Coke oven door sealing unit for sealing a coke oven door against a sealing surface of a coke oven door frame of a coke oven chamber, the coke oven door sealing unit including: a coke oven door for fitting into the coke oven door frame of the coke oven chamber; a fixture device for holding a sealing piece opposite to the coke oven door frame in a peripheral area of the coke oven door; the sealing piece, where the sealing piece is configured to be operated in a first operating state or a second operating state; a seal protection element for isolating the sealing piece from the coke oven chamber; where, in a first operating state, the sealing piece is spaced at a first distance from a sealing surface arranged opposite of the sealing piece; and where, in a second operating state, the sealing piece contacts the sealing surface; such that in the second operating state, the sealing piece and the seal protection element at least partially form a cavity.

Systems and methods for recycling waste plastics are provided, including a system for recovering styrene monomer from waste polystyrene. The system includes a mixing, heating and compacting apparatus to receive a supply of waste polystyrene and to output a densified polystyrene containing melt; a pyrolysis reactor configured to receive the densified polystyrene containing melt and a supply of recycled oligomers, pyrolyze the densified polystyrene containing melt and the recycled oligomers, and output a hydrocarbon gas stream and a solids residue stream; a quenching apparatus configured to receive the hydrocarbon gas stream output from the pyrolysis reactor and condense out oligomers for routing upstream to the pyrolysis reactor to be combined as the supply of recycled oligomers with the densified polystyrene containing melt, and to discharge an altered hydrocarbon gas stream for further processing; and a condenser configured to receive the altered hydrocarbon gas stream from the quenching apparatus and condense out styrene to form a styrene monomer oil product.

Systems and methods for recycling waste plastics are provided, including a system for recovering styrene monomer from waste polystyrene. The system includes a mixing, heating and compacting apparatus to receive a supply of waste polystyrene and to output a densified polystyrene containing melt; a pyrolysis reactor configured to receive the densified polystyrene containing melt and a supply of recycled oligomers, pyrolyze the densified polystyrene containing melt and the recycled oligomers, and output a hydrocarbon gas stream and a solids residue stream; a quenching apparatus configured to receive the hydrocarbon gas stream output from the pyrolysis reactor and condense out oligomers for routing upstream to the pyrolysis reactor to be combined as the supply of recycled oligomers with the densified polystyrene containing melt, and to discharge an altered hydrocarbon gas stream for further processing; and a condenser configured to receive the altered hydrocarbon gas stream from the quenching apparatus and condense out styrene to form a styrene monomer oil product.

An apparatus and method for reducing an organic-containing material into lower molecular weight gaseous hydrocarbons, liquid hydrocarbons and solid carbon constituents utilizing microwave radiation.

An apparatus and method for reducing an organic-containing material into lower molecular weight gaseous hydrocarbons, liquid hydrocarbons and solid carbon constituents utilizing microwave radiation.

Electric-powered, closed-loop, continuous-feed, endothermic energy-conversion systems and methods are disclosed. In one embodiment, the presently disclosed energy-conversion system includes a shaftless auger. In another embodiment, the presently disclosed energy-conversion system includes a drag conveyor. In yet another embodiment, the presently disclosed energy-conversion system includes a distillation and/or fractionating stage. The endothermic energy-conversion systems and methods feature mechanisms for natural resource recovery, refining, and recycling, such as secondary recovery of metals, minerals, nutrients, and/or carbon char.

Reactor for processing biomass, e.g. into biochar or bio cokes, with a reactor enclosure (2) having a transport unit (5). In a first reactor section (6) first gas injectors (11) are positioned below the transport unit (5), and first oxidant injectors (12) are positioned above transport unit (5). In a second reactor section (7) second gas injectors (13) are positioned below the transport unit (5), and second oxidant injectors (14) are positioned above the transport unit (5). In a the third reactor section (8) third gas injectors (15) are provided below the transport unit (5). The first, second and third gas injectors (11, 13, 15) are further arranged to output a first, second, and third gas, respectively, each having a low oxygen content, and the first and second oxidant injectors (12, 14) are arranged to output an oxidizing gas only for providing radiation heat energy, using a control unit (20).

The disclosure provides several pyrolysis reactor configurations and associated methods for generating pyrolysis products (e.g., oil, gas, and/or char) from organic feedstock.

The disclosure provides several pyrolysis reactor configurations and associated methods for generating pyrolysis products (e.g., oil, gas, and/or char) from organic feedstock.

Systems and methods for recycling waste plastics are provided, including a system for recovering styrene monomer from waste polystyrene. The system includes a mixing, heating and compacting apparatus to receive a supply of waste polystyrene and to output a densified polystyrene containing melt; a pyrolysis reactor configured to receive the densified polystyrene containing melt and a supply of recycled oligomers, pyrolyze the densified polystyrene containing melt and the recycled oligomers, and output a hydrocarbon gas stream and a solids residue stream; a quenching apparatus configured to receive the hydrocarbon gas stream output from the pyrolysis reactor and condense out oligomers for routing upstream to the pyrolysis reactor to be combined as the supply of recycled oligomers with the densified polystyrene containing melt, and to discharge an altered hydrocarbon gas stream for further processing; and a condenser configured to receive the altered hydrocarbon gas stream from the quenching apparatus and condense out styrene to form a styrene monomer oil product.