Device and method for producing methyl isobutyl ketone (MIBK) by using acetone (AC)

A technology for acetone and products, applied in the field of production devices of methyl isobutyl ketone, can solve the problems of inability to separate IPA, waste a lot of energy, and the separation system cannot operate smoothly, and achieves the advantages of stable operation, improved yield, The effect of improving competitiveness

Active Publication Date: 2013-07-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] The technical problem to be solved by the present invention is to provide a device for producing methyl isobutyl ketone from acetone in view of the problem that IPA cannot be separated from the system in the prior art, causing the separation system to operate smoothly and waste a lot of energy

Method used

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  • Device and method for producing methyl isobutyl ketone (MIBK) by using acetone (AC)
  • Device and method for producing methyl isobutyl ketone (MIBK) by using acetone (AC)
  • Device and method for producing methyl isobutyl ketone (MIBK) by using acetone (AC)

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Embodiment 1

[0072] The process adopted by the embodiment is figure 1 Introduced process.

[0073] 1, the situation of the raw material used in embodiment

[0074] Table 1 is composed of raw materials sent from the reaction system to the separation system.

[0075] Table 1 Raw material composition

[0076] name

Composition, wt%

h 2 o

4.71

2-MPA

0.54

AC

69.51

IPA

0.66

MIBK

24.02

DIBK

1.10

TMB

0.50

[0077] total

100％

[0078] 2. Device introduction

[0079] The material that comes out from the hydrogen separator first enters the 2-methylpentane tower 1, and the 2-MPA tower includes the feed line from the hydrogen separator to the 2-MPA tower 1, and the overhead product is removed from the device, and the overhead product passes through After condensation, a part of condensed tower top product is fed to acetone extraction tower 2 by pipeline; Acetone ext...

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Abstract

The invention relates to a method for producing methyl isobutyl ketone (MIBK) by using acetone (AC). An isopropyl alcohol (IPA) removing tower and a wastewater tower are added on the basis of the prior art; when the content of IPA in recovered AC is an arbitrary value in the range of 0.3 to 3 percent, the recovered AC is fed into the IPA removing tower to remove the IPA; when the content of the IPA in the recovered AC is less than 0.3 percent and is not increased any more, the recovered AC is directly fed into a reaction system; and part of oil phases of a phase separator on the top of an MIBK dehydrating tower and a product on the top of the wastewater tower are fed into the IPA removing tower to recover the AC and the MIBK. The aim can be fulfilled only by increasing less investment, the smooth operation of a production device is facilitated, the recovery rate of the AC and the yield of the MIBK are improved, and the consumption of the AC and energy is reduced, so that the production cost of the product is reduced, and the competitiveness of the product and the economic benefit of enterprises are improved.

Description

technical field [0001] The invention relates to a device and method for producing methyl isobutyl ketone (MIBK) from acetone (AC), in particular to a device and method for producing purified methyl isobutyl ketone. Background technique [0002] Methyl isobutyl ketone (4-methylpentanone-2, methyl isobutyl ketone referred to as MIBK), is a medium-boiling solvent with a wide range of uses, mainly used in nitrocellulose, polyvinyl chloride, polyvinyl acetate, poly Styrene, epoxy resin, natural and synthetic rubber, solvent for paint, paint and oil dewaxing, coloring agent for color film, also used as extractant for penicillin fermentation broth and separating agent for some organic salts, and it is also Rubber antioxidant 4020 and some main raw materials for organic synthesis. [0003] The traditional production method of MIBK is a three-step method: [0004] The first step: two molecules of acetone are condensed under the action of a basic catalyst to generate one molecule of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C49/04C07C45/78C07C45/82C07C45/62
Inventor 艾抚宾王春梅郭长新乔凯宋丽芝王海波勾连科侯学伟许良
Owner CHINA PETROLEUM & CHEM CORP
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