Abstract:
The present invention relates to a method of generating oxygen. The method addresses the objects of reducing the servicing work and improving the purity of the generated oxygen. According to the invention, the method comprises the steps of: providing an oxygen comprising gas at a primary side of a dense voltage drivable membrane (12); applying a voltage between a conductive element at the primary side of the membrane (12) and a conductive element at a secondary side of the membrane (12), the conductive elements being electrically connected to the membrane (12), wherein a plasma (18, 20) is generated at at least one of the primary side and the secondary side of the membrane (12), the plasma (18, 20) being used as conductive element.
Abstract:
The present invention is concerned with a method for the production of fine and ultrafine powders of various materials such as metals, alloys, ceramics, composites etc., through a transferred arc plasma system. The method comprises vaporizing or decomposing the material in the plasma reactor, condensing the vapor in a quench tube comprising two sections, the first one for indirectly cooling or heating the vapor, and the second one for directly cooling the vapor. The powder is recovered in a conventional collection unit. The two step condensation in the quench tube allows a substantial control of powder properties like crystallinity, size distribution and mean particle size.
Abstract:
In a process for carrying out a reaction in the gaseous phase catalytically accelerated by anion or cations, the catalyst is introduced into the gaseous reaction mixture as a free anion or cation without the corresponding counter-ion, and at least substantially without solvent. The catalyst is activated in a solvent and then the solvent and the counter-ion are substantially removed before the catalyst is introduced into the reaction mixture. This process is particularly suitable for the production of polyolefins.
Abstract:
An apparatus and a method of using the apparatus are provided for converting a gas stream containing hydrocarbons to a reaction product containing effluent molecules having at least one carbon atom, having at least one interior surface and at least one exterior surface, a first electrode and a second electrode with the first and second electrodes being selectively movable in relation to each other and positioned within the housing so as to be spatially disposed a predetermined distance from each other, a plasma discharge generator between the first and second electrodes, gas stream introducer and a collector for collecting the reaction product effluent produced by the reaction of the gas stream containing hydrocarbons with the plasma discharge between the first and second electrodes.
Abstract:
A process for the production of powdered materials having a particle size in the range of from 10 to 200 nanometers, which process comprises coupling at least two plasma arcs of opposite polarity in a reactor to form a plasma arc coupling zone, subjecting a target material to heating by means of the plasma arc coupling zone thereby causing the target material to fume, optionally subjecting the target material to a chemical reaction to form a product material, entraining the fumed target material or product material in a gas stream, cooling the said gas stream and collecting the powdered target material or product material.
Abstract:
A device for generating mirowave plasma which emits microwaves to an electric discharge space in order to stably generate plasma covering a wide range at a fixed position for a long time, characterized by being provided with a plurality of microwave emitting means to continuously emit microwave pulses at different timings in emitting microwave pulses; and a method of making diamond film characterized by synthesizing diamond thin film utilizing said microwave plasma generating device for efficiently forming diamond thin film uniform in thickness on a wide-area substrate; thereby capable of providing a useful microwave generating device and diamond thin film.
Abstract:
A multiple cathode (Fig. 1, 12, 13, 14) DC arc plasma generator (11) arrangement (10) is used in connection with a single anode for thermal arc plasma processing of materials. A nozzle (32) is provided to introduce a gas in approximately the center of the multiple cathodes (12, 13, 14), towards the anode (11). The nozzle (32) injects the gas into the center of the plasma column (39) generated between the cathodes (12, 13, 14) and anode (11) to stabilize such column and affect the self-induced electrode jets. This provides control of the heat transfer to the anode (11) and permits feeding of particulate matter (41) into the core (40) of the plasma column (39) to enhance inflight processing (melting and/or chemical reaction) of the matter. A set of gas nozzles (56) positioned radially about the anode (11) may be employed for feeding of particulate matter at the anode surface.
Abstract:
Methods of sequestering toxin particulates are described herein. In a primary processing chamber, a carbon source of toxin particulates may be combined with plasma from three plasma torches to form a first fluid mixture and vitrified toxin residue. Each torch may have a working gas including oxygen gas, water vapor, and carbon dioxide gas. The vitrified toxin residue is removed. The first fluid mixture may be cooled in a first heat exchange device to form a second fluid mixture. The second fluid mixture may contact a wet scrubber. The final product from the wet scrubber may be used as a fuel product.
Abstract:
A plasma reactor has an overhead multiple coil inductive plasma source with symmetric RF feeds and a symmetrical chamber exhaust with plural struts through the exhaust region providing access to a confined workpiece support. A grid may be included for masking spatial effects of the struts from the processing region.
Abstract:
Monatomic metal anions are generated in the gas phase by collision-induced dissociation of the anions [26] of a dicarboxylic acid salt of the metal. This method is applicable to a number of metals, including sodium, potassium, cesium, and silver. The metal anions produced in this way can subsequently be stored in an ion trap [88] or transmitted as a focused beam [52]. The metal anions of this invention undergo collisional cooling and have low kinetic energy, which distinguishes them from ions produced by other high energy processes (with kinetic energy in excess of 1 keV). Metal anions so produced can be used to pattern nanoscale features on surfaces [56], used as electron transfer agents or reducing agents in ion-molecule reactions, or used for surface [122] modification of biomaterials [124].