A continuous hydrolyzation apparatus includes: a hydrolysis reaction container including a heating tube provided with a feed portion for a hydrolytic resin composition containing fibers and a feed portion for water; a screw inserted in the heating tube and configured to mix the hydrolytic resin composition with the water and to convey a mixture to a downstream side in the heating tube; and a back-pressure valve provided on a downstream side of the hydrolysis reaction container and configured to move the hydrolytic resin composition and the fibers to the downstream side while setting a pressure in the hydrolysis reaction container to a prescribed pressure to promote a hydrolysis reaction.

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted into poly(acrylic acid) (PAA) in an extensional flow device. The total energy used to degrade the SAP into PAA is less than about 50 MJ/kg SAP.

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted into poly(acrylic acid) (PAA) in an extensional flow device. The total energy used to degrade the SAP into PAA is less than about 50 MJ/kg SAP.

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted into poly(acrylic acid) (PAA) in an extensional flow device. The total energy used to degrade the SAP into PAA is less than about 50 MJ/kg SAP.

This invention relates to the field of plastic waste decomposition. More specifically, the invention comprises products obtained from the decomposition of plastic waste.

Systems and methods are provided that involve a subcritical water reaction to recycle the cellulose and polyester components of waste cotton and cotton/polyester blend textiles that would otherwise be discarded or disposed of. Specifically, the disclosed methods provide for treatment of the waste textiles to produce advanced materials including cellulose and terephthalic acid (TPA) with a low environmental impact. The cellulose and TPA that are produced are of a high quality allowing for production of regenerated cellulose and regenerated polyethylene terephthalate (PET) suitable for fiber spinning and textile applications.

Systems and methods are provided that involve a subcritical water reaction to recycle the cellulose and polyester components of waste cotton and cotton/polyester blend textiles that would otherwise be discarded or disposed of. Specifically, the disclosed methods provide for treatment of the waste textiles to produce advanced materials including cellulose and terephthalic acid (TPA) with a low environmental impact. The cellulose and TPA that are produced are of a high quality allowing for production of regenerated cellulose and regenerated polyethylene terephthalate (PET) suitable for fiber spinning and textile applications.

A thermal decomposition apparatus comprises: a thermal decomposition apparatus mechanism being provided with a thermal decomposition furnace that decomposes a panel having a plastic layer; and a superheated steam generator that generates superheated steam being supplied to the thermal decomposition furnace. A furnace body of the thermal decomposition furnace is provided with an inner wall made of metal having a space for housing the panel, and with an outer wall made of metal enclosing the inner wall. A thermal insulation material layer is provided between the inner wall and the outer wall that encloses the inner wall. A heat storage material layer is provided between the inner wall and the thermal insulation material layer.

A thermal decomposition apparatus comprises: a thermal decomposition apparatus mechanism being provided with a thermal decomposition furnace that decomposes a panel having a plastic layer; and a superheated steam generator that generates superheated steam being supplied to the thermal decomposition furnace. A furnace body of the thermal decomposition furnace is provided with an inner wall made of metal having a space for housing the panel, and with an outer wall made of metal enclosing the inner wall. A thermal insulation material layer is provided between the inner wall and the outer wall that encloses the inner wall. A heat storage material layer is provided between the inner wall and the thermal insulation material layer.

The present invention relates to a process for recycling glass fiber-reinforced plastics, in particular plastics based on polyamide, polybutylene terephthalate or polyethylene terephthalate, to recover both the monomers of the polymer and the glass used for the glass fibers.