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Preparation method and production equipment of furanone

A production equipment and furanone technology are applied in the field of furanone preparation, which can solve the problems of low furanone yield and efficiency, and achieve the effects of improving purity, improving yield and efficiency, and improving extraction efficiency.

Pending Publication Date: 2022-08-09
福建省沙县青州日化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the actual production process, aceguvaldehyde and zinc powder are used to react reduction coupling to obtain hexanedione, and then furanone is obtained through cyclization. The yield and efficiency of furanone in the existing furanone preparation process are relatively low , in view of this technical problem, those skilled in the art urgently need to develop a kind of preparation method of furanone and its production equipment

Method used

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  • Preparation method and production equipment of furanone
  • Preparation method and production equipment of furanone
  • Preparation method and production equipment of furanone

Examples

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preparation example Construction

[0037] A preparation method of furanone, the preparation method comprises the following steps:

[0038] S1, prepare hexanedione solution: add quantitative glyoxal and acetic acid to the reaction kettle in turn and stir and mix, add quantitative zinc powder to the reaction flask after mixing, and stir and dissolve while adding, while maintaining the reaction flask during the addition process. The temperature is in the range of 25 to 40 ° C, and after the addition and dissolution are completed, the intermediate product hexanedione solution is obtained;

[0039] S2, hexanedione purification: adding sodium sulfate to the hexanedione solution prepared in step S1, centrifuging, adding ethyl acetate extractant to the separated liquid phase for extraction, and extracting in an extraction device to obtain an extraction solution, followed by The extraction solution is introduced into the evaporative concentration device 1 for oil phase evaporation and concentration, and ethyl acetate an...

Embodiment 1

[0066] A preparation method of furanone, the preparation method comprises the following steps:

[0067] S1, prepare hexanedione solution: add quantitative glyoxal and acetic acid to the reaction kettle in turn and stir and mix, add quantitative zinc powder to the reaction flask after mixing, and stir and dissolve while adding, while maintaining the reaction flask during the addition process. The temperature is in the range of 30°C, after adding and dissolving, the intermediate product hexanedione solution is obtained;

[0068] And the process of adding zinc powder is as follows: after stirring and mixing glyoxal and acetic acid for 15min, add 1 / 3 amount of zinc powder and stir and mix until completely dissolved, then let stand for 8min, add 1 / 3 amount of zinc powder again and stir and mix After it is completely dissolved, let it stand for 10 minutes, and finally add the remaining 1 / 3 of the zinc powder, stir and mix until it is completely dissolved, and the temperature of the ...

Embodiment 2

[0078] This embodiment is used on the basis of Embodiment 1:

[0079] The working principle of the drive mechanism 14 is as follows: the drive motor 142 is activated, and the drive motor 142 rotates to drive the drive bevel gear 143 to rotate, thereby simultaneously driving two sets of driven bevel gears 144 to rotate, and a set of driven bevel gears 144 to drive the rotating rod 132 to rotate, so as to achieve When the liquid to be evaporated is transported, another set of driven bevel gears 144 rotates to drive the connecting pipe 1341 and the liquid spray pipe 1342 to rotate, so that the liquid spray pipe 1342 and the liquid spray head 1343 can rotate 360 ​​degrees to achieve a large-scale and uniform liquid spray. Make the distribution of evaporating liquid more uniform.

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Abstract

The invention relates to the technical field of furanone production, in particular to a furanone preparation method and production equipment thereof.The furanone preparation method comprises the steps of hexanedione solution preparation, hexanedione purification and furanone semi-finished product preparation, specifically, the purified hexanedione is added into a sodium dihydrogen phosphate solution, stirring, mixing and dissolving are conducted, acetic acid is added to adjust the PH value of the solution, and a furanone semi-finished product is obtained; after the cyclization reaction is completed, standing and cooling for a period of time at normal temperature, and separating out an oil phase and a water phase; concentrating the oil phase through an evaporation concentration device to recover butyl acetate; according to the furanone preparation process, the reaction temperature is kept within the range of 25-40 DEG C in the adding process of the zinc powder, then the situation that the final product is affected due to the fact that the temperature of a reaction system rises to the deterioration temperature is prevented, the yield of furanone is guaranteed, meanwhile, in the purification step of hexanedione, sodium sulfate powder is added, and the yield of furanone is improved. The extraction efficiency is improved, and the purity of an intermediate product hexanedione is obviously improved, so that the yield and efficiency of furanone are improved.

Description

technical field [0001] The invention relates to the technical field of furanone preparation, in particular to a preparation method of furanone and production equipment thereof. Background technique [0002] Furanones are naturally found in strawberries, oats, cheese, boiled beef, beer, cocoa, coffee, tea, mango, lychee, malt, gooseberries, grapes, heated beef, pineapple, etc. In 1965, in the ether extraction of pineapple juice The furanone was isolated from the liquid for the first time, and its molecular structure was determined. The furanone synthesized with it has the advantages of simple process, low cost and pure aroma. [0003] At present, in the actual production process, hexanedione is obtained by reaction reductive coupling of glyoxal and zinc powder, and then furanone is obtained by cyclization. The yield and efficiency of furanone in the existing furanone preparation process are relatively low. , for this technical problem, those skilled in the art need to devel...

Claims

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Application Information

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IPC IPC(8): C07D307/60B01D1/20B01D1/30B01D11/04B01J19/00
CPCC07D307/60B01J19/0053B01D1/20B01D1/30B01D11/04
Inventor 邱妮
Owner 福建省沙县青州日化有限公司
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