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Acetic ether hydrogenation catalyst and technological method

A hydrogenation catalyst, ethyl acetate technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of low ethyl acetate conversion rate and ethanol selectivity and other problems to achieve the effect of reducing energy consumption

Active Publication Date: 2017-05-10
SHANGHAI HUAYI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by this invention is the lower problem of ethyl acetate conversion rate and ethanol selectivity in the prior art, and a new ethyl acetate hydrogenation catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Ethyl acetate raw material (by mass percentage, water content 1%) is preheated and mixed with hydrogen, and enters a tubular fixed-bed hydrogenation reactor. Preparation of CuO-ZnO-CaO-ZrO by coprecipitation method 2 Hydrogenation catalyst, wherein CuO content 65wt%, ZnO content 17wt%, CaO content 10wt%, ZrO 2 Content 8wt%. The preparation steps include: preparing metal salt solution I, which contains metal ions of copper ions, zinc ions, calcium ions, and zirconium ions; preparing a precipitant solution, which is recorded as solution II; adding solution I dropwise to the solution under heating and stirring In II, the precipitation reaction is carried out at 80°C, the reaction end point is pH=7.0, and the catalyst precursor slurry is obtained by aging for 4 hours; the catalyst precursor slurry is washed and filtered to remove free ions, and dried at 100°C for 8 hours ; Calcining the dried catalyst precursor slurry at 400° C. for 2 hours to prepare the catalyst.

[00...

Embodiment 2

[0025] Ethyl acetate raw material (by mass percentage, containing 3% water) is preheated and mixed with hydrogen, and enters a tubular fixed-bed hydrogenation reactor. Preparation of CuO-ZnO-CaO-La by coprecipitation method 2 o 3 Hydrogenation catalyst, wherein CuO content 60wt%, ZnO content 25wt%, CaO content 10wt%, La 2 o 3 Content 5wt%. The preparation steps include: preparing metal salt solution I, which contains metal ions of copper ions, zinc ions, calcium ions, and lanthanum ions; preparing a precipitant solution, which is recorded as solution II; adding solution I dropwise to the solution under heating and stirring In II, the precipitation reaction is carried out at 50°C, the reaction end point is pH=6.0, and the catalyst precursor slurry is obtained by aging for 3 hours; the catalyst precursor slurry is washed and filtered to remove free ions, and dried at 120°C for 6 hours ; Calcining the dried catalyst precursor slurry at 700° C. for 1 hour to prepare the cataly...

Embodiment 3

[0028] The ethyl acetate raw material (by mass percentage, containing 5% water) is preheated and mixed with hydrogen, and enters an adiabatic fixed-bed hydrogenation reactor. Preparation of CuO-ZnO-CaO-CeO by coprecipitation method 2 Hydrogenation industrial catalyst, wherein CuO content 62wt%, ZnO content 8wt%, CaO content 8wt%, CeO 2Content 22wt%. The preparation steps include: preparing metal salt solution I, which contains metal ions of copper ions, zinc ions, calcium ions, and cerium ions; preparing a precipitant solution, which is recorded as solution II; adding solution II dropwise to the solution under heating and stirring In Ⅰ, the precipitation reaction is carried out at 40°C, the reaction end point is pH=6.5, and the catalyst precursor slurry is obtained by aging for 2 hours; the catalyst precursor slurry is washed and filtered to remove free ions, and dried at 80°C for 20 hours ; Calcining the dried catalyst precursor slurry at 600° C. for 3 hours to prepare the ...

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PUM

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Abstract

The invention relates to acetic ether hydrogenation catalyst and a technological method. The acetic ether hydrogenation catalyst is used to mainly solve the problem that an acetic ether conversion rate and ethyl alcohol selectivity are lower in the prior art. The acetic ether hydrogenation catalyst is prepared from copper of copper oxide, a second component, a third component and a fourth component, wherein the mass content of the copper or the copper oxide is 20 to 70%, the mass content of the second component is 15 to 60%, the mass content of the third component is 1 to 40%, and the mass content of the fourth component is 1 to 20%; the second component is zinc oxide; the third component includes at least one of La2O3, CeO2, ZrO2, Fe2O3, MgO, MnO, B2O3 and K2O; the fourth component is CaO. The technical scheme of the technological method better solves the problem, and the acetic ether hydrogenation catalyst can be applied to acetic ether hydrogenation.

Description

technical field [0001] The invention relates to a catalyst for hydrogenation of ethyl acetate and a process method, in particular to a catalyst for hydrogenation of ethyl acetate to prepare ethanol and a preparation method thereof. Background technique [0002] Ethanol, commonly known as alcohol, is an important chemical raw material, which is widely used in food, chemical industry, military industry, medicine and other fields. In the chemical industry, ethanol is mainly used as a solvent and a raw material for synthesis. More than 300 kinds of chemical products need ethanol as a raw material; in the national defense industry, ethanol is involved in the manufacture of explosives. Ethanol is also a kind of green liquid fuel, and as a gasoline additive, it can completely replace harmful oxygen enhancers and antiknock agents. The fossil energy reserves on the earth are becoming less and less, which prompts countries to search for and develop new energy sources to solve this pr...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J23/83B01J23/889C07C29/149C07C31/08
Inventor 李永刚付朋孙思杰宁春利张春雷
Owner SHANGHAI HUAYI GRP CO
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