ENHANCEMENT OF NOX ADSORPTION CAPACITY AND RATE OF CHAR BY MICROWAVES

被引:71
作者
CHA, CY
KONG, YG
机构
[1] Department of Chemical, Petroleum Engineering. University of Wyoming, Laramie
关键词
NITROGEN OXIDES; CHAR; ADSORPTION; MICROWAVE-INDUCED REACTIONS;
D O I
10.1016/0008-6223(95)00066-M
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The NOX were adsorbed into a char bed and then reduced by the microwaves to nitrogen and carbon oxides. High removal rates of NOX-near 98%-were observed in laboratory tests. A series of experiments were conducted to find the effect that microwave-induced regeneration of NOX saturated char had on the NOX adsorption capacity of char and the resulting adsorption rate. During the 9-cycle adsorption and reduction experiments, the adsorption capacity of char increased from 10 to 30 g NOX per 100 g char. The microwave-induced regeneration also significantly increased the rate of NOX adsorption on char. As a result, the initial breakthrough time of NOX increased from 0.01 hour for the fresh char bed to 14 hours for the char bed from the fourth microwave-induced regeneration cycle when the average residence time of gas was 2.2 seconds. The surface area of the char was increased from 82 m(2)/g to 800 m(2)/g after 9 cycles of adsorption and regeneration.
引用
收藏
页码:1141 / 1146
页数:6
相关论文
共 20 条
[1]  
BUENGER C, 1994, SPR MAT RES SOC M SA
[2]  
Cha Chang Y., 1993, U.S. Patent, Patent No. [5,256,265, 5256265]
[3]  
Cha Chang Y., 1993, U.S. Patent, Patent No. [5,269,892, 5269892]
[4]  
Cha Chang Y., 1993, U.S. Patent, Patent No. [5,246,554. 21, 5246554]
[5]   MICROWAVE-INDUCED REACTIONS OF SO2 AND NOX DECOMPOSITION IN THE CHAR-BED [J].
CHA, CY .
RESEARCH ON CHEMICAL INTERMEDIATES, 1994, 20 (01) :13-28
[6]  
CHA CY, 1993, SBIR PHASE 2 FINAL
[7]  
CHA CY, 1992, 4TH US DEP EN SEM TE
[8]   GASIFICATION OF CELLULOSIC CHARS IN OXYGEN AND IN NITROGEN-OXIDES [J].
DEGROOT, WF ;
RICHARDS, GN .
CARBON, 1991, 29 (02) :179-183
[9]   CHEMISORPTION OF OXYGEN AND OF NITRIC-OXIDE ON CELLULOSIC CHARS [J].
DEGROOT, WF ;
OSTERHELD, TH ;
RICHARDS, GN .
CARBON, 1991, 29 (02) :185-195
[10]  
HAMPARTSOUMAIN E, 1989, J I ENERGY, P402