Abstract:
Separating carbon dioxide from air by a graphene filter adapted to block oxygen and nitrogen molecules, but allow carbon dioxide molecules to pass through.
Abstract:
A gas-separation membrane module assembly and a gas-separation process using the assembly. The assembly includes sets of manifolds, between which are mounted arrays of membrane modules, the manifolds and membrane modules forming a stack within a pressure vessel or housing. The stacked, manifolded arrangement enables many membrane elements to be fed in parallel with the gas to be treated.
Abstract:
This invention relates to organopolysiloxane compounds. In some embodiments, the organopolysiloxane compound includes a siloxane unit having at least one trialkylsilyl pendant group attached thereto through an organic group spacer. The present invention also relates to methods of making the organopolysiloxane, a hydrosilylation-curable silicone composition including the organopolysiloxane, a cured product of the silicone composition, a membrane including the cured product, a method of making the membrane, and a method of separating components in a feed mixture using the membrane.
Abstract:
An insert for use in an apparatus for the treatment of compressed gas,particularly compressed air, is disclosed. The insert includes a baffle for interrupting the flow of a stream of compressed air passing from an inlet in a housing of a dryer and causing the stream of compressed gas to change direction. The insert also includes a plurality of supports extending from the baffle to adjacent an internal surface of the housing which include a channel to allow liquid deposited in the baffle to flow towards the housing's internal surface.
Abstract:
Die Erfindung betrifft ein Membrantrennverfahren und eine Membrananlage zur energieeffizienten Sauerstofferzeugung unter Verwendung gemischt leitender keramischer Membranen. Der Erfindung liegt die Aufgabe zugrunde, eine Möglichkeit anzugeben, sodass unter Vermeidung der Nachteile des Standes der Technik die Energieeffizienz des MIEC-Membranverfahrens zur Sauerstoffproduktion, insbesondere mit autarken MIEC-Membrananlagen, wesentlich gesteigert wird. Erfindungsgemäß wird die Aufgabe mit einem Membrantrennverfahren zur energieeffizienten Gewinnung von Sauerstoff aus erwärmter Frischluft unter Verwendung gemischt leitender Membranen im Vakuumbetrieb, wobei die Frischluft nach Trennung des Sauerstoffs als Abluft abgeführt wird, dadurch gelöst, dass mindestens 85 % der zur Erwärmung der Frischluft erforderlichen Wärmeenergie durch Nutzung der Abwärme der Abluft und / oder des gewonnenen Sauerstoffs erfolgt, dass die restliche Erwärmung der Frischluft durch externe Energiezufuhr realisiert wird und dass das Verhältnis von Frischluft zu erzeugtem Sauerstoff im Normalbetrieb innerhalb der Grenzen 6:1 und 25:1 eingestellt wird.
Abstract:
A non-cryogenic system for producing high-purity nitrogen is connected to a coiled-tubing unit. The nitrogen is produced by passing compressed ambient air through two polymeric membrane modules connected in series. The output of the second module is a stream of high-purity nitrogen, which is conveyed into a coiled tube. The nitrogen can be used for inerting the interior of the tube, or the coiled tube can be inserted into an oil well, for delivering nitrogen into the well. The use of nitrogen in a coiled tube helps to prevent corrosion in the tube.
Abstract:
Disclosed are polymeric blend membranes, and methods for their use, that include a blend of at least a first polymer and a second polymer, wherein the first and second polymers are each selected from a polymer of intrinsic microporosity (PIM), a polyetherimide (PEI) polymer, a polyimide (PI) polymer, or a polyetherimide-siloxane (PEl-Si) polymer, and wherein the polymeric membranes have been both ultraviolet (UV)-treated and thermally-treated.