초록 ▼

This invention provides a two bed pressure swing adsorption process for recovering a primary gaseous component at a purity of over 99% from a feed gas comprising the primary component and one or more impurities. One such process includes: (a) passing the feed gas through a first adsorption bed to re

This invention provides a two bed pressure swing adsorption process for recovering a primary gaseous component at a purity of over 99% from a feed gas comprising the primary component and one or more impurities. One such process includes: (a) passing the feed gas through a first adsorption bed to remove one or more impurities; (b) conducting a pressure swing adsorption cycle in the first bed; (c) separately passing effluent gases from the first bed into at least two separate tanks for subsequent purging and pressurization of the beds; (d) storing a gas mixture in the first of the tanks containing the primary component in a concentration higher than the concentration of the primary component in the gas mixture in the second of the tanks; (e) refluxing the mixture of the primary component from the second tank in the first adsorption bed during the regeneration steps therein; (f) refluxing the mixture of the primary component from the first tank in the first adsorption bed during the regeneration steps therein; (g) simultaneously and non-concurrently performing steps (a) to (f) in a second bed; and (h) recovering the product gas stream.

대표청구항 ▼

This invention provides a two bed pressure swing adsorption process for recovering a primary gaseous component at a purity of over 99% from a feed gas comprising the primary component and one or more impurities. One such process includes: (a) passing the feed gas through a first adsorption bed to re

This invention provides a two bed pressure swing adsorption process for recovering a primary gaseous component at a purity of over 99% from a feed gas comprising the primary component and one or more impurities. One such process includes: (a) passing the feed gas through a first adsorption bed to remove one or more impurities; (b) conducting a pressure swing adsorption cycle in the first bed; (c) separately passing effluent gases from the first bed into at least two separate tanks for subsequent purging and pressurization of the beds; (d) storing a gas mixture in the first of the tanks containing the primary component in a concentration higher than the concentration of the primary component in the gas mixture in the second of the tanks; (e) refluxing the mixture of the primary component from the second tank in the first adsorption bed during the regeneration steps therein; (f) refluxing the mixture of the primary component from the first tank in the first adsorption bed during the regeneration steps therein; (g) simultaneously and non-concurrently performing steps (a) to (f) in a second bed; and (h) recovering the product gas stream. pport portion of the neck brace along a path having a plurality of portions at least some of which have different configurations, said step of moving the chin support portion includes moving the chin support portion along a straight portion of the path and along a curved portion of the path. 2. A method as set forth in claim 1 further including the step of positioning a support member of the neck brace on a torso of the patient's body, said step of moving the chin support portion of the neck brace includes transmitting force between the support member and the chin support portion of the neck brace. 3. A method as set forth in claim 1 wherein said step of moving the chin support portion of the neck brace along the straight portion of the path includes moving a member connected with the chin support portion along a guide which is stationary relative to a torso of the patient's body, said step of moving the chin support portion along the curved portion of the path includes moving the guide relative to the torso of the patient's body. 4. A method as set forth in claim 1 wherein said step of moving the chin support portion of the neck brace along the straight portion of the path includes moving a member connected with the chin support portion relative to a guide which is stationary relative to a torso of the patient's body, said step of moving the chin support portion along the curved portion of the path includes moving the guide relative to the torso of the patient's body while moving the member relative to the guide. 5. A method as set forth in claim 1 wherein said step of moving the chin support portion of the neck brace along a path having a plurality of portions which have different configurations includes manually rotating an actuator and effecting relative movement between a cam and a cam follower under the influence of force transmitted from the actuator. 6. A method as set forth in claim 5 wherein said step of effecting relative movement between a cam and a cam follower includes moving one of the cam and cam follower relative to the other of the cam and cam follower along a path extending transverse to an axis about which the actuator is rotated. 7. A method as set forth in claim 1 wherein said step of moving the chin support portion of the neck brace along the straight portion of the path includes rotating a member about a first axis while preventing pivotal movement of the member about a second axis extending transverse to the first axis, said step of moving the chin support portion along the curved portion of the path includes pivoting the member about the second axis. 8. A method as set forth in claim 1 wherein said step of moving the chin support portion of the neck brace along the straight portion of the path includes rotating a member about a first axis while preventing pivotal movement of the member about a second axis extending transverse to the first axis, said step of moving the chin support portion along the curved portion of the path includes rotating the member about the first axis and pivoting the member about the second axis while rotating the member about the first axis. 9. A method as set forth in claim 1 wherein said step of moving the chin support portion of the neck brace along the straight portion of the path includes manually rotating a member about a first axis extending through anterior and posterior sides of a torso of the patient's body, said step of moving the chin support portion along the curved portion of the path includes pivoting the member about a second axis extending transverse to the first axis while manually rotating the member about the first axis. 10. A method as set forth in claim 1 wherein said step of moving the chin support portion of the neck brace along the path having a plurality of portions which have different configurations includes manually rotating a knob about an axis extending through anterior and posterior sides of a torso of the patient's body. 11. A method as set for