Method for preparing ethyl caprate, and stirring apparatus for preparing ethyl caprate

A technology of ethyl decanoate and a stirring device, which is applied in the preparation of carboxylic acid esters, the mixer with a rotating stirring device, the preparation of organic compounds, etc., can solve the problems of low stirring efficiency and low yield, and achieve simple structure, More contact surfaces, improve the effect of mixing uniformity

Inactive Publication Date: 2015-02-11
常州市松盛香料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for preparing ethyl caprate and a stirring device for preparing ethyl caprate, which overcomes the defect of low yield due to low stirring efficiency of the stirring device in the prior art

Method used

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  • Method for preparing ethyl caprate, and stirring apparatus for preparing ethyl caprate

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] The preparation method of ethyl decanoate includes the following steps:

[0023] 1) Add decanoic acid and ethanol to the esterification kettle for stirring, control the temperature to 230°C, the pressure at 5MPa, add the catalyst dropwise, keep the reaction for 3 hours, and collect the crude product of ethyl decanoate;

[0024] 2) Distill the crude ethyl decanoate product in a distillation tower with a temperature of 250°C and a pressure of -5MPa for 8 hours to obtain a finished product of ethyl decanoate.

[0025] The molar ratio of capric acid / ethanol is 1:1.2.

[0026] A stirring device for preparing ethyl decanoate, comprising a base 1, a vertical support 2 and a stirring rod 4. The vertical support 2 is arranged on the base, and the vertical support is connected to the stirring rod 4 through a connecting piece 3. The vertical support 2 A lifting device 5 that can lift the connecting piece 3 is provided on the connecting piece 3, a power device 6 for rotating the stirring r...

Embodiment approach 2

[0028] The difference from Embodiment 1 is:

[0029] The preparation method of ethyl decanoate includes the following steps:

[0030] 1) Add decanoic acid and ethanol to the esterification kettle and stir, control the temperature to 450°C and the pressure to 10MPa, add the catalyst dropwise, keep the reaction for 7 hours, and collect the crude product of ethyl decanoate;

[0031] 2) Distill the crude ethyl decanoate product in a distillation tower with a temperature of 400°C and a pressure of 1 MPa for 10 hours to obtain a finished product of ethyl decanoate.

[0032] 2. The method for preparing ethyl capric acid according to claim 1, wherein the molar ratio of capric acid / ethanol is 1:40.

Embodiment approach 3

[0034] The difference from Embodiments 1 and 2 is:

[0035] The preparation method of ethyl decanoate includes the following steps:

[0036] 1) Add capric acid and ethanol to the esterification kettle and stir, control the temperature to 300°C, the pressure at 8MPa, add the catalyst dropwise, keep the reaction for 5 hours, and collect the crude product of ethyl caprate;

[0037] 2) Distill the crude ethyl decanoate product in a distillation tower with a temperature of 350°C and a pressure of -2MPa for 9 hours to obtain a finished product of ethyl decanoate.

[0038] 2. The method for preparing ethyl capric acid according to claim 1, wherein the molar ratio of capric acid / ethanol is 1:11.

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PUM

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Abstract

The invention discloses a method for preparing ethyl caprate, and a stirring apparatus for preparing ethyl caprate. The structure of the apparatus comprises a pedestal, a vertical bracket and a stirring rod, the vertical bracket is arranged on the pedestal, the vertical bracket is connected with the stirring rod through a connecting piece, the vertical bracket is provided with a lifting device for lifting the connecting piece, the connecting piece is provided with a power device for making the stirring rod rotate, the stirring rod is provided with three blades, the three blades are uniformly distributed on the stirring rod in a circumferential manner, and the blades comprise a first blade and second blades connected with the first blade. At least one reinforcing rib is arranged between adjacent second blades, and components are connected through screws and fixed through nuts. The stirring position of the apparatus can be adjusted, so it is in favor of fully stirring a material; and the blades have the characteristics of simple structure, operation safety and large surface of contact with the material, so the material mixing uniformity can be effectively improved, and the stirring efficiency is improved, thereby the yield of ethyl caprate is improved.

Description

Technical field [0001] The invention relates to the technical field of esterification reaction and material mixing, in particular to a method for preparing ethyl decanoate and a stirring device for preparing ethyl decanoate. Background technique [0002] In the traditional production process of ethyl decanoate, due to the large molecular weight of the product and the high viscosity of ethyl decanoate, the esterification reaction is a reversible reaction, which makes the yield of the ester lower. [0003] In the operation of chemical industry, mixing the materials uniformly is the primary condition for improving the product yield. Due to its own fragrance, ethyl decanoate can be added as a spice to wine brewing. However, decanoic acid has 10 C atoms, which makes the ethyl decanoate prepared by it has the characteristics of high viscosity. The existing stirring device uses simple blades as the blades, and its structure is simple, the stirring position is single, and it is located at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/24C07C67/08C07C67/54B01F7/32B01F27/96
CPCB01J19/0066B01J19/18C07C67/08C07C67/54B01J2219/00761C07C69/24
Inventor 徐松浩
Owner 常州市松盛香料有限公司
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