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Title: Multiport cylinder dryer with low thermal resistance and high heat transfer

Abstract

A multiport cylinder dryer for use with drying a web of pulp, paper, or similar material, and a method for drying a moving web of pulp, paper, or similar material are provided. The multiport cylinder dryer includes an outer cylinder dryer surface for transferring heat to a moving web to be dried. A plurality of multiport flow passages are positioned close to the outer cylinder dryer surface. The multiport flow passages are arranged for channeling steam flow for heating the cylinder dryer surface. The multiport cylinder dryer achieves significantly higher drying rates than conventional dryers by minimizing the condensate layer and maximizing the heat transfer surface area. The dominant heat transfer mode in the multiport cylinder dryer is convection, which is significantly more effective than conduction, the dominant heat transfer mode in conventional dryers.

Inventors:
Issue Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531444
Patent Number(s):
6,397,489
Application Number:
09/648,693
Assignee:
The University of Chicago (Chicago, IL)
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 2000-08-25
Country of Publication:
United States
Language:
English

Citation Formats

Choi, Stephen U. Multiport cylinder dryer with low thermal resistance and high heat transfer. United States: N. p., 2002. Web.
Choi, Stephen U. Multiport cylinder dryer with low thermal resistance and high heat transfer. United States.
Choi, Stephen U. Tue . "Multiport cylinder dryer with low thermal resistance and high heat transfer". United States. https://www.osti.gov/servlets/purl/1531444.
@article{osti_1531444,
title = {Multiport cylinder dryer with low thermal resistance and high heat transfer},
author = {Choi, Stephen U.},
abstractNote = {A multiport cylinder dryer for use with drying a web of pulp, paper, or similar material, and a method for drying a moving web of pulp, paper, or similar material are provided. The multiport cylinder dryer includes an outer cylinder dryer surface for transferring heat to a moving web to be dried. A plurality of multiport flow passages are positioned close to the outer cylinder dryer surface. The multiport flow passages are arranged for channeling steam flow for heating the cylinder dryer surface. The multiport cylinder dryer achieves significantly higher drying rates than conventional dryers by minimizing the condensate layer and maximizing the heat transfer surface area. The dominant heat transfer mode in the multiport cylinder dryer is convection, which is significantly more effective than conduction, the dominant heat transfer mode in conventional dryers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {6}
}

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Works referenced in this record:

Condensate control for dryer drum
patent, May 1979


Paper web drying apparatus having a hood with two sections
patent, July 1984


Method for improved rush transfer to produce high bulk without macrofolds
patent, November 1998


Condensate discharging device
patent, March 1980


Apparatus containing a work surface heated with a heat carrier medium
patent, September 1990


Apparatus for drying veneer sheet
patent, April 1984


Photosensitive material drying apparatus
patent, January 1992


Dryer apparatus for fiber webs
patent, December 2000


Gas-fired drying apparatus
patent, December 1998


Steam-heated roller with cooling system
patent, February 2001