Method for preparing vanillin through sodium isoeugenol process
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A technology for isoeugenol and vanillin, which is applied in the field of vanillin preparation by sodium isoeugenol method, can solve the problems of complex vanillin production process, low purity, difficulty in conformity and the like, and achieves convenient and simple preparation, high purity, Easy to operate effect
Inactive Publication Date: 2014-10-08
安徽佑骏商品混凝土有限公司
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From 1993 to 2002, the average annual growth rate of China's vanillin export volume was 12%. The traditional production process of van
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[0014] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0015] A method for preparing vanillin by isoeugenol sodium method, comprising the following processing steps,
[0016] a. Sodium isoeugenate and water are mixed and added to the oxidation reaction kettle for oxidation reaction.
[0017] b. Connect the top of the oxidation reactor to the gas pipe and input ozone.
[0018] c. Increase the rate of ozone to drive the liquid in the oxidation reactor to stir and stir to carry out the liquid phase oxidation reaction.
[0019] d. Put the liquid after oxidation into stratification, and then add sodium sulfite solution to decompose ozonide. The generated waste water is input into the recovery tank for decomposition, and then discharged after being non-toxic to ensure safety.
[0020] e. neutralize the o...
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Abstract
A method for preparing vanillin through a sodium isoeugenol process relates to the technical field of the chemical industry. The method comprises the following steps: mixing sodium isoeugenol and water, adding the obtained mixture into an oxidation reaction kettle, carrying out an oxidation reaction, connecting with a vent pipe to input ozone, increasing the ozone rate to drive the stirring and overturning of a liquid in the oxidation reaction kettle in order to carry out a liquid phase oxidation reaction, layering the liquid obtained after the liquid phase oxidation reaction, adding a sodium sulfite solution to decompose ozonides, neutralizing the ozonides, washing with water to obtain crude vanillin, adding to a refining kettle, carrying out refining crystallization, drying to obtain finished vanillin, packaging and warehousing. The method has the advantages of convenient and simple preparation, environmental protection, no pollution, less equipment investment, high purity and convenient operation, and the prepared vanillin has the advantages of good use effect, safety and reliability.
Description
technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing vanillin by the sodium isoeugenol method. Background technique [0002] Vanillin, also known as vanillin, is a widely used edible spice, which can be found in the seeds of vanilla or artificially synthesized, and has a strong milky aroma. It is widely used in various flavored foods that need to increase the milk flavor, such as cakes, cold drinks, chocolate, candy; it can also be used in soap, toothpaste, perfume, rubber, plastic, and pharmaceuticals. Vanillin is one of the important food spices, and it is a food flavoring agent. It has vanilla bean aroma and strong milky aroma. It is an indispensable and important raw material in the food additive industry. It is widely used in various needs to increase milky aroma. Flavoring food, such as cakes, cold drinks, chocolate, candy, biscuits, instant noodles, bread and tobacco, flavored wine, toothpas...
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