Patent ID: 7125439
Filing Date: 2006-10-24
Classification: B01D

Abstract:
1. A method for providing clean air to an environment, the method comprising: compressing incoming air contaminated with nuclear, biological and chemical contaminants; cooling the compressed air to produce cooled compressed air; removing water from the cooled compressed air; enabling access to a regenerative pressure swing adsorption system; directing the cooled, compressed air through the regenerative pressure swing adsorption system; receiving, from the regenerative pressure swing absorption system, clean output air with contaminants removed therefrom; enabling access to an expander and using the expander to expand the cleaned air; providing the cleaned air to the environment; and enabling access to a first air cooler, a second air cooler, a first water separator and a second water separator; wherein cooling the compressed air and removing water from the compressed air includes passing the compressed air through the first cooler, passing the cooled air through the first water separator, passing the cooled air through the second cooler in which the cooled air is further cooled by cleaned air from the expander, and passing the air through the second water separator.