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Lectrodryer - Model Type BP -Compressed Air and Gas Dryer
The Type BP has a closed-circuit reactivation sys-tem that makes it ideal for drying gases without con-tamination from the atmosphere. And this includes typical gases such as hydrogen, nitrogen, helium, argon, and methane. The BP accomplishes this by using dual adsorbers that are heat reactivated for drying compressed air and other gases to dew-points down to –80°F, with reactivation occurring at line pressure.
The closed-circuit reactivation system consists of a re-circulating blower, external heater, water-cooled inner cooler, moisture separator, condensate trap. Line pressure reactivation eliminates the need for depressurizing for switchover. By eliminating these operations, the BP prevents the possibility of bed-pressure shocks wich can contribute to desiccant failure, dusting, high bed-pressure drop, rupture of bed screens, abnormally short desiccant life.
With equalized pressure on both towers on adsorp-tion and reactivation, the BP experiences no cross leakage on the four-way valves. And because the reactivation blower is designed for operating at the system’s line pressure, horsepower requirements are much less than for units with low pressure.
The BP Lectrodryer is available for electric or steam reactivation in standard or steam reactivation in standard sizes ranging from 200 SCFM to 20,000 SCFM. And depending on the application, the desic-cants can be either activated alumina, silica gel, sorbead, or a molecular sieve.
