Effect of pore size distribution on mass transfer in direct contact membrane distillation;

The difference between direct contact membrane distillation (DCMD) and air gap membrane distillation (AGMD) is compared,both by the prediction of the mathematical models of these two processes and by membrane distillation experiments.

The water fluxes through five kinds of microporous membrane, which were made of different materials, were measured by direct contact membrane distillation.

Ethanol-water separation in hollow fiber membrane contactor;

Separation of carbon dioxide from gas mixtures by membrane contactor;

Study on hollow fibre membrane contactor for the separation of carbon dioxide from carbon dioxide-nitrogen mixture;

Separation of CO_2 from flue gas using hollow fiber membrane contactors;

Three typical absorbents such as aqueous of aminoacetic acid potassium(AAAP),monoethanolamine(MEA) and methyldiethanolamine(MDEA) are selected to investigate the performance of CO_2 separation from flue gas via membrane contactors made of hydrophobic hollow fiber polypropylene porous membrane.

An introduction of the fundamentals of membrane absorption is presented,together with an analysis of membrane absorption from three aspects,including system process,absorption solution,and membrane contactors and membrane materials.

Analyzes the reasons for the frequent mechanical seal failures, compares the structrueand the advantages and disadvantages of the imported mechanical sealing and the domestic oil film non-contact mechanical sealing, and summarizes the application of oil film non-contact mechanical sealing in ammonia compressor.