Preparation method of food-grade aluminum-free disodium dihydrogen pyrophosphate with low gas emission volume

A food-grade disodium dihydrogen pyrophosphate technology, which can be used in food drying, chemical instruments and methods, and food ingredients as fluffing agents, etc. It can solve the problems of unrefined tissue structure, large volume, rough taste, etc., and achieve high-quality taste , Uniform size, smooth gas effect

Inactive Publication Date: 2018-08-28
连云港西都食品配料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by this invention is to provide a new food-grade a

Method used

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  • Preparation method of food-grade aluminum-free disodium dihydrogen pyrophosphate with low gas emission volume
  • Preparation method of food-grade aluminum-free disodium dihydrogen pyrophosphate with low gas emission volume

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Embodiment 1

[0019] Embodiment 1, a preparation method of food-grade aluminum-free low-gas generation disodium dihydrogen pyrophosphate, the method uses phosphoric acid and sodium hydroxide as raw materials, and the specific steps are as follows:

[0020] (1) Raw material preparation: After filtering phosphoric acid, adjust the temperature to 45°C and concentration to 51°Bé; after filtering sodium hydroxide, adjust the temperature to 45°C and concentration to 30°Bé; the mass content of raw phosphoric acid is 80%, arsenic≤0.0002 %, the mass content of sodium hydroxide is 98%.

[0021] (2) Neutralization: Add phosphoric acid to the neutralization tank, start stirring, add additives calcium carbonate and potassium dihydrogen phosphate before adding sodium hydroxide, the additives are added in an amount of 0.1% of the mass of phosphoric acid, and the additives After dissolving completely, open the sodium hydroxide feed valve, control the sodium hydroxide feed rate to be 0.3kg / s; The pH value ...

Embodiment 2

[0024] Embodiment 2, a preparation method of food-grade aluminum-free low-gas generation disodium dihydrogen pyrophosphate, the method uses phosphoric acid and sodium hydroxide as raw materials, and the specific steps are as follows:

[0025] (1) Raw material preparation: after filtering phosphoric acid, adjust the temperature to 60°C and concentration to 53°Bé; after filtering sodium hydroxide, adjust the temperature to 60°C and concentration to 40°Bé; the mass content of raw phosphoric acid is 85%, arsenic ≤ 0.0002 %, the mass content of sodium hydroxide is 99.5%.

[0026] (2) Neutralization: Add phosphoric acid to the neutralization tank, start stirring, add additives calcium carbonate and potassium dihydrogen phosphate before adding sodium hydroxide, the additives are added in an amount of 0.5% of the mass of phosphoric acid, and the additives After dissolving completely, open the sodium hydroxide feed valve, control the sodium hydroxide feed rate to be 0.4kg / s; The pH va...

Embodiment 3

[0029] Embodiment 3, a preparation method of food-grade aluminum-free low-gas generation disodium dihydrogen pyrophosphate, the method uses phosphoric acid and sodium hydroxide as raw materials, and the specific steps are as follows:

[0030] (1) Raw material preparation: After filtering phosphoric acid, adjust the temperature to 50°C and concentration to 52°Bé; after filtering sodium hydroxide, adjust the temperature to 50°C and concentration to 35°Bé; the mass content of raw phosphoric acid is 83%, arsenic≤0.0002 %, the mass content of sodium hydroxide is 99%.

[0031] (2) Neutralization: Add phosphoric acid to the neutralization tank, start stirring, add additives calcium carbonate and potassium dihydrogen phosphate before adding sodium hydroxide, the amount of calcium carbonate added is 0.3% of the mass of phosphoric acid, dihydrogen phosphate The amount of potassium added is 0.1% of the mass of phosphoric acid. After the auxiliary agent is completely dissolved, open the s...

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Abstract

The invention discloses a preparation method of food-grade aluminum-free disodium dihydrogen pyrophosphate with low gas emission volume. The preparation method comprises the following steps: filteringphosphoric acid and sodium hydroxide and regulating a temperature and concentration; adding phosphoric acid into a neutralization kettle, adding additives including calcium carbonate and potassium dihydrogen phosphate to obtain a mixture, and completely dissolving the mixture and then adding sodium hydroxide; controlling a reaction temperature and reaction end points after the sodium hydroxide solution is completely added, and curing to obtain a neutralized material; dropping the neutralized material into a powder spraying tower and performing powder spraying and drying to obtain anhydrous sodium dihydrogen phosphate powdery material; dropping the anhydrous sodium dihydrogen phosphate powdery material into a polyfurnace and performing polymerization, drying and sieving to prepare the aluminum-free disodium dihydrogen pyrophosphate with the low gas emission volume. According to the method disclosed by the invention, the additives including calcium carbonate and potassium dihydrogen phosphate are added, and the steps of the preparation method and parameters of the preparation method are optimized simultaneously, so that the problems that the size of a flour product made from disodium dihydrogen pyrophosphate is overlarge, a tissue structure is not exquisite and a taste is rough are solved, so that the products such as cakes and noodles are subjected to gas emission smoothly in aproduction process, the sizes of the products are uniform, the tissues are exquisite and the taste is superior.

Description

technical field [0001] The invention relates to a preparation method of a food additive, in particular to a preparation method of food-grade disodium dihydrogen pyrophosphate without aluminum and low gas generation. Background technique [0002] The physical and chemical properties of disodium dihydrogen pyrophosphate is white crystalline powder with a relative density of 1.862. It can be decomposed into sodium metaphosphate when heated above 220°C. Soluble in water, insoluble in ethanol. The aqueous solution is acidic and can be mixed with Cu 2+ , Fe 2+ A chelate is formed, and the aqueous solution is heated with dilute sulfuric acid and dilute inorganic acid to be hydrolyzed into phosphoric acid. [0003] In the prior art, disodium dihydrogen pyrophosphate is prepared by heating sodium dihydrogen phosphate to 200°C for dehydration; or adding sodium carbonate to phosphoric acid and then heating to 200°C for dehydration. [0004] The disodium dihydrogen pyrophosphate pr...

Claims

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Application Information

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IPC IPC(8): C01B25/42A23L29/00A21D2/02
CPCA21D2/02A23V2002/00A23L29/015C01B25/425A23V2200/14A23V2200/234A23V2300/10
Inventor 田大林李戈华戴中超
Owner 连云港西都食品配料有限公司
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