PAPER WEB DRYING APPARATUS AND PROCESS

A paper web is dried on a paper-making machine in two stages with the downstream stage being a superheated steam impingement dryer and the upstream stage being a conventional hollow cylinder dryer, whereby the exhaust steam from the superheated steam dryer has a major portion thereof recirculated an...

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Bibliographische Detailangaben
Hauptverfasser:	CROTOGINO, REINHOLD H, DOUGLAS, W. J. MURRAY, BOND, JEAN F
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	METHODS OF PRODUCING PAPER THEREON PAPER-MAKING PAPER-MAKING MACHINES PRODUCTION OF CELLULOSE TEXTILES
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Beschreibung
Zusammenfassung:	A paper web is dried on a paper-making machine in two stages with the downstream stage being a superheated steam impingement dryer and the upstream stage being a conventional hollow cylinder dryer, whereby the exhaust steam from the superheated steam dryer has a major portion thereof recirculated and reheated in the superheated steam dryer, and the remaining portion of the exhaust steam is cooled and compressed to saturated steam and passed to the conventional dryer in the upstream dryer stage and enters the hollow cylinders to heat the hollow cylinders and thereby heat the paper passing over the other surface of the hollow cylinders.