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Method for production of ethanol and co-production of methanol

A technology of methanol and ethanol, applied in the field of catalytic chemistry, to achieve the effect of improving product flexibility and high hydrogenation activity

Active Publication Date: 2015-06-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This route is still in the research stage, but has very high application prospects

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  • Method for production of ethanol and co-production of methanol
  • Method for production of ethanol and co-production of methanol

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Experimental program
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Embodiment 1

[0029]Embodiment 1: catalyst preparation

[0030] 1) Preparation of 100% CuO catalyst

[0031] 121g Cu(NO 3 ) 2 ·3H 2 O was dissolved in 2000ml of deionized water, and 68.0g of concentrated ammonia (25-28%) was diluted with 1500ml of deionized water. Stir the ammonia solution vigorously at room temperature, then slowly add the metal nitrate solution into the ammonia solution for about 60 minutes. Adjust the pH value of the precipitate to 10.0 with ammonia solution, continue to stir for 200 min, and age for 36 h. The precipitate was washed with deionized water until neutral, and centrifuged. The obtained precipitate was dried in an oven at 120°C for 24 hours, and the dried sample was placed in a muffle furnace, heated to 400°C at a heating rate of 1°C / min, and calcined for 5 hours to obtain a calcined sample. This catalyst is designated CAT1.

[0032] 2) 85%CuO / 10%ZnO / 5%Al 2 o 3 Catalyst preparation

[0033] 102.85g Cu(NO 3 ) 2 ·3H 2 O, 12.00g Zn(NO 3 ) 2 ·6H 2 ...

Embodiment 2

[0040] Example 2: Catalyst Evaluation

[0041] The reaction volume space velocity in the present invention is defined as the volume flow of the reaction raw materials (under standard conditions) entering the reaction system per hour divided by the mass of the catalyst. In GHSV, the unit is mlg -1 h -1 .

[0042] 10g of the above-mentioned catalyst of 20-40 mesh is loaded into the constant temperature zone of the fixed-bed reactor. Before the reaction, the catalyst was reduced online, the reduction temperature was 260°C, the pressure was 0.1MPa, and the reducing gas was 5% H 2 +95%N 2 , Reduction time 24h. After the reduction, adjust the temperature controller to reduce the reaction temperature to 230°C, and use N 2 Purge the pipeline and the residual H in the reactor 2 , and then switch the gas to a certain composition of synthesis gas and pressurize it, adjust the mass flow meter to the specified flow rate (standard condition), set the acetate high-pressure feed pump t...

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Abstract

The invention discloses a method for production of ethanol and co-production of methanol on one catalyst in a reactor by co-feeding of synthetic gas and acetic ester as the reaction raw materials. More specifically, the method for production of ethanol and co-production of methanol provided by the invention includes: passing the feed gas containing acetic ester and synthetic gas through a catalyst loaded reactor, under the conditions of a reaction temperature of 150-350DEG C, a reaction pressure of 0.1-20.0Mpa, a reaction volume space velocity of 100-45000mlg<-1>h<-1> and an acetic ester mass space velocity of 0.01-5.0h<-1>, carrying out production of ethanol and co-production of methanol. The active components of the catalyst are copper and optional zinc and / or aluminum. The method provided by the invention greatly promotes carbon monoxide conversion to generate methanol, and at the same time maintains extremely high acetic ester hydrogenation activity. Moreover, while producing ethanol, the method provided by the invention achieves co-production of a certain amount of methanol, the proportions of ethanol and methanol are adjustable, and the flexibility of the product is enhanced.

Description

technical field [0001] The invention belongs to the field of catalytic chemistry, and in particular relates to a new method for producing ethanol and co-producing methanol. Background technique [0002] Ethanol is mainly used as vehicle fuel and vehicle fuel additive, and is also an important basic organic chemical raw material, mainly used in the production of acetaldehyde, ether, acetic acid, ethyl acetate, ethylamine, etc. In 2012, global ethanol production reached 85.1 billion liters, while China's ethanol gasoline has accounted for more than 20% of China's total gasoline consumption. During the 12th Five-Year Plan period, the proportion of non-fossil energy in China's primary energy will increase to 11.4%, and no new fuel ethanol projects with grain as the main raw material will be built. Therefore, multi-channel synthesis of ethanol has important practical and strategic significance for saving petroleum resources and reducing environmental pollution. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/08C07C31/04C07C29/149
CPCB01J23/72B01J23/80C07C29/149C07C31/04C07C31/08
Inventor 刘勇朱文良刘红超倪友明刘中民孟霜鹤李利娜刘世平周慧
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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