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新型高活性吸收剂脱硫脱硝实验及机理研究5 f- ]# d' |9 R
, K9 d3 C2 @( ?. f: l' x赵 毅, 马双忱, 方 华, 汪黎东, 赵 莉
- k4 g' k6 g+ } [(华北电力大学环境科学与工程学院,保定071003)% Q( S# k. X& b' r0 G+ g% o2 i
0 R6 r8 y# A1 K$ F
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" n6 P1 e/ W2 L3 H- u
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6 Z0 r- J0 R: Y5 Q6 I2 l
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6 V/ H8 z& M' a9 r+ j* J* i& p. w
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$ k- [ N, U8 }( n2 R6 {5 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' S4 S+ C; e0 }5 G5 S
8参10
( N: g/ R% ?) _9 E m; s' p4 k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
" w; H4 P1 d3 {: A F8 W中图分类号:X511 文献标识码:A
; u: e7 i a7 t! x8 n$ zExperimental Studies on Desulfurization and Denitrification with a! D2 N4 u; m8 |0 `
New Type of Highly Reactive Absorbent and the Effective Mechanism" k% q, |2 Z s2 {4 n$ R) E. f0 z
ZHAO Yi, MAShuang-chen, FANG Hua, WANGLi-dong, ZHAO Li i% ]( |* t8 v# g
(School of Environmental Science and Engineering, North China University of Electric Power, Baoding 071003, China)/ f- ]' _/ U+ O$ X
Abstract: The employed highly reactive absorbent with oxidizing capability was prepared in an anhydrous process by
% m% T) y$ o7 `' x. uusing fly ash, lime and some additives as the raw materials. Simultaneous desulfurization and denitrification tests were9 ]7 m! H& ?) e1 a8 ?) P
carried out in a flue duct, withthe objectof detectingthe factors that effectthe efficiencyof purification. The purification( F: t+ h% z+ F# {6 D& e. k+ J
mechanism of highly reactive absorbents is being discussed. Test results showthatwith a Ca/(S+N) molar ratio of 1.2,
; @+ M1 k, Z6 D Jthe purification efficiencies of SO2andNOx removal are 84% and 61% respectively. Thewaste left over appeared in the6 x0 A" D( W* ?: r' o
form of dry powder. The optimal gas temperature is 60°C, and the optimal humidity is 5%. Compared with traditional
9 l9 D9 t( ^& zdry FGD methods, this technology has the advantage of lower expenses, simpler equipment and facile disposal ofwastes.1 }4 Y- I/ c% a2 r" \+ _, {
It may serve as a valuable reference for industrial application. Figs 8 and refs 10.$ M1 h: S0 W' g1 `" G; t! W
Key words: environmental engineering; simultaneous desulfurization and denitrification; highly active absorbent;
0 @* L' I+ h/ y5 ^' coxidation; experimental study; duct injection |
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发表于 2009-8-28 10:55:50
