粉煤灰烘干機是煤粉經高溫燃燒后形成的一種似火山灰質混合材料。

它(ta)是燃燒煤的發電廠將煤磨成(cheng)100微(wei)米以下的煤粉(fen)，用預熱空氣噴入爐膛經(jing)燃燒形成(cheng)懸浮狀態，產生混(hun)雜有大量不燃物的高溫煙氣，經(jing)集(ji)塵裝(zhuang)置捕集(ji)就(jiu)得到了粉(fen)煤灰。粉(fen)煤灰的化(hua)(hua)(hua)學組成(cheng)與粘(zhan)土(tu)質(zhi)相似，主要成(cheng)分為二氧(yang)(yang)化(hua)(hua)(hua)硅(gui)、三(san)氧(yang)(yang)化(hua)(hua)(hua)二鋁、三(san)氧(yang)(yang)化(hua)(hua)(hua)二鐵、氧(yang)(yang)化(hua)(hua)(hua)鈣(gai)和未(wei)燃盡碳(tan)。

工作原理(li)

濕粉(fen)煤(mei)(mei)灰由供料(liao)(liao)裝(zhuang)置(zhi)進(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)(de)內層(ceng)(ceng)(ceng)(ceng)(ceng),實(shi)現順(shun)流(liu)烘(hong)(hong)干(gan)(gan), 粉(fen)煤(mei)(mei)灰在內層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抄(chao)板下不斷抄(chao)起(qi)、散(san)落呈螺(luo)旋行(xing)進(jin)(jin)式(shi)實(shi)現熱(re)交(jiao)換(huan)，物(wu)(wu)(wu)(wu)料(liao)(liao)移(yi)動至內層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)另(ling)一端進(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)行(xing)逆流(liu)烘(hong)(hong)干(gan)(gan)，物(wu)(wu)(wu)(wu)料(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)不斷地被(bei)反(fan)復揚(yang)進(jin)(jin)，呈進(jin)(jin)兩步(bu)退一步(bu)的(de)(de)行(xing)進(jin)(jin)方式(shi)，物(wu)(wu)(wu)(wu)料(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)既充分(fen)吸(xi)(xi)收內層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)散(san)發的(de)(de)熱(re)量(liang)，又吸(xi)(xi)收中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)的(de)(de)熱(re)量(liang)，同(tong)時又延長了干(gan)(gan)燥時間(jian)，物(wu)(wu)(wu)(wu)料(liao)(liao)在此達到(dao)干(gan)(gan)燥狀態。物(wu)(wu)(wu)(wu)料(liao)(liao)行(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)另(ling)一端而落入外(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)(wu)(wu)料(liao)(liao)在外(wai)層(ceng)(ceng)(ceng)(ceng)(ceng)滾筒(tong)(tong)內呈矩(ju)形(xing)多回路方式(shi)行(xing)進(jin)(jin)，達到(dao)干(gan)(gan)燥效(xiao)果(guo)(guo)(guo)的(de)(de)物(wu)(wu)(wu)(wu)料(liao)(liao)在熱(re)風(feng)作用下快速行(xing)進(jin)(jin)排出(chu)滾筒(tong)(tong)，沒有(you)達到(dao)干(gan)(gan)燥效(xiao)果(guo)(guo)(guo)的(de)(de)濕物(wu)(wu)(wu)(wu)料(liao)(liao)因(yin)自重而不能快速行(xing)進(jin)(jin)，物(wu)(wu)(wu)(wu)料(liao)(liao)在此矩(ju)形(xing)抄(chao)板內進(jin)(jin)行(xing)充分(fen)干(gan)(gan)燥，由此達到(dao)干(gan)(gan)燥效(xiao)果(guo)(guo)(guo)，完成干(gan)(gan)燥過程。

設備特點

該(gai)設備(bei)與其(qi)他干(gan)燥(zao)設備(bei)相比，生產(chan)(chan)能(neng)力(li)大(da)，可連續操作； 結(jie)構簡單，操作方便(bian)；故(gu)障(zhang)少，維(wei)修費(fei)用低；適用范(fan)圍廣，流體阻(zu)力(li)小，可以用它干(gan)燥(zao)顆料(liao)狀物料(liao)，對于那些附著性大(da)的(de)(de)物料(liao)也很有利；操作彈性大(da)，生產(chan)(chan)上允(yun)許產(chan)(chan)品的(de)(de)流量(liang)有較大(da)波(bo)動范(fan)圍，不會(hui)影(ying)響產(chan)(chan)品的(de)(de)質量(liang)；清(qing)掃容易(yi)。