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Method for producing isopropanol by acetone hydrogenation

A technology of isopropanol and acetone, applied in the production field of isopropanol, to achieve the effects of reducing production costs, avoiding investment, and low energy consumption

Inactive Publication Date: 2012-09-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

How to dehydrate isopropanol is a problem that must be solved in order to achieve a production device that can switch to produce isopropylamine and isopropanol at any time without adding new separation equipment and new species appearing in the production system , using the existing isopropanol dehydration method needs to introduce a new species or add new separation equipment, so it is necessary to develop a new isopropanol production method

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  • Method for producing isopropanol by acetone hydrogenation

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Embodiment 1

[0035] Fill the reactor with 1m 3 The acetone hydrogenation catalyst BC-A-31 produced by Beijing Research Institute of Chemical Industry sends acetone and hydrogen into the reactor, and the volume space velocity of the acetone liquid phase is 0.5h -1 , the molar ratio of acetone to hydrogen is 3, the reaction temperature is 110°C, and the reaction pressure is 0.8MPa. After the hydrogenation reaction, the reaction product flows out from the outlet of the reactor, and enters the gas-liquid separation tank after condensation, and the hydrogen is produced from the top of the tank. After being compressed and recycled by the compressor, the composition of the liquid discharged from the lower part of the gas-liquid separation tank is tested, which contains 0.01% diisopropyl ether, 0.3% water (a part is brought by acetone itself, and a part is newly generated) and 0.04 % of 4-methylpentanol and other negligible traces of heavy components, the balance being isopropanol. The liquid tha...

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Abstract

The invention aims at solving the problems of isopropanol production by acetone hydrogenation and impurity removal, especially water removal from isopropanol, and provides a method for producing qualified isopropanol products by converting acetone into isopropanol through hydrogenation, entraining water in the isopropanol by using diisopropylamine as an entrainer, and removing heavy components. The method for producing isopropanol in the invention has a short production flow, is easy to master, and has high economic benefits. Isopropanol can be produced in an isopropylamine production device; diisopropylamine is used as an entrainer; no new substance is introduced; not only the cleanness of the device system is guaranteed, but also the increase of investment for separation equipment and storage tank equipment is not necessary; and the production cost is reduced.

Description

technical field [0001] The present invention relates to a kind of production method of Virahol, more specifically, the present invention relates to a kind of method of producing Virahol by acetone hydrogenation. Background technique [0002] Isopropanol, also known as secondary propanol and dimethylmethanol, is an organic solvent with excellent performance, and is widely used as a solvent for shellac, nitrocellulose, alkaloids, rubber and grease. Isopropanol is also an important intermediate for the production of various organic compounds. It can be used as a raw material for the synthesis of glycerin, isopropyl acetate and acetone. It is also widely used as an antifreeze additive for petroleum fuels, such as automobiles and aviation fuels. In addition, isopropanol can also be used in the manufacture of bactericides, insecticides, cleaning agents, and disinfection preservatives. It can be used alone or in combination with other alcohols and surfactants. It is used in pestici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/10C07C29/145
Inventor 田保亮戴伟杨溢黄龙李宝芹唐国旗张桂英
Owner CHINA PETROLEUM & CHEM CORP
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