acid is added in neutralization pot, add continuously ion film caustic soda to Na: P be 1.50-1.51, pulp density is controlled at 30-60%, temperature of reaction 80-120 DEG C, insulation 0.5-1h, the solution that reaction is obtained is sprayed dry between 140-180 DEG C, dry gained powder is sent into polymerization in polymerization furnace, polymerization temperature is controlled at 170-250 DEG C, and reaction 2h, obtains tetra-sodium one hydrogen trisodium product.
Whole reaction process equation is:
3NaOH+2H
3PO
4→Na
2HPO
4+NaH
2PO
4+3H
2O
Na
2HPO
4+NaH
2PO
4→Na
3HP
2O
7+H
2O
Example 2: first water is added in neutralization pot, add a certain amount of soda ash, stirring and dissolving is complete, logical steam heating, solution is warming up to 80-120 DEG C, adds phosphoric acid for food, and controlling Na: P is 1.50-1.51, and pulp density is controlled at 30-60%, insulation reaction 0.5-1h.Solution is sprayed between 140-180 ° of C dry, dry gained powder is sent into polymerization in polymerization furnace, and polymerization temperature is controlled at 170-250 DEG C, and reaction 2h, obtains tetra-sodium one hydrogen trisodium product.
Whole reaction process equation is:
3Na
2CO
3+4H
3PO
4→2Na
2HPO
4+2NaH
2PO
4+3H
2O+3CO2
Na
2HPO
4+NaH
2PO
4→Na
3HP
2O
7+H
2O
Example 1 and example 2 products obtained therefrom detected results are as following table:
Claims (2)
1. the method for a neutralisation production tetra-sodium one hydrogen trisodium, it is characterized in that: carry out neutralization reaction taking phosphoric acid and ion film caustic soda as raw material, phosphoric acid is added in neutralization pot, adding continuously ion film caustic soda to the mol ratio of Na and P is 1.50-1.51:1, and to control pulp density be 30-60%, temperature of reaction is 80-120 DEG C, insulation 0.5-1h, the solution that reaction is obtained is sprayed dry between 140-180 DEG C, dry gained powder is sent into polymerization in polymerization furnace, controlling temperature in polymerization furnace is 170-250 DEG C, and reaction 2h, obtains tetra-sodium one hydrogen trisodium.
2. the method for a neutralisation production tetra-sodium one hydrogen trisodium, it is characterized in that: carry out neutralization reaction taking phosphoric acid for food and soda ash as raw material, water is added in neutralization pot, add soda ash, stirring and dissolving is complete, logical steam heating, solution is warming up to 80-120 DEG C, add phosphoric acid for food, control Na:P is 1.50-1.51:1, and to control pulp density be 30-60%, insulation reaction 0.5-1h, the solution that reaction is obtained is sprayed dry between 140-180 DEG C, dry gained powder is sent into polymerization in polymerization furnace, controlling temperature in polymerization furnace is 170-250 DEG C, reaction 2h, obtain tetra-sodium one hydrogen trisodium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210341421.1A CN102887495B (en) | 2012-09-16 | 2012-09-16 | Method for producing trisodium monohydrogen diphosphate by neutralization process |
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|---|---|---|---|
| CN201210341421.1A CN102887495B (en) | 2012-09-16 | 2012-09-16 | Method for producing trisodium monohydrogen diphosphate by neutralization process |
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| Publication Number | Publication Date |
|---|---|
| CN102887495A CN102887495A (en) | 2013-01-23 |
| CN102887495B true CN102887495B (en) | 2014-11-05 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145111B (en) * | 2013-03-27 | 2014-10-15 | 徐州工业职业技术学院 | Production method of disodium dihydrogen pyrophosphate with high raising rate |
| CN113173568B (en) * | 2021-05-07 | 2023-03-14 | 云南莱德福科技有限公司 | Trisodium pyrophosphate anhydride and preparation method and application thereof |
| CN114804050A (en) * | 2022-05-29 | 2022-07-29 | 四川金地亚美科技有限公司 | Production process of anhydrous trisodium pyrophosphate |
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2012
- 2012-09-16 CN CN201210341421.1A patent/CN102887495B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 卫生部.关于批准焦磷酸一氢三钠等5种食品添加剂新品种的公告.《关于批准焦磷酸一氢三钠等5种食品添加剂新品种的公告》.2012, * |
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