Fuel oil desulfuration membrane absorbing material and preparation method thereof

An inorganic adsorbent and formulation technology, applied in chemical instruments and methods, refined hydrocarbon oil, petroleum industry, etc., can solve the problems of adsorption function limitation, frequent cycle regeneration, low sulfur capacity of adsorbent, etc., to achieve simple method and source of raw materials The effect of wide and fast process speed

Inactive Publication Date: 2011-10-05
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although traditional hydrodesulfurization can effectively remove sulfides that are difficult to remove such as thiophenes, it generally has the following disadvantages: (1) RON is reduced by 7 to 10 units; (2) MON is reduced by 3 to 4 units (3) Olefin addition reaction takes place, which consumes a large amount of hydrogen; in addition, the equipment investment and operating costs of this process are very expensive, and domestic refineries generally lack hydrogenation devices, so it is difficult to be widely used in deep desulfurization. Therefore, other low-cost fuel oil deep desulfurization technologies are urgent

Method used

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  • Fuel oil desulfuration membrane absorbing material and preparation method thereof
  • Fuel oil desulfuration membrane absorbing material and preparation method thereof
  • Fuel oil desulfuration membrane absorbing material and preparation method thereof

Examples

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Example Embodiment

[0030] The present invention also designs the preparation method of the MMMs film, which includes the following steps:

[0031] 1. Preparation of film casting solution: According to the mass percentage requirements of the hybrid film formulation of the present invention, the components are fully mixed, stirred at 20 to 80°C for 4 to 12 hours, and left to defoam at normal temperature. After 24 to 48 hours, a uniformly mixed casting solution is prepared;

[0032] 2. Film making: at 20~90℃, scrape the obtained casting liquid on a flat plate or non-woven fabric to form a flat film, and then place it in a coagulation bath at a temperature of 20~90℃ to soak for 48~ For 72 hours, the film can be completely solidified and formed, and the remaining solvents and additives can be removed, and then the MMMs film with adsorption function can be prepared. The flat plate includes a flat glass plate and a stainless steel plate; the scraping method can be manually scraped with a scraper or a scrap...

Example Embodiment

[0041] Example 1:

[0042] Separation membrane preparation process: first add CeY molecular sieve into N-methylpyrrolidone solvent and stir. After dispersion is complete, add PEG-400 and PVP. After the solid is completely dissolved, add polyimide polymer in three times at 50℃ Stir for 8 hours, the polymer content is 14% (Wt%), the molecular sieve content is 9.4% (Wt%), the PEG-400 content is 18% (Wt%), and the PVP content is 3% (Wt%); to be dispersed After completion, let it stand for 24 hours to degas and prepare it into a film casting solution; after the film casting solution is scraped on a glass plate to form a flat film, it is solidified in a water solidification bath; then the resulting flat film is infiltrated with ethanol for 24 hours, After being drained and baked at 200°C for 3 hours, the MMMs film of the present invention is obtained. The resulting membrane has a well-developed pore structure, and the inorganic adsorbent particles are embedded in the three-dimensional...

Example Embodiment

[0046] Example 2:

[0047] Separation membrane preparation process: first add AgY molecular sieve into N-methylpyrrolidone solvent and stir. After the dispersion is complete, add PEG-400 and PVP. After the solid is completely dissolved, add the polyimide polymer three times at 50℃. Stir for 8 hours, the polymer content is 14% (Wt%), the molecular sieve content is 9.4% (Wt%), the PEG-400 content is 18% (Wt%), and the PVP content is 3% (Wt%); to be dispersed After completion, let it stand for 24 hours to degas and prepare it into a film casting solution; after the film casting solution is scraped on a glass plate to form a flat film, it is solidified in a water solidification bath; then the resulting flat film is infiltrated with ethanol for 24 hours, After being drained and baked at 200°C for 3 hours, the MMMs film of the present invention is obtained.

[0048] Among them, AgY adsorbent is prepared by ion exchange method: NaY and 0.15mol / L silver nitrate aqueous solution are stirre...

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Abstract

The invention relates to a preparation method of a fuel oil desulfuration membrane absorbing material belonging to a preparation technology and an application direction of membrane absorbing materials, in particular to a Mixed Matrix Membranes (MMMs) absorbing functional membrane with a three-dimensional net structure, prepared by using a high polymer as a matrix material and porous inorganic particles as a functional body and adopting a control phase transformation membrane preparation process. A fuel oil desulfuration membrane comprises the following components in percent by mass: 10-25 percent of polymer, 5-40 percent of inorganic absorbing agent particles, 30-80 percent of solvent and 5-30 percent of additive, wherein the sum of the contents of the components is 100 percent. According to the formula in the invention, the preparation method of the fuel oil desulfuration membrane comprises the following steps of: 1, preparing a casting film solution; 2, preparing the membrane; and 3, posttreating. The prepared absorbing functional membrane can be used for desulfuration of fuel oil, especially for removal of sulfide in gasoline and diesel, and has an absorbing capacity of more than 7.5mgS/g for the fuel oil with sulfur content of 500mug/g.

Description

technical field [0001] The invention belongs to the preparation technology and application direction of membrane adsorption materials, and relates to a method for manufacturing MMMs adsorption functional membranes for fuel oil desulfurization. Specifically, the polymer is used as the matrix material, the porous inorganic particles are used as the functional body, and an appropriate membrane preparation process is selected to prepare an adsorption functional membrane with a three-dimensional network structure, temperature resistance, and solvent resistance. The prepared adsorption function membrane can be used for desulfurization of fuel oil, especially the removal of sulfide in gasoline and diesel oil. Background technique [0002] With the world's increasing emphasis on environmental protection and stricter environmental regulations, the production of low-sulfur and ultra-low-sulfur fuel oil is gradually attracting people's attention. In recent years, the sulfur content of...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C10G25/00C08L79/08C08L81/06C08L27/16C08J7/02C08J5/18
Inventor 林立刚张玉忠
Owner TIANJIN POLYTECHNIC UNIV
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