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A magnetic desulfurizer for fuel oil based on supramolecular interaction

A desulfurizer and supramolecular technology, applied in the fields of refining hydrocarbon oil, treating hydrocarbon oil, petroleum industry, etc., can solve the problem of low activity of surface hydroxyl groups, and achieve the effects of easy operation, optimized interaction, and unique design

Inactive Publication Date: 2019-03-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But Fe 3 o 4 The magnetism is strong and the activity of hydroxyl groups on the surface is not strong. The silicon dioxide-wrapped ferric oxide can overcome the above shortcomings to a certain extent.

Method used

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  • A magnetic desulfurizer for fuel oil based on supramolecular interaction
  • A magnetic desulfurizer for fuel oil based on supramolecular interaction
  • A magnetic desulfurizer for fuel oil based on supramolecular interaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Magnetic desulfurizer A for fuel oil is composed of β-cyclodextrin modified by divalent copper ion coordination, coupling agent 3-aminopropyltrimethoxysiloxane and ferric oxide nanospheres wrapped by carrier silica , wherein the mass fraction of β-cyclodextrin modified by divalent copper ions accounts for 0.1% of the carrier, and the mass fraction of the coupling agent 3-aminopropyltrimethoxysiloxane accounts for 1% of the carrier. Synthesis steps: ferric iron tetroxide nanospheres (referred to as APTS-SiO 2 @Fe 3 o 4 ) and β-cyclodextrin (referred to as Cu(II)-β-CD) modified by divalent copper ions in N-methylpyrrolidone, where APTS-SiO 2 @Fe 3 o 4 The mass ratio of the total mass of Cu(II)-β-CD to N-methylpyrrolidone is 0.01:1, react at 80°C for 6 hours, magnetically separate, wash with ethanol, and vacuum dry to constant weight to obtain fuel oil Product magnetic desulfurizer A.

[0023] Desulfurize the desulfurizer A and the oil containing light thiophene sulf...

Embodiment 2

[0025] Fuel oil magnetic desulfurizer B is composed of β-cyclodextrin modified by divalent copper ion coordination, coupling agent 3-aminopropyltrimethoxysiloxane and ferric oxide nanospheres wrapped by carrier silica , wherein the mass fraction of β-cyclodextrin modified by divalent copper ions accounts for 1% of the carrier, and the mass fraction of the coupling agent 3-aminopropyltrimethoxysiloxane accounts for 2% of the carrier. Synthesis steps: ferric iron tetroxide nanospheres (referred to as APTS-SiO 2 @Fe 3 o 4 ) and β-cyclodextrin (referred to as Cu(II)-β-CD) modified by divalent copper ions in N-methylpyrrolidone, where APTS-SiO 2 @Fe 3 o 4The mass ratio of the total mass of Cu(II)-β-CD to N-methylpyrrolidone is 0.02:1, react at 100°C for 12 hours, magnetically separate, wash with ethanol, and vacuum dry to constant weight to obtain fuel oil Product magnetic desulfurizer B.

[0026] Desulfurize the desulfurizer B and the oil containing light thiophene sulfides ...

Embodiment 3

[0028] The fuel oil magnetic desulfurizer C is composed of β-cyclodextrin modified by divalent copper ions, coupling agent 3-aminopropyltriethoxysiloxane and ferric oxide nanospheres wrapped by carrier silica Composition, wherein the mass fraction of β-cyclodextrin modified by divalent copper ions accounts for 3% of the carrier, and the mass fraction of the coupling agent 3-aminopropyltriethoxysiloxane accounts for 3% of the carrier. Synthesis steps: ferric iron tetroxide nanospheres (referred to as APTS-SiO 2 @Fe 3 o 4 ) and β-cyclodextrin (referred to as Cu(II)-β-CD) modified by divalent copper ions in N-methylpyrrolidone, where APTS-SiO 2 @Fe 3 o 4 The mass ratio of the total mass of Cu(II)-β-CD to N-methylpyrrolidone is 0.05:1, react at 90°C for 8 hours, magnetically separate, wash with ethanol, and vacuum dry to constant weight to obtain fuel oil Product magnetic desulfurizer C.

[0029] Desulfurize the desulfurizer C and the oil containing light thiophene sulfides ...

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Abstract

The invention discloses a magnetic desulfurizer for fuel oil based on supermolecular action. The magnetic desulfurizer for fuel oil is composed of bivalent copper ion coordination modified active components beta-cyclodextrin, a coupling agent 3-aminopropyl triethoxy siloxane or 3-aminopropyl triethoxy siloxane and carrier silicon dioxide coated ferroferric oxide nanospheres. By performing coordinated modification of bivalent copper ions with desulfurizing activity on beta-cyclodextrin, the desulfurizing active components are formed. Desulfurization is mainly realized by means of relatively good match of the cavity dimension of beta-cyclodextrin and thiophene-type sulfides and coordination action of bivalent copper ions on the thiophene-type sulfides. The magnetic desulfurizer for fuel oil has the advantages of being circularly used, convenient to regenerate, environmentally friendly and the like.

Description

technical field [0001] The invention relates to a fuel oil magnetic desulfurizer based on supramolecular inclusion, belonging to the field of petroleum processing. Background technique [0002] Sulfur mainly exists in fuel oil in molecular forms such as mercaptan, sulfide, disulfide, thiophene, benzothiophene and its derivatives. The most content in gasoline is light thiophene sulfur, accounting for about 60% to 70% of the total sulfur content. From this point of view, to reduce the sulfur content in gasoline, it is mainly to remove different types of light thiophene sulfides in gasoline. [0003] Over the years, people have done a lot of scientific research work in the field of oil desulfurization, such as desulfurization theory, process technology and catalysts, but there are not many truly cost-effective and environmentally friendly desulfurization methods, mainly hydrodesulfurization. The current National V motor gasoline standard implemented nationwide and the future ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G25/00B01J20/28B01J20/22
CPCB01J20/06B01J20/22B01J20/28009C10G25/003C10G2300/202
Inventor 夏道宏段尊斌陈雅琪朱丽君项玉芝
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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