A kind of technique of coproducing methyl butynol and diacetone alcohol

A technology of methyl butynol and water-containing methyl butynol is applied in the technical field of co-production of methyl butynol and diacetone alcohol, which can solve the problems of inability to produce methyl butynol and the like, and improve the utilization rate of the device. and market adaptability, reducing fixed investment and production costs, and increasing economic benefits

Active Publication Date: 2020-12-18
SOUTHWEST RES & DESIGN INST OF CHEM IND
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technical methods cannot produce methyl butynol products

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve 2 mol of acetylene in 6 mol of acetone to form an acetylene acetone solution with a molar ratio of 1:3, inject acetylene acetone liquid, 6 mol of liquid ammonia, and 7.3 g of 42% sodium hydroxide (0.6% of the mass of the reaction solution in terms of alkali) into the reaction In the container, the reaction temperature was 40°C, and the reaction was carried out for 1.5 hours. Ammonium sulfate was added to consume the alkali to terminate the reaction. The reaction liquid enters the atmospheric flash tower to remove acetylene and ammonia, adjusts the pH of the deaminization liquid to about 6, enters the falling film evaporator to remove potassium sulfate and tar, and then the gas-liquid mixture enters the acetone tower to remove acetone, and the liquid in the bottom of the tower Enter the crude acetylenic alcohol tower, produce water-containing methyl butynol at the top of the tower, go to the diacetone alcohol tower in the bottom of the tower, and obtain diacetone...

Embodiment 2

[0030] 2mol of acetylene is dissolved in 6mol of acetone, and is configured into an acetylene acetone solution with a molar ratio of 1:3, and 5.8 g of acetylene acetone liquid and 42% sodium hydroxide (0.6% of the reaction liquid mass in terms of alkali) are injected into the reactor, and the reaction The temperature was 40°C, and the reaction was carried out for 4.5 hours. Ammonium sulfate was added to consume the alkali to terminate the reaction. The reaction solution enters the atmospheric flash tower to remove acetylene and ammonia, adjusts the pH of the deammonization liquid to about 6, enters the falling film evaporator to remove potassium sulfate and tar, and the gas-liquid mixture enters the acetone tower to remove acetone, and the liquid in the bottom of the tower Enter the crude acetylenic alcohol tower, produce water-containing methyl butynol at the top of the tower, go to the diacetone alcohol tower in the bottom of the tower, and obtain diacetone alcohol product th...

Embodiment 3

[0034]Dissolve 2 mol of acetylene in 40 mol of acetone, configure the acetylene acetone solution with a molar ratio of 1:20, inject acetylene acetone solution, 4.5 mol of methanol, and 48.4 g of 48% potassium hydroxide (0.8% of the mass of the reaction solution in terms of alkali) into the reaction In the container, the reaction temperature was 20°C, and the reaction was carried out for 2.5 hours. Potassium phosphate was added to consume alkali to terminate the reaction. The reaction liquid enters the atmospheric flash tower to remove acetylene and ammonia, adjusts the pH of the deammonization liquid to about 6, enters the weight removal tower to remove potassium phosphate and tar, and the light component mixture enters the acetone tower to remove acetone, and the tower bottom liquid enters The crude acetylenic alcohol tower, distill out the water-containing methyl butynol, remove the diacetone alcohol tower from the bottom of the tower, rectify under reduced pressure to obtain...

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 provides a novel technology for co-producing methylbutynol and diacetone alcohol, and belongs to the technical field of fine chemical preparation. The technology comprises the followingsteps: taking acetylene and acetone as raw materials, preparing methylbutynol and diacetone alcohol reaction fluid under the catalytic action of a basic catalyst, neutralizing the basic catalyst to stop reaction, rectifying the reaction fluid to remove light components, tar and salt, and continuously rectifying to obtain water-containing methylbutynol and a diacetone alcohol product, and dewatering the water-containing methylbutynol to obtain a methylbutynol product. The total yield to acetone by the two products reaches 93 percent, the yield to acetylene by the methylbutynol reaches 92 percent, and the mole ratio of the diacetone alcohol to the methylbutynol can be adjusted within 10:1. The technology can co-produce two high value-added fine chemicals, namely methylbutynol and diacetone alcohol, and further has the advantages of low production cost, high device utilization, high market strain capacity, good economic benefit, energy saving, environmental protection and the like.

Description

technical field [0001] The invention belongs to the technical field of fine chemical preparation, and specifically relates to a process for co-producing methyl butynol and diacetone alcohol. Background technique [0002] Methylbutynol (2-methyl-3-butyn-2-ol) is an important raw material for the production of vitamin A, vitamin E, essence citral, herbicide pentoxychlor, and pyrethroid insecticides. Alkyne group-C≡CH and polar group-OH, and are widely used in the fields of corrosion inhibition, food, medicine, coatings and other chemical products. Diacetone alcohol is an important intermediate for the preparation of mesityl oxide, methyl isobutyl ketone, methyl isobutyl alcohol, phorone, isophorone and other products, and its low toxicity and high solubility are widely used in composite materials On the one hand, it is a good solvent for cellulose acetate, esterified cellulose, celluloid, etc. It can also be used as a raw material for dyes, paint thinners, wood stains, and ru...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C07C27/00C07C29/42C07C33/042C07C45/72C07C49/17
CPCY02P20/10
Inventor 李杰灵陶川东周飞赖崇伟蒋乐乐余维新
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap