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US 8,545,603 B2Granted
Method to improve recovery and efficiency of adsorption processes using reversible blowers
AssigneeAdsorptech Inc.
InventorsApurva Maheshwary, John Robert Ambriano, James J Flaherty, Krishnamurti V Subramanian
Life of this patent
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Abstract
The present invention provides for a method utilizing adsorber bed(s) and reversible blower(s) operating in a vacuum pressure swing adsorption separation process to separate gases. The process is designed to provide a safer and more cost-effective adsorption system that captures and utilizes energy typically wasted during equipment transitions thereby achieving overall higher power efficiency.
Claims10
An apparatus for producing oxygen comprising:
- two adsorber beds (D1,D2) each connected to at least one reversible blower (B1,B2) through isolation valves (1,2), an equalization line which has two valves (3,4) along with a buffer tank (E1), and two product valves (5,6);
- and
- a separate motor (M1,M2) to drive each blower, powered by variable frequency drives (V1,V2) and connected to a super capacitor (SC);
- wherein a control method actuates rotating machinery associated with the at least one blower sequentially in clockwise and anticlockwise directions to supply air to the inlet of one bed while regenerating the other bed by removing adsorbed nitrogen using a vacuum.
1 more element
A process for producing oxygen comprising:
- providing two adsorber beds (D1,D2) each connected to at least one reversible blower (B1,B2) through isolation valves (1,2), an equalization line which has two valves (3,4) along with a buffer tank (E1), and two product valves (5,6);
- providing a separate motor (M1,M2) to drive each blower, powered by variable frequency drives (V1,V2) and connected to a super capacitor (SC);
- executing a control method that actuates rotating machinery associated with the at least one blower sequentially in clockwise and anticlockwise directions to supply air to the inlet of one bed while regenerating the other bed by removing adsorbed nitrogen using a vacuum.
Dependencies are inferred from the claim text.