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Production method of propylene

A production method and technology of propylene, applied in the field of propylene production, can solve problems such as consumption of ethylene, and achieve the effects of improving utilization rate, improving economic benefits, and good technical effects

Active Publication Date: 2014-01-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is the problem of ethylene consumption existing in the prior art, and a new propylene production method is provided

Method used

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  • Production method of propylene
  • Production method of propylene
  • Production method of propylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] according to figure 1 The process flow shown, the catalyst in the isomerization reactor is 12%Ni / Al 2 o 3 , operating conditions: reaction temperature 50°C, reaction pressure 1.5MPa in absolute pressure, mass space velocity of C4 2h -1 ; The disproportionation catalyst in the disproportionation reactor is 8% WO 3 / SiO 2 , the operating conditions are: reaction temperature 300°C, reaction pressure 3MPa in absolute pressure, mass space velocity of C4 2h -1 ; The extractant is a mixed solvent of nitrogen-formylmorpholine and methyl ethyl ketone, with a weight ratio of 1:1. The operating conditions of the deethylene tower and the depropylene tower are shown in Table 1, the operating conditions of the extraction process are shown in Table 2, and the reaction conditions and reaction results are shown in Table 3.

[0022]

Embodiment 2～6

[0024] React by each condition and step of embodiment 1, just change different operating parameters, the operating conditions of deethylene tower and depropylene tower are as shown in table 1, the operating conditions of extraction process are as shown in table 2, reaction conditions and reaction The results are shown in Table 3.

[0025]

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Abstract

The invention relates to a production method of propylene, which mainly solves the problem that ethylene is to be consumed in the prior art. Due to the adoption of the technical scheme of obtaining a product propylene by a carbon 4 raw material comprising 1-butene, 2-butene, iso-butane and n-butane through a disproportionation reactor, an ethylene removing tower, a propylene removing tower and an extraction flow, the production method of the propylene can be used for industrialized production of preparing the propylene by carbon 4.

Description

technical field [0001] The present invention relates to a production method of propylene. Background technique [0002] The traditional methods of ethylene co-production and refinery recovery of propylene are obviously difficult to meet the growing demand for propylene. The use of olefin disproportionation technology can digest C without reducing the cracking severity of naphtha. 4 Distillate, and can increase the production of propylene, so the research and development of olefin disproportionation to propylene technology is not only to improve the production of propylene, but also to promote low value-added C 4 The comprehensive utilization of distillates is of great significance, among which the disproportionation of butene involved in the present invention to produce propylene is a promising process. [0003] Olefin disproportionation reaction, also known as olefin double bond replacement reaction, is an olefin conversion phenomenon discovered in the 1960s. Abundant ole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/06C07C11/04C07C11/08C07C6/04
Inventor 宣东王仰东刘苏沈伟刘军
Owner CHINA PETROLEUM & CHEM CORP
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