초록 ▼

A process for converting solid wastes to gases suitable for use as a town gas comprising the steps of (1) pyrolyzing solid wastes at 550°C. or higher in a pyrolyzing furnace to produce pyrolysis gases containing hydrogen, carbon monoxide and dioxide, methane and other hydrocarbons as well as chlorin

A process for converting solid wastes to gases suitable for use as a town gas comprising the steps of (1) pyrolyzing solid wastes at 550°C. or higher in a pyrolyzing furnace to produce pyrolysis gases containing hydrogen, carbon monoxide and dioxide, methane and other hydrocarbons as well as chlorine-containing compounds, sulphur-containing compounds and other impurities, (2) washing the pyrolysis gases with an aqueous alkaline solution or the like, (3) refining the washed pyrolysis gases with the hydrogen contained in the pyrolysis gases, (4) reforming the refined pyrolysis gases by steam reforming, CO conversion and/or methanation and (5) separating the excess steam and carbonic acid gas from the reformed gases. In one embodiment, the washing (2) and refining (3) may be substituted by the high-temperature steam reforming of the pyrolysis gases in hot state supplied directly from the pyrolyzing furnace.

대표청구항 ▼

A process for converting solid wastes to gases suitable for use as a town gas comprising the steps of: (1) pyrolyzing solid wastes at a temperature of at least 550°C. in a pyrolyzing furnace to produce pyrolysis gases containing hydrogen, carbon monoxide, carbonic acid gas, methane and other hydroca

A process for converting solid wastes to gases suitable for use as a town gas comprising the steps of: (1) pyrolyzing solid wastes at a temperature of at least 550°C. in a pyrolyzing furnace to produce pyrolysis gases containing hydrogen, carbon monoxide, carbonic acid gas, methane and other hydrocarbons, inert gases, chlorine-containing compounds, sulfur-containing compounds and other impurities, (2) washing the thus produced pyrolysis gases, (3) refining the thus washed pyrolysis gases, (4) reforming the thus refined pyrolysis gases with the steam contained therein by at least one member selected from low-temperature steam reforming, high-temperature steam reforming, CO conversion and methanation and (5) separating at least one member selected from the steam and carbonic acid gas from the thus reformed pyrolysis gases thereby to obtain the gases suitable for use as a town gas.