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Method of preventing generation of heavy ingredient of methyl ethyl ketone

A butanone and heavy technology, which is applied in the separation/purification, fractionation, organic chemistry, etc. of carbonyl compounds, can solve the problems of increasing heavy components and failing to meet product specifications, and achieve the effect of preventing dimerization

Active Publication Date: 2013-07-24
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 1. Heavy components increase during storage in storage equipment, sometimes failing to meet product specifications

Method used

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  • Method of preventing generation of heavy ingredient of methyl ethyl ketone
  • Method of preventing generation of heavy ingredient of methyl ethyl ketone
  • Method of preventing generation of heavy ingredient of methyl ethyl ketone

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Embodiment Construction

[0022] The best way to practice the invention

[0023] The method for preventing the production of heavy components of methyl ethyl ketone according to the present invention is characterized in that a dimerization-preventing material is used on at least the surface in contact with methyl ethyl ketone in the purification facility or storage facility of methyl ethyl ketone.

[0024] Fig. 1 is a schematic flow chart showing the purification steps of methyl ethyl ketone. Figure 1 shows the figure 2 The dehydration column 30 is shown as a purification step of butanone dehydrated.

[0025] The dehydrated methyl ethyl ketone is distilled through the purification tower 40 and recovered in the form of gas from the top of the tower. The gaseous methyl ethyl ketone is cooled and liquefied by the condenser 42 and stored in the receiver 44 . The methyl ethyl ketone accumulated in the receiver 44 is sent again to the purification column 40 as needed, and heavy components are removed unti...

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PUM

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Abstract

A method of preventing the generation of a heavy ingredient of methyl ethyl ketone in which a dimerization-preventive material is used at least as that surface of a purification apparatus or storage apparatus (50) which is in contact with methyl ethyl ketone. The dimerization-preventive material for use in the purification apparatus preferably is stainless steel, while the dimerization-preventive material for use in the storage apparatus (50) preferably is zinc or aluminum.

Description

technical field [0001] The present invention relates to a method for preventing the formation of heavies of methyl ethyl ketone. More specifically, it relates to a method for preventing production of heavy components due to dimerization of methyl ethyl ketone when producing or storing methyl ethyl ketone, and a purification facility or storage facility for methyl ethyl ketone. Background technique [0002] Butanone (MEK) is mainly a compound useful as a solvent, and can be synthesized by dehydrogenation of 2-butanol (for example, refer to Non-Patent Document 1). Hereinafter, the preparation steps of butanone will be briefly described. [0003] Fig. 1 is a schematic flow chart showing the production steps of butanone. [0004] The raw material 2-butanol (marked as SBA in the figure) undergoes a dehydrogenation reaction in the dehydrogenation reaction tower 10 to generate butanone (marked as MEK in the figure). Next, the raw material and methyl ethyl ketone are sent to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C45/78C07C49/10B01D3/14
CPCC07C49/10C07C45/78B01D3/14
Inventor 内山正一
Owner IDEMITSU KOSAN CO LTD
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