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煤氣發生爐煤氣產生泄漏的原因,應如何防漏?

2022/10/28 10:01:41點擊:

煤(mei)(mei)氣發生(sheng)(sheng)爐(lu)是我們生(sheng)(sheng)產中最重要(yao)的(de)生(sheng)(sheng)產設備,其在使用過(guo)程中,煤(mei)(mei)氣的(de)壓力控制參數(shu)是生(sheng)(sheng)產過(guo)程的(de)重要(yao)參數(shu),如(ru)果煤(mei)(mei)氣的(de)壓力控制偏高,將造成(cheng)煤(mei)(mei)氣從(cong)爐(lu)內(nei)向外竄漏,但是如(ru)果煤(mei)(mei)氣的(de)壓力控制偏低,又會(hui)造成(cheng)空(kong)氣由爐(lu)外向爐(lu)內(nei)竄漏,降(jiang)低煤(mei)(mei)氣的(de)質(zhi)量。 

1、煤氣泄漏的檢測

檢(jian)(jian)(jian)(jian)測(ce)煤(mei)(mei)氣(qi)泄漏情況(kuang)常用工(gong)具(ju)---靈(ling)敏的(de)(de)壓力計、煤(mei)(mei)氣(qi)檢(jian)(jian)(jian)(jian)測(ce)器和檢(jian)(jian)(jian)(jian)漏液。一般情況(kuang)下(xia),檢(jian)(jian)(jian)(jian)漏器對檢(jian)(jian)(jian)(jian)漏液是很敏感的(de)(de),檢(jian)(jian)(jian)(jian)修時,應先(xian)使(shi)用檢(jian)(jian)(jian)(jian)漏器,再使(shi)用檢(jian)(jian)(jian)(jian)漏液,檢(jian)(jian)(jian)(jian)測(ce)時必(bi)須關閉所有的(de)(de)標志燈。進入泄漏區域(yu)時,應通知聯絡中心已經到達可(ke)能(neng)泄漏區域(yu),在進入之前,準(zhun)備好煤(mei)(mei)氣(qi)檢(jian)(jian)(jian)(jian)測(ce)裝置;務必(bi)與聯絡中心保(bao)持通信,通報緊(jin)急情況(kuang)。做好文件(jian)記錄(lu),任何泄漏檢(jian)(jian)(jian)(jian)查工(gong)作(zuo)完成后,工(gong)作(zuo)人員都要全(quan)面地(di)記錄(lu)檢(jian)(jian)(jian)(jian)測(ce)過程。

2、煤氣泄漏防漏措施

過去在(zai)(zai)煤(mei)氣(qi)(qi)(qi)(qi)生(sheng)產(chan)中(zhong)進行(xing)原(yuan)始的操作(zuo),使(shi)焦爐(lu)里的煤(mei)氣(qi)(qi)(qi)(qi)壓(ya)力(li)一般控(kong)制在(zai)(zai)50~80Pa,造成煤(mei)氣(qi)(qi)(qi)(qi)的大量(liang)泄漏(lou),而且(qie)難(nan)以(yi)保(bao)證煤(mei)氣(qi)(qi)(qi)(qi)中(zhong)的含(han)氧量(liang)小于(yu)1%,主(zhu)要原(yuan)因是控(kong)制調節系(xi)統(tong)(tong)受(shou)到(dao)現場(chang)的干(gan)擾(rao)因素太(tai)多,使(shi)調節系(xi)統(tong)(tong)難(nan)以(yi)達到(dao)實(shi)現0±10Pa微壓(ya)自(zi)動(dong)控(kong)制的目標。20世紀90年(nian)代以(yi)來,普(pu)遍使(shi)用(yong)PLC控(kong)制、集散控(kong)制等方法對煤(mei)氣(qi)(qi)(qi)(qi)發生(sheng)爐(lu)進行(xing)控(kong)制,在(zai)(zai)兩段(duan)爐(lu)中(zhong)采用(yong)發生(sheng)爐(lu)煤(mei)氣(qi)(qi)(qi)(qi)壓(ya)力(li)二級調節控(kong)制系(xi)統(tong)(tong)(系(xi)統(tong)(tong)框圖(tu)見(jian)圖(tu)2所示),在(zai)(zai)系(xi)統(tong)(tong)控(kong)制參(can)數整定好后(hou),爐(lu)面(mian)可實(shi)現0±10Pa高(gao)性能的壓(ya)力(li)自(zi)動(dong)控(kong)制,有效杜絕了煤(mei)氣(qi)(qi)(qi)(qi)外泄,而且(qie)還能確保(bao)煤(mei)氣(qi)(qi)(qi)(qi)的含(han)氧量(liang)小于(yu)1%。