濾餅洗滌的目的主要有3個:
● 通(tong)過(guo)洗滌功能可(ke)進(jin)一(yi)步從回(hui)(hui)收(shou)濾餅中回(hui)(hui)收(shou)有(you)(you)價(jia)值的濾液,提(ti)(ti)高濾液回(hui)(hui)收(shou)率,或(huo)去(qu)除其中有(you)(you)害(hai)成份,提(ti)(ti)高濾液的回(hui)(hui)收(shou)率
● 洗滌濾餅中的液(ye)體雜(za)質,提高濾餅的純凈(jing)度
● 用洗滌液溶去濾餅中(zhong)有(you)價值的成(cheng)分或有(you)害(hai)雜質
壓濾機濾餅的洗滌方式主要有以下幾種:
1、暗流單向(xiang)流滌(di)是,洗液(ye)從止(zhi)推板(ban)(ban)的(de)洗液(ye)進孔(kong)依次進入有孔(kong)板(ban)(ban),穿過(guo)濾布再穿過(guo)濾餅,從無孔(kong)濾板(ban)(ban)流出。
2、暗流雙向(xiang)洗(xi)(xi)滌(di)是(shi)洗(xi)(xi)液從止板上方的兩側(ce)的兩個(ge)洗(xi)(xi)液進孔先后(hou)兩次洗(xi)(xi)滌(di),即洗(xi)(xi)滌(di)先從一側(ce)洗(xi)(xi)滌(di),再從另一側(ce)洗(xi)(xi)滌(di),洗(xi)(xi)液的出口是(shi)對角線方向(xiang),所(suo)以又叫(jiao)暗流雙向(xiang)交叉洗(xi)(xi)滌(di)。
3、明流單向洗(xi)滌是,洗(xi)液(ye)從止推板(ban)的洗(xi)液(ye)進孔(kong)(kong)依次(ci)進入,穿過(guo)濾布(bu)再穿過(guo)濾餅,從無(wu)孔(kong)(kong)濾板(ban)流出(chu),這(zhe)時(shi)有孔(kong)(kong)板(ban)的出(chu)液(ye)水(shui)咀(ju)處于(yu)關(guan)閉狀(zhuang)態,無(wu)孔(kong)(kong)板(ban)的出(chu)液(ye)水(shui)咀(ju)是開啟狀(zhuang)態。
4、明(ming)流雙(shuang)向洗(xi)(xi)滌是,洗(xi)(xi)液從(cong)(cong)止推(tui)板上方的兩(liang)側洗(xi)(xi)液進(jin)孔先(xian)后兩(liang)次洗(xi)(xi)滌,即洗(xi)(xi)液先(xian)從(cong)(cong)一(yi)側洗(xi)(xi)滌再(zai)從(cong)(cong)另一(yi)側洗(xi)(xi)滌,洗(xi)(xi)液的出口同進(jin)口是對角線(xian)方向,所以又叫雙(shuang)向交叉洗(xi)(xi)滌。
濾餅洗滌的目的主要有3個:
● 通過(guo)洗(xi)滌功能可進一(yi)步從回收(shou)濾(lv)餅中(zhong)(zhong)回收(shou)有(you)價值的濾(lv)液(ye),提高(gao)濾(lv)液(ye)回收(shou)率(lv),或去(qu)除其(qi)中(zhong)(zhong)有(you)害成份,提高(gao)濾(lv)液(ye)的回收(shou)率(lv)
● 洗滌(di)濾餅中的(de)(de)液體雜質,提高濾餅的(de)(de)純(chun)凈度(du)
● 用洗滌(di)液溶去濾(lv)餅中有(you)價值的(de)成分或有(you)害(hai)雜質
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