Production method of propylene

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

Active Publication Date: 2015-12-16
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

[0020] according to figure 1 In the process flow shown, the extractant is a mixed solvent of nitrogen-formylmorpholine and methyl ethyl ketone, and the weight ratio is 1:1; 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 operating conditions of the extraction process are shown in Table 1, the operating conditions of the deethylene tower and the depropylene tower are shown in Table 2, and the reaction results are shown in Table 3.

Embodiment 2～6

[0022] React by each condition and step of embodiment 1, just change different operating parameters, the operating condition of extraction process is as shown in table 1, the operating condition of deethylene tower and depropylene tower is as shown in table 2, its reaction conditions and The reaction results are listed in Table 3.

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Abstract

The present invention relates to a propylene production method, wherein the problem of ethylene consumption in the prior art is mainly solved with the present invention. The technical scheme comprises that: a material containing 1-butene, 2-butene, isobutane and n-butane is adopted as a C4 raw material, the C4 raw material is respectively subjected to an extraction separation process to obtain a butene stream containing 1-butene and 2-butene, and the butene stream passes through a disproportionation reactor, an ethylene removing tower and a propylene removing tower to obtain the product propylene. The propylene production method can be used for industrial production of preparation of propylene from C4.

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 Patents(China)
IPC IPC(8): C07C11/06C07C6/04
Inventor 宣东刘苏董静
Owner CHINA PETROLEUM & CHEM CORP
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