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Low carbon olefin hydration technology

A technology of carbon olefin hydration and low carbon olefin, which is applied in the field of low carbon olefin hydration process, and can solve the problem that stability has not been fundamentally solved.

Active Publication Date: 2015-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability of the long-term operation of the low-carbon olefin hydration to low-carbon alcohol process has not been fundamentally resolved.

Method used

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  • Low carbon olefin hydration technology
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Examples

Experimental program
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Embodiment 1

[0021] In Example 1, the unmodified catalyst DNW-II strong acidic cation exchange resin (produced by Dandong Mingzhu Special Resin Co., Ltd.) was directly used. Embodiment 2 adopts the SO that zinc mass content is 2% 4 2- / ZnO modified DNW-Ⅱ strong acidic cation exchange resin catalyst. Embodiment 3 adopts the SO that zinc mass content is 8% 4 2- / ZnO modified DNW-Ⅱ strong acidic cation exchange resin catalyst. The feeding methods of Examples 1-3 are all extrusion feeding by water, and n-butene and propylene are respectively used as raw materials. The reaction conditions are shown in Table 1, and the analysis results are shown in Table 2.

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Abstract

A low carbon olefin hydration technology comprises the following steps: injecting water to a raw material tank full of liquid low carbon olefin, conveying the liquid low carbon olefin to water and a reactor under the extrusion of water, and carrying out a hydration reaction under the action of a catalyst under a liquid-volume hourly space velocity of the liquid low carbon olefin of 0.5-2.5h<-1> under a water / olefin mole ratio of 0.8-2.5 at a temperature of 135-170DEG C under a pressure of 5.0-10.0MPa. The technology is simple to operate, and can obviously improve the long period running stability of a method for preparing low carbon alcohol through hydration of the low carbon olefin.

Description

Technical field [0001] The present invention relates to a low-carbon olefin hydration process, and specifically to a low-carbon olefin hydration process to produce low-carbon alcohol capable of long-term and high-stability operation. technical background [0002] The hydration reaction of light olefins is an important catalytic process. Among the hydration reactions, the most representative and practical value is the hydration reaction of low-carbon olefins to prepare alcohols, such as ethanol, isopropanol, sec-butanol and other low-carbon alcohols. As an important organic chemical raw material and solvent, low-carbon alcohol has a very wide range of uses. Ethanol can be used to make dyes, paints, drugs, synthetic rubber, and detergents. Isopropyl alcohol can be used to synthesize glycerol and acetone, and can also be used to synthesize pesticides, spices and other fine products. Sec-butanol is widely used in the synthesis of methyl ethyl ketone, or can be used as a raw m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/04C07C31/12C07C31/10
CPCC07C29/04C07C31/12C07C31/10
Inventor 霍稳周魏晓霞田丹刘野李花伊
Owner CHINA PETROLEUM & CHEM CORP