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Production method of acid calcium pyrophosphate for food leavening agent

A technology of calcium pyrophosphate and production methods, applied in chemical instruments and methods, applications, food science, etc., can solve the problems of no production process, etc., and achieve the effect of convenient process, strong operability and high purity

Inactive Publication Date: 2013-04-10
HUBEI XINGFA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calcium Acid Pyrophosphate (Calcium Acid Pyrophosphate hereinafter referred to as CAPP) is a new type of phosphate. At present, there is no relevant report on its production process in China

Method used

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  • Production method of acid calcium pyrophosphate for food leavening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 1000kg phosphoric acid (85% H 3 PO 4 ), slowly and continuously add 1732kg lime milk (18% Ca(OH) 2 ), the reaction temperature is about 70°C, and the reaction is about 1h. The slurry obtained by the reaction is sent to the spray drying tower for drying. The inlet temperature is 550°C, and the outlet temperature is 110°C. The dried powder is sent to the polymerization furnace for polymerization. The polymerization temperature is controlled at At about 260°C, control the partial pressure of water vapor to 5.0Mpa, and react for about 2 hours to obtain the acid calcium pyrophosphate product, which is used as a food leavening agent.

[0013] The whole reaction process equation is:

[0014] Ca(OH) 2 ﹢2H 3 PO 4 → Ca(H 2 PO 4 ) 2 ﹢2H 2 O;

[0015] Ca(H 2 PO 4 ) 2 → CaH 2 P 2 o 7 + H 2 O.

Embodiment 2

[0017] Add 1000kg phosphoric acid (75% H 3 PO 4 ), slowly and continuously add 500kg of milk of limestone (45% CaCO 3 ), the reaction temperature is about 80°C, the reaction is about 0.5h, and then continue to add 575kg lime milk (20% Ca(OH) 2 ), the reaction temperature is about 65°C, and the reaction is about 1h. The slurry obtained from the reaction is sent to a spray drying tower for drying. The inlet temperature is 600°C and the outlet temperature is 125°C. The dried powder is sent to a polymerization furnace for polymerization. The polymerization temperature is controlled at about 280°C, and the water vapor partial pressure is controlled at 6.0Mpa. After reacting for about 2 hours, an acid calcium pyrophosphate product is obtained, and the acid calcium pyrophosphate is used as a food leavening agent.

[0018] The whole reaction process equation is:

[0019] CaCO 3 + 2H 3 PO 4 → Ca(H 2 PO 4 ) 2 + H 2 O + CO 2 ;

[0020] Ca(OH) 2 + 2H 3 PO 4 → C...

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Abstract

The invention discloses a production method of acid calcium pyrophosphate for food leavening agent. The production method comprises the following steps: carrying out neutralization by taking phosphoric acid and lime milk, or phosphoric acid and limestone as raw materials so as to obtain a monocalcium phosphate solution; drying the monocalcium phosphate solution by a spray drying tower and polymerizing by a polymerization furnace so as to form the acid calcium pyrophosphate which is used as a food leavening agent. With the production method of the acid calcium pyrophosphate for the food leavening agent, the problem of excessive sodium in the application process of the acid calcium pyrophosphate is solved, and the acid calcium pyrophosphate has a special effect of calcium supplement, so that the acid calcium pyrophosphate can replace the acid sodium pyrophosphate in the baking field. The production technology provided by the invention is strong in operability, the technological process is very convenient for industrialization, and the produced products are high in purity.

Description

technical field [0001] The invention discloses a production method of acid calcium pyrophosphate used as food leavening agent. Background technique [0002] Leaving agent is a food additive commonly used in the food industry. Because it can release a large amount of carbon dioxide gas when it is heated and reacts with alkaline substances, it is widely used in the production process of bread, cakes, deep-fried dough sticks, and steamed buns. [0003] Traditional leavening agents are sodium acid pyrophosphate and sodium aluminum acid phosphate, etc., which are mainly composed of sodium, aluminum, and phosphorus. Among them, the use of sodium aluminum phosphate in fried dough sticks has a history of many years. With the deepening of research, the unfavorable factors of aluminum salts to the human body limit its application. At present, the sodium salt is widely used, but the excessive sodium element is absorbed by the human body, which will exceed the range that the kidneys ca...

Claims

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Application Information

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IPC IPC(8): C01B25/42A21D2/02
Inventor 李国璋屈云范佳利张亚娟龚敏
Owner HUBEI XINGFA CHEM GRP CO LTD
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