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Hybridization film for FCC gasoline desulfurize and method of preparing the same

A hybrid membrane and gasoline technology, applied in chemical instruments and methods, membrane technology, petroleum industry, etc., can solve the problems of short service life, low sulfur capacity of adsorbent, etc., and achieve simple method, high adsorption rate and controllability strong effect

Active Publication Date: 2011-10-19
安徽森诺膜技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of IRVAD technology are: the sulfur capacity of the adsorbent is low, frequent cycle regeneration is required, the service life is short, and fresh adsorbent needs to be replenished regularly [7]
[0015] Although the desulfurization process of pervaporation membrane technology has broad prospects, the current research progress shows that it is still difficult to achieve breakthroughs in high-performance separation membranes with high permeation flux and high selectivity.
Due to the limitations of polymer solution thermodynamics and the theory of transfer phenomena in polymer materials, no theoretical method for membrane material design has been established. The development of new membrane materials mainly relies on empirical or semi-empirical selection principles and experimental exploration.

Method used

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  • Hybridization film for FCC gasoline desulfurize and method of preparing the same
  • Hybridization film for FCC gasoline desulfurize and method of preparing the same
  • Hybridization film for FCC gasoline desulfurize and method of preparing the same

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Embodiment approach

[0044] The present invention simultaneously designs the preparation method of described hybrid film, and it comprises the following steps:

[0045] 1. Preparation of casting solution: According to the mass fraction requirements of the hybrid membrane formula of the present invention, fully mix the various components described, stir at 70-80°C for 4-12 hours, and let stand for degassing for 24 hours. After ~48 hours, a uniformly mixed casting solution was prepared.

[0046] 2. Membrane making: at 20-80°C, scrape-coat the prepared casting solution on a flat plate or non-woven fabric to form a flat film, and then soak it in a coagulation bath with a temperature of 20-80°C for 48-48°C. 72 hours, so that the membrane is completely solidified and formed, and the residual solvent and additives are removed, so that the desulfurization membrane with adsorption function can be prepared.

[0047] The flat plate includes a flat glass plate and a stainless steel plate; the scraping method...

Embodiment 1

[0053] The mass percent formulation of the hybrid membrane is designed as follows: 15 wt parts of polyethersulfone [BASF production]; 6.4 wt parts of CeY powder (PES / CeY=70 / 30), with an average particle size of 6.16 μm; 16 wt parts of polyethylene glycol-400; 4 parts by weight of polyvinylpyrrolidone and 58.6 parts by weight of N-methylpyrrolidone.

[0054] The process of manufacturing the hybrid membrane is as follows: first add 15g of polyethersulfone to 58.6g of NMP and stir at 70-80°C for more than 4 hours. After the dissolution is complete, add 16g of PEG-400 and 4g of PVP. After the solid is completely dissolved, add 6.4 gCeY, in order to ensure that the CeY powder is completely dispersed in the polymer, let stand for degassing for 24 hours, and prepare a casting solution; manually scrape the casting solution at a temperature of 40°C on a glass plate to form a flat film with a thickness of 0.25mm Afterwards, it is solidified and formed in a water coagulation bath at 60° ...

Embodiment 2

[0056] The mass percentage formula of the hybrid membrane is designed as follows: 15 wt parts of polyethersulfone [BASF production]; 22.5 wt parts of CeY powder (PES / CeY=40 / 60), with an average particle size of 6.16 μm; 16 wt parts of polyethylene glycol-400; 8 parts by weight of polyvinylpyrrolidone and 42.5 parts by weight of N-methylpyrrolidone.

[0057] The process of manufacturing the hybrid membrane is as follows: first add 15g of polyethersulfone to 42.5g of NMP and stir at 70-80°C for more than 4 hours. After the dissolution is complete, add 16g of PEG-400 and 4g of PVP. After the solid is completely dissolved, add 22.5 gCeY, in order to ensure that the CeY powder is completely dispersed in the polymer, let stand for degassing for 24 hours, and prepare a casting solution; manually scrape the casting solution at a temperature of 40°C on a glass plate to form a flat film with a thickness of 0.25mm Afterwards, solidify and shape in a water coagulation bath at 60°C; then s...

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Abstract

The invention provides a hybrid membrane used for FFC gasoline desulphurization and a preparation method thereof. The hybrid membrane is prepared with the following components by weight proportion as follows: a polymer of 10 to 35 portions; a desulphurization absorbent of 5 to 60 portions; a solvent of 30 to 80 portions; an additive of 5 to 30 portions. The method for preparing the hybrid membrane is that the components are mixed according to the recipe, and are stirred for four to twelve hours at the temperature ranging from 70 DEG C to 80 DEG C; after the mixture is left to stand and debubbled for 24 hours to 48 hours, uniformly mixed casting solution is obtained. The casting solution is made into a flat membrane or a hollow fiber membrane according to the prior conventional method, thus getting the hybrid membrane with desulphurization function. The invention can fully exert the adsorption capability of the desulphurization absorbent and finish the following separation with simplified process and lower cost. The hybrid membrane has the advantages of high speed, simple method, strong control capability and the raw materials are wide in sources, low in cost, safe and environment-friendly, etc.

Description

【Technical field】: [0001] The invention relates to the technical field of a functional separation membrane and its preparation, in particular to a hybrid membrane with adsorption and desulfurization function which can be directly prepared by a phase inversion method and a preparation method thereof. The hybrid membrane involved in the invention can remove sulfur compounds in FCC gasoline at normal temperature and pressure. 【Background technique】: [0002] At present, the main desulfurization methods are hydrodesulfurization (HDS) and adsorption desulfurization (ADS). Hydrodesulfurization can effectively remove inorganic sulfur and simple organic sulfur compounds. Difficult and requires high temperature, high pressure, hydrogen environment and noble metal catalysts [1] . [0003] Adsorption desulfurization (ADS) is a desulfurization process based on the ability of solid adsorbents to selectively adsorb organic sulfur compounds in distillate oils. According to the interacti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02C10G31/00
Inventor 陈玉海赵雪伶李大维
Owner 安徽森诺膜技术有限公司
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