DRYING PAPER BY IMPINGING JETS OF SUPERHEATED STEAM .2. COMPARISON OF STEAM AND AIR AS DRYING FLUIDS

被引：14
|
作者：
BOND, JF
MUJUMDAR, AS
VANHEININGEN, ARP
DOUGLAS, WJM
机构：
[1] Chemical Engineering Department, McGill University, Montreal, Quebec, H3A 2A7, Pulp and Paper Building
[2] Chemcal Engineering Department, University of New Brunswick, Fredericton, New Brunswick
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1994年 / 72卷 / 03期
关键词：
STEAM DRYING; SUPERHEATED STEAM DRYING; PAPER; PAPER DRYING; IMPINGING JETS; YANKEE DRYERS; ENERGY CONSUMPTION;
D O I：
10.1002/cjce.5450720310
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The behavior of superheated steam and air as drying fluids during the constant rate period of drying paper under impinging jets was compared in the jet temperature range 20 less-than-or-equal-to T(j) less-than-or-equal-to 465-degrees-C for jet Reynolds numbers of 1000 less-than-or-equal-to Re(j) less-than-or-equal-to 12000. At equal mass flux, steam drying is faster than air drying above the inversion temperature of 175-degrees-C. Also, the specific blower power for steam drying is much lower than for air drying at temperatures in the range of industrial importance. Superheated steam impingement drying can therefore lead to important capital investment and energy cost reductions, relative to air drying.
引用
收藏
页码：452 / 456
页数：5
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