Membrane gas separation

Membrane gas separation is a technology used in various industrial applications for the separation of gases. This process involves the use of a membrane to separate gases in a mixture, based on the difference in the permeability of different gases through the membrane.

Overview

Membrane gas separation is a process that is widely used in various industries, including the petrochemical industry, natural gas processing, and carbon capture and storage. The process involves the use of a membrane, which is a thin layer of material that acts as a selective barrier, allowing some gases to pass through while blocking others.

Process

The process of membrane gas separation involves the use of a pressure gradient across the membrane. The gas mixture is introduced on one side of the membrane, and the gases that are more permeable to the membrane pass through to the other side, resulting in a separation of the gases.

The efficiency of the separation process depends on several factors, including the properties of the gases, the properties of the membrane, and the operating conditions. The selectivity of the membrane, which is the ratio of the permeabilities of two gases, is a key factor in the efficiency of the separation process.

Applications

Membrane gas separation is used in a wide range of applications. In the petrochemical industry, it is used for the separation of hydrogen from hydrocarbon gases. In natural gas processing, it is used for the removal of carbon dioxide and nitrogen. In carbon capture and storage, it is used for the separation of carbon dioxide from flue gases.

See also

• Gas separation
• Membrane technology
• Petrochemical industry
• Natural gas processing
• Carbon capture and storage

References

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  Mechanisms of transport in membranes

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  Membrane separation process

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  Microscopic model of a nanoporous membrane

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  Zeolite ZSM-5 van der Waals model

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  Membrane gas separation