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新型高活性吸收剂脱硫脱硝实验及机理研究. I& |2 n/ \8 J9 M! B+ C, J8 O
( k; W2 P/ g' G) u* Q* _# u赵 毅, 马双忱, 方 华, 汪黎东, 赵 莉
1 _& n2 @ ]1 L/ K" W" y( |0 J(华北电力大学环境科学与工程学院,保定071003). Y4 S7 U% B$ \) y2 w0 y+ w
- h. r$ D% o& `
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
& O8 S! ~, v h. p0 M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8 V$ \8 Q m- k9 J( F Q1 D, x
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
! X. o; Q Z* s) P3 z: }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, C4 b* y' d/ i+ D) [. C
FGD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
( ?& t, R: G0 L! c6 u9 a0 k) b2 m8参10! @5 N" f1 `0 H. y3 I
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
$ Q1 U! t" g j/ J中图分类号:X511 文献标识码:A2 h1 \- d9 {: k0 B
Experimental Studies on Desulfurization and Denitrification with a
8 p- r2 L2 k1 W6 q$ W) q! ^% wNew Type of Highly Reactive Absorbent and the Effective Mechanism
, J% C+ b& ]0 ^# T4 RZHAO Yi, MAShuang-chen, FANG Hua, WANGLi-dong, ZHAO Li
8 n; Y6 H: O. x5 P(School of Environmental Science and Engineering, North China University of Electric Power, Baoding 071003, China)$ u4 T6 B; q/ E R$ k# w
Abstract: The employed highly reactive absorbent with oxidizing capability was prepared in an anhydrous process by
' ?& R, c# V$ G _! Lusing fly ash, lime and some additives as the raw materials. Simultaneous desulfurization and denitrification tests were
: o' \$ w( Z @; C+ |; Q4 y) Gcarried out in a flue duct, withthe objectof detectingthe factors that effectthe efficiencyof purification. The purification* N) @# _: L* R( w. P( B" S, S
mechanism of highly reactive absorbents is being discussed. Test results showthatwith a Ca/(S+N) molar ratio of 1.2,
- |9 u7 x- J i8 L' A2 ~the purification efficiencies of SO2andNOx removal are 84% and 61% respectively. Thewaste left over appeared in the {4 F) Q. f5 @# _
form of dry powder. The optimal gas temperature is 60°C, and the optimal humidity is 5%. Compared with traditional
" M6 ~4 W8 h: `$ fdry FGD methods, this technology has the advantage of lower expenses, simpler equipment and facile disposal ofwastes.1 _# d4 j: H; a
It may serve as a valuable reference for industrial application. Figs 8 and refs 10.0 Y' U% i" g- J% u/ a4 d# k
Key words: environmental engineering; simultaneous desulfurization and denitrification; highly active absorbent;
2 D l/ h2 z( R z& D/ Qoxidation; experimental study; duct injection |
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发表于 2009-8-28 10:55:50
