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聚酰胺和(he)聚合氯(lv)化鋁(lv)的區別
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一、化學性質不同。
根據化學性質區(qu)分,聚(ju)(ju)(ju)酰胺是一種(zhong)有機(ji)高(gao)分子聚(ju)(ju)(ju)合(he)物(wu)(wu);聚(ju)(ju)(ju)合(he)氯化鋁是一種(zhong)無機(ji)高(gao)分子聚(ju)(ju)(ju)合(he)物(wu)(wu)。
二、外觀不同。
聚酰胺無論是(shi)(shi)陰離(li)子(zi)還(huan)是(shi)(shi)陽離(li)子(zi)還(huan)是(shi)(shi)非離(li)子(zi),無論是(shi)(shi)固體還(huan)是(shi)(shi)液體,外觀都是(shi)(shi)白(bai)色的干粉或乳液;聚合氯化鋁(lv)根據含量(liang)的高(gao)低呈現為褐(he)色、淺褐(he)色、黃色,鋁(lv)含量(liang)越(yue)高(gao),顏色越(yue)淺。
三、作用機理不同。
聚(ju)合氯化鋁作(zuo)(zuo)為水處理藥劑,主(zhu)要是利(li)用(yong)(yong)的(de)電(dian)中和作(zuo)(zuo)用(yong)(yong)將廢水中的(de)小(xiao)顆粒(li)懸浮物混凝(ning)到一起,壓縮擴散層而(er)使膠(jiao)體脫穩;聚(ju)酰胺(an)主(zhu)要是利(li)用(yong)(yong)它的(de)吸附架橋特性形(xing)成更大更緊密(mi)的(de)絮凝(ning)團(tuan),使絮凝(ning)團(tuan)沉淀或上浮。
四、添加順序不同。
聚(ju)(ju)合氯(lv)化鋁(lv)(lv)和聚(ju)(ju)酰(xian)(xian)胺經常出現在同一污(wu)水(shui)(shui)(shui)處理工(gong)藝流程中,他們(men)添加(jia)(jia)(jia)的(de)時(shi)期是不(bu)一樣的(de),也就是說不(bu)能混合添加(jia)(jia)(jia);當廢水(shui)(shui)(shui)或(huo)污(wu)水(shui)(shui)(shui)的(de)污(wu)濁度比較低(di)時(shi)或(huo)處理的(de)廢水(shui)(shui)(shui)中懸浮物(wu)或(huo)雜質粒徑(jing)在50μm以下的(de)時(shi)候,我們(men)應(ying)先(xian)添加(jia)(jia)(jia)聚(ju)(ju)合氯(lv)化鋁(lv)(lv),過30秒(miao)左右(you)再添加(jia)(jia)(jia)聚(ju)(ju)酰(xian)(xian)胺助凝;反之,則先(xian)添加(jia)(jia)(jia)聚(ju)(ju)酰(xian)(xian)胺,再添加(jia)(jia)(jia)聚(ju)(ju)合氯(lv)化鋁(lv)(lv)。
五、保存時間不同。
在干(gan)燥通(tong)風密封條件下,聚酰胺干(gan)粉的保(bao)(bao)(bao)存時間在2年(nian),乳液保(bao)(bao)(bao)存期為6個(ge)月;聚合氯化鋁(lv)保(bao)(bao)(bao)存時間為1年(nian)。
聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)的(de)(de)合(he)(he)(he)(he)(he)成(cheng)方(fang)法(fa)(fa)(fa)(fa)(fa)(fa)有(you)很(hen)多(duo)種(zhong),按(an)照原(yuan)材料(liao)的(de)(de)不(bu)同,可分(fen)為金(jin)屬鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)、活性氫(qing)(qing)(qing)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)、三氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)二(er)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)、氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)、堿(jian)(jian)(jian)溶(rong)(rong)法(fa)(fa)(fa)(fa)(fa)(fa)等(deng)。① 金(jin)屬鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)。采用(yong)金(jin)屬鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)合(he)(he)(he)(he)(he)成(cheng)聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)的(de)(de)原(yuan)料(liao)主要為鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)加(jia)(jia)工(gong)(gong)(gong)的(de)(de)下(xia)腳(jiao)料(liao),如(ru)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)屑、鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)灰和(he)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)渣等(deng)。由鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)灰按(an)一(yi)定配(pei)比(bi)在(zai)攪拌下(xia)緩慢加(jia)(jia)入鹽(yan)酸進行(xing)反應(ying),經熟化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)聚合(he)(he)(he)(he)(he)、沉降制(zhi)(zhi)(zhi)(zhi)得(de)(de)液(ye)(ye)(ye)體聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv),再經稀釋過(guo)濾,濃縮(suo),干(gan)燥制(zhi)(zhi)(zhi)(zhi)得(de)(de)。在(zai)工(gong)(gong)(gong)藝(yi)上可分(fen)為酸法(fa)(fa)(fa)(fa)(fa)(fa)、堿(jian)(jian)(jian)法(fa)(fa)(fa)(fa)(fa)(fa)、中和(he)法(fa)(fa)(fa)(fa)(fa)(fa)3種(zhong)。酸法(fa)(fa)(fa)(fa)(fa)(fa)主要是(shi)用(yong)HCl,產(chan)(chan)品(pin)質量(liang)不(bu)易控(kong)制(zhi)(zhi)(zhi)(zhi);堿(jian)(jian)(jian)法(fa)(fa)(fa)(fa)(fa)(fa)生產(chan)(chan)工(gong)(gong)(gong)藝(yi)難(nan)度較(jiao)(jiao)高(gao)(gao),設備(bei)投資較(jiao)(jiao)大(da)且用(yong)堿(jian)(jian)(jian)量(liang)大(da),pH值(zhi)控(kong)制(zhi)(zhi)(zhi)(zhi)費原(yuan)料(liao),成(cheng)本(ben)(ben)較(jiao)(jiao)高(gao)(gao);用(yong)的(de)(de)較(jiao)(jiao)多(duo)的(de)(de)是(shi)中和(he)法(fa)(fa)(fa)(fa)(fa)(fa),只要控(kong)制(zhi)(zhi)(zhi)(zhi)好配(pei)比(bi),一(yi)般(ban)都能達到(dao)。② 氫(qing)(qing)(qing)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)。氫(qing)(qing)(qing)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)粉純度比(bi)較(jiao)(jiao)高(gao)(gao),合(he)(he)(he)(he)(he)成(cheng)的(de)(de)聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)重金(jin)屬等(deng)有(you)毒(du)物質含(han)量(liang)低(di),一(yi)般(ban)采用(yong)加(jia)(jia)熱(re)加(jia)(jia)壓酸溶(rong)(rong)的(de)(de)生產(chan)(chan)工(gong)(gong)(gong)藝(yi)。這(zhe)(zhe)(zhe)種(zhong)工(gong)(gong)(gong)藝(yi)比(bi)較(jiao)(jiao)簡單,但生產(chan)(chan)的(de)(de)聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)的(de)(de)鹽(yan)基度較(jiao)(jiao)低(di),因此一(yi)般(ban)采用(yong)氫(qing)(qing)(qing)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)加(jia)(jia)溫加(jia)(jia)壓酸溶(rong)(rong)再加(jia)(jia)上鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)酸鈣(gai)礦粉中和(he)兩(liang)道工(gong)(gong)(gong)序。③ 三氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)。含(han)三氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)二(er)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)的(de)(de)原(yuan)料(liao)主要有(you)三水鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)石(shi)、鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)釩(fan)土(tu)、高(gao)(gao)嶺土(tu)、煤(mei)矸石(shi)等(deng)。該生產(chan)(chan)工(gong)(gong)(gong)藝(yi)可分(fen)為兩(liang)步(bu)(bu):一(yi)步(bu)(bu)是(shi)得(de)(de)到(dao)結晶氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv),第(di)二(er)步(bu)(bu)是(shi)通(tong)過(guo)熱(re)解法(fa)(fa)(fa)(fa)(fa)(fa)或中和(he)法(fa)(fa)(fa)(fa)(fa)(fa)得(de)(de)到(dao)聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)。④ 氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)法(fa)(fa)(fa)(fa)(fa)(fa)。采用(yong)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)粉為原(yuan)料(liao),加(jia)(jia)工(gong)(gong)(gong)聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)。這(zhe)(zhe)(zhe)種(zhong)方(fang)法(fa)(fa)(fa)(fa)(fa)(fa)應(ying)用(yong)為普遍。可用(yong)結晶氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)于170℃進行(xing)沸(fei)騰熱(re)解,加(jia)(jia)水熟化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)聚合(he)(he)(he)(he)(he),再經固化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)、干(gan)燥制(zhi)(zhi)(zhi)(zhi)得(de)(de)。⑤ 堿(jian)(jian)(jian)溶(rong)(rong)法(fa)(fa)(fa)(fa)(fa)(fa)。先將鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)灰與氫(qing)(qing)(qing)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)納反應(ying)得(de)(de)到(dao)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)酸鈉溶(rong)(rong)液(ye)(ye)(ye),再用(yong)鹽(yan)酸調(diao)pH值(zhi),制(zhi)(zhi)(zhi)(zhi)得(de)(de)聚合(he)(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)溶(rong)(rong)液(ye)(ye)(ye)。這(zhe)(zhe)(zhe)種(zhong)方(fang)法(fa)(fa)(fa)(fa)(fa)(fa)制(zhi)(zhi)(zhi)(zhi)得(de)(de)的(de)(de)產(chan)(chan)品(pin)顏色外(wai)觀較(jiao)(jiao)好,不(bu)溶(rong)(rong)物較(jiao)(jiao)少,但氯(lv)(lv)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鈉含(han)量(liang)高(gao)(gao),原(yuan)材料(liao)消耗高(gao)(gao),溶(rong)(rong)液(ye)(ye)(ye)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)鋁(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)(lv)含(han)量(liang)低(di),工(gong)(gong)(gong)業(ye)化(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)(hua)生產(chan)(chan)成(cheng)本(ben)(ben)較(jiao)(jiao)大(da)。
想要了解更多信息,歡迎撥打圖片中的熱線電話。聚合(he)氯化鋁pH的測定方(fang)法
試劑和材料
pH=4.00的ben二甲酸氫鉀(GB6857)pH值標準溶液;
pH=9.18的四硼酸鈉(GB6856)pH值標準溶(rong)液(ye);儀器、設備
酸度計:精度0.1pH;
玻璃電極;
甘gong電極。分析步驟
稱取1.0g試(shi)樣,準確至(zhi)0.01g。用水溶(rong)解(jie)后,全部轉移到(dao)100mL容量(liang)瓶中(zhong),稀釋至(zhi)刻度,搖勻。
用pH4.00及pH9.18的標準溶液(ye)進行酸度(du)計定位。再將試樣溶液(ye)倒入燒杯,工業聚氯化(hua)鋁哪(na)家好,將甘gong電(dian)極(ji)和玻璃電(dian)極(ji)浸入被測(ce)溶液(ye)中(zhong),測(ce)其(qi)pH值(1min 內pH值的變化(hua)不大(da)于0.1)。
想要了解更多(duo)信息,歡迎撥打圖片(pian)中的熱線電話。
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