Combined production method of isopropanol and methyl isobutyl ketone

A methyl isobutyl ketone, isopropanol technology, applied in chemical instruments and methods, carbon-based compound preparation, hydroxyl compound preparation and other directions, can solve the problem of high catalyst cost, achieve high product yield, less heavy components, The effect of high utilization

Inactive Publication Date: 2013-12-04
ZHEJIANG XINHUA CHEM +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

The palladium content in the catalyst is relatively high, generally around 0.2%, resulting in higher catalyst costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The reactor is equipped with a BC-A-60 catalyst produced by the Beijing Research Institute of Chemical Industry. The reaction temperature is 175° C., the reaction pressure is 2.15 MPa, the liquid space velocity of acetone is 1.0 L acetone / (L catalyst·hour), and the molar ratio of hydrogen:acetone is 0.4:1. Reaction result: the conversion rate of acetone is 75%, the selectivity of methyl isobutyl ketone is 92%, and the selectivity of isopropanol is about 7%.

Embodiment 2

[0035] Use catalyst in the reactor with embodiment 1.

[0036] The reaction temperature is 190° 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 hydrogen:acetone is 0.5:1. Reaction result: the conversion rate of acetone is 88%, the selectivity of methyl isobutyl ketone is 85%, and the selectivity of isopropanol is about 13%.

Embodiment 3

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

[0039] The reaction temperature is 200° C., the reaction pressure is 2.9 MPa, the liquid space velocity of acetone is 1.5 L acetone / (L catalyst·hour), and the molar ratio of hydrogen:acetone is 0.65:1. Reaction result: the conversion rate of acetone is 95%, the selectivity of methyl isobutyl ketone is 65%, and the selectivity of isopropanol is about 31.0%.

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Abstract

The invention relates to a combined production method of isopropanol and methyl isobutyl ketone. The combined production method is shown as follows: acetone and hydrogen are used as raw materials, a non-noble metal catalyst especially a catalyst produced by Beijing research institute of chemical industry and with a brand number of BC-A-60 is used, the isopropanol and the methyl isobutyl ketone are simultaneously and combinedly produced under the reaction conditions of the reaction temperature of 170-230 DEG C, the reaction pressure of 1.0-6.0 MPa, the acetone liquid phase space velocity of 0.5-3.0 h<-1> and the hydrogen ketone molar ratio of 0.3-1. The combined production method has the following advantages that the low-cost non-noble metal catalyst is used, the technological process is simple and reasonable and low in energy consumption, two products of the isopropyl alcohol and the methyl isobutyl ketone are simultaneously and combinedly produced, wherein a gap of supply and demand of the isopropyl alcohol and the methyl isobutyl ketone is existed in markets, and by-product heavy components are few.

Description

technical field [0001] The present invention relates to a kind of method of producing isopropanol, more specifically, the present invention relates to a kind of method of coproduction isopropanol and methyl isobutyl ketone. technical background [0002] Isopropanol, also known as secondary propanol and dimethylmethanol, has a wide range of uses. It is mainly used as an organic solvent in the fields of inks and coatings, and also has important applications in medicine, organic chemical raw materials, and the electronics industry. At present, there are two technical routes for the production of isopropanol in the domestic industry: the first is the hydration of propylene to produce isopropanol; the second is the hydrogenation of acetone to produce isopropanol. Among them, the propylene hydration method is divided into indirect hydration method and direct hydration method. Propylene indirect hydration, also known as propylene sulfuric acid hydration, is to dissolve propylene i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/10C07C29/145C07C49/04C07C45/73
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邵庆友涂利根段小刚
Owner ZHEJIANG XINHUA CHEM
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