Separation method of isomerized oil

A separation method and technology for isomerizing oil, which are applied in the field of chemical engineering to achieve the effects of high adsorption and separation selectivity, good application prospects and high-efficiency separation

Active Publication Date: 2020-08-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, it is still a big challenge to develop adsorbent materials with high capacity and high selectivity and low regeneration energy to achieve efficient separation of isomerized oil.

Method used

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  • Separation method of isomerized oil
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  • Separation method of isomerized oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 1mmol Cu(BF 4 ) 2 , 1mmol (NH 4 ) 2 SnF 6 Dissolve 1.5mmol of 1,2-dipyridineacetylene in 10mL of methanol, mix the two in 10mL of water, and stir at 80°C for 24h. After suction filtration, activate the slurry at 80°C for 24h under vacuum conditions to obtain flexible functional The fluorine-containing anion hybrid porous material SnFSIX-2-Cu-i.

[0060] Measurement of SnFSIX-2-Cu-i material at 298K for n-hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane and 2,3-dimethylbutane The adsorption isotherm of a single component, the results are as follows image 3 shown.

[0061] The obtained SnFSIX-2-Cu-i was filled into a 5cm adsorption column, and n-hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane and 2, The mixed vapor of 3-dimethylbutane (molar ratio 1:1:1:1:1) is passed into the adsorption column at 2mL / min, and the breakthrough curve is as follows: Figure 5 As shown, high-purity 2,2-dimethylbutane and 2,3-dimethylbutane can be obtained in...

Embodiment 2

[0063] 1mmol ZnZrF 6 Dissolve 1.5mmol of 1,2-dipyridineacetylene in 10mL of methanol, mix the two at room temperature and stir for 24h, the resulting slurry is filtered and activated at room temperature for 24h under vacuum to obtain a flexible function containing Fluoride anion hybrid porous material ZrFSIX-2-Zn-i.

[0064] The obtained ZrFSIX-2-Zn-i was filled into a 5cm adsorption column, and n-pentane, 2-methylbutane, n-hexane, 2-methylpentane, 3-methylpentane, 2 , 2-dimethylbutane and 2,3-dimethylbutane (molar ratio 1:1:1:1:1:1:1) mixed vapor into the adsorption column at 2mL / min, the effluent gas can Obtain high-purity 2,2-dimethylbutane and 2,3-dimethylbutane. When n-hexane breaks through, the adsorption is stopped. Afterwards, switch nitrogen to purge the adsorption column at room temperature, the flow rate is 3.0mL / min, and the adsorption column can be recycled.

Embodiment 3

[0066] 1mmol CuZrF 6 Dissolve 1.5mmol of 1,2-dipyridineacetylene in 10mL of methanol, mix the two at room temperature and stir for 24h, the resulting slurry is filtered and activated at room temperature for 24h under vacuum to obtain a flexible function containing Fluoride anion hybrid porous material ZrFSIX-2-Cu-i.

[0067] Fill the obtained ZrFSIX-2-Cu-i into a 5cm adsorption column, and add n-hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, n-heptane The mixed vapor of alkanes, 2-methylhexane and 2,2 dimethylpentane (molar ratio 1:1:1:1:1:1:1) is passed into the adsorption column at 2mL / min, and the effluent gas can be obtained High purity 2,2-dimethylbutane and 2,2-dimethylpentane. When n-heptane breaks through, the adsorption is stopped. Afterwards, switch nitrogen to purge the adsorption column at room temperature, the flow rate is 3.0mL / min, and the adsorption column can be recycled.

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Abstract

The invention discloses a separation method of isomerized oil. The isomerized oil contains C5-C8 low-octane-number alkane and high-octane-number alkane. The low-octane-number alkane comprises at leastone of n-alkane and single-branched-chain alkane, and the high-octane-number alkane comprises multi-branched-chain alkane; according to the separation method, a fluorine-containing anionic hybrid porous material with a flexible function is used as a separation adsorbent, and the separation adsorbent is in contact with the isomerized oil to realize selective adsorption separation of the low-octanealkane and the high-octane alkane; the structural general formula of the fluorine-containing anion hybrid porous material is M-L1-A or M-L2-A, and M is a metal ion and is selected from Cu < 2 + >, Zn< 2 + >, Co < 2 + > or Ni < 2 + >, wherein A is an inorganic fluorine-containing anion and is selected from SnF6 < 2->, ZrF6 < 2->, GeF6 < 2->, SiF6 < 2-> or TiF6 < 2->; L1 is an organic ligand 1, 2-dipyridyl acetylene; and L2 is an organic ligand 4, 4 '-dipyridyl.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a method for separating isomerized oil. Background technique [0002] The increasingly serious environmental problems have put forward higher and higher requirements for the quality of gasoline. The production of clean gasoline requires blending components with low sulfur, low olefins and high octane number. At present, isomerized oil is a low-sulfur, olefin-free, and aromatic-free environmentally friendly product. It is an excellent blending component of clean gasoline, and isomerized oil usually accounts for 5% to 10% of motor gasoline. Isomerized oil is mainly a mixture of C5-C8 normal paraffins, single-branched alkanes and multi-branched alkanes, among which multi-branched alkanes not only have a higher octane number, but also burn completely. The upgraded "ultimate blending component", monobranched paraffins and n-paraffins have low octane numbers, which need t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/00C07C9/16C07C7/12
CPCC07C7/12C10G25/00C07C9/16
Inventor 邢华斌王青菊崔希利
Owner ZHEJIANG UNIV
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