Dryer system membrane

The purge gas is water scrubbed at 135 -145 bar, reducing the ammonia concentration to less than 200 ppm. The scrubbed purge gas is heated to 35 °C and sent directly to the Prism separators. Trace concentrations of ammonia and water vapor in the gas stream pose no problem to the membrane. Therefore, a dryer system is not required. 

This is a simple blotting method developed as an alternative to diffusion blotting and electroblotting. The suction power of a pump connected to a slab gel dryer system was used to drive the separated polypeptides from the gel to the nitrocellulose membrane. Proteins with both high and low molecular mass could be transferred using membranes with an appropriate pore size. 

They may also be required in industrial applications where they become part of venting systems on fermenters, centrifuges, autoclaves and freeze-dryers. Certain types of filter (membrane filters) also have an important role in sterility testing, where they can be employed to trap and concentrate contaminating organisms from solutions under... 

Membranes are used to dehydrate process air streams as replacement for desiccant dryers or adsorption systems. Such membrane units have been on the market for many years, but they are mainly for small gas streams. The membranes being used have very high water to air selectivity. The dehumidihcation units are usually connected to a compressed air line, and loss of pressurized air through the membrane may be a major cost. 

Air drying membrane modules are produced by the major membrane manufacturing companies such as Air Products, Air Liquide, Ube and Asahi Glass. However, most of the air dryer business is handled by other equipment manufacturers. Commercial membrane modules can handle flows from 1 L(STP) min to 2.3 Nm h (100 scfm). The membrane systems are capable of supplying oil and particulate free, dry compressed air to dew point as low as -40 °C (-40 °F) at air pressure of 275-2050 kPa (40-300 psig). 

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