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Organic/inorganic composite membrane for use in oil gas recovery and preparation method thereof

An inorganic composite membrane, organic technology, applied in the direction of separation methods, chemical instruments and methods, membrane technology, etc., can solve the problems of no organic/inorganic composite membrane, etc., achieve easy control of process conditions, improve stability, and improve high temperature resistance Effect

Active Publication Date: 2012-03-28
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing patent application 200810234509.7 discloses a method for preparing a tubular organic-inorganic composite water-permeable membrane, which is mainly used for pervaporation to remove water in organic solvents. The organic polymer membrane materials are polyvinyl alcohol, polyethylene glycol , carboxymethyl cellulose, sodium alginate, chitosan or a mixture of more than one, the inorganic ceramic support material is mullite, Al 2 o 3 , ZrO 2 One or more than one composite material; the existing patent application 200910035877.3 discloses an organic-inorganic composite SiO 2 The preparation method of the gas separation membrane is to use 1,2-bis(triethoxysilyl)ethane (BTESE for short) as the precursor, and synthesize SiO2 in two steps under acid-catalyzed conditions. 2 Organic and inorganic membranes are involved in the separation of water vapor environment, such as water gas shift reaction, steam reforming reaction, etc. The above literature shows that there is no report on organic / inorganic composite membranes in oil and gas recovery in existing patents

Method used

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  • Organic/inorganic composite membrane for use in oil gas recovery and preparation method thereof
  • Organic/inorganic composite membrane for use in oil gas recovery and preparation method thereof
  • Organic/inorganic composite membrane for use in oil gas recovery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) For porous TiO 2 The ceramic support body is polished smooth, and then rinsed with deionized water;

[0027] (2) Use a photoelectric analytical balance to measure 1g of PEBA particles, dissolve them in 19g of n-butanol, configure a PEBA film-forming solution with a mass fraction of 5%, and stir at a constant temperature of 70°C on a constant temperature electromagnetic stirrer for 3 hours until the formation of Uniform and transparent solution, then put the polymer solution in a water bath at a constant temperature of 60°C for 10 hours until there are no bubbles in the solution, and then use it;

[0028] (3) As attached figure 1 , in a dust-free environment, the TiO 2 The ceramic membrane is placed in a petri dish, and deionized water is added to the petri dish to infiltrate TiO 2 The ceramic membrane surface shall prevail, and the water surface and TiO 2 Keep the thickness of the ceramic film even, let it stand until there is no disturbance on the water surface...

Embodiment 2

[0032] (1) For porous TiO 2 The ceramic support body is polished smooth, and then rinsed with deionized water;

[0033] (2) Use a photoelectric analytical balance to measure 1g of PEBA particles, dissolve them in 19g of n-butanol, configure a PEBA film-forming solution with a mass fraction of 5%, and stir at a constant temperature of 70°C on a constant temperature electromagnetic stirrer for 3 hours until the formation of Uniform and transparent solution, then put the polymer solution in a water bath at a constant temperature of 60°C for 10 hours until there are no bubbles in the solution, and then use it;

[0034] (3) As attached figure 1 , in a dust-free environment, the TiO 2 The ceramic membrane is placed in a petri dish, and deionized water is added to the petri dish to infiltrate TiO 2 The ceramic membrane surface shall prevail, and the water surface and TiO 2 Keep the thickness of the ceramic film at the same level, let it stand until the water surface is not disturbe...

Embodiment 3

[0038] According to the operation of implementation example 1, only changing the PEBA mass fraction in the PEBA film-forming liquid is 8%, obtains PEBA / TiO 2 Composite membrane, which is used to permeate and separate hexane / nitrogen mixed gas. When the molar fraction of hexane is 10% and the system temperature is 20°C, the hexane permeation rate is 103 (mol cm -2 ·s -1 ·Pa -1 ), the resolution is 30.

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Abstract

The invention belongs to the technical field of oil gas recovery and particularly relates to an oil gas recovery organic / inorganic composite membrane and a preparation method thereof. In the invention, the composite membrane is formed by combining and overlapping polyether block amide (PEBA) and titanium dioxide (TiO2); and the composite membrane uses compact membrane PEBA as a strippable skin layer and uses ceramic membrane TiO2 as a supporting layer and has a good separation effect and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of oil gas recovery, and in particular relates to an organic / inorganic composite film for oil gas recovery and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the demand for oil products is increasing day by day. However, light oil products such as gasoline are very easy to volatilize and emit high-concentration oil and gas during production, storage, transportation, sales, and use, causing serious pollution. Energy loss and quality decline, and will seriously pollute the atmospheric environment and leave a major fire hazard; the recovery of oil and gas by membrane separation generally uses the characteristics of the preferential permeability of the membrane to organic vapor, so that the organic vapor can be discharged under a certain pressure difference. Under the impetus, the "filtration" of the membrane makes the organic vapor in the mixed ga...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D67/00B01D53/22
Inventor 黄维秋王卫卿
Owner 溧阳常大技术转移中心有限公司
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