One-pot production process of methyl isopropyl ketone

A technology for the production of methyl isopropyl ketone, which is applied in the preparation of carbon-based compounds, the preparation of organic compounds, and organic chemistry, and can solve the problems of increasing sewage treatment costs, inability to carry out condensation reactions, and affecting product yields. Achieve the effects of reducing processing difficulty, improving cost advantages, and shortening reaction time

Pending Publication Date: 2022-06-07
李昌龙
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Since a large amount of polymers will be produced in the condensation reaction of this process, the product yield will be seriously affected;
[0005] (2) Due to the step-by-step reaction, more equipment is needed, resulting in a substantial increase in equipment investment;
[0006] (3) The reaction time is long, at least 10 hours or more;
[0007] (4) Since the condensation product is slightly soluble in water, the water layer needs to be extracted with toluene after stratification, so that there is a small amount of toluene in the sewage, which increases the cost of sewage treatment
[0008] Although there is a "one pot cooking" reaction method recorded in the literature, adding all the materials together will cause the disproportionation reaction between formaldehyde and sodium hydroxide, so that the sodium hydroxide will be consumed, resulting in the inability of the normal condensation reaction, even if there is a conversion reaction rate is very low

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
  • One-pot production process of methyl isopropyl ketone
  • One-pot production process of methyl isopropyl ketone
  • One-pot production process of methyl isopropyl ketone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 methyl isopropyl ketone one-pot cooking production process, the specific method is as follows:

[0033] (1) Add 1300kg of butanone, 15k g of palladium carbon and 30k g of alkaline catalyst to the hydrogenation reactor, and after replacing the nitrogen and hydrogen to the reactor without air residue, the pressure in the reactor is raised to 1MPa with hydrogen, and the material in the reactor is heated to 80 °C;

[0034] (2) Open the reactor stirring, pump the formaldehyde aqueous solution into the hydrogenation reactor at a flow rate of 50L / min, and control the reaction temperature of 80 °C and the reaction pressure of 1MPa;

[0035] (3) Control formaldehyde addition time is completed within 3 hours;

[0036] (4) After the end of the reaction, the material in the reactor is pressed out, and after layering, the organic layer is distilled, and the product is 1164k g of methyl isopropyl ketone, and the yield of methyl isopropyl ketone is 75% (measured in butanone), an...

Embodiment 2

[0037]Example 2 methyl isopropyl ketone one pot cooking production process, the specific method is as follows:

[0038] (1) Add 1300kg of butanone, 15kg of palladium carbon and 30kg of alkaline catalyst to the hydrogenation reactor, and after replacing the nitrogen and hydrogen to the reactor without air residue, the pressure in the reactor is raised to 1MPa with hydrogen, and the materials in the reactor are heated to 80 °C required for the reaction;

[0039] (2) Open the reactor stirring, the formaldehyde aqueous solution according to the flow rate of 30L / min through the high metering tank drops into the hydrogenation reactor, while controlling the reaction temperature of 80 °C, control the reaction pressure of 1MPa;

[0040] (3) Control formaldehyde addition time is completed within 4 hours;

[0041] (4) After the end of the reaction, the material in the reactor is pressed out, and after layering, the organic layer is distilled, and 1164kg of methyl isopropyl ketone is 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 discloses a one-pot production process of methyl isopropyl ketone, and relates to the field of chemical synthesis. The process comprises the following steps: adding a certain amount of butanone, palladium on carbon and a basic catalyst into a hydrogenation reaction kettle, after nitrogen and hydrogen are replaced until no air is left in the reaction kettle, increasing the pressure in the reaction kettle to a certain pressure by using hydrogen, and heating the materials in the reaction kettle to a temperature required by reaction; starting the reaction kettle for stirring, adding the formaldehyde aqueous solution into the hydrogenation reaction kettle, and controlling the reaction temperature and the reaction pressure at the same time; the addition time of the formaldehyde is controlled within 1-10 hours; and after the reaction is finished, pressing out the materials in the reaction kettle, layering, rectifying an organic layer, obtaining a finished product, and packaging. The method has the beneficial effects that the process flow can be shortened, the energy consumption and the equipment investment are reduced, and the wastewater amount is reduced; the reaction yield is improved, and safety and controllability are realized.

Description

Technical field [0001] The present invention relates mainly to the field of chemical synthesis, specifically a production process of methyl isopropyl ketone one-pot cooking. Background [0002] Methyl isopropylone, Chinese alias: 1,1-Dimethylacetone; 3-Methyl-2-butanone; 3-Methylbutanone; Isopropyl methyl ketone; 3-Methyl-2-butanone; Methyl isopropyl ketone; Methyl isopropyl ketone / 3-methyl-2-butanone; Methyl isopropyl methyl ketone / 3-methyl-2-butanone. English name: Methyl Isopropyl Ketone, EINECS: 209-264-3, CAS NO.: 563-80-4, molecular formula: C5H10O, molecular weight: 86.13, mainly used as a dye intermediate, and can be used in pharmaceutical, pesticide, textile, paint, mineral processing and other industries. [0003] The method of synthesizing methyl isopropyl ketone in the prior art, including butanone methanol method, butanone formaldehyde method and the like. Among them, the existing butanone formaldehyde method to synthesize methyl isopropyl ketone is generally for but...

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 Applications(China)
IPC IPC(8): C07C45/73C07C49/04C07C45/75C07C49/203C07C45/62
CPCC07C45/73C07C45/75C07C45/62C07C49/04C07C49/203Y02P20/584
Inventor 李昌龙
Owner 李昌龙
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