A method for producing propylene oxide and acetone simultaneously

A technology of propylene oxide and acetone, which is applied in the field of simultaneous production of propylene oxide and acetone, and achieves the effects of high propylene conversion rate, easy operation and simple process flow

Active Publication Date: 2019-07-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the simultaneous production of acetone and propylene oxide using a mixture of propylene and isopropanol as a raw material in the presence of oxygen.

Method used

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  • A method for producing propylene oxide and acetone simultaneously
  • A method for producing propylene oxide and acetone simultaneously
  • A method for producing propylene oxide and acetone simultaneously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] In the tank reactor, under an oxygen atmosphere (an atmosphere formed by oxygen with a purity of 99%), propylene and isopropanol are contacted with titanium silicon molecular sieve TS-1 raw powder as a catalyst, wherein propylene and isopropanol are The molar ratio of propanol is 1:2, the weight ratio of propylene and catalyst is 20:1, the temperature is 90°C, the pressure is 2.5MPa (gauge pressure), and the oxygen partial pressure is 1.5MPa. After reacting for 2 hours, the resulting mixture was filtered, and the resulting liquid mixture was collected and analyzed by gas chromatography to obtain propylene conversion, isopropanol conversion, propylene oxide selectivity and acetone selectivity. The results are in Table 1 listed.

Embodiment 2

[0066] Propylene was oxidized in the same manner as in Example 1, except that a hollow titanium-silicon molecular sieve of equal mass was used instead of titanium-silicon molecular sieve TS-1, and the temperature was 60°C. The experimental results are listed in Table 1.

Embodiment 3

[0068] Propylene was oxidized by the same method as in Example 1, except that the reaction temperature was 120°C. The experimental results are listed in Table 1.

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Abstract

The invention relates to the field of fine chemical industry, in particular to a method for simultaneously producing epoxypropane and acetone. The method comprises the step of enabling propylene, isopropanol and a titanium silicalite molecular sieve to contact one another to obtain a mixture of the epoxypropane and the acetone in the existence of oxygen. By adoption of the method provided by the invention, relatively high propylene conversion rate and relatively high epoxypropane selectivity can be realized; meanwhile, the acetone serving as a byproduct can also be produced. According to the method provided by the invention, a solvent cannot be used; meanwhile, various raw materials can be used directly without being prepared into a solution; the effective treatment amount of a device cannot be reduced. The method provided by the invention is simple in process flow, easy to operate and suitable for large-scale application.

Description

technical field [0001] The present invention relates to a method for the simultaneous production of propylene oxide and acetone. Background technique [0002] Alkylene oxide is an important class of oxygen-containing organic compounds, such as propylene oxide (PO for short), also known as propylene oxide, is an important basic organic chemical raw material, and its output in propylene derivatives is second only to that of polypropylene oxide. propylene. The biggest use of PO is to produce polyether polyols for further processing to make polyurethane, and it can also be used to produce propylene glycol which is widely used. In addition, propylene oxide can also be used in the production of surfactants, oilfield demulsifiers, etc. With the wide application of polyurethane materials, etc., the demand for propylene oxide is increasing year by year. At present, there are disadvantages in the process of producing propylene oxide in industry, especially it does not meet the requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D303/04C07D301/08C07C49/08C07C45/39
CPCY02P20/52Y02P20/584
Inventor 林民史春风朱斌
Owner CHINA PETROLEUM & CHEM CORP
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