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全系列型號(hào)SCHNEIDER絕緣監(jiān)測(cè)置IMD-IM20使用方法
全系列型號(hào)SCHNEIDER絕緣監(jiān)測(cè)置IMD-IM20使用方法
且拉西環(huán)填料的內(nèi)表面潤(rùn)濕率較低，因而傳質(zhì)速率也不高。鮑爾環(huán)（Pallring）填料.在拉西環(huán)的基礎(chǔ)上發(fā)展起來的鮑爾環(huán)是在的側(cè)壁上開一層或兩層長(zhǎng)方形小孔，小孔的母材并不脫離側(cè)壁而是形成向內(nèi)彎的葉片。比之拉西環(huán)，鮑爾環(huán)不僅具有較大的生產(chǎn)能力和較低的壓降，且分離效率較高，溝流現(xiàn)象也大大降低。階梯環(huán)填料（Stairring）；階梯環(huán)填料的結(jié)構(gòu)與鮑爾環(huán)填料相似，環(huán)壁上開有長(zhǎng)方形小孔，環(huán)內(nèi)有兩層交錯(cuò)45的十字形葉片，環(huán)的高度為直徑的一半，環(huán)的一端成喇叭口形狀的翻邊。

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為了提高產(chǎn)量干燥機(jī)滾筒做的過長(zhǎng)；直徑做的過大；不能充分利用；造成熱能流失；設(shè)備占地面積大。為了提高產(chǎn)量進(jìn)口溫度過高；出口溫度過高；造成能源浪費(fèi)。同時(shí)也造成了被烘干物料品質(zhì)下降；物料色澤嚴(yán)重變黑；甚至糊料很多。滾筒內(nèi)風(fēng)速過低，造成物料與熱風(fēng)的動(dòng)態(tài)和靜態(tài)接觸力度松弛，從而造成烘干設(shè)備效率低下。只有順流烘干，且干燥過程中飽和的水蒸氣又不能及時(shí)排出，這樣水蒸氣在滾筒內(nèi)運(yùn)行距離過長(zhǎng)，造成水分被干物料重新吸收。