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Method for separation and purification of 1-octylene from hydrocarbon (oxygen) mixture

A technology of mixing materials and mixtures, applied in the direction of distillation purification/separation, organic chemistry, etc., can solve the problems of complex process steps and difficulty in reaching the polymerization level, etc., and achieve the effect of simple process flow

Active Publication Date: 2013-10-23
YANKUANG ENERGY R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is especially suitable for separating linear α-olefins from Fischer-Tropsch synthetic streams, and can effectively concentrate α-olefins, but from the examples cited, the resulting linear α-olefin products are difficult to reach polymerization grades. In addition, the process steps of the method more complex

Method used

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  • Method for separation and purification of 1-octylene from hydrocarbon (oxygen) mixture

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Hydrocarbon (oxygen) mixture raw material stream 1 is pre-separated through pre-separation unit A double tower to obtain C 8 Distillate stream 3 (composition see Table 1), C 8 - Light ends stream 2, C 8 +Heavy ends stream 4 where C 8 Distillate stream 3 enters the azeotropic distillation column B, the number of theoretical plates is 20, the feeding position is 10 plates from the top, the reflux ratio is 2.6, the temperature at the top of the tower is controlled at 73-75°C, and the temperature at the bottom of the tower is 121-123 ℃, the azeotropic agent and C 8 The hydrocarbon stream 6 enters the entrainer recovery tower C, the number of theoretical plates is 25, the reflux ratio is 1, the feeding position is 11 from the top, the temperature at the top of the tower is controlled at 61-64°C, and the temperature at the bottom of the tower is 113-117°C , the tower top extracts the enriched entrainer stream 8, and this stream returns to the phase separator circulation at...

Embodiment 2

[0044] Hydrocarbon (oxygen) mixture raw material stream 1 obtains C after double tower pre-separation 8 Distillate stream 3 (composition see Table 2), C 8 Distillate stream 3 enters the azeotropic distillation column B, the number of theoretical plates is 10, the feeding position is 5 plates from the top, the reflux ratio is 4, the temperature at the top of the tower is controlled at 73-76°C, and the temperature at the bottom of the tower is 125-127°C ℃, C extracted from the top of the tower 8 Hydrocarbons and entrainer stream 6 enter entrainer recovery tower C, the number of theoretical plates is 10, the reflux ratio is 10, the feed position is 5 plates from the top, the temperature at the top of the tower is controlled to be 60-62°C, and the bottom of the tower is 114 ~116°C, the azeotrope-enriched stream 8 is extracted from the top of the tower, and the stream is returned to the phase separator at the top of the azeotropic distillation column for circulation, and the oxyge...

Embodiment 3

[0049] Hydrocarbon (oxygen) mixture raw material flow 1 obtains C after being separated by a single dividing wall tower 8 Stream 3 (see Table 3 for composition), C 8 Distillate stream 3 enters the azeotropic distillation column B, the number of theoretical plates is 50, the feeding position is 25 plates from the top, the reflux ratio is 2.6, the temperature at the top of the tower is controlled at 73-75°C, and the temperature at the bottom of the tower is 108-111°C ℃, the rich oxide stream 7 is extracted from the bottom of the tower, and C is extracted from the top of the tower 8 The hydrocarbon and entrainer stream 6 enters the entrainer recovery tower C, the number of theoretical plates is 50, the reflux ratio is 0.5, the feeding position is 25 plates from the top, the temperature at the top of the tower is controlled to be 58-59°C, and the bottom of the tower is 113 ~115°C, the azeotrope-enriched stream 8 is extracted from the top of the tower, and the stream is returned t...

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Abstract

The invention relates to a method for separation and purification of 1-octylene from a hydrocarbon (oxygen) mixture. The raw material is subjected to pre-separation, azeotropic distillation to remove oxides, fine distillation to remove light and heavy isomers, coarse product refining and other processing steps, and then the 1-octylene product can be obtained. Compared with the oligomerization method and wax cracking method for production of 1-octylene, the method provided in the invention has the advantages of simple process and low production cost.

Description

technical field [0001] The invention relates to a method for separating and purifying 1-octene from a hydrocarbon (oxygen) mixture material, and the technology is suitable for 1-octene in an industrially produced hydrocarbon (oxygen) mixture stream, especially a stream produced by a Fischer-Tropsch synthesis method Product separation and purification. Background technique [0002] 1-octene is widely used in the production of aldehydes, brominated alkanes and comonomers in polymer production. It is also an important raw material for the manufacture of fine chemical products such as advanced plasticizers and synthetic lubricants. The market demand is growing rapidly. Therefore, 1-octene Octene has high economic value. At present, the structural surplus and shortage of synthetic resin and plastic products in my country are becoming more and more serious. The contradiction between the large number of general-purpose products and the few special grades has become very prominent....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/02C07C7/04
Inventor 孙启文杨正伟张宗森
Owner YANKUANG ENERGY R&D CO LTD
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