CAJ | 학술논문

以稻壳（ RH）、梧桐叶（ PTL）和木屑（ SD）为对象，利用携带流脱硝实验装置，研究了生物质种类、再燃反应温度（ t2）、再燃区化学计量比（ SR2）、喷氨位置、水蒸气以及添加剂等对生物质高级再燃（ AR）脱硝效率的影响，分析了高级再燃过程中钾和氯等元素的释放特性。结果表明，在t2为850～1150℃，随着t2升高，生物质高级再燃脱硝效率呈现先上升后下降的趋势。在SR2为0．5～1．0，随着SR2增加，稻壳高级再燃脱硝效率呈现先增加后降低的趋势。停留时间为0．4～1．0 s，氨气添加位置对稻壳高级再燃脱硝效率有一定的影响，但其效果并不明显。烟气中水蒸气含量（0～15％）可提高稻壳高级再燃的脱硝效率，而且可拓宽脱硝温度窗口。不同再燃温度下，4％水蒸气含量模拟烟气的脱硝效率最大。添加剂（ Fe2 O3、KCl、NaCl和CaO）对稻壳高级再燃脱硝均有促进作用，其中，Fe2 O3促进作用最为显著。在稻壳高级再燃过程中，氯和钾元素释放率分别达到95．0％和59．8％以上。
이도각（ RH）、오동협（ PTL）화목설（ SD）위대상，이용휴대류탈초실험장치，연구료생물질충류、재연반응온도（ t2）、재연구화학계량비（ SR2）、분안위치、수증기이급첨가제등대생물질고급재연（ AR）탈초효솔적영향，분석료고급재연과정중갑화록등원소적석방특성。결과표명，재t2위850～1150℃，수착t2승고，생물질고급재연탈초효솔정현선상승후하강적추세。재SR2위0．5～1．0，수착SR2증가，도각고급재연탈초효솔정현선증가후강저적추세。정류시간위0．4～1．0 s，안기첨가위치대도각고급재연탈초효솔유일정적영향，단기효과병불명현。연기중수증기함량（0～15％）가제고도각고급재연적탈초효솔，이차가탁관탈초온도창구。불동재연온도하，4％수증기함량모의연기적탈초효솔최대。첨가제（ Fe2 O3、KCl、NaCl화CaO）대도각고급재연탈초균유촉진작용，기중，Fe2 O3촉진작용최위현저。재도각고급재연과정중，록화갑원소석방솔분별체도95．0％화59．8％이상。
NO reduction through advanced reburning ( AR) with biomass including rice husk ( RH) , phoenix tree leaves ( PTL) and saw dust ( SD) was tested in an entrained flow reactor (E FR) .The effects of reburning fuel specei s, reaction temperature in ht e reburning-zone ( t2 ) , the location of ammonia injectio n, water vapor and additives on the NO reduction were investigated.Furtherm ore, the migrta iono f chlro ide andp otas ium elements during biomass advanced reburnni g was examined.The results inid cate that the NOr emvo al efficiency via biomass advanced reub rning hs ows a tendency of increase first and decrease later with ni creasing ther eacit on temperature in the reburning-zone from 850 ℃ to 1 150 ℃.The same tendencyi s alsof ound as SR2 increases from 0.5 to 1.0.The location of ammonai injection has a certain influence on the NO reduction with rice husk when the residence time isi n the range of 0.4~1.0 s.The water vapor( 0~15%) in the flue gas not only improves the NO removal efficiency, but also broadens the window temperature of DeNOx , and the best NO removal efficiency can be obtained when the water vapor is about 4%.Additives( Fe2 O3 , KCl, NaCl and CaO) have a better promoting effects on the NO reduction through advanced reburning with rice husk, in which Fe2 O3 shows the most significant effect on the NO reduction.The relae se of chlorine and potassium during advanced er burning with ir ce husk can reach more than 95.0%and 59.8%, respectively.