Abstract: The invention relates to a system and process for thermo-chemical transformation of mixed wet waste streams using a rotary kiln reactor equipped with a multi-annular concentric feed assembly. A central conduit introduces wet food waste mixed with plastics, biodegradable packaging, and fluorinated materials, while an intermediate annulus supplies auxiliary fuel and an outer annulus delivers oxidant gas under controlled sub-stoichiometric conditions. The kiln operates through sequential zones of reduction, partial oxidation, and complete oxidation to convert organics into hydrogen, carbon monoxide, methane, and finally carbon dioxide and water. Halogens and sulfur compounds are converted to hydrogen halides and hydrogen sulfide, which are neutralized downstream with calcium oxide to form stable salts. Heat recovery from the flue gas produces steam or hot water.

Abstract: A port assembly for controlling the delivery of gases into the horizontal rotating reactor such as kiln gasifier is disclosed for introducing reactant gases. The port assembly comprises a cylindrical conduit is divided into noncommunicating four or more sections extending through the entire length of the kiln and supported by the stationary end plates of the rotating kiln gasifier. Each section of the conduit communicates with external supply of the reactant gases and each supply of reactant gases is independently controlled in terms of the composition and quantity. Each section of the port assembly communicates with the interior of the kiln gasifier through the plurality of nozzles are confined in the lower part of the conduit. The number and the size of the nozzles in individual section of the conduit is based on the desired flow of gases and available pressure for the supply of the reactant gases.

Abstract: A rotating air distributor for rotary reactors such as rotary kilns for the gasification of biomass and other carbonaceous materials for efficient mixing and maximum conversion of solid biomass and other carbonaceous materials into synthesis fuel gas is disclosed. The invention includes a gas distribution port comprises of one main supply from which several discharge nozzles emerge at different angles and at different locations along the length of the reactor to provide distribution of gas throughout the intended length of the reactor. The discharge of gas from the gas distribution port is adjusted by the variable position of a plug inside the port that can be adjusted during the operation of the kiln to achieve optimum gas-solid interaction along the length of the reactor. The rotating action of the gas distribution port also facilitates and eases the passage of reacted biomass solid and other carbonaceous material residue through the reactor.

Abstract: The present application discloses a common purpose apparatus for carrying out physical and chemical reactions of carbonaceous materials with oxygen bearing gases and preheated gases that is used for carrying out thermo chemical transformation of carbonaceous materials into gaseous and liquid fuels, and for combusting carbonaceous fuels and to recover energy there from, and for remediating hydrocarbon-contaminated materials, and further for producing bio-chars from biomass.