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Industrial preparation method of sodium lactate solution

A technology of sodium lactate solution and lactic acid solution, which is applied in carboxylate preparation, carboxylate preparation, organic chemical methods, etc., and can solve the problems of sodium lactate loss, unfavorable industrial production, and increased decolorization operations, etc.

Pending Publication Date: 2021-05-18
蚌埠丰原涂山制药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But no matter which decolorization process is adopted, the decolorization operation is inevitably increased, which will cause a significant increase in production cost for the industrial production of sodium lactate solution, and the decolorization process will also cause the loss of sodium lactate, which is harmful to industrialization. Production is very unfavorable

Method used

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  • Industrial preparation method of sodium lactate solution
  • Industrial preparation method of sodium lactate solution
  • Industrial preparation method of sodium lactate solution

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Embodiment 1

[0033] This embodiment provides a preparation method of sodium lactate solution. Batch is 2500kg / batch, concentration is the sodium lactate solution of 40%, its industrial production preparation method, comprises the steps:

[0034] Pump 1000kg of lactic acid solution with a concentration of 82% into a 3000L sodium lactate synthetic enamel reaction kettle; add 1200kg of purified water to another 2000L enamel reaction kettle, and add 380kg of sodium hydroxide into the reaction kettle under stirring and cooling , when the temperature of the sodium hydroxide solution drops to 50°C, the sodium hydroxide solution is pumped into the high position of the sodium lactate synthesis enamel reaction kettle through the material pump.

[0035] Turn on the sodium lactate synthesis enamel reaction kettle to stir. At this time, the temperature of the feed liquid in the reactor is 22°C. Fast, when the sodium hydroxide solution is added dropwise to about 2 / 3, the temperature of the feed liquid ...

Embodiment 2

[0039] Batch is 2500kg / batch in the present embodiment, and concentration is the industrialized production preparation method of the sodium lactate solution of 40%, comprises the steps:

[0040]Pump 1000kg of lactic acid solution with a concentration of 82% into a 3000L sodium lactate synthetic enamel reaction kettle; add 1200kg of purified water to another 2000L enamel reaction kettle, and add 380kg of sodium hydroxide into the reaction kettle under stirring and cooling , when the temperature of the sodium hydroxide solution drops to 40°C, pump the sodium hydroxide solution into the high position of the sodium lactate synthesis enamel reaction kettle through the material pump.

[0041] Turn on the sodium lactate synthesis enamel reaction kettle to stir. At this time, the temperature of the feed liquid in the reactor is 20.5°C. Fast, when the sodium hydroxide solution is added dropwise to about 2 / 3, the temperature of the feed liquid in the reactor tends to be stable), and whe...

Embodiment 3

[0045] In the present embodiment, the batch is 2500kg / batch, and the concentration is the industrial production preparation method of the sodium lactate solution of 40%, the steps are as follows:

[0046] Pump 1000kg of lactic acid solution with a concentration of 82% into a 3000L sodium lactate synthetic enamel reaction kettle; add 1200kg of purified water to another 2000L enamel reaction kettle, and add 380kg of sodium hydroxide into the reaction kettle under stirring and cooling , when the temperature of the sodium hydroxide solution drops to 30°C, pump the sodium hydroxide solution into the high position of the sodium lactate synthesis enamel reaction kettle through the material pump.

[0047] Turn on the sodium lactate synthesis enamel reaction kettle and stir. At this time, the temperature of the feed liquid in the reactor is at 21°C. Control the temperature of the feed liquid in the reactor within 35°C and slowly add sodium hydroxide solution (the temperature of the feed...

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Abstract

The invention belongs to the technical field of organic chemical synthesis, and particularly discloses an industrial preparation method of a sodium lactate solution. By controlling the reaction temperature of lactic acid and a sodium hydroxide solution, generation of pigment impurities in the reaction process can be avoided, a qualified sodium lactate solution product can be obtained without decoloring treatment in the later period, the production process is simplified on the premise of ensuring the product quality, the production cost of the sodium lactate solution is reduced, meanwhile, finished product loss caused by adsorption decoloration is avoided, and the product yield is guaranteed. According to the invention, a simple production mode is adopted, the color of the final product can be controlled by controlling the reaction temperature, the finished product feed liquid can be directly filtered and filled without decoloring treatment, and the method is simple and easy to implement, high in product yield and suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of organic chemical synthesis, in particular to an industrial preparation method of sodium lactate solution. Background technique [0002] Sodium lactate, the chemical name is 2-hydroxypropionic acid monosodium salt, the molecular formula is C 3 h 5 o 3 Na, molecular weight 112.06, structural formula as follows: [0003] [0004] Sodium lactate solution has a wide range of medicinal uses, and can be used to regulate and correct metabolic acidosis, relieve dehydration caused by diarrhea, and poisoning caused by diabetes and gastritis, and sodium lactate solution is also a good drug for supplementing metal elements. At present, sodium lactate solution with a content of 40% is generally required in the market, and a few enterprises require sodium lactate solution with a content of 60% or above. [0005] The preparation of sodium lactate solution is mainly made by reacting lactic acid with sodium hydroxid...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C59/08B01J4/00G05D21/02
CPCC07C51/412B01J4/008G05D21/02C07B2200/07C07C59/08
Inventor 张祖杨李昌文胡志国许祥雷
Owner 蚌埠丰原涂山制药有限公司
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