Patent ID: 6660236
Filing Date: 2003-12-09
Classification: C08J,Y02P,Y02W

Abstract:
An apparatus for decomposing a polyurethane resin and recovering a polyamine compound and a polyol compound from the decomposed polyurethane resin, the apparatus comprising:a first reactor that decomposes the polyurethane resin via aminolysis to form a target compound for hydrolysis, wherein said aminolysis is caused by combining the polyurethane resin with a polyamine compound to decompose the polyurethane resin into the target compound; a second reactor that hydrolyzes the target compound formed in the first reactor with either one of supercritical water or high-temperature high-pressure water to produce a decomposition product mixture; a filter disposed in a pathway between the first reactor and the second reactor, said pathway for feeding the target compound formed in the first reactor to the second reactor, a water supplier that feeds said either one of supercritical water or high-temperature high-pressure water to said second reactor; a post-processor that recovers a polyamine compound and a polyol compound from the decomposition product mixture discharged from the second reactor; and a reflux system that refluxes a part of the recovered polyamine compound from a position downstream of the second reactor to the first reactor.