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Production method of disodium dihydrogen pyrophosphate with high raising rate

Inactive Publication Date: 2013-06-12
XUZHOU COLLEGE OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the production of disodium dihydrogen pyrophosphate with low gas generation rate and high gas generation rate is relatively difficult
Existing patent No. is 201010584116 the production method of the disodium dihydrogen pyrophosphate of low gas generation speed, the production method of high gas generation speed has not yet been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Put 2000kg of food-grade phosphoric acid with a content of 78% and 2052kg of ion-exchange membrane sodium hydroxide with a content of 31% into the neutralization tank at the same time, and then put in 1.5kg of ion-exchange membrane potassium hydroxide with a content of 90%. After adding the neutralization reaction near the end, use the above-mentioned phosphoric acid or sodium hydroxide to fine-tune the pH value, so that the pH of the neutralization solution (sample diluted to 1% sodium dihydrogen phosphate) is 4.2. Use water to adjust the specific gravity of the neutralizing solution to 1.29. Put the neutralizing solution into the spray drying tower, the temperature at the bottom of the tower is 150°C, and the exported sodium dihydrogen phosphate product contains 8.2% crystal water. Send sodium dihydrogen phosphate into the drum-type polymerization furnace with a lifting plate on the inner wall. The polymerization temperature is 220-230°C. The silver solution test ort...

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Abstract

The invention relates to a production method of disodium dihydrogen pyrophosphate and particularly relates to a production method of disodium dihydrogen pyrophosphate with a high raising rate. The production method comprises the following steps: performing a neutralization reaction on phosphoric acid and sodium hydroxide, adding potassium hydroxide at the neutralization stage, fine tuning the pH of the neutralization solution through the phosphoric acid or sodium hydroxide, controlling the ratio, and then, conducting spray drying on the neutralization solution to obtain sodium dihydrogen phosphate granules, conveying the sodium dihydrogen phosphate granules into a drum polymerization furnace to be polymerized, and cooling the product to obtain the disodium dihydrogen pyrophosphate with a high raising rate. The raising rate ROR of the disodium dihydrogen pyrophosphate produced by the method provided by the invention is 36-42, the disodium dihydrogen pyrophosphate is used as an acid salt ingredient in a composite raising agent, the ROR change within the quality guarantee period is small, and the stability is good.

Description

technical field [0001] The invention relates to a production method of disodium dihydrogen pyrophosphate, in particular to a production method of disodium dihydrogen pyrophosphate with a high gas generation rate. Background technique [0002] Disodium dihydrogen pyrophosphate, referred to as SAPP, can be used as a rapid leavening agent, quality improver, leavening agent, buffering agent, etc. in food processing, and is often used as an acidic component of synthetic leavening agents such as bread and cakes. Foods such as bread, cakes, and steamed buns are characterized by a spongy porous structure to produce a soft taste. For this purpose, a sufficient amount of gas must be maintained in the dough. Most of the required gas is provided by the leavening agent. Commonly used composite leavening agents use NaHCO3 and acid salts to generate CO2 gas. Sodium acid pyrophosphate is a widely used acid salt, which is suitable for a variety of baked and fried foods. The gas productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/42
Inventor 张晓红王德堂彭德厚
Owner XUZHOU COLLEGE OF INDAL TECH
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