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HCl氣體生產中要控制氫氣過量

返回  打印  發布時間:2013/12/18 點擊:14338

    氯化氫(qing)的制備(bei)方(fang)法中,最常用(yong)的是合成(cheng)法,合成(cheng)法制備(bei)氯化氫(qing)工藝在眾多制備(bei)方(fang)法中技術最為(wei)成(cheng)熟。具體操作步驟流程如下:

    根據氫(qing)(qing)(qing)(qing)氣(qi)與(yu)氯(lv)(lv)(lv)(lv)氣(qi)反應(ying)方程(cheng)式(shi)(shi),兩(liang)者理論是(shi)按照(zhao)1﹕1分(fen)子(zi)比(bi)合成(cheng)的(de),但工業上都是(shi)控(kong)制氫(qing)(qing)(qing)(qing)氣(qi)過(guo)(guo)(guo)量(liang)(liang)的(de)。一般在氯(lv)(lv)(lv)(lv)化氫(qing)(qing)(qing)(qing)合成(cheng)中(zhong)控(kong)制分(fen)子(zi)比(bi)為氫(qing)(qing)(qing)(qing)氣(qi)﹕氯(lv)(lv)(lv)(lv)氣(qi)=(1.05~1.1)。在合成(cheng)鹽酸的(de)合成(cheng)爐中(zhong),氫(qing)(qing)(qing)(qing)氣(qi)過(guo)(guo)(guo)量(liang)(liang)還(huan)多些。氫(qing)(qing)(qing)(qing)氣(qi)過(guo)(guo)(guo)量(liang)(liang)最多不能(neng)超(chao)過(guo)(guo)(guo)10%,不然會(hui)造成(cheng)產(chan)品氯(lv)(lv)(lv)(lv)化氫(qing)(qing)(qing)(qing)純(chun)度下降,乃至影響氯(lv)(lv)(lv)(lv)乙(yi)烯收率。而(er)氫(qing)(qing)(qing)(qing)氣(qi)過(guo)(guo)(guo)量(liang)(liang)超(chao)過(guo)(guo)(guo)20%則有可能(neng)形成(cheng)爆炸混(hun)合物,不利于安全生(sheng)產(chan)。 但如果氯(lv)(lv)(lv)(lv)氣(qi)過(guo)(guo)(guo)量(liang)(liang),則游離(li)氯(lv)(lv)(lv)(lv)易(yi)與(yu)爐壁以及冷卻管等反應(ying)生(sheng)成(cheng)黃色結晶氯(lv)(lv)(lv)(lv)化鐵而(er)腐蝕設備。游離(li)氯(lv)(lv)(lv)(lv)還(huan)將在降膜式(shi)(shi)吸(xi)收塔中(zhong)與(yu)水反應(ying)生(sheng)成(cheng)次氯(lv)(lv)(lv)(lv)酸,對不透(tou)性石墨起緩慢的(de)局部(bu)氧化作用(yong)。即使少量(liang)(liang)的(de)游離(li)氯(lv)(lv)(lv)(lv),也將在氯(lv)(lv)(lv)(lv)乙(yi)烯合成(cheng)的(de)混(hun)合器中(zhong)與(yu)乙(yi)炔發生(sheng)氣(qi)相反應(ying),生(sheng)成(cheng)極易(yi)爆炸的(de)氯(lv)(lv)(lv)(lv)乙(yi)炔,造成(cheng)氯(lv)(lv)(lv)(lv)乙(yi)烯合成(cheng)系統的(de)爆炸。因此,為杜絕氯(lv)(lv)(lv)(lv)化氫(qing)(qing)(qing)(qing)中(zhong)產(chan)生(sheng)游離(li)氯(lv)(lv)(lv)(lv),合成(cheng)反應(ying)中(zhong)嚴格控(kong)制氫(qing)(qing)(qing)(qing)氣(qi)過(guo)(guo)(guo)量(liang)(liang)并(bing)控(kong)制在5—10%,并(bing)隨時注意氯(lv)(lv)(lv)(lv)、氫(qing)(qing)(qing)(qing)流(liu)量(liang)(liang)和視鏡(jing)中(zhong)燃燒(shao)火焰的(de)顏色變化。

    工(gong)藝(yi)流程(cheng):1.氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)合(he)(he)成(cheng)(cheng)工(gong)藝(yi)流程(cheng) 來自氯(lv)(lv)氫(qing)(qing)(qing)(qing)處理工(gong)序的(de)(de)氯(lv)(lv)氣(qi)、氫(qing)(qing)(qing)(qing)氣(qi),經(jing)(jing)(jing)氯(lv)(lv)氣(qi)、氫(qing)(qing)(qing)(qing)氣(qi)緩(huan)(huan)沖(chong)(chong)罐、氫(qing)(qing)(qing)(qing)氣(qi)阻(zu)火器進入二合(he)(he)一(yi)合(he)(he)成(cheng)(cheng)爐內(nei)燃燒,生成(cheng)(cheng)氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)氣(qi)體自爐頂(ding)排出,經(jing)(jing)(jing)空(kong)氣(qi)冷(leng)(leng)卻(que)(que)管、氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)緩(huan)(huan)沖(chong)(chong)罐進入石墨(mo)冷(leng)(leng)卻(que)(que)器,冷(leng)(leng)卻(que)(que)后的(de)(de)氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)送至轉(zhuan)(zhuan)化(hua)(hua)(hua)工(gong)序。 流程(cheng)方(fang)框圖 電解----氫(qing)(qing)(qing)(qing)氣(qi)緩(huan)(huan)沖(chong)(chong)罐-----阻(zu)火器---(電解---氯(lv)(lv)氣(qi)緩(huan)(huan)沖(chong)(chong)罐)合(he)(he)成(cheng)(cheng)爐----空(kong)冷(leng)(leng)管----氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)緩(huan)(huan)沖(chong)(chong)罐---石墨(mo)冷(leng)(leng)---轉(zhuan)(zhuan)化(hua)(hua)(hua)&降膜吸(xi)(xi)(xi)收(shou);2.制酸的(de)(de)工(gong)藝(yi)流程(cheng) 合(he)(he)成(cheng)(cheng)的(de)(de)氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)氣(qi)體從石墨(mo)冷(leng)(leng)卻(que)(que)器出口(kou)經(jing)(jing)(jing)降膜吸(xi)(xi)(xi)收(shou)系統,大(da)部分氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)被(bei)(bei)稀酸吸(xi)(xi)(xi)收(shou),生成(cheng)(cheng)鹽酸儲存(cun)。一(yi)部分未(wei)(wei)吸(xi)(xi)(xi)收(shou)的(de)(de)氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)經(jing)(jing)(jing)尾(wei)(wei)氣(qi)吸(xi)(xi)(xi)收(shou)塔(ta)(ta)吸(xi)(xi)(xi)收(shou)后,下(xia)酸到降膜吸(xi)(xi)(xi)收(shou)塔(ta)(ta),未(wei)(wei)被(bei)(bei)尾(wei)(wei)氣(qi)吸(xi)(xi)(xi)收(shou)塔(ta)(ta)吸(xi)(xi)(xi)收(shou)的(de)(de)氣(qi)體經(jing)(jing)(jing)水(shui)力(li)噴射(she)器回到循環液槽,最后少量(liang)的(de)(de)尾(wei)(wei)氣(qi)氯(lv)(lv)化(hua)(hua)(hua)氫(qing)(qing)(qing)(qing)經(jing)(jing)(jing)堿洗塔(ta)(ta)被(bei)(bei)堿液吸(xi)(xi)(xi)收(shou)。未(wei)(wei)被(bei)(bei)吸(xi)(xi)(xi)收(shou)的(de)(de)尾(wei)(wei)氣(qi)放空(kong)。

    我公(gong)司(si)專(zhuan)業(ye)經(jing)營淄博萬達(da)利特(te)種(zhong)氣體公(gong)司(si)生產(chan)的氯化氫,產(chan)品性能先進,質(zhi)量穩定(ding),處(chu)于國內領先地位,達(da)到國際先進水(shui)平。堅持(chi)“科技領先,質(zhi)量第一”的經(jing)營方針(zhen)。以(yi)(yi)質(zhi)量為(wei)(wei)中心(xin),以(yi)(yi)科技開發和(he)(he)科學管理(li)為(wei)(wei)手段,積極創新,保持(chi)公(gong)司(si)的技術(shu)(shu)研(yan)發活力(li),為(wei)(wei)客戶提供一流的產(chan)品質(zhi)量和(he)(he)技術(shu)(shu)服(fu)務(wu)。

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