Abstract: The invention relates to a process for modifying the VPSA/VSA/PSA cycle to allow for maximum product pressure without the need for a base load oxygen compressor (BLOC) or base load oxygen blower (BLOB), thus supplying low pressure oxygen (3 to 7 Psig) to the end user while at the same time lowering product costs 10 to 30%. The system of this invention preferably employs larger piping runs from the VPSA to the oxy-fuel control skids, larger piping for the oxy-fuel control skid, larger piping for the VPSA, low pressure drop flow measurements, and low pressure drop check valves.

Abstract: The invention relates to a process for modifying the VPSA/VSA/PSA cycle to allow for maximum product pressure without the need for a base load oxygen compressor (BLOC) or base load oxygen blower (BLOB), thus supplying low pressure oxygen (3 to 7 Psig) to the end user while at the same time lowering product costs 10 to 30%. The system of this invention preferably employs larger piping runs from the VPSA to the oxy-fuel control skids, larger piping for the oxy-fuel control skid, larger piping for the VPSA, low pressure drop flow measurements, and low pressure drop check valves.

Abstract: An adsorbent bed structure and process is disclosed for use in an adsorption based gas separation process. A conventional adsorbent bed in a gas separation process is replaced with a one or more modular compact adsorbent bed units which are connected to make an adsorbent bed structure. The modular design requires lower fabrication and maintenance costs; is easier to transport; and is easier to load with adsorbent material.

Abstract: Waste heat generated within a pressure swing adsorption system is effectively captured and utilized to preheat the feed gas passing to a feed gas blower for compression to the desired adsorption pressure level. The energy efficiency of the system, and overall system performance, are thereby enhanced.

Abstract: A surface probe microscope such as a scanning tunneling microscope has a platform on which an actuator and a sample (specimen) holder are disposed in proximity to each other; the actuator being adapted to move a electrode tip into surface probing relationship with the specimen. Holders for retaining samples at storage stations and a carrier for retaining a plurality of electrode tip units are supported on opposite sides of a region in which a laterally extending portion of a longitudinally and rotationally movable arm is disposed. The lateral arm portion has, on one side thereof, a member for engaging an electrode tip unit in the actuator and moving it to the carrier for location in a receptacle therein. Rotation of the arm also indexes the carrier to present different tip units for engagement so that tip units can be exchanged between the actuator and the carrier. On the opposite side of the carrier are the holders for sample retainers.