1769-IA16
1769-IA16
產(chǎn)品價格:¥280(人民幣)
  • 規(guī)格:1769-IA16
  • 發(fā)貨地:福州
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  • 最小起訂量:1個
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    會員級別:鉆石會員
    認(rèn)證類型:企業(yè)認(rèn)證
    企業(yè)證件:通過認(rèn)證

    商鋪名稱:福州聚福興自動化有限公司

    聯(lián)系人:陳先生(先生)

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    聯(lián)系地址:倉山

    郵編:350001

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    商品詳情

      1769-IA16現(xiàn)貨 in stock! 歡迎來電咨詢~!!

      1769-IA16


        在現(xiàn)代制藥工業(yè)的生產(chǎn)過程中,不可避免地要使用大量的化學(xué)與生物制劑,這帶來的一個結(jié)果是在生產(chǎn)的每個步驟都會排放出成分復(fù)雜的尾氣,以揮發(fā)性有機(jī)化合物(VOC)居多。如何處理含VOC的尾氣,成為企業(yè)面臨的一大環(huán)保難題。國內(nèi)目前主要采用熱氧化法的處理方式,即蓄熱式熱力焚化爐(英文名為“Regenerative Thermal Oxidizer”,簡稱為“RTO”)
        二、RTO工作原理
        把有機(jī)廢氣加熱到760攝氏度以上,使廢氣中的VOC在氧化分解成二氧化碳和水。廢氣首先通過蓄熱體加熱到接近熱氧化溫度,而后進(jìn)入燃燒室進(jìn)行熱氧化,氧化后的氣體溫度升高,有機(jī)物基本上轉(zhuǎn)化成二氧化碳和水。凈化后的氣體,經(jīng)過另一蓄熱體,溫度下降,達(dá)到排放標(biāo)準(zhǔn)后排放。不同蓄熱體之間通過切換閥,隨時間進(jìn)行轉(zhuǎn)換,分別進(jìn)行吸熱和放熱。氧化產(chǎn)生的高溫氣體流經(jīng)特制的陶瓷蓄熱體,使陶瓷體升溫而“蓄熱”,此“蓄熱”用于預(yù)熱后續(xù)進(jìn)入的有機(jī)廢氣,從而節(jié)省廢氣升溫的燃料消耗。陶瓷蓄熱體應(yīng)分成兩個(含兩個)以上的區(qū)或室,每個蓄熱室依次經(jīng)歷蓄熱-放熱-清掃等程序,周而復(fù)始,連續(xù)工作。蓄熱室“放熱”后應(yīng)立即通過反吹風(fēng)機(jī)對該蓄熱室進(jìn)行清掃(以保證VOC去除率在95%以上),只有待清掃完成后才能進(jìn)入“蓄熱”程序。RTO設(shè)備的工作流程見下圖:
       三、控制要求和方法
        3.1. 燃燒器控制
        氧化室安裝一個帶比例調(diào)節(jié)的天然氣燃燒器。燃燒器的供熱量是用氧化室溫度,經(jīng)過PID調(diào)節(jié)器自動調(diào)節(jié),當(dāng)燃燒器運(yùn)行時,燃燒器PID的SP外給定值(TE05_AM)等于SP外給定值+升溫速率設(shè)定值/120。按照升溫曲線進(jìn)行升溫。否則,SP外給定值等于氧化室溫度。如果SP外給定值超過TE05_S10(氧化室溫度--理想控制溫度設(shè)定),那么TE05_S10直接賦值給TE05_AM(SP外給定值),進(jìn)行溫度限制。此外,燃燒系統(tǒng)還帶有熄火保護(hù)、超溫報警和超溫自動停燃燒器等功能。
      3.2.進(jìn)氣、出氣、清掃流程的切換
        該設(shè)備有三個蓄熱室,一個公共氧化室,有機(jī)廢氣通過鼓風(fēng)機(jī)送入蓄熱室1,吸熱后進(jìn)入氧化室,蓄熱室1因放熱而降溫,燃燒升溫后的氣體進(jìn)入蓄熱室2,通過熱交換把熱量蓄存在蓄熱室2的陶瓷蓄熱體中,處理后的氣體經(jīng)后續(xù)處理合格后煙囪排空。同時蓄熱室3空間中殘留未處理的VOC廢氣被反吹風(fēng)機(jī)吹回氧化室焚化處理。經(jīng)過一段時間(約2分鐘(可設(shè)定))后,氣流改變方向從蓄熱室2進(jìn)入氧化室,通過蓄熱室2吸收熱量升溫后,在氧化室內(nèi)高溫焚化,最后經(jīng)蓄熱室3熱交換后排放,同時蓄熱室1處于清掃狀態(tài),經(jīng)過一段時間(約2分鐘(可設(shè)定))后,氣流再次改變方向,不斷的交替循環(huán),保證氧化室溫度在800℃以上,以此保證高的去除率和換熱效率。程序如下圖:

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