Osmotic vaporization gasoline desulfurization polyethylene glycol composite membrane and its preparation method |
Title： |
| Osmotic vaporization gasoline desulfurization polyethylene glycol composite membrane and its preparation method |
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Application Number： |
200710099601 |
Application Date： |
2007/05/25 |
Announcement Date： |
2007/10/17 |
Pub. Date： |
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Publication Number： |
101053789 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
B01D 71/64, B01D 71/38, B01D 69/12 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Li Jiding, Chen Jian, Ye Hong, Lin Yangzheng |
Key Words： |
Osmotic vaporization, gasoline, desulfurization, polyethylene glycol, composite membrane,preparation |
Abstract： |
The invention relates to a pervasive aerification gasoline desulfurization polyethylene glycol composite membrane and a preparation method thereof, to the technology field of pervasive aerification membrane separation, and the character of the composite membrane in that the polyetherimide is used as basement membrane and the polyethylene glycol is used as surface activity layer. The preparation method firstly dissolves the polyetherimide in the solvent to prepare basement membrane. The polyethylene glycol is dissolved in the solvent to prepare a uniform mixed liquor, then add crosslinking agent that is maleic acid and catalyst that is trimethylamine in turns respectively, intensive mixing, at last, add surfactant tween and make it misce bene. The prepared separation layer membrane liquor is coated on the treated basement membrane, and at last the composite membrane is heat treatment. The invention can bend the emission coating hard on the basement membrane, to resolve the problem of the composite membrane swelling and breaking up in industrial use. It can high selectively divide the organic sulfur component in gasoline desulfurization. |
Claim： |
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