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Energy-saving production method of calcium lactate

A production method, calcium lactate technology, applied in chemical instruments and methods, carboxylate preparation, carboxylate preparation, etc., can solve the problems of high energy consumption in the drying process, large investment in calcium lactate production equipment, etc., and achieve low production cost , Omit the drying process and save energy

Pending Publication Date: 2020-05-15
武汉三江航天固德生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides an energy-saving production method of calcium lactate. The main feature of the method is that the drying process can be omitted, and the problem of large investment in calcium lactate production equipment and high energy consumption in the drying process can be solved.

Method used

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  • Energy-saving production method of calcium lactate
  • Energy-saving production method of calcium lactate
  • Energy-saving production method of calcium lactate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take 675.6g (6mol) of food-grade lactic acid solution with a mass fraction of 80%, put it into a 2000ml conical flask, add 81.1g of pure water, and put it into a magnet. Place the triangular flask on a magnetic stirring heater and an electronic scale. After recording the quality parameters, under continuous stirring, heat the lactic acid solution to a slightly boiling state and maintain it. Continuously add a small amount of dried calcium oxide powder 168.32g (3mol ). During this period, the volatilized moisture is properly replenished according to the quality parameters. After 35 minutes, the addition reaction was completed, and the pH value of the reaction solution was measured to be 6.83. Pour the calcium lactate reaction solution into a 1000ml polyethylene plastic bottle under heat, seal it and cool it at room temperature for 10 hours, then disassemble the plastic bottle, break and mix the calcium lactate pentahydrate cylinder and test it. The dry weight of the pro...

Embodiment 2

[0039] Take 600kg of pharmaceutical-grade lactic acid solution with a mass fraction of 88%, put it into a 1000-liter reaction tank, add 139.29kg of pure water, and heat the lactic acid solution to a slight boiling state and maintain it through the jacket steam under continuous stirring. The calcium oxide powder 164.43kg after adding the drying. During this period, the volatilized water vapor is cooled by the condenser and flows back into the reaction tank. After 110 minutes, the addition of calcium oxide powder was completed, and the reaction was continued for 30 minutes, and the pH value of the reaction solution was measured to be 6.94. Put the calcium lactate reaction solution into a 50-liter dismantled stainless steel barrel one by one from the bottom valve under heat, seal it and cool it at room temperature in a clean area for 22 hours, then disassemble the stainless steel barrel, break and mix the calcium lactate pentahydrate cylinder According to the test, the content o...

Embodiment 3

[0043]Take 600kg of food-grade lactic acid solution with a mass fraction of 80%, put it into a 1000-liter reaction tank, add 72kg of pure water, and heat the lactic acid solution to a slight boiling state and maintain it through jacket steam under continuous stirring. Add 150 kg of dried calcium oxide powder. During this period, the volatilized water vapor is cooled by the condenser and flows back into the reaction tank. After 115 minutes, the addition of calcium oxide powder was completed, and the reaction was continued for 30 minutes, and the pH value of the reaction solution was measured to be 7.05. Put the calcium lactate reaction solution into a 50-liter dismantled stainless steel barrel one by one from the bottom valve under heat, seal it and cool it at room temperature in a clean area for 24 hours, then disassemble the stainless steel barrel, break and mix the calcium lactate pentahydrate cylinder Detection, calcium lactate pentahydrate content 100.2%. Other physical ...

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Abstract

The invention discloses an energy-saving production method of calcium lactate. The method comprises the following steps: 1) regulating the concentration of a lactic acid solution to 71-72%, heating the lactic acid solution to 98-100 DEG C, and keeping the temperature; 2) adding calcium oxide powder with the molar weight being 1 / 2 of the molar weight of the lactic acid into the lactic acid solutionobtained in step 1) for a reaction, and adjusting the pH of the obtained reaction solution to 6.5-7.5; and 3) carrying out cooling crystallization on a material obtained in step 2), and crushing after the material is completely cured to obtain calcium lactate pentahydrate powder. A certain amount of the lactic acid solution and the calcium oxide powder are used as raw materials, and are reacted and cooled to directly prepare the calcium lactate pentahydrate. A hot air drying procedure of a traditional process is omitted, dust emission is avoided, energy consumption is low, equipment investment is small, and convenience and rapidness are achieved.

Description

technical field [0001] The invention belongs to the field of fine chemical industry, relates to the preparation of calcium lactate, in particular to an energy-saving production method of calcium lactate. Background technique [0002] Commercially available calcium lactate, the expression molecular formula (CH 3 CHOHCOO)2Ca·5H2O, molecular weight 308.3. Calcium lactate is white granule or powder, no peculiar smell, bitter taste. Slightly weathering, soluble in hot water, insoluble in ethanol, ether and chloroform. Calcium lactate has the characteristics of high solubility, fast dissolution rate, and high bioavailability. It is an excellent calcium supplement and can be used as an auxiliary raw material for dairy products, a pharmaceutical raw material or a food additive. The production and sales of domestic food-grade calcium lactate should comply with GB1886.21-2016. [0003] At present, the production process of domestic calcium lactate industry is as follows: [0004]...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C59/08
CPCC07C51/412C07C59/08Y02P20/10
Inventor 张金彬徐仁义邓晓莉任军孙天玮
Owner 武汉三江航天固德生物科技有限公司
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