摘要
以稻壳、木屑、生物质炭和生物质成型燃料4种生物质为对象，利用携带流反应装置，研究了生物质种类、反应温度（乃）、化学计量比（SR2）、氨氮摩尔比（nSR）和添加剂等对生物质再燃／高级再燃脱硝效果的影响。结果表明：在T2=850—1150℃范围内，随着反应温度的升高，生物质再燃脱硝效率不断上升，而高级再燃脱硝效率则呈现先上升后降低的趋势。在nSR=0-1．5条件下，生物质高级再燃脱硝效率随着nSR增加逐渐增加，当nSR〉1．5时脱硝效率逐渐趋于稳定。在SR2=0—1．0条件下，生物质再燃脱硝效率随着SR2的增加逐渐降低，而生物质高级再燃脱硝效率呈现先增加后稍有降低的趋势。添加剂对再燃／高级脱硝均有一定的促进作用，其中Fe203促进作用最为显著。
NO reduction by reburning and advanced reburning with bioInass called rice husk （RH）, saw dust （SD）, biomass char （BC） and biomass briquette （BB） were carried out in an entrained flow reactor （EFR）. The effects of reburning fuel type, reaction temperature （T2）, stoichiometric ratio （SR2）, NH3/NOi molar ratio （nsa） and additives on NO reduction were investigated. The results indicate that NO removal efficiency of biomass reburning increases and NOx removal efficiency of biomass advanced reburning shows a tendency of increasing first and decreasing later with the increasing of reaction temperature in the reburning-zone. NO removal efficiency of biomass advanced reburning increases with increasing of NH3/NOi molar ratio at nSR = 0~1.5, and reaches stable while nSR 〉 1.5. NO removal efficiency of biomass reburning increases and NO removal efficiency of biomass advanced reburning shows the tendency of increase first and decrease later with the increase of SR2 （0-1.0）. All additives have a certain promoting effect on NO reduction and the improving effect of Fe203 on NO reduction is the more effective than other tested additives.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2014年第3期593-597,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.51076067)
江苏省自然科学基金资助项目(No.BK2010081)
关键词
生物质
再燃
高级再燃
脱硝
添加剂
biomass
reburning
advanced reburning
NOx removal
additives
