|
|
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7 u I, M* A- s1 P0 r9 |$ G
) F; Q+ C/ y8 v. s; E
赵 毅, 马双忱, 方 华, 汪黎东, 赵 莉
; X& D* K4 I: L( y. X(华北电力大学环境科学与工程学院,保定071003)$ Y# s0 H' Z1 R" {) ^
! E, p6 K$ B: G0 V5 F" x
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$ ~, @$ m/ y( E# B/ }2 o
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' C7 P# P* J% K1 n$ q
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
, U$ |6 K/ B* _, [( h( [. ?. E84%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 s0 W0 U: ~! W) ^0 J; C1 OFGD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
W: J R* F( o8 u8 c5 }8参104 b5 a! Y; b! H8 s' 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% I c& {4 ^: o! S( [" n) f
中图分类号:X511 文献标识码:A
+ y+ T' n: m$ x* V( x |Experimental Studies on Desulfurization and Denitrification with a
0 l6 _. _; R( F& CNew Type of Highly Reactive Absorbent and the Effective Mechanism) B' F' }) V1 x& o9 Y- w/ i5 H8 ~
ZHAO Yi, MAShuang-chen, FANG Hua, WANGLi-dong, ZHAO Li+ Z' i) `3 J8 n$ T4 v4 o
(School of Environmental Science and Engineering, North China University of Electric Power, Baoding 071003, China)
* p" N% K+ v$ {7 q" `Abstract: The employed highly reactive absorbent with oxidizing capability was prepared in an anhydrous process by$ {$ G {, O7 r/ ?8 {/ L
using fly ash, lime and some additives as the raw materials. Simultaneous desulfurization and denitrification tests were
/ f+ I u) H! r8 N3 q! Scarried out in a flue duct, withthe objectof detectingthe factors that effectthe efficiencyof purification. The purification; J6 k' j j( b' h* n; j9 ^
mechanism of highly reactive absorbents is being discussed. Test results showthatwith a Ca/(S+N) molar ratio of 1.2,% l3 r8 D1 }# L+ ^" r
the purification efficiencies of SO2andNOx removal are 84% and 61% respectively. Thewaste left over appeared in the
) n7 U* J4 a Bform of dry powder. The optimal gas temperature is 60°C, and the optimal humidity is 5%. Compared with traditional
4 P/ U+ }) M1 a1 j/ ]# n! edry FGD methods, this technology has the advantage of lower expenses, simpler equipment and facile disposal ofwastes.
6 S# ^3 K, Y: D: z# Z4 BIt may serve as a valuable reference for industrial application. Figs 8 and refs 10.
% a' C& V# D& yKey words: environmental engineering; simultaneous desulfurization and denitrification; highly active absorbent;5 |3 z6 R5 |8 E6 O/ ~
oxidation; experimental study; duct injection |
|
发表于 2009-8-28 10:55:50
