Nitrogen transformation during coal decoulping combustionⅡ: NO and N<sub>2</sub>O reduction with single component of pyrolysis gas

XIE Jian-jun; YANG Xue-min; CHEN An-hei; DING Tong-li; SONG Wen-li; LIN Wei-gang

Volume 40 Issue 09

Sep. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(09): 1051-1059

XIE Jian-jun, YANG Xue-min, CHEN An-hei, DING Tong-li, SONG Wen-li, LIN Wei-gang. Nitrogen transformation during coal decoulping combustionⅡ: NO and N2O reduction with single component of pyrolysis gas[J]. Journal of Fuel Chemistry and Technology, 2012, 40(09): 1051-1059.

Citation:

XIE Jian-jun, YANG Xue-min, CHEN An-hei, DING Tong-li, SONG Wen-li, LIN Wei-gang. Nitrogen transformation during coal decoulping combustionⅡ: NO and N₂O reduction with single component of pyrolysis gas[J]. Journal of Fuel Chemistry and Technology, 2012, 40(09): 1051-1059.

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Nitrogen transformation during coal decoulping combustionⅡ: NO and N₂O reduction with single component of pyrolysis gas

1.
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2011-11-07
Rev Recd Date: 2012-02-26
Publish Date: 2012-09-29

Abstract

Abstract

Reduction of NO and N₂O with the simulated pyrolysis gas has been experimentally studied in an ideal plug flow reactor. The influences of reaction temperature, excess air number λ, concentrations of CH₄, CO, H₂, NH₃ in the simulated pyrolysis gas, concentrations of NO and N₂O in the flue gas on concentration of NO as well N₂O and total nitrogen conversion efficiency have been discussed. The results show that CH₄, CO and H₂ cannot effectively react with NO at 973~1 223 K. About 0~30% of the inlet N₂O can be reduced by CH₄, CO, or H₂ when λ is equal to or less than 1.0. Furthermore, about 10%~60% of the inlet NO can be reduced by NH₃, however, no N₂O concentration change is found when N₂O is mixed with NH₃ at 973~1 223 K.
- coal decoupling combustion,
- NO,
- N₂O,
- pyrolysis gas,
- NH₃

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References(25)

References

刘振宇. 煤炭能源中的化学问题[J]. 化学进展, 2000, 12(4): 458-462. (LIU Zhen-yu. Chemistry in coal energy[J]. Progress in Chemistry, 2000, 12(4): 458-462.)

李静海, 郭慕孙, 白蕴茹, 宋文立, 朱庆山, 姚建中, 杨励丹, 万兴中. 解耦循环流化床燃烧系统及其脱硫与脱硝方法:中国,1203117A. 1997-06-25. (LI Jing-hai, GUO Mu-sun, BAI Yun-ru, SONG Wen-li, ZHU Qing-shan, YAO Jian-zhong, WANG Xing-zhong. Decoupling combustion system in a circulating fluidized bed and strategies for desulfurization and de-NOx: CN, 1203117A. 1997-06-25.)

何京东. 煤炭解耦燃烧NO抑制机理实验研究. 北京:中国科学院研究生院, 中国科学院过程工程研究所, 2006. (HE Jing-dong. Experimental study of the reduction mechanism on NO emission in decooupling combustion of coal. Beijing: Institute of Process Engineering, Chinese Academy of Sciences, 2006.)

DONG L, GAO S, XU G. NO reduction over biomass char in the combustion process[J]. Energy Fuels, 2009, 24(1): 446-450.

谢建军, 杨学民, 朱文魁, 丁同利, 宋文立, 林伟刚. 煤炭解耦燃烧过程N迁移与转化Ⅰ: 热解阶段煤N的释放规律[J]. 燃料化学学报, 2012, 40(8): 919-926. (XIE Jian-jun, YANG Xue-min, ZHU Wen-kui, DING Tong-li, SONG Wen-li, LIN Wei-gang. Nitrogen transformation during coal decoulping combustion I: release behavior of coal-nitrogen during pyrolysis stage[J]. Journal of Fuel Chemistry and Technology, 2012, 40(8): 919-926.)

董利. 生物质解耦燃烧降低NO排放机理及应用研究. 北京:中国科学院研究生院, 中国科学院过程工程研究所, 2007. (DONG Li. NO reduction by decoupling combustion of biomass and its application. Beijing: Institute of Process Engineering, Chinese Academy of Sciences, 2007.)

王杰广. 下行循环流化床煤拔头工艺研究. 北京:中国科学院研究生院, 中国科学院过程工程研究所, 2003. (WANG Jie-guang. Experimental study of coal topping process in a downer reactor. Beijing: Institute of Process Engineering, Chinese Academy of Sciences, 2003.)

谢建军, 杨学民, 张磊, 丁同利, 姚建中, 宋文立, 林伟刚, 郭汉杰. 循环流化床燃煤过程NO、N₂O和SO₂的排放行为研究[J]. 燃料化学学报, 2006, 34(2): 151-159. (XIE Jian-jun, YANG Xue-min, ZHANG Lei, DING Tong-li, YAO Jian-zhong, SONG Wen-li, LIN Wei-gang, GUO Han-jie. Behavior of NO, N₂O and SO₂ emissions during coal combustion in a circulating fluidized bed combustor[J]. Journal of Fuel Chemistry and Technology, 2006, 34(2): 151-159.)

MILLER J A, BOWMAN C T. Mechanism and modeling of nitrogen chemistry in combustion[J]. Prog Energy Combust Sci, 1989, 15(4): 287-338.

HULGAARD T, DAM-JOHANSEN K. Homogeneous nitrous oxide formation and destruction under combustion conditions[J]. AIChE J, 1993, 39(8): 1342-1354.

GLARBORG P, DAM-JOHANSEN K, MILLER J A, KEE R J, COLTRIN M E. Modeling the thermal de-NO_X process in flow reactors. surface effects and nitrous oxide formation[J]. Int J Chem Kinet, 1994, 26(4): 421-436.

MILLER J A, GLARBORG P. Modeling the thermal De-NO_x process: Closing in on a final solution[J]. Int J Chem Kinet, 1999, 31(11): 757-765.

ZABETTA E G C, KILPINEN P T. Gas-phase conversion of NH₃ to N₂ in gasification: Part I A kinetic modelling study on the potential of the method[J]. IFRF Combust J, 1999, Article Number 199901, September, 1999.

ZABETTA E G C, KILPINEN P T. Gas-phase conversion of NH₃ to N₂ in gasification: Part II Testing the kinetic model[J]. IFRF Combust J, 2001, Article Number 200104, March, 2001.

SKREIBERG O, KILPINEN P, GLARBORG P. Ammonia chemistry below 1400 K under fuel-rich conditions in a flow reactor[J]. Combust Flame, 2004, 136(4): 501-518.

ZABETTA E C, HUPA M, SAVIHARJU K. Reducing NO_x emissions using fuel staging, air staging, and selective noncatalytic reduction in synergy[J]. Ind Eng Chem Res, 2005, 44(13): 4552-4561.

KILPINEN P, HUPA M. Homogeneous N₂O chemistry at fluidized bed combustion conditions: A kinetic modeling study[J]. Combust Flame, 1991, 85(1/2): 94-104.

WOJTOWICZ M A, PELS J R, MOULIJN J A. Combustion of coal as a source of N₂O emission[J]. Fuel Process Technol, 1993, 34(1): 1-71.

LYON R K., HARDY J E. Discovery and development of the thermal DeNO_x process[J]. Ind Eng Chem Fundam, 1986, 25(1): 19-24.

HASEGAWA T, SATO M. Study of ammonia removal from coal-gasified fuel[J]. Combust Flame, 1998, 114(1/2): 246-258.

ALZUETA M U, ROJEL H, KRISTENSEN P G, GLARBORG P, DAMJOHANSEN K. Laboratory study of the CO/NH₃/NO/O₂ system: Implications for hybrid reburn/SNCR strategies[J]. Energy Fuels, 1997, 11(3): 716-723.

WARGADALAM V J, LOFFLER G, WINTER F, HOFBAUER H. Homogeneous formation of NO and N₂O from the oxidation of HCN and NH₃ at 600-1 000℃[J]. Combust Flame, 2000, 120(4): 465-478.

GLARBORG P, ALZUETA M U, DAM-JOHANSEN K, MILLER J A. Kinetic modeling of hydrocarbon nitric oxide interactions in a flow reactor[J]. Combust Flame, 1998, 115(1/2): 1-27.

BILBAO R, MILLERA A, ALZUETA M U. Influence of the temperature and oxygen concentration on NO_x reduction in the natural-gas reburning process[J]. Ind Eng Chem Res, 1994, 33(11): 2846-2852.

KILPINEN P, GLARBORG P, HUPA M. Reburning chemistry: A kinetic modeling study[J]. Ind Eng Chem Res, 1992, 31(6): 1477-1490.

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