| 摘要 |
Pyrolysis system comprises: an elongated, continuously working pyrolysis furnace (1) for continuous pyrolysis of carbon-fiber-reinforced plastic materials (CFRP) material (2), with an inlet station (3) for introducing CFRP material to be processed into the pyrolysis furnace at one end; a discharge station (6) for discharging recycled carbon fiber material in the pyrolysis furnace at the other end; a gas exhaust device for a pyrolysis gas (9) produced in the pyrolysis furnace; and a control device for controlling at least the constituents of the gas in the pyrolysis furnace. Pyrolysis system comprises: an elongated, continuously working pyrolysis furnace (1) for continuous pyrolysis of carbon-fiber-reinforced plastic materials (CFRP) material (2), with an inlet station (3) for introducing CFRP material to be processed into the pyrolysis furnace at one end; a discharge station (6) for discharging recycled carbon fiber material in the pyrolysis furnace at the other end; a gas exhaust device for a pyrolysis gas (9) produced in the pyrolysis furnace; and a control device for controlling at least the constituents of the gas in the pyrolysis furnace, and for regulating the oxygen content of the gas in the pyrolysis furnace. The pyrolysis furnace is an indirectly heated rotary kiln, comprising at least one elongated rotary tube forming the receptacle for CFRP material to be processed, which is in communication with the inlet station and the discharge station. The rotary tube is provided with outlet openings at least on a part of its length on its mantle for the discharge of pyrolysis gas and an externally insulated housing at least partially surrounds the rotary tube, with passages for the inlet station and optionally also for the discharge station and discharge lines for the pyrolysis gas. Independent claims are also included for: (1) recovering carbon fibers from carbon-fiber-containing plastics, preferably carbon-fiber-reinforced plastic materials (CFRP materials), preferably from carbon-fiber-containing and/or carbon-fiber-reinforced composites, comprising subjecting the object based on a plastic material containing carbon fibers, which comprise a plastic matrix to a multi-stage pyrolysis in the presence of oxygen, decomposing the plastic matrix during pyrolysis of plastic; (2) recycled carbon fibers, obtainable by the above mentioned process; and (3) plastics materials or cementitious systems, comprising recycled carbon fibers. |
