茌平電廠煤灰螺旋輸送泵輸灰料封泵-無塵卸料粉料氣力輸送
低壓粉體氣力輸送設備料(liao)(liao)封泵采(cai)(cai)用(yong)(yong)低壓輸(shu)(shu)送(song)(song)(song)，因(yin)此其使用(yong)(yong)范圍受到限制。只有在(zai)(zai)下列條件(jian)下才能(neng)正(zheng)常(chang)、安(an)*地使用(yong)(yong)并達到預期(qi)的(de)(de)(de)(de)效果。輸(shu)(shu)送(song)(song)(song)距離≤500m（等(deng)效距離）。物(wu)料(liao)(liao)比重≤2.0t/m3（粉(fen)狀物(wu)料(liao)(liao)）。大系(xi)(xi)列泵的(de)(de)(de)(de)數量不應(ying)超(chao)過4臺（即4臺泵共用(yong)(yong)一(yi)根輸(shu)(shu)灰管）。物(wu)料(liao)(liao)瞬時zui高(gao)溫(wen)度≤250℃。氣(qi)(qi)(qi)(qi)(qi)(qi)力輸(shu)(shu)送(song)(song)(song)是(shi)工業(ye)上輸(shu)(shu)送(song)(song)(song)粉(fen)狀、顆粒狀物(wu)料(liao)(liao)的(de)(de)(de)(de)一(yi)種簡(jian)單有效的(de)(de)(de)(de)輸(shu)(shu)送(song)(song)(song)方法。輸(shu)(shu)送(song)(song)(song)系(xi)(xi)統通(tong)常(chang)由以下幾部分組(zu)成：（1）壓縮(suo)空氣(qi)(qi)(qi)(qi)(qi)(qi)源，大多(duo)數情況下采(cai)(cai)用(yong)(yong)壓縮(suo)機壓縮(suo)的(de)(de)(de)(de)空氣(qi)(qi)(qi)(qi)(qi)(qi)；(2供料(liao)(liao)設備；(3)輸(shu)(shu)送(song)(song)(song)管道(dao)；(4)接(jie)收倉，用(yong)(yong)于(yu)存放系(xi)(xi)統輸(shu)(shu)送(song)(song)(song)的(de)(de)(de)(de)物(wu)料(liao)(liao)。通(tong)常(chang)系(xi)(xi)統是(shi)一(yi)個閉(bi)環，系(xi)(xi)統內的(de)(de)(de)(de)壓力可以是(shi)高(gao)壓、低壓或(huo)負(fu)壓。對(dui)于(yu)具有特殊性質的(de)(de)(de)(de)物(wu)料(liao)(liao)，采(cai)(cai)用(yong)(yong)不同的(de)(de)(de)(de)輸(shu)(shu)送(song)(song)(song)空氣(qi)(qi)(qi)(qi)(qi)(qi)力。例如，對(dui)于(yu)吸(xi)濕性較強的(de)(de)(de)(de)物(wu)料(liao)(liao)，采(cai)(cai)用(yong)(yong)干燥氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)進行輸(shu)(shu)送(song)(song)(song)；對(dui)于(yu)有潛在(zai)(zai)風險的(de)(de)(de)(de)物(wu)料(liao)(liao)，采(cai)(cai)用(yong)(yong)惰性氣(qi)(qi)(qi)(qi)(qi)(qi)體(ti)進行輸(shu)(shu)送(song)(song)(song)。氣(qi)(qi)(qi)(qi)(qi)(qi)力輸(shu)(shu)送(song)(song)(song)在(zai)(zai)食品、化工、冶金(jin)、新能(neng)源材(cai)料(liao)(liao)等(deng)行業(ye)發揮了不可替代(dai)的(de)(de)(de)(de)作(zuo)用(yong)(yong)。
正(zheng)(zheng)壓(ya)稀(xi)相(xiang)氣(qi)力(li)(li)輸(shu)送系(xi)(xi)(xi)統(tong)(tong)(tong)：它利用(yong)低(di)于(yu)lkg/cm2的(de)氣(qi)體(ti)壓(ya)力(li)(li)，采用(yong)正(zheng)(zheng)壓(ya)（吹氣(qi)式(shi)），將物料(liao)(liao)以高速(su)推或拉(la)通過整(zheng)個輸(shu)送線路，因此這(zhe)種(zhong)輸(shu)送方法(fa)稱為低(di)壓(ya)稀(xi)相(xiang)氣(qi)力(li)(li)輸(shu)送系(xi)(xi)(xi)統(tong)(tong)(tong)。-壓(ya)力(li)(li)高速(su)系(xi)(xi)(xi)統(tong)(tong)(tong)，具有較(jiao)高的(de)氣(qi)料(liao)(liao)比。
稀相輸(shu)送(song)(song)的(de)介質一(yi)般采用(yong)空氣(qi)(qi)或(huo)氮(dan)氣(qi)(qi)，動力(li)一(yi)般由羅(luo)茨(ci)鼓風(feng)(feng)機(ji)(ji)提供。輸(shu)送(song)(song)氮(dan)氣(qi)(qi)時(shi)，由氮(dan)氣(qi)(qi)發生器提供。羅(luo)茨(ci)鼓風(feng)(feng)機(ji)(ji)稀相輸(shu)送(song)(song)時(shi)，物料(liao)在(zai)管(guan)道內(nei)呈懸浮(fu)狀態，輸(shu)送(song)(song)距(ju)離可(ke)達100米。系統初期加速(su)度(du)約為600m/min，末(mo)端高(gao)速(su)可(ke)達2000m/min。因此，氣(qi)(qi)流的(de)速(su)度(du)較高(gao)。輸(shu)送(song)(song)管(guan)道的(de)初始壓(ya)力(li)一(yi)般低于0.05Mpa。末(mo)端基本接近大(da)氣(qi)(qi)壓(ya)。
正壓(ya)(ya)稀相輸送(song)系(xi)統(tong)：適(shi)用于單(dan)點(dian)到單(dan)點(dian)、單(dan)點(dian)到多點(dian)輸送(song)。系(xi)統(tong)特(te)點(dian)：由于系(xi)統(tong)處于正壓(ya)(ya)狀態，因(yin)此密(mi)封要(yao)求非常高(gao)(gao)。如果有漏絲，粉塵(chen)會從供給端(duan)或整個系(xi)統(tong)漏出：系(xi)統(tong)物(wu)料(liao)被吹起(qi)，所以末端(duan)物(wu)料(liao)很容(rong)易從排料(liao)口排出，所以終端(duan)結構比(bi)較簡單(dan)：但輸送(song)溫度較高(gao)(gao)系(xi)統(tong)的工作(zuo)溫度較高(gao)(gao)，一些特(te)殊的熱敏性(xing)材料(liao)必須(xu)進行冷(leng)卻(que)。作(zuo)為動力源，羅茨鼓風機的壓(ya)(ya)力無(wu)法(fa)達(da)到很高(gao)(gao)的水平，因(yin)此輸送(song)距離和產量(liang)不(bu)能同(tong)時取(qu)大值。
