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產(chǎn)品簡(jiǎn)介
6ES7392-1AM00-0AA0
產(chǎn)品價(jià)格:¥1.00元/個(gè)
上架日期:2019-09-03
發(fā)貨地:福建 福州市
供應(yīng)數(shù)量:不限
最少起訂:1個(gè)
瀏覽量:181
詳細(xì)說明
    詳細(xì)參數(shù)
    品牌西門子型號(hào)SIEMENSPLC模塊
    結(jié)構(gòu)形式模塊式安裝方式現(xiàn)場(chǎng)安裝
    LD指令處理器硬PLC功能輸入輸出
    工作電壓24VDC輸出頻率50,60HZ
    處理速度0.001產(chǎn)品認(rèn)證UL
    環(huán)境溫度-10,60加工定制
    重量0.5KG產(chǎn)地USA

    6ES7392-1AM00-0AA0現(xiàn)貨 in stock! 歡迎來電咨詢~?。?

    6ES7392-1AM00-0AA0


      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(gè)結(jié)果是在生產(chǎn)的每個(gè)步驟都會(huì)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(jiǎn)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(shí)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(gè)(含兩個(gè))以上的區(qū)或室,每個(gè)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(duì)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(gè)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(dòng)調(diào)節(jié),當(dāng)燃燒器運(yùn)行時(shí),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(bào)警和超溫自動(dòng)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(gè)蓄熱室,一個(gè)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(shí)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(shí)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(shí)蓄熱室1處于清掃狀態(tài),經(jīng)過一段時(shí)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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