Abstract:
A process for the treatment of waste, the process comprising: (i) a pyrolysis step comprising treating the waste in a pyrolysis unit (1) to produce an offgas and a non-airborne, solid char material; and (ii) a plasma treatment step comprising subjecting the offgas and the non-airborne, solid char material to a plasma treatment in a plasma treatment unit (4) in the presence of oxygen and, optionally, steam, wherein the plasma treatment unit is separate from the pyrolysis unit.
Abstract:
A liquid waste feeding system having a liquid inlet to a plasma torch based waste processing chamber, disposed intermediate the primary plasma torch arrangement at the bottom end of the chamber and the top gas products outlet. the liquid inlet is positioned within the chamber such that liquid waste flowing from the inlet into the chamber is directed at a high temperature zone of waste column, and the liquid inlet is typically associated with a hot gas jet means. The hot gas jet means that provides the required high temperature zone may comprise one or more secondary plasma torches configured to provide hot gas jets into the liquid discharge zone of the inlet. Alternatively, the hot gas jet may be provided by the primary plasma torches, in which case the liquid inlet is disposed within a predetermined area close to and above at least one of the primary plasma torches.
Abstract:
A device for chemical destruction of at least one feed comprising at least one organic compound are provided. In one aspect, the device comprises at least one inductive plasma torch, means for introducing at least one plasma-forming gas into the torch, optionally when the plasma gas(es) comprise(s) no or little oxygen, means for bringing oxygen gas into the plasma or into the vicinity of the plasma, means for introducing the feed into the torch, a reaction enclosure capable of allowing thermal destruction of the gases flowing from the torch, a device allowing mixing of the gases flowing out of the reaction enclosure to be carried out, means for introducing air and/or oxygen gas into the mixing device, a device allowing recombination by cooling of at least one portion of the gases from the mixing device, the torch, the reaction enclosure, the mixing device and the recombination device being in fluidic communication.
Abstract:
A method and system for cost effectively converting a feedstock using thermal plasma, or other styles of gassifiers, into to a feedwater energy transfer system. The feedstock can be any organic material, or fossil fuel. The energy transferred in the feedwater is converted into steam which is then injected into the low turbine of a combined cycle power plant. Heat is extracted from gas product issued by a gassifier and delivered to a power plant via its feedwater system. The gassifier is a plasma gassifier and the gas product is syngas. In a further embodiment, prior to performing the step of extracting heat energy, there is provided the further step of combusting the syngas in an afterburner. An air flow, and/or EGR flow is provided to the afterburner at a rate that is varied in response to an operating characteristic of the afterburner. The air flow to the afterburner is heated.
Abstract:
A scrubber includes: a first body for burning toxic gas introduced into a combustion chamber, using a flame generated by a cathode electrode and an anode electrode, and auxiliary gases including hydrogen and oxygen; a second body which is connected with the first body and serves to induce complete combustion of the burned toxic gas in an in-chamber and indirectly cool the toxic gas; and an electrolysis unit serving to produce hydrogen and oxygen by electrolysis and supply the produced hydrogen and oxygen as auxiliary gases to the first body. In the scrubber, a high combustion rate can be achieved even at relatively low power by a combination of high energy, obtained by the combustion of hydrogen and oxygen, with combustion heat caused by plasma, and toxic gas can be more efficiently treated by increasing treatment temperature.
Abstract:
An apparatus for thermal processing of waste having organic and inorganic components comprises at least a treatment station, a cooling station and a treated material-removal station, and at least three crucibles. The treatment station is adapted to thermally treat the organic components and/or inorganic components located in a given one of the crucibles located at the treatment station. The so-treated components in this given crucible are adapted to then be cooled at the cooling station, before the treated components located in the given crucible are removed therefrom at the treated material-removal station. The three crucibles are mounted on a turntable so that the three crucibles are each at one of the stations, before synchronously all moving to each crucible's next station.