脈沖布袋除塵器的選用

1.過濾速度的選擇:過(guo)(guo)(guo)濾(lv)(lv)(lv)速度(du)(du)是脈沖布袋除塵(chen)(chen)器選型的(de)關鍵因(yin)素(su)(su)，應根據煙塵(chen)(chen)或粉塵(chen)(chen)的(de)性(xing)質、應用場合、粉塵(chen)(chen)粒度(du)(du)、粘(zhan)(zhan)度(du)(du)、氣(qi)體溫(wen)度(du)(du)、含水(shui)份量、含塵(chen)(chen)濃度(du)(du)及不(bu)(bu)同濾(lv)(lv)(lv)料等因(yin)素(su)(su)來確定。 當粉塵(chen)(chen)粒度(du)(du)較細，溫(wen)、濕度(du)(du)較高，濃度(du)(du)大(da)，粘(zhan)(zhan)性(xing)較大(da)宜選低值(zhi)。如≤1m/min;反(fan)之(zhi)可(ke)選高值(zhi)，一(yi)般不(bu)(bu)宜超過(guo)(guo)(guo)1.5m/min。對于粉塵(chen)(chen)粒度(du)(du)很大(da)，常溫(wen)、干燥、無粘(zhan)(zhan)性(xing)，且(qie)濃度(du)(du)極(ji)低，則可(ke)選1.5~2m/min。 過(guo)(guo)(guo)濾(lv)(lv)(lv)速度(du)(du)選用時(shi)，應計算在減(jian)少一(yi)室(清灰時(shi))過(guo)(guo)(guo)濾(lv)(lv)(lv)面積時(shi)的(de)凈(jing)過(guo)(guo)(guo)濾(lv)(lv)(lv)風速不(bu)(bu)宜超過(guo)(guo)(guo)上述數(shu)值(zhi)。

2.過濾材料的選擇 :應根據含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)體的(de)溫(wen)度(du)(du)、含(han)(han)水份(fen)量、酸(suan)、堿(jian)性(xing)質、粉塵(chen)(chen)(chen)的(de)粘度(du)(du)、濃度(du)(du)和磨啄性(xing)等高低(di)、大小(xiao)來(lai)考慮(lv)。 一般在含(han)(han)水量較小(xiao)，無(wu)酸(suan)性(xing)時(shi)根據含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)體溫(wen)度(du)(du)來(lai)選(xuan)用(yong)(yong)(yong)，常(chang)溫(wen)或(huo)(huo)≤130°C時(shi)，常(chang)用(yong)(yong)(yong)500~550g/m2的(de)滌綸(lun)針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan)。<250°C時(shi)，選(xuan)用(yong)(yong)(yong)芳綸(lun)諾梅克斯(si)針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan)或(huo)(huo)800g/m2玻纖針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan)或(huo)(huo)800g/m2緯雙(shuang)重玻纖織物(wu)或(huo)(huo)氟美斯(si)[FMS]高溫(wen)濾(lv)料(含(han)(han)氟氣(qi)(qi)體不(bu)能用(yong)(yong)(yong)玻纖材質)。 當(dang)含(han)(han)水份(fen)量較大，粉塵(chen)(chen)(chen)濃度(du)(du)又(you)較大時(shi)，宜選(xuan)用(yong)(yong)(yong)防(fang)(fang)(fang)水、防(fang)(fang)(fang)油濾(lv)料(或(huo)(huo)稱抗(kang)結露濾(lv)料)或(huo)(huo)覆膜濾(lv)料(基布應是經過防(fang)(fang)(fang)水處理的(de)針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan))。當(dang)含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)體含(han)(han)酸(suan)、堿(jian)性(xing)且(qie)氣(qi)(qi)體溫(wen)度(du)(du)≤190°C，常(chang)選(xuan)用(yong)(yong)(yong)萊通(Ryton聚苯硫醚)針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan)。氣(qi)(qi)體溫(wen)度(du)(du)≤240°C，耐(nai)酸(suan)堿(jian)性(xing)要求不(bu)太高時(shi)，選(xuan)用(yong)(yong)(yong)P84(聚酰亞(ya)胺)針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan)。 當(dang)含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)體為(wei)易(yi)燃(ran)易(yi)爆氣(qi)(qi)體時(shi)，選(xuan)用(yong)(yong)(yong)防(fang)(fang)(fang)靜電(dian)(dian)絳(jiang)綸(lun)針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan)，當(dang)含(han)(han)塵(chen)(chen)(chen)氣(qi)(qi)體既有一定的(de)水份(fen)又(you)為(wei)易(yi)燃(ran)易(yi)爆氣(qi)(qi)體時(shi)，選(xuan)用(yong)(yong)(yong)防(fang)(fang)(fang)水防(fang)(fang)(fang)油防(fang)(fang)(fang)靜電(dian)(dian)(三(san)防(fang)(fang)(fang))絳(jiang)綸(lun)針(zhen)(zhen)刺(ci)(ci)(ci)氈(zhan)(zhan)。

3.控制儀的選擇:脈(mo)沖布袋除(chu)塵(chen)(chen)器(qi)清(qing)灰(hui)控(kong)(kong)(kong)(kong)(kong)制采用(yong)(yong)(yong)PLC微電腦程控(kong)(kong)(kong)(kong)(kong)儀，分(fen)定(ding)(ding)(ding)壓(ya)(自(zi)動(dong))、定(ding)(ding)(ding)時(shi)(自(zi)動(dong))，手動(dong)三種(zhong)控(kong)(kong)(kong)(kong)(kong)制方式。 定(ding)(ding)(ding)壓(ya)控(kong)(kong)(kong)(kong)(kong)制:按設定(ding)(ding)(ding)壓(ya)差(cha)進行控(kong)(kong)(kong)(kong)(kong)制，除(chu)塵(chen)(chen)器(qi)壓(ya)差(cha)超過設定(ding)(ding)(ding)值，各(ge)(ge)室自(zi)動(dong)依(yi)(yi)次清(qing)灰(hui)一遍(bian)。 定(ding)(ding)(ding)時(shi)控(kong)(kong)(kong)(kong)(kong)制:按設定(ding)(ding)(ding)時(shi)間，每隔(ge)一個(ge)清(qing)灰(hui)周(zhou)期(qi)，各(ge)(ge)室依(yi)(yi)次清(qing)灰(hui)一遍(bian)。 手動(dong)控(kong)(kong)(kong)(kong)(kong)制:在現場操作柜(ju)上可(ke)手動(dong)控(kong)(kong)(kong)(kong)(kong)制依(yi)(yi)次各(ge)(ge)室自(zi)動(dong)清(qing)灰(hui)一遍(bian)，也可(ke)對每個(ge)室單獨清(qing)灰(hui)。 由用(yong)(yong)(yong)戶選定(ding)(ding)(ding)控(kong)(kong)(kong)(kong)(kong)制方式，用(yong)(yong)(yong)戶無要求時(shi)，則按定(ding)(ding)(ding)時(shi)控(kong)(kong)(kong)(kong)(kong)制供(gong)貨。