METHOD FOR RECYCLING WASTE MATERIAL WITH REDUCED ODOR EMISSION

A method for recycling waste material including waste paper comprises the steps of introducing the waste material into a pressure vessel, re-pulping the waste paper in the pressure vessel at an elevated processing temperature and pressure to form a treated waste material including substantially re-p...

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Bibliographische Detailangaben
Hauptverfasser: Bradley E. LUCAS, David Christer HENRIKSSON, Wayne Frederick WINKLER
Format: Patent
Sprache:eng ; spa
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Beschreibung
Zusammenfassung:A method for recycling waste material including waste paper comprises the steps of introducing the waste material into a pressure vessel, re-pulping the waste paper in the pressure vessel at an elevated processing temperature and pressure to form a treated waste material including substantially re-pulped waste paper, thereafter introducing cooling water into the pressure vessel so as to cool the treated waste material in the pressure vessel to a discharge temperature below the elevated processing temperature and reduce odor emitted by the treated waste material, and thereafter discharging the treated waste material from the pressure vessel. The recovered paper pulp fraction is suitable as a feedstock in the manufacture of a variety of paper products including paper tissue and paper towel products. Un método para reciclar material residual que incluye papel residual que comprende las etapas de introducir el material residual en un recipiente a presión, repulpear el papel residual en el recipiente a presión a una temperatura y presión de procesamiento elevadas para formar un material residual tratado que incluye papel residual sustancialmente repulpeado, introducir posteriormente agua de enfriamiento en el recipiente a presión de manera que se enfríe el material residual tratado en el recipiente a presión a una temperatura de descarga por debajo de la temperatura de procesamiento elevada y reducir el olor emitido por el material residual tratado y posteriormente, descargar el material residual tratado del recipiente a presión. La fracción de pasta de papel recuperada es adecuada como materia prima en la fabricación de una diversidad de productos de papel, incluyendo papel tisú y productos de papel de cocina.