Purification technology of tetradecanal

A technology of myristaldehyde, which is applied in the field of purification of myristaldehyde, can solve the problems of high water content, etc., and achieve the effects of increasing the content, improving the safety production factor, and reducing the boiling point

Inactive Publication Date: 2015-02-11
华玉叶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many defects in many fuels in the prior art, such as the fuel used in the prior art, wherein crude methanol...

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] A purification process of tetradecanal, prepared by condensation reaction of α-ionone, dissolving sodium methoxide in a solvent, gradually adding a mixed solution of α-ionone and ethyl chloroacetate, then hydrolyzing with liquid alkali, and then using Dichloromethane extraction, conventional pickling and salt washing of the oil phase, desolventization, distillation of tetradecaldehyde, and purification, the crude product containing tetradecaldehyde and low boiling substances is injected into the rectification tower through a preheater In the tower kettle, heating and reflux is carried out through the falling film reboiler, and the rectification tower is operated under reduced pressure; water vapor is introduced from the top of the falling film reboiler, and the side line discharge starts, and the rectification tower top discharge and the tower kettle discharge, ten Four aldehydes are separated through the packing in the rectification tower, the distillate obtained from t...

Embodiment 2

[0027] A purification process of tetradecanal, prepared by condensation reaction of α-ionone, dissolving sodium methoxide in a solvent, gradually adding a mixed solution of α-ionone and ethyl chloroacetate, then hydrolyzing with liquid alkali, and then using Dichloromethane extraction, conventional pickling and salt washing of the oil phase, desolventization, distillation of tetradecaldehyde, and purification, the crude product containing tetradecaldehyde and low boiling substances is injected into the rectification tower through a preheater In the tower kettle, heating and reflux is carried out through the falling film reboiler, and the rectification tower is operated under reduced pressure; water vapor is introduced from the top of the falling film reboiler, and the side line discharge starts, and the rectification tower top discharge and the tower kettle discharge, ten Four aldehydes are separated through the packing in the rectification tower, the distillate obtained from t...

Embodiment 3

[0029] A purification process of tetradecanal, prepared by condensation reaction of α-ionone, dissolving sodium methoxide in a solvent, gradually adding a mixed solution of α-ionone and ethyl chloroacetate, then hydrolyzing with liquid alkali, and then using Dichloromethane extraction, conventional pickling and salt washing of the oil phase, desolventization, distillation of tetradecaldehyde, and purification, the crude product containing tetradecaldehyde and low boiling substances is injected into the rectification tower through a preheater In the tower kettle, heating and reflux is carried out through the falling film reboiler, and the rectification tower is operated under reduced pressure; water vapor is introduced from the top of the falling film reboiler, and the side line discharge starts, and the rectification tower top discharge and the tower kettle discharge, ten Four aldehydes are separated through the packing in the rectification tower, the distillate obtained from t...

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PUM

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Abstract

The invention discloses a purification technology of tetradecanal. The purification technology comprises the steps of preparing from alpha ionone by condensation reaction, dissolving sodium methylate into a solvent, gradually feeding the mixed solution of the alpha ionone and ethyl chloroacetate into the solution, carrying out hydrolysis with liquid caustic soda, extracting with dichloromethane, carrying out conventional acid washing and salt washing on the oil phase, and desolventizing and distilling the tetradecanal. Therefore, the purification technology has remarkable social benefit and economic benefit.

Description

technical field [0001] The invention relates to a process for purifying myristaldehyde used in antifreeze liquid for mechanical processing. Background technique [0002] Tetradecaldehyde: CAS No.: 104-67-6; Molecular formula C11H20O2; Molecular weight 184.28; In addition to artificial synthesis, it also exists in peaches and almonds. Appearance and Properties: Appearance: Colorless clear liquid. Has a strong peach and almond-like aroma. Refractive index (20°C): 1.449--1.454; boiling point (°C): 286; relative density (water = 1): 0.940--0.945; flash point (°C): greater than 100; solubility: insoluble in water and glycerin, Soluble in propylene glycol. For food flavor. . [0003] Tetradecaldehyde Chemical Properties Colorless to light yellow slightly viscous transparent liquid. Has a strong peach-like aroma. The boiling point is 297°C; the flash point is 137°C. Soluble in ethanol (1ml in 5mL of 60% ethanol), benzyl alcohol, benzyl benzoate, propylene glycol, lye, most ...

Claims

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Application Information

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IPC IPC(8): C07C45/82C07C47/02
CPCC07C45/82C07C45/455C07C2601/16C07C47/225
Inventor 华玉叶
Owner 华玉叶
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