Accentus Plc

Aea Technology Inc.

Qinetiq Limited

United Kingdom Atomic Energy Authority

Stephen Ivor Hall

David Raybone

Michael Inman

James Timothy Shawcross

Fiona Winterbottom

Robert Frew Gillespie

David Michael Weeks

David Leslie Segal

Anthony Robert Martin

Keith H Bayliss

Robert Francis King

Martin Harte

John Stedman

Peter James Andrews

Ross Alexander Morgan

Christopher David John Manson-Whitton

A microwave plasma generator including field-enhancing electrodes consisting of opposed laminae () with a gap () between them orthogonal to the direction of propagation through the plasma generator of microwave radiation. Gas inlet () and outlet () ports are arranged so that a gaseous medium to be excited into the plasma state passes through the gap ().

Microwave plasma generator

A reactor chamber forms part of an exhaust system of an internal combustion engine. Within the chamber are electrodes between which there is disposed a bed of active material through which, in use, the exhaust gases pass. In the presence of an electrical discharge, driven by an electrical voltage applied across the electrodes, the active material has a catalytic action in the reduction of nitrogenous oxides in the exhaust and also acts to remove hydrocarbons from the exhaust gases.

Treatment of gaseous emissions

A reactor () particularly for the plasma treatment of internal combustion engine exhaust gases, in which a power supply () and a reactor bed () of the dielectric barrier discharge type are connected directly and enclosed in an earthed metal chamber () which both isolates the high voltage power supply and acts as a Faraday cage preventing the emission of electromagnetic radiation from the power supply or plasma.

Power supply for processing of gaseous media

A reaction chamber () is adapted to be coupled to a source of microwave radiation. A pair of opposed field enhancing electrodes () concentrate microwave energy so as to form plasma in a localised region between the electrodes. Gas passages are arranged for passing a gaseous medium into and out of the chamber so that the gaseous medium passes through the said localised region of plasma. The electrodes comprise electrically conducting tubes () held in electrode holders () located in the chamber wall, the electrode tubes being removable and replaceable from outside of the apparatus.

Plasma enhanced gas reactor

A reactor for the plasma-assisted processing of gaseous media comprising a reactor chamber including a gas permeable bed of active material, a power source for applying across the bed of active material a potential sufficient to establish a plasma in a gaseous medium flowing through the bed of active material and a chamber having an inlet stub and an outlet stub for constraining the gaseous medium to flow through the bed of active material, wherein the bed of active material comprises a matrix of beads of a dielectric material having an assembly of regular arrays of beads in each of which adjacent beads are connected to a high voltage input terminal or an electrical ground.

Reactor for plasma assisted gas processing

A reactor for the plasma processing of gaseous media, especially internal combustion engine exhaust, has a bed made of a body of ceramic material a series of gas permeable electrodes embedded within the bed. The electrodes are distributed to provide a predetermined electric field distribution within the bed.

Reactor for processing gaseous media

A reactor particularly for the plasma treatment of internal combustion engine exhaust gases, in which a power supply and reactor bed are connected directly and enclosed in an earthed metal chamber which both isolates the high voltage power supply and acts as a Faraday cage preventing the emission of electromagnetic radiation from the power supply or plasma.

Gas purification device

A reactor for the plasma processing of gaseous media, especially internal combustion engine exhaust, has a bed made of a body of ceramic material and electrodes. At least one electrode terminates within the bed at a distance from earthed supporting structure to avoid or reduce the risk of tracking or arcing between the electrode and the supporting structure.

A plasma enhanced gas reactor including a reaction chamber having a pair of field-enhancing electrodes each of which has an axial passage through it by one of which a reactant gas is admitted to the reaction chamber, and by the other of which reaction products are removed from the reaction chamber.

Plasma gas processing

An apparatus for detecting the presence of volatile substances in a gaseous medium, including apparatus for producing within a sensor chamber a localised electric field the energy density of which is sufficient to excite the gaseous medium to a plasma condition, and apparatus for detecting changes in a parameter of the plasma due to the presence of the volatile substances in the gaseous medium.

Detection of volatile substances

A method of removing particulate and other materials from the exhaust gases from an internal combustion engine in which the exhaust gas is passed through a bed of charged ferro-electric materials. Three forms of apparatus for carrying out the method are described.

Growing community of inventors

Oxford, United Kingdom

Stephen Ivor Hall