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新型高活性吸收剂脱硫脱硝实验及机理研究5 N8 T0 X2 k% m' t7 t) e
, T+ e+ N7 \% Z3 Y I2 g
赵 毅, 马双忱, 方 华, 汪黎东, 赵 莉2 [/ C9 b8 g( W% O' l
(华北电力大学环境科学与工程学院,保定071003)
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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+ y/ q" }& {$ M9 A0 ]4 y. w' 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% u* T& F6 a: _
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8 B2 x/ i8 U$ }6 f" v/ k I. D
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
* o, B4 n# X- KFGD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, j! `* R1 B# |( {
8参10) j& j7 x. q5 _, w
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% V, \8 h' Y( B% P C
中图分类号:X511 文献标识码:A( c% N1 X0 \' ~4 h! r" b. Q& K: A- W
Experimental Studies on Desulfurization and Denitrification with a
; C# W4 I( D" iNew Type of Highly Reactive Absorbent and the Effective Mechanism3 U" u9 Z% d2 h0 U8 W; w! G
ZHAO Yi, MAShuang-chen, FANG Hua, WANGLi-dong, ZHAO Li! h6 f- t" c, j4 C9 W9 ]- j2 M
(School of Environmental Science and Engineering, North China University of Electric Power, Baoding 071003, China)
3 V$ F2 L4 l8 L% X M) LAbstract: The employed highly reactive absorbent with oxidizing capability was prepared in an anhydrous process by
" C& f& ~" e6 W D; N3 U) Z7 M6 Nusing fly ash, lime and some additives as the raw materials. Simultaneous desulfurization and denitrification tests were
8 R( @% d9 i/ q* ]4 B0 Kcarried out in a flue duct, withthe objectof detectingthe factors that effectthe efficiencyof purification. The purification! X) d5 J2 j2 X7 A0 ]# A
mechanism of highly reactive absorbents is being discussed. Test results showthatwith a Ca/(S+N) molar ratio of 1.2," O. U! k+ o8 a) |- T9 |
the purification efficiencies of SO2andNOx removal are 84% and 61% respectively. Thewaste left over appeared in the4 q: a/ J8 d9 O& P+ a! u+ B* F4 [
form of dry powder. The optimal gas temperature is 60°C, and the optimal humidity is 5%. Compared with traditional* p, u8 S. d; R. }4 o, [
dry FGD methods, this technology has the advantage of lower expenses, simpler equipment and facile disposal ofwastes.
. d( y. {7 d- c) i4 L/ ]$ G' x0 wIt may serve as a valuable reference for industrial application. Figs 8 and refs 10.
5 `# E1 J. ^6 t* C4 g" P9 LKey words: environmental engineering; simultaneous desulfurization and denitrification; highly active absorbent;
! F5 d) V. K2 }+ V& O5 y& y2 joxidation; experimental study; duct injection |
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发表于 2009-8-28 10:55:50
