詳細(xì)介紹
140CPS42400
140CPS42400
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〖廈門光沃自動(dòng)化設(shè)備有限公司 竭誠為您服務(wù)〗
〖:歐工 〗
〖(同號(hào)) 〗
〖: 2479261344 〗
〖
【價(jià)格】如此低價(jià),*
【貨期】大量現(xiàn)貨,下單后即可發(fā)貨
【質(zhì)量】*,進(jìn)口***
【保障】產(chǎn)品經(jīng)過專業(yè)檢測,質(zhì)保一年,15天包退換
【品牌】Allen-Bradley羅克韋爾、ABB、本特利Bently 3500系統(tǒng)卡件、GE、艾默生西屋等模塊卡件
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空氣中的主要成分是氧和氮,它們分別以分子狀態(tài)存在。分子是zui小顆粒,數(shù)目非常多,并且不停地在作無規(guī)則運(yùn)動(dòng),因此,空氣中的氧、氮等分子是均勻地相互攙混在一起的,要將它們分離開是較困難的。目前在工業(yè)上廣泛采用深度冷凍方法分離空氣來制取氧和氮。
先將空氣通過壓縮、膨脹降溫,直至空氣液化(-173℃),再利用氧、氮的氣化溫度不同(在大氣壓下,氧的沸點(diǎn)為-183℃,氮的沸點(diǎn)為-196℃),沸點(diǎn)低的氮相對于氧要容易氣化這個(gè)特性,在精餾塔內(nèi)讓溫度較高的蒸汽與溫度較低的液體不斷相互接觸,液體中的氮較多地蒸發(fā),氣體中的氧較多的冷凝,使上升蒸汽中的含氮量不斷提高,下流液體中的含氧量不斷增大,以此實(shí)現(xiàn)將空氣分離。
空分工藝流程大體可分為空氣壓縮系統(tǒng)、空氣凈化系統(tǒng)、換熱系統(tǒng)、制冷系統(tǒng)、精餾系統(tǒng)、氧氣壓縮輸送系統(tǒng),加溫解凍貯存系統(tǒng)。
一般的空分裝置生產(chǎn)的氧、氮產(chǎn)品來自上塔的低壓氧、氮?dú)怏w,經(jīng)換熱器復(fù)熱后出空分冷箱,壓力約為0.12MPa,然后再由氧氣壓縮機(jī)將它壓縮到所需的壓力(3.1MPa)供給用戶。液氧內(nèi)壓縮流程是從冷凝蒸發(fā)器抽出液氧產(chǎn)品,經(jīng)液氧泵壓縮到所需的壓力(約3.1MPa),再經(jīng)換熱器復(fù)熱、氣化后供給用戶。即它是在冷箱內(nèi)壓縮到所需壓力的,與外壓縮流程相比,存在以下優(yōu)點(diǎn):
1) 不需要氧氣壓縮機(jī),由于將液體壓縮到相同的壓力所消耗的功率比壓縮同樣的氣體要小得多,并且液氧泵體積小,結(jié)構(gòu)簡單,費(fèi)用要比氧氣壓縮機(jī)便宜得多;
2) 液氧壓縮比氣態(tài)壓縮較為安全;
3) 由于不斷有大量液體從主冷設(shè)備中排出,碳?xì)浠衔锊灰自谥骼湓O(shè)備中濃縮,有利于設(shè)備安全運(yùn)轉(zhuǎn);
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MARPOSS 3490097000 NSFP 3490097000
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Marposs 6320460200 Counter Timer Card
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