三(san)效外循環(huan)蒸(zheng)發(fa)(fa)器(qi)主(zhu)要(yao)控(kong)(kong)(kong)制(zhi)(zhi)是產品濃(nong)度控(kong)(kong)(kong)制(zhi)(zhi)、溫(wen)(wen)度控(kong)(kong)(kong)制(zhi)(zhi)和溫(wen)(wen)差控(kong)(kong)(kong)制(zhi)(zhi)。廢(fei)(fei)水(shui)蒸(zheng)發(fa)(fa)器(qi)的(de)輔助控(kong)(kong)(kong)制(zhi)(zhi)包括加熱蒸(zheng)汽控(kong)(kong)(kong)制(zhi)(zhi)、廢(fei)(fei)水(shui)蒸(zheng)發(fa)(fa)器(qi)液(ye)(ye)位(wei)控(kong)(kong)(kong)制(zhi)(zhi)、真空度控(kong)(kong)(kong)制(zhi)(zhi)、冷凝液(ye)(ye)排(pai)放控(kong)(kong)(kong)制(zhi)(zhi)等。廢(fei)(fei)水(shui)蒸(zheng)發(fa)(fa)器(qi)加熱蒸(zheng)汽壓(ya)(ya)力或流(liu)(liu)it波動較大時，采(cai)用加熱蒸(zheng)汽的(de)壓(ya)(ya)力或流(liu)(liu)量控(kong)(kong)(kong)制(zhi)(zhi)，穩(wen)定加熱量。廢(fei)(fei)水(shui)蒸(zheng)發(fa)(fa)器(qi)液(ye)(ye)位(wei)控(kong)(kong)(kong)制(zhi)(zhi)用于保(bao)證一定的(de)蒸(zheng)發(fa)(fa)空間。液(ye)(ye)位(wei)檢測(ce)儀表應(ying)考慮兩(liang)端測(ce)壓(ya)(ya)，防止汽泡造成(cheng)的(de)虛假(jia)液(ye)(ye)位(wei)。