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Method for synthesizing sodium succinate through solid phase reaction

A technology of sodium succinate and solid phase reaction, which is applied in carboxylate preparation, organic chemistry, etc., can solve the problems of large investment, large workshop area, and high production cost, and achieve simple production process, less equipment investment, and occupied workshop small effect

Inactive Publication Date: 2011-09-07
BEIJING UNIV OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned process mainly has the following defects: (1) waste water and waste residues are generated during the production process; (2) a large amount of energy is required in the product drying process; (3) the yield is low and the production cost is high; (4) the investment is large and it takes up Large plant area

Method used

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  • Method for synthesizing sodium succinate through solid phase reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 1 kg of succinic acid, put it into a small vertical ball mill in the laboratory, adjust the speed to 1200 rpm, add 0.1 kg of NaOH, use water cooling to keep the temperature between 20 ° C and 60 ° C, react for 30 minutes, and then add 0.5 kg Na 2 CO 3 , continue grinding for 65 minutes, add 0.05kgNaOH again, and finish grinding for 40 minutes.

Embodiment 2

[0019] Take 20kg succinic acid and 0.2kgNa 2 CO 3 10H 2 O, put it into a vertical ball mill, adjust the speed to 220 rpm, and add 6kgNa again after grinding for 15 minutes 2 CO 3 , grind for 40 minutes, and use cooling water to lower the temperature at the same time, so that the temperature is controlled below 60 ° C, and then add 6kg Na 2 CO 3 Continue to grind for 30 minutes, and vacuumize to make the vacuum degree 0.08MPa, so that the solid phase reaction can proceed smoothly. Then add 5.9kg Na 2 CO 3 Grinding was finished for 50 minutes.

Embodiment 3

[0021] Add 11.8kg of succinic acid and 0.4kg of NaOH to a 150L vibration mill, keep the temperature below 85°C during the vibration mill, grind for 10 minutes, then add 9.5kg of NaOH 2 CO 3 And 20g acrylic starch, vacuumize, make vacuum degree be 0.03MPa~0.05MPa, finish after 80 minutes of vibratory grinding again, product inspection is qualified.

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Abstract

The invention relates to a method for synthesizing sodium succinate; in the method, succinic acid and sodium hydroxide and / or sodium carbonate are used as raw materials, the raw materials are mixed and ground, and carry out chemical reaction in the solid state to generate sodium succinate directly. According to different devices, the temperature is controlled to be -5 DEG C to 90 DEG C, and the pressure is controlled to be 0.005MPa to 0.1MPa. The used grinding devices are various vibration mills and / or ball mills used for dry grinding. The production technique does not generate waste water and waste residue, and needs no heat source to be added additionly. The method can be used for synthesizing sodium succinate in chemical grade, pharmaceutical grade or food grade.

Description

technical field [0001] The invention relates to a method for synthesizing sodium succinate, in particular to a method for grinding and synthesizing sodium succinate by using succinic acid, sodium hydroxide and / or sodium carbonate in a solid state. Background technique [0002] Succinic acid (C 4 o 4 h 6 , molecular weight is 118) is a kind of organic dibasic acid, can generate acid salt and / or salt when carrying out neutralization reaction with alkali, disodium succinate is colorless to white crystal or crystalline powder, soluble in water, Insoluble in alcohol. The aqueous solution is neutral to slightly alkaline. Because it has a seafood smell similar to shellfish, it is also called scallops and is a food additive of umami. [0003] The traditional process of producing sodium succinate from succinic acid is mainly based on water as the medium. First, solid succinic acid and sodium hydroxide or sodium carbonate are reacted in an aqueous solution, and then filtered, conc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C55/10C07C51/41
Inventor 仝其根于同泉路苹白云起苏亮周敏
Owner BEIJING UNIV OF AGRI