Preparation method of N,N-dimethyl-octan and decan or octan/decan amide, and special device therefore

A special device, dimethyl technology, applied to N, can solve the problems of low gas-liquid-solid three-phase contact efficiency, long reaction time, high energy consumption, etc., achieve high conversion rate and selectivity of reactants, improve selectivity, The effect of low energy consumption

Inactive Publication Date: 2018-02-02
江苏万盛大伟化学有限公司
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in view of the low efficiency of gas-liquid-solid three-phase contact during amidation in the prior art, resulting in long reaction time, high energy consumption, and slow reaction, provide a method that is beneficial to gas, liquid, and solid phases. The preparation method of N,N-dimethyl-octyl, decyl or octyl / decylamide of three-phase amidation reaction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of N,N-dimethyl-octan and decan or octan/decan amide, and special device therefore
  • Preparation method of N,N-dimethyl-octan and decan or octan/decan amide, and special device therefore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] N, the preparation method of N-dimethyl-octane / capric amide comprises the following steps:

[0031] 1) After mixing 150Kg catalyst and 4320Kg caprylic / capric acid evenly, add them into the reactor, replace with nitrogen at least three times, so that the material can be sprayed circularly in the reactor; the circular spray flow rate is 100-200m 3 / h;

[0032] 2) Control the temperature in the reactor to 20-300°C, and keep the material circulating and spraying in the reactor; pass the metered dimethylamine into the reactor, and control the pressure in the reactor to 0.05-0.5MPa; if the pressure is high, reduce Slowly feed the speed of dimethylamine;

[0033] 3) After the water-containing material in the reaction is vaporized and condensed, the generated water is separated through the oil-water separator; the separated water is analyzed by amine to resolve the dimethylamine therein, and is recovered for mechanical use;

[0034] 4) After passing through dimethylamine, kee...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of N,N-dimethyl-octan and decan or octan / decan amide. The method comprises the following steps: 1, adding a catalyst and an acid into a reactor, and carrying out nitrogen displacement; 2, controlling the temperature to keep the circulation ejection of the above obtained material in the reactor, and introducing dimethylamine; 3, separating out generatedwater; and 4, sampling and detecting, continuing a reaction until the acid value is less than 4%, performing filtration and discharging, and performing vacuum reduced-pressure distillation to obtain the finished product. A special device for the preparation device comprises the reactor, a dimethylamine inlet, an oil-water separator and a discharging opening are arranged at the upper part of the reactor, and an injector is arranged at the upper part of the reactor; a circulating pump and a heat exchanger are successively arranged in a closed loop between the reactor and the injector; and a filter is connected between the circulating pump and the heat exchanger. The injection reactor makes reactants fully mixed, so enhancement of mass transfer and heat transfer is facilitated, the reaction rate is accelerated, the concentration and temperature distribution is improved, side reactions are inhibited, and the selectivity of the reaction is improved.

Description

technical field [0001] The invention belongs to the field of organic synthesis, and in particular relates to a preparation method of N, N-dimethyl-octyl, decyl or octyl / decylamide and a special device thereof. Background technique [0002] N, N-dimethyl octanamide, English: N, N-diMethyloctanaMide, molecular formula: C 10 h 21 NO, CAS number: 1118-92-9. [0003] N, N-Dimethyldecanamide, English: N, N-Dimethyldecanamide (N, N-Dimethylcapramide), molecular formula: C 12 h 25 NO, CAS number: 14433-76-2. [0004] N,N-Dimethyl-octyl / decanamide, alias: dimethyloctyl / decanamide, FLAMD-810, English: N,N-Dimethyl(octan / decan)amides, molecular formula: C 10 h 21 NO; CAS No.: 308062-09-1. N,N-Dimethyl-octyl / decylamide is mainly used as a solvent and synergist for pesticide formulations. When the N,N-dimethyl-octyl / decylamide that dissolves the pesticide is diluted in water, it will exhibit the characteristics of a surfactant, and evenly disperse the original pesticide in the wa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C231/02C07C233/05C07C231/24
CPCC07C231/02C07C231/24C07C233/05
Inventor 陈红星黄德周谌建新史豫蒙陈敏锋唐毅
Owner 江苏万盛大伟化学有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products