Embodiments of the invention improve the performance, safety, and efficiency of the gasification process. Embodiments of the invention improve downdraft gasification by improving upon the systems and methods for fuel preparation and by addressing gasifier bridging and channeling. Unique parts of the system include a unique hearth and grate design, a programmable logic controller and interface for managing the gasification process, an improved filtration system, a unique system for eliminating mist, a unique system for cooling gas, a unique combined flare, an integrated auger system, and a new system and method for sampling gas.

Embodiments of the invention improve the performance, safety, and efficiency of the gasification process. Embodiments of the invention improve downdraft gasification by improving upon the systems and methods for fuel preparation and by addressing gasifier bridging and channeling. Unique parts of the system include a unique hearth and grate design, a programmable logic controller and interface for managing the gasification process, an improved filtration system, a unique system for eliminating mist, a unique system for cooling gas, a unique combined flare, an integrated auger system, and a new system and method for sampling gas.

Processes for producing high biogenic concentration Fischer-Tropsch liquids derived from the organic fraction of municipal solid wastes (MSW) feedstock that contains a relatively high concentration of biogenic carbon (derived from plants) and a relatively low concentration of non-biogenic carbon (derived from fossil sources) wherein the biogenic content of the Fischer-Tropsch liquids is the same as the biogenic content of the feedstock.

Processes for producing high biogenic concentration Fischer-Tropsch liquids derived from the organic fraction of municipal solid wastes (MSW) feedstock that contains a relatively high concentration of biogenic carbon (derived from plants) and a relatively low concentration of non-biogenic carbon (derived from fossil sources) wherein the biogenic content of the Fischer-Tropsch liquids is the same as the biogenic content of the feedstock.

A method for processing feedstock is described, characterized in that incoming feedstock is processed to selectively recover biogenic carbon material from the incoming feedstock. In some embodiments the incoming feedstock is comprised of mixed solid waste, such as municipal solid waste (MSW). In other embodiments the incoming feedstock is comprised of woody biomass. In some instances, the incoming feedstock is processed to selectively recover biogenic carbon material from the incoming feedstock to produce a processed feedstock having biogenic carbon content of 50% and greater suitable for conversion into biogenic carbon Fischer Tropsch liquids. The high biogenic carbon Fischer Tropsch liquids may be upgraded to biogenic carbon liquid fuels. Alternatively, the incoming feedstock is processed to selectively recover plastic material from the incoming feedstock to produce a processed feedstock having biogenic carbon content of 50% or less.

A method for processing feedstock is described, characterized in that incoming feedstock is processed to selectively recover biogenic carbon material from the incoming feedstock. In some embodiments the incoming feedstock is comprised of mixed solid waste, such as municipal solid waste (MSW). In other embodiments the incoming feedstock is comprised of woody biomass. In some instances, the incoming feedstock is processed to selectively recover biogenic carbon material from the incoming feedstock to produce a processed feedstock having biogenic carbon content of 50% and greater suitable for conversion into biogenic carbon Fischer Tropsch liquids. The high biogenic carbon Fischer Tropsch liquids may be upgraded to biogenic carbon liquid fuels. Alternatively, the incoming feedstock is processed to selectively recover plastic material from the incoming feedstock to produce a processed feedstock having biogenic carbon content of 50% or less.

The present disclosure relates to a modified gasification system (100) for producing syngas from waste materials having moisture content. The gasification system (100) has crossflow arrangement for circulation of gases across the solids present and has well-defined drying (120), pyrolysis (130) and gasification zones (140). A burner (150) of the gasification system (100) situated downstream of the pyrolysis zone (130) is configured to receive the pyrolysis product and a secondary oxidizer to produce a burner output gas and to supply the burner output gas to the pyrolysis zone (130) and gasification zone (140). The gasification zone (140) is additionally configured to receive a primary oxidizer gas and a tertiary oxidizer gas to aid gasification. The present disclosure overcomes limitation of the prior-arts and provides means of isolating the drying, pyrolysis, and gasification zones and eliminates tar formation during gasification. The gasification system (100) disclosed herein is a fully scalable equipment.

The present disclosure relates to a modified gasification system (100) for producing syngas from waste materials having moisture content. The gasification system (100) has crossflow arrangement for circulation of gases across the solids present and has well-defined drying (120), pyrolysis (130) and gasification zones (140). A burner (150) of the gasification system (100) situated downstream of the pyrolysis zone (130) is configured to receive the pyrolysis product and a secondary oxidizer to produce a burner output gas and to supply the burner output gas to the pyrolysis zone (130) and gasification zone (140). The gasification zone (140) is additionally configured to receive a primary oxidizer gas and a tertiary oxidizer gas to aid gasification. The present disclosure overcomes limitation of the prior-arts and provides means of isolating the drying, pyrolysis, and gasification zones and eliminates tar formation during gasification. The gasification system (100) disclosed herein is a fully scalable equipment.

An apparatus and a method for gasifying carbon-containing materials in which the material for gasification and oxygen, usually in the form of air, are supplied to a gas generator where the gasification takes place in a fixed bed reactor. The product gas is drawn off via a product gas line and introduced into a hot gas filter. A filter, preferably provided with filter candles, removes solids such as particles not yet gasified, ash and foreign bodies, while clean gas passes through and is taken off via a clean gas line. An outlet is provided in the bottom region of the hot gas filter to remove residual solids. The hot gas filter is supplied through a line with oxygen, preferably in the form of air, in its middle height region, between the filter bottom and the outlet.

Processes for producing high biogenic concentration Fischer-Tropsch liquids derived from the organic fraction of municipal solid wastes (MSW) feedstock that contains a relatively high concentration of biogenic carbon (derived from plants) and a relatively low concentration of non-biogenic carbon (derived from fossil sources) wherein the biogenic content of the Fischer-Tropsch liquids is the same as the biogenic content of the feedstock.