Method for reclaiming polyurethane foam

Details Method for reclaiming polyurethane foam Method for reclaiming polyurethane foam

1980-05-05

1982-05-04

Doll, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

560 26, 560 91, 560198, 564305, 564330, 564414, 564452, 564463, 564487, 564488, 564511, 568613, 568620, 568621, 568624, 568675, 568716, 568840, 568851, 568852, 568853, 203 95, 260453A, 260453AR, 260704, 260705, 264 37, 422232, 422239, 521 53, 521 63, 521918, C07C 8750, C09B 1102, C07C 4311, C07C 4320, C07C 8502, C07C 8524, C07C 8520, C07C 85153

Patent

active

043283683

ABSTRACT:
A method if provided for continuously hydrolyzing urethane foam in a vertically oriented hydrolysis reactor. In a preferred practice, a bed of foam particles is formed in the reactor. Superheated steam is flowed continuously upward through the bed at a temperature and rate such that only the foam particles then adjacent the bottom of the reactor are hydrolyzed and the bulk of the bed is not fluidized. Unreacted steam heats the unhydrolyzed foam. Liquid hydrolysis products are drained as they are formed to prevent hydrolysis-impeding liquid saturation of unhydrolyzed particles.

REFERENCES:
patent: 70956 (1867-11-01), Cashwell
patent: 2067938 (1937-01-01), McBurney et al.
patent: 3225094 (1965-12-01), Wolf
patent: 3404103 (1968-10-01), Matsudaira et al.
patent: 3441616 (1969-04-01), Pizzini et al.
patent: 3478099 (1969-11-01), Ross et al.
patent: 4025559 (1977-05-01), Johnson
patent: 4039568 (1977-08-01), Sakai et al.
patent: 4051212 (1977-09-01), Grigat et al.
patent: 4082366 (1978-04-01), Duff et al.
patent: 4196148 (1980-04-01), Mahoney

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