Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, methods of making the fuel feed stocks, methods of producing energy from the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles and contain a sorbent. These feed stocks are useful for a variety of purposes including as gasification and combustion fuels. In addition, one or more sorbents can be added to the feed stocks in order to reduce the amount of a variety of pollutants present in traditional fuel and feed stocks, including, but not limited, sulfur and chlorine. Further, these feed stocks with added sorbent can mitigate corrosion, improve fuel conversion, extend power generating plant lifetime, reduce ash slagging, and reduced operating temperature.

A method and system for cost effectively converting a feedstock using thermal plasma, or other styles of gassifiers, into 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 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.

A pyrolyser may include a rotary kiln configured to pyrolyse feedstock material received therein. The pyrolyser may also include a heating vessel surrounding the rotary kiln and defining a heating chamber for hot gases. The pyrolyser may further include an agitator disposed within the heating chamber. The agitator may be configured to agitate the hot gases. The agitator may be rotatable with the rotary kiln.

The present invention relates generally to systems and methods for drying and gasifying substances using the calorific value contained in the substances, and it more specifically relates to apparatus and methods for processing wet, pasty, sticky substances, such as municipal wastewater treatment sewage sludge, into a workable, powdered product.

A process and system for the treatment of solid waste based on a temperature gradient generated by two distinct thermal sources, notably of a sequenced technological assembly, is able to process solid waste of any class, which operates through a reactor (1) having two chambers (2 and 3), each having a thermal source (4 and 5), where a thermal gradient is generated, followed by a heat exchanger (6) where gases are abruptly cooled and taken to a neutralizing tank (7), for then being directed to an activated charcoal filter (8), due to the action of a blower (9), before finally entering a burner (10) that works under electrical discharges, passing through a catalytic converter (11) and chimney (12) where it is extravasated into the completely inert atmosphere.

In order to provide a method for the purification of a raw gas stream containing water vapour that is simple and cost-efficient to perform, it is proposed that the method should comprise the following: feeding the raw gas stream to a reforming region in which contaminants in the raw gas stream react chemically with the water vapour in the raw gas stream, as a result of which a reformed raw gas stream is obtained; feeding the reformed raw gas stream and an oxidising agent stream to an oxidation region in which constituent parts of the reformed raw gas stream react chemically with oxidising agent of the oxidising agent stream, as a result of which a clean gas stream is obtained. Moreover, optionally a closed-loop control of the oxygen content is provided. Further, it is optionally provided for the clean gas stream to be fed to a condenser, as a result of which the volumetric flow of the clean gas stream is reduced and/or as a result of which energy can be recovered and used for pre-heating the oxidising agent and for other production processes.

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.

A pyrolysis process is incorporated with a pyrolysis furnace in the process. The pyrolysis furnace comprises an upper screw and a lower screw juxtaposed to the upper screw to smoothen the thermal cracking process, with each blade helically formed on the screw shaft being notched in the periphery of the screw blade to form a plurality of bifurcated fins on the blade, such that besides the conveying of feedstock in the screw as driven by the blade, the bifurcated fins may serve as agitating elements, thereby simultaneously conveying the feedstock and agitating the feedstock for increasing the production efficiency of the pyrolysis.

A continuous system for gasification of a biomass feedstock comprising: a fuel conditioning zone, a gasification zone and a char cooling area.

A method for processing meat-and-bone meal for obtaining ashes includes steps of: feeding a catalytic fluidized bed gasifier with a meat-and-bone meal and an orthosilicate with a gas stream comprising oxygen, for obtaining a synthetic gas stream and ashes, wherein the catalytic fluidized bed gasifier is at a temperature from 400 C. to 1000 C.; grinding the obtained ashes; feeding a thermal boiler with the ground ashes, the obtained synthetic gas and a gas stream comprising oxygen for separating the ashes from the orthosilicate, wherein the thermal boiler is at a temperature from 600 C. to 2000 C.; and collecting the separated ground ashes.