|
|
马上注册，结识高手，享用更多资源，轻松玩转三维网社区。
您需要 登录 才可以下载或查看，没有帐号？注册
x
新型高活性吸收剂脱硫脱硝实验及机理研究
0 C& J+ Y' A- f& W5 E' d% o2 i# x! q& A
赵 毅, 马双忱, 方 华, 汪黎东, 赵 莉
( w9 q, O5 @* r+ L- o x/ g3 M(华北电力大学环境科学与工程学院,保定071003)
7 H+ k1 G3 u/ d9 p W* N9 i, A4 |( }
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# s1 s2 g3 ]4 J3 c, \
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& s/ _" ~2 f- k2 @3 S3 `
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: p" R9 G$ `. s; C5 ^
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5 [& `8 a" L' m. [ ^
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
* D4 d; f0 h8 M7 L$ v8 H! s! b4 S8参105 \3 K) k1 P+ G( m
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
6 h, P) Y% ~0 d& J2 x6 s+ V中图分类号:X511 文献标识码:A3 e9 @) b) d3 E! n, W5 O4 n
Experimental Studies on Desulfurization and Denitrification with a
1 P' g; C _4 u" y: xNew Type of Highly Reactive Absorbent and the Effective Mechanism3 o* T' ?6 ? n# n
ZHAO Yi, MAShuang-chen, FANG Hua, WANGLi-dong, ZHAO Li
# `" K+ G9 e$ T% D9 b. t l9 b+ U7 G(School of Environmental Science and Engineering, North China University of Electric Power, Baoding 071003, China)
7 j; N }* p- V/ s9 xAbstract: The employed highly reactive absorbent with oxidizing capability was prepared in an anhydrous process by2 ], Q. y* J- X% ~0 ]* a3 \
using fly ash, lime and some additives as the raw materials. Simultaneous desulfurization and denitrification tests were
2 c' {" X7 {) b, J+ K: X' Tcarried out in a flue duct, withthe objectof detectingthe factors that effectthe efficiencyof purification. The purification d: U3 r6 T7 U3 G3 `7 R
mechanism of highly reactive absorbents is being discussed. Test results showthatwith a Ca/(S+N) molar ratio of 1.2,
. X1 V5 b( n/ l) w4 t8 R% }& n2 Pthe purification efficiencies of SO2andNOx removal are 84% and 61% respectively. Thewaste left over appeared in the- M4 T! v4 x3 ~8 W$ C0 F) J
form of dry powder. The optimal gas temperature is 60°C, and the optimal humidity is 5%. Compared with traditional: { a. k7 z$ \8 |& k2 }! s: m
dry FGD methods, this technology has the advantage of lower expenses, simpler equipment and facile disposal ofwastes.
% v6 y3 P4 E8 ~1 P+ [ kIt may serve as a valuable reference for industrial application. Figs 8 and refs 10.
- j% Q7 z: H+ X# o7 g% nKey words: environmental engineering; simultaneous desulfurization and denitrification; highly active absorbent;7 W/ m3 B! u; H' {3 k$ E5 X& l
oxidation; experimental study; duct injection |
|
发表于 2009-8-28 10:55:50
