近十年來,由于能(neng)(neng)(neng)源(yuan)緊張,隨著節(jie)能(neng)(neng)(neng)工作進一步(bu)開展。各(ge)種新(xin)型(xing),節(jie)能(neng)(neng)(neng)先進爐型(xing)日趨(qu)完善,且(qie)采(cai)用(yong)(yong)新(xin)型(xing)耐火纖維等專(zhuan)業保溫(wen)材(cai)料(liao)后(hou)使得(de)爐窯(yao)散熱(re)損失明(ming)顯下降(jiang)。采(cai)用(yong)(yong)先進的燃(ran)燒(shao)(shao)裝置強(qiang)化了(le)燃(ran)燒(shao)(shao),降(jiang)低(di)了(le)不完全燃(ran)燒(shao)(shao)量(liang),空燃(ran)比也趨(qu)于合理。然(ran)而,降(jiang)低(di)排煙(yan)熱(re)損失和回(hui)收(shou)煙(yan)氣余(yu)熱(re)的技術仍(reng)進展不快。為(wei)了(le)進一步(bu)提高(gao)窯(yao)爐的熱(re)效率,達到(dao)節(jie)能(neng)(neng)(neng)降(jiang)耗的目的,回(hui)收(shou)煙(yan)氣余(yu)熱(re)也是一項重要的節(jie)能(neng)(neng)(neng)途徑。