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Liquid Supported Carbon Dioxide Separation Membrane

A carbon dioxide and separation membrane technology, applied in separation methods, semi-permeable membrane separation, dispersed particle separation, etc., can solve the problem of low selectivity, and achieve the effects of low preparation cost, high solubility and low price

Inactive Publication Date: 2018-05-04
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In principle, this carbon dioxide separation method can obtain a high-strength, high-stability large-flux separation membrane; The selectivity is not high, and there is still a certain concentration of carbon dioxide in the separated gas

Method used

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  • Liquid Supported Carbon Dioxide Separation Membrane
  • Liquid Supported Carbon Dioxide Separation Membrane
  • Liquid Supported Carbon Dioxide Separation Membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The liquid-supported carbon dioxide separation membrane of this embodiment includes organic matter dissolved in dimethylformamide and heat-treated to become the main component. The organic matter is polyethylene polyamine and polyethersulfone resin. The principle model of the liquid-supported carbon dioxide separation membrane is shown in Fig. figure 1 As shown, the separation membrane includes a polymer membrane substrate with a porous structure and a carbon dioxide polymer adsorbent adsorbed in the porous structure; the polymer membrane substrate 1 is a polyethersulfone resin to provide the separation membrane as a whole Mechanical strength, the carbon dioxide polymer adsorbent 2 is polyethylene polyamine, which has a relatively high boiling point and can well complete the CO 2 adsorption and desorption.

[0034] The preparation method of the liquid-supported carbon dioxide separation membrane of this embodiment is specifically as follows:

[0035] Step 1: Take 2.5g...

Embodiment 2

[0041] The liquid-supported carbon dioxide separation membrane of this embodiment includes organic matter dissolved in dimethylformamide and heat-treated to become the main component. The organic matter is polyethylene polyamine and polyethersulfone resin,

[0042] Its preparation method is as follows:

[0043] Step 1: Take 2g of polyethylene polyamine and 3g of polyethersulfone resin as the main solute of the separation membrane.

[0044] Step 2: Add 21 g of dimethylformamide solvent to the solute, and heat and stir at 80° C. to dissolve to form a separation membrane precursor solution.

[0045] Step 3: Pour the solution evenly on the substrate, and adjust the scraper to 240 μm to scrape it to the size of A4 paper.

[0046] Step 4: Put the substrate into a constant temperature drying oven at 80° C. for 3 hours of heat treatment.

[0047] Step 5: Take out the substrate, and after it cools down, remove the film from the substrate, that is, a film with a thickness of 60 μm and a...

Embodiment 3

[0049] The liquid-supported carbon dioxide separation membrane of this embodiment includes organic matter dissolved in dimethylformamide and heat-treated to become the main component. The organic matter is polyethylene polyamine and polyethersulfone resin,

[0050] Its preparation method is as follows:

[0051] Step 1: Take 2.5g polyethylene polyamine and 5g polyethersulfone resin as the main solute of the separation membrane.

[0052] Step 2: Add 22.5 g of dimethylformamide solvent to the solute, and heat and stir at 70° C. to dissolve to form a separation membrane precursor solution.

[0053] Step 3: Pour the solution evenly on the substrate, and adjust the scraper to 160 μm to scrape it to the size of A4 paper.

[0054] Step 4: Put the substrate into a 90° C. constant-temperature drying oven for 3 hours of heat treatment.

[0055] Step 5: Take out the substrate, and after it cools down, remove the film from the substrate, that is, a film with a thickness of 40 μm and a ma...

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Abstract

The invention discloses a liquid supported carbon dioxide separating membrane. The liquid supported carbon dioxide separating membrane is prepared through dissolving a mixture of polyethylene polyamine and polyethersulfone resin in an organic solvent and carrying out coating to obtain a film. Compared with the existing carbon dioxide separating membrane, the liquid supported carbon dioxide separating membrane has simple preparation processes, a low cost, low volatility and high permselectivity to carbon dioxide, solves the problem that the traditional separating membrane has a low gas permeation amount, easily corrodes equipment and has a high cost and poor stability, and can be used for industrial exhaust-gas treatment and natural gas purifying treatment.

Description

technical field [0001] The invention belongs to the field of gas filtration, in particular to a liquid-supported carbon dioxide separation membrane. Background technique [0002] With the increasing environmental problems in the world, global warming has attracted more and more attention, and carbon dioxide (CO 2 ) has been generally considered to be the main cause of global warming. The use of fossil fuels is an anthropogenic activity that emits CO 2 The main source of (approximately 83% in the United States, EIA), and CO 2 The annual emissions will also show a trend of increasing year by year. [0003] than capture CO that has been emitted into the atmosphere 2 , to reduce CO at the source 2 The discharge volume is undoubtedly a more convenient method. For example, membrane separation technology can be used to treat CO in related gases 2 to separate. In addition, CO 2 Gas separation membranes can also play an important role in the purification process of natural g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/68B01D67/00B01D53/22B01D53/02
CPCY02C20/40
Inventor 蒋峰景刘力恒尹逸轩王垚俣王希尧章俊良
Owner SHANGHAI JIAOTONG UNIV
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