Method for co-producing methyl isobutyl ketone and methyl isobutyl carbinol

A technology of methyl isobutyl ketone and methyl isobutyl, which is applied in the field of producing methyl isobutyl ketone, can solve the problems of low selectivity and low output of methyl isobutyl carbinol, and achieve high product yield , high utilization rate and reasonable process layout

Active Publication Date: 2015-12-16
ZHEJIANG XINHUA CHEM +1
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Problems solved by technology

[0007] Methyl isobutyl carbinol is industrially a by-product of the process of preparing methyl isobutyl ketone from acetone. However, the selectivity and yield of methyl isobutyl carbinol produced by this process are very low, and it has been impossible to produce methyl isobutyl carbinol. To meet the increasing demand in the current market, it is urgent to develop a process for the production of methyl isobutyl carbinol

Method used

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Experimental program
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Effect test

Embodiment 1

[0035] The reactor is equipped with the brand BC-A-61 catalyst produced by Beijing Research Institute of Chemical Industry.

[0036] The reaction temperature is 180° C., the reaction pressure is 2.3 MPa, the liquid space velocity of acetone is 1.0 L acetone / (L catalyst·hour), and the molar ratio of acetone:hydrogen is 1:0.4. Reaction result: the conversion rate of acetone is 55%, the selectivity of methyl isobutyl ketone is 80%, the selectivity of methyl isobutyl carbinol is about 19.0%

Embodiment 2

[0038] Use catalyst in the reactor with embodiment 1.

[0039] The reaction temperature is 195° C., the reaction pressure is 2.5 MPa, the liquid space velocity of acetone is 1.3 L acetone / (L catalyst·hour), and the molar ratio of acetone:hydrogen is 1:0.5. Reaction result: the conversion rate of acetone is 60%, the selectivity of methyl isobutyl ketone is 74%, and the selectivity of methyl isobutyl carbinol is about 24.0%.

Embodiment 3

[0041] Use catalyst in the reactor with embodiment 1.

[0042] The reaction temperature is 205° C., the reaction pressure is 2.8 MPa, the liquid space velocity of acetone is 1.6 L acetone / (L catalyst·hour), and the molar ratio of acetone:hydrogen is 1:0.6. Reaction result: the conversion rate of acetone is 66%, the selectivity of methyl isobutyl ketone is 70%, and the selectivity of methyl isobutyl carbinol is about 28.0%.

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Abstract

The invention relates to a method for coproduction of methyl isobutyl ketone and methyl isobutyl carbinol, and particularly to the production method for simultaneously coproducing methyl isobutyl ketone and methyl isobutyl carbinol with acetone and hydrogen as raw materials, employing a non-pure noble metal catalyst especially employing a catalyst with a brand number of BC-A-61 and produced by Beijing Research Institute of Chemical Industry, and under reaction conditions of the reaction temperature of 170-230 DEG C, the reaction pressure of 1.0-6.0 MPa, the acetone liquid phase airspeed of 0.5-3.0 h<-1> and the hydrogen and ketone molar ratio of 0.3-1. The method of the invention has the advantages of relatively low catalyst cost, reasonable and simple technological process and low energy consumption, simultaneously coproduces two kinds of products which are methyl isobutyl ketone and methyl isobutyl carbinol and have supply and demand gaps existing in markets, and has few by-product heavy components.

Description

technical field [0001] The present invention relates to a kind of method of producing methyl isobutyl ketone, more specifically, the present invention relates to a kind of method of coproduction methyl isobutyl ketone and methyl isobutyl carbinol. Background technique [0002] Methyl isobutyl ketone (MIBK) is a kind of colorless transparent mid-boiling point ketone solvent and chemical intermediate with excellent performance and aromatic ketone odor. Miscible with most organic solvents, it can be used as paint, nitrocellulose, ethyl cellulose, audio and video tapes, paraffin and various natural or synthetic resin solvents, dewaxing agent for lubricating oil refining, rare earth metal extraction agent, polymer reaction Raw materials for initiators, surfactants, pharmaceuticals, pesticide extractants and rubber antioxidants, etc. It is a fine petrochemical intermediate that is currently in short supply in my country. It is irreplaceable in many application fields. The current...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C27/00C07C49/04C07C45/73C07C31/125C07C29/145
Inventor 兰昭洪王卫明包江峰徐利红应民军赵建标吴锦平王东岳王晓明李道全吴建仲邵卫平朱玉成柯美生陈刚申林
Owner ZHEJIANG XINHUA CHEM
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