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Process for producing alcohol and selectively co-producing 2-butanol by utilizing acetate and matching process system thereof

An acetate, selective technology, applied in the preparation of organic compounds, separation/purification of hydroxyl compounds, organic chemistry, etc., can solve the fluctuation of the price of ethanol or 2-butanol products, the whole process report of the hydrogenation process, Problems such as low conversion rate and selectivity, to achieve the effect of effective utilization of reaction heat, strong market adaptability, and high yield

Active Publication Date: 2012-09-12
SHANGHAI WUZHENG ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, in the literature reports on the hydrogenation of acetate to ethanol, the adjustment range of the hydrogenation product composition is generally not large, which is not enough to cope with the fluctuation of the price of ethanol or 2-butanol products caused by changes in market demand. Process report of the whole process
And the catalyst prepared by the reported method has obvious conversion rate, low selectivity, low space-time yield, low yield, high bed pressure drop, high reaction temperature, high hydrogen ester ratio, and high energy consumption.

Method used

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  • Process for producing alcohol and selectively co-producing 2-butanol by utilizing acetate and matching process system thereof
  • Process for producing alcohol and selectively co-producing 2-butanol by utilizing acetate and matching process system thereof
  • Process for producing alcohol and selectively co-producing 2-butanol by utilizing acetate and matching process system thereof

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Experimental program
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Effect test

Embodiment 1

[0073] Embodiment 1 produces ethanol and co-produces the process of 2-butanol

[0074] In this embodiment, various reaction components are set up with reference to the devices and processes shown in the accompanying drawings.

[0075] Industrial-grade reaction ethyl acetate raw material, after being pressurized to 2MPa, after mixing with the ethyl acetate coming out of the top of the acetate recovery tower 4, mixed with hydrogen (99.2%vol hydrogen, 0.1%volN 2 , 0.7% vol ethane) mixed, gasified and preheated to 280 ° C, added to the hydrogenation reactor 1 (inner diameter 40 mm, height 1800 mm), cooled to 50 ° C after the reaction into the gas-liquid separator 3, the gas-liquid Condensate (weight composition: 93.26% ethanol, 3.59% ethyl acetate, 0.98% water, 3.10% 2-butanol) comes out from the bottom of the separator 3, on the other hand, non-condensable gas (98.2%vol Hydrogen, 0.1%volN 2 , 1.7% vol ethane) is recycled as hydrogen raw material, and 1% of non-condensable gas i...

Embodiment 2

[0077] The process of embodiment 2 unit production ethanol products

[0078] In this embodiment, various reaction components are set up with reference to the devices and processes shown in the accompanying drawings.

[0079] Industrial-grade reaction ethyl acetate raw material, after being pressurized to 2MPa, mixed with the acetate from the top of the acetate recovery tower 4, mixed with hydrogen (99.6% vol hydrogen, 0.1% volN2, 0.3% vol ethane) After mixing, the gasification is preheated to 160°C, and it is added to the hydrogenation reactor 1 (inner diameter 40mm, height 1800mm). After the reaction, it is cooled to 50°C and enters the gas-liquid separator 3, and the condensate comes out from the bottom of the gas-liquid separator 3 (weight composition is 99.7% ethanol, 0.3% water), on the other hand, the non-condensable gas (99.3%vol hydrogen, 0.1%volN 2 , 0.6% vol ethane) is recycled as hydrogen raw material, and 1% of non-condensable gas is discharged from the system.

...

Embodiment 3-6

[0082] Embodiment 3-6 is the same as above-mentioned embodiment process, just wherein specific technological condition changes to some extent, see Table 1 for details (the carrier of catalyst in each embodiment is silicon dioxide).

[0083] Table 1

[0084]

[0085]

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Abstract

The invention relates to a process for producing alcohol and selectively co-producing 2-butanol by hydrogenising acetate and a matching process system thereof. After industrial acetate is hydrogenised and purified, a product is rectified, purified and dehydrated, thereby obtaining alcohol and co-producing 2-butanol. Cu-Zn-M is taken as an active component of a catalyst adopted in the process, wherein M is selected from the compound of one and more of Ir, Mn, W, Ru and Zr. 2-butanol is selectively co-produced by adjusting the reaction temperature. The catalyst, process and device adopted by the invention have the characteristics of high activity, high selectivity, high yield, strong market adaptability, less equipment investment, environmental protection, simpleness in preparing process, economical and practical properties, and the like. Meanwhile, conversion per pass is high and reaction heat is effectively utilized, so that the load for separating rough products is greatly relieved, the production flow is shortened and the energy consumption of production is also greatly reduced.

Description

technical field [0001] The invention relates to a process for preparing ethanol through hydrogenation of acetate and selectively co-producing 2-butanol and a matching process system. Background technique [0002] Ethanol is an important basic chemical raw material, used to manufacture acetaldehyde, ethylene, ethylamine, ethyl acetate, acetic acid, ethyl chloride, etc., and derived from medicines, dyes, paints, spices, synthetic rubber, detergents, pesticides and other products There are many intermediates, and there are more than 300 kinds of products. Similar to methanol, ethanol can be used as energy. Some countries have begun to use ethanol alone as vehicle fuel or mixed with gasoline (more than 10%) to save gasoline. [0003] 2-Butanol is used as an intermediate in the production of methyl ethyl ketone, used in the production of butyl acetate and sec-butyl ester, and can be used as a plasticizer, mineral dressing agent, herbicide, solvent, etc. [0004] Patent CN102327...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/08C07C29/149C07C31/12C07C29/82C07C29/76
Inventor 王保明李玉江王东辉徐长青
Owner SHANGHAI WUZHENG ENG TECH CO LTD
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