新型高活性吸收剂脱硫脱硝实验及机理研究CAJ【期刊文献】

leba1995

新型高活性吸收剂脱硫脱硝实验及机理研究

赵　毅,　马双忱,　方　华,　汪黎东,　赵　莉
(华北电力大学环境科学与工程学院,保定071003)
, }* s. l' a$ W& T" q  m
6 n5 Z2 {4 B5 E1 i, m& q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
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
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
. F* H- M: D; `9 l" {; S84%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" N7 D9 P+ iFGD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
) N0 m6 \$ T, u/ ~8参10
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
中图分类号:X511　　　文献标识码:A
9 }5 W* g4 F7 z1 H  R0 aExperimental Studies on Desulfurization and Denitrification with a
New Type of Highly Reactive Absorbent and the Effective Mechanism
ZHAO　Yi,　MAShuang-chen,　FANG　Hua,　WANGLi-dong,　ZHAO　Li
; @3 f6 c* m8 P- J0 R2 P& @(School of Environmental Science and Engineering, North China University of Electric Power, Baoding 071003, China)
2 j2 I: P/ T8 T) H5 yAbstract: The employed highly reactive absorbent with oxidizing capability was prepared in an anhydrous process by
using fly ash, lime and some additives as the raw materials. Simultaneous desulfurization and denitrification tests were
carried out in a flue duct, withthe objectof detectingthe factors that effectthe efficiencyof purification. The purification
mechanism of highly reactive absorbents is being discussed. Test results showthatwith a Ca/(S+N) molar ratio of 1.2,
" U2 |2 t5 d$ e. D! }' e0 }" ]the purification efficiencies of SO2andNOx removal are 84% and 61% respectively. Thewaste left over appeared in the
2 `7 I. }' K7 t! X5 f) R/ ?form of dry powder. The optimal gas temperature is 60°C, and the optimal humidity is 5%. Compared with traditional
dry FGD methods, this technology has the advantage of lower expenses, simpler equipment and facile disposal ofwastes.
9 a, x& S3 B% K( k! TIt may serve as a valuable reference for industrial application. Figs 8 and refs 10.
Key words: environmental engineering; simultaneous desulfurization and denitrification; highly active absorbent;
oxidation; experimental study; duct injection