Production method for natural benzaldehyde

A production method and technology of benzaldehyde, applied in chemical instruments and methods, preparation of organic compounds, separation/purification of carbonyl compounds, etc., can solve the problems of low production efficiency and high energy consumption, and achieve increased production rate and production efficiency , the effect of energy consumption reduction

Active Publication Date: 2011-03-16
肇庆市高要华新香料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The natural benzaldehyde product obtained by this traditional process is high in quality and

Method used

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  • Production method for natural benzaldehyde
  • Production method for natural benzaldehyde
  • Production method for natural benzaldehyde

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment one: adopt method of the present invention to produce natural benzaldehyde

[0020] 1000 kilograms of concentration are 2.5% sodium carbonate aqueous solution to join in reactor 1, be heated to boiling, pass through high-pressure feed pump 3 and feed pipe 4 from header tank 2 then, according to the drip rate of 30 kilograms per hour, continue to The cinnamaldehyde raw material was added into the reaction kettle 1, and the reaction was continued for 20 hours at a temperature of 100° C. to 106° C.

[0021] The steam containing the natural benzaldehyde product generated by the reaction enters the first-stage condenser 6 through the first-stage steam riser 5 for cooling, and the temperature of the first-stage condenser 6 is controlled within the range of 65°C to 85°C, approximately 70% of the steam is cooled in the first stage condenser 6. The oil-water mixture obtained after cooling flows into the first-stage oil-water separator 7 for layer separation, and the ...

Embodiment 2

[0025] Embodiment two: adopt existing technology to produce natural benzaldehyde

[0026] 1000 kilograms of concentration of 2.5% sodium carbonate aqueous solution is added to the reactor 21, heated to boiling, then 600 kilograms of cinnamaldehyde is added to the reactor 21 from the head tank 22 through the feed pipe 23, and heated at 100 ° C to 106 °C for 20 hours.

[0027] The steam generated by the reaction and containing the natural benzaldehyde product enters the condenser 25 through the steam riser 24 for cooling, and the temperature of the condenser 25 is controlled within the range of 40°C to 50°C. The oil-water mixture obtained after cooling flows into the oil-water separator 26 for layer separation, and the separated lower oil layer product flows into the product receiver 27 for collection, while the upper water layer flows back to the reactor 21 through the return pipe 28 for reuse.

[0028] After the reaction, after detection, the natural benzaldehyde crude produc...

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Abstract

The invention discloses a production method for natural benzaldehyde, comprising the following steps: putting cinnamyl aldehyde and an alkaline aqueous solution into a reactor, causing the cinnamyl aldehyde and the alkaline aqueous solution to be subject to anti-aldolisation, carrying out sectional type temperature control and cooling on natural benzaldehyde-containing steam generated by the reaction through a tertiary condensation system, and then collecting products in a product receiver. In the production method for the natural benzaldehyde, the tertiary condensation system is adopted to substitute for the single condensation device in the prior art, thereby improving the production efficiency, reducing the energy consumption and overcoming the defects of the existing production methodfor the natural benzaldehyde on the premise of ensuring the natural degree and pure smell of the nature benzaldehyde.

Description

technical field [0001] The present invention relates to a kind of production method of natural benzaldehyde, more specifically, the present invention relates to a kind of method that adopts three-stage condensation system to produce natural benzaldehyde. Background technique [0002] Natural benzaldehyde is a colorless or light yellow liquid with a bitter almond aroma, mainly found in cinnamon oil, bitter almond oil, almond oil, neroli oil and other aromatic essential oils, used in spices, pharmaceuticals, and daily chemicals , Feed and food processing and other fields have a wide range of applications. However, in developed countries such as the United States and the European Community, the use of benzaldehyde synthesized by chemical methods in the food and pharmaceutical industries is strictly prohibited. Therefore, natural benzaldehyde has a wider range of applications and greater market demand. At present, the preparation of natural benzaldehyde is mainly based on cinna...

Claims

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Application Information

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IPC IPC(8): C07C47/54C07C45/67C07C45/81
Inventor 李乐黄亚东邹志平阮爱民
Owner 肇庆市高要华新香料有限公司
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