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新型高活性吸收剂脱硫脱硝实验及机理研究) D) ]( q9 o. l! q/ F9 `% E
4 n4 o' u- \, l& r赵 毅, 马双忱, 方 华, 汪黎东, 赵 莉
; x" H, \/ l+ `" l1 d(华北电力大学环境科学与工程学院,保定071003)
6 b% u6 j& P7 s6 R$ \
% o+ r0 f% Q- w+ ]7 k0 _ V3 C摘 要:以粉煤灰、石灰、添加剂为原料,采用干法工艺制备了具有氧化能力的高活性吸收剂。在
& W: l' A! U- X1 I8 {/ R- ^4 v烟气管道进行了同时脱硫脱硝的实验,研究了影响脱除效率的若干因素。探讨了高活性吸收剂脱
& g) W# W- d/ v) ]硫脱硝的机理。试验结果表明,在Ca/(S+N)克分子比为1.2时,SO2和NOx的脱除效率分别为+ g" z9 O% O1 f
84%和61%。产生的废物为干粉状。最佳的烟气温度为60°C,烟气湿度为5%。与传统的干法
: Q B1 U4 v0 l J: v9 [9 GFGD相比,该工艺具有费用低、设备简单、废物易于处置等优点,可为工业化应用提供有益参考。图, a% i# i2 u. `* @2 Q
8参10, U# R+ s9 v( @* j) h
关键词:环境工程学;同时脱硫脱硝;高活性吸收剂;氧化;实验研究;管道喷射
! ]" i) {5 O+ ?& H- T4 @: d中图分类号:X511 文献标识码:A
& L" G' f: C* r. M) G* @Experimental Studies on Desulfurization and Denitrification with a; X9 U( I: @' l+ @4 F3 i0 e
New Type of Highly Reactive Absorbent and the Effective Mechanism" @& o# O5 z' d/ A# w) }& \% E: V
ZHAO Yi, MAShuang-chen, FANG Hua, WANGLi-dong, ZHAO Li' r" M# Q% X6 n) }. r2 i" ~' w" H
(School of Environmental Science and Engineering, North China University of Electric Power, Baoding 071003, China)3 E4 @* v& a# T. f
Abstract: The employed highly reactive absorbent with oxidizing capability was prepared in an anhydrous process by
# i" `+ @" v' tusing fly ash, lime and some additives as the raw materials. Simultaneous desulfurization and denitrification tests were; }" M7 y" `/ o5 F
carried out in a flue duct, withthe objectof detectingthe factors that effectthe efficiencyof purification. The purification4 E1 x/ L. O" I8 v; }
mechanism of highly reactive absorbents is being discussed. Test results showthatwith a Ca/(S+N) molar ratio of 1.2,
+ U v. x7 J8 ythe purification efficiencies of SO2andNOx removal are 84% and 61% respectively. Thewaste left over appeared in the- s" t/ X/ ~& ~) |5 J; G% b' ~
form of dry powder. The optimal gas temperature is 60°C, and the optimal humidity is 5%. Compared with traditional& m, `. ?9 \6 M6 J
dry FGD methods, this technology has the advantage of lower expenses, simpler equipment and facile disposal ofwastes.1 w2 M8 i+ B* t4 \ @: Q
It may serve as a valuable reference for industrial application. Figs 8 and refs 10.
( B R. y1 q; v1 F, [1 LKey words: environmental engineering; simultaneous desulfurization and denitrification; highly active absorbent;; e: j/ {0 B/ J* L8 x+ l5 }
oxidation; experimental study; duct injection |
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发表于 2009-8-28 10:55:50
