一、濕式靜電除塵器工藝及技術要求

　　從整體上而言，新(xin)改造的(de)煙氣(qi)脫(tuo)硫(liu)裝(zhuang)置(zhi)和普(pu)通裝(zhuang)置(zhi)較(jiao)大的(de)不同在于，前者含有立(li)式靜電除塵器系統(tong)，這(zhe)個系統(tong)可以將煙塵中(zhong)含有的(de)煙塵或(huo)者霧滴脫(tuo)離出(chu)來，這(zhe)樣排放到空氣(qi)中(zhong)的(de)煙塵不會形(xing)成(cheng)“石膏雨”。

濕除原理和工藝簡介

1應用原理

濕(shi)除原(yuan)理和十式靜電(dian)(dian)除塵原(yuan)理差不多，在(zai)(zai)高(gao)壓電(dian)(dian)場(chang)的(de)(de)(de)(de)作用(yong)下，電(dian)(dian)暈(yun)極(ji)和沉(chen)淀極(ji)之間(jian)形成(cheng)直流電(dian)(dian)壓，直流電(dian)(dian)壓和和氣(qi)體接觸形成(cheng)電(dian)(dian)離(li)(li)(li)(li)，空氣(qi)中便會(hui)(hui)(hui)產生大量正離(li)(li)(li)(li)子(zi)(zi)和自(zi)(zi)由電(dian)(dian)子(zi)(zi)，其中電(dian)(dian)暈(yun)極(ji)之外的(de)(de)(de)(de)自(zi)(zi)由粒(li)子(zi)(zi)和氣(qi)體分子(zi)(zi)一日_接觸，負離(li)(li)(li)(li)子(zi)(zi)便會(hui)(hui)(hui)形成(cheng)，負離(li)(li)(li)(li)子(zi)(zi)因為電(dian)(dian)場(chang)力(li)(li)的(de)(de)(de)(de)作用(yong)開始接近沉(chen)淀極(ji)，整個電(dian)(dian)廠中便存在(zai)(zai)足夠(gou)多的(de)(de)(de)(de)負離(li)(li)(li)(li)子(zi)(zi)，將(jiang)煙(yan)氣(qi)中的(de)(de)(de)(de)物質，比如顆(ke)粒(li)和霧滴等(deng)脫離(li)(li)(li)(li)出來，凈化之后的(de)(de)(de)(de)煙(yan)氣(qi)被排到大氣(qi)中去，霧滴或者小(xiao)顆(ke)粒(li)會(hui)(hui)(hui)落在(zai)(zai)沉(chen)淀極(ji)，有的(de)(de)(de)(de)會(hui)(hui)(hui)因為重力(li)(li)的(de)(de)(de)(de)作用(yong)自(zi)(zi)己掉落，無(wu)法移動的(de)(de)(de)(de)小(xiao)顆(ke)粒(li)或者霧滴，需要人工方(fang)式進行沖刷。

2工藝流程(cheng)和系統簡介

2.1工藝流程簡介

改造后的工程中，將立式濕式靜電除塵器安置在(zai)脫(tuo)硫塔上面，煙(yan)氣經(jing)過脫(tuo)硫之后經(jing)過人口均流板然后進入(ru)電廠，濕式靜(jing)電除塵(chen)器(qi)在(zai)電廠中(zhong)進行系統煙(yan)氣的(de)處理，塵(chen)土經(jing)過處理后，達到排(pai)放(fang)標準的(de)煙(yan)塵(chen)排(pai)出去，沉淀極(ji)中(zhong)的(de)顆粒與霧滴有些是在(zai)重(zhong)力的(de)作(zuo)(zuo)用(yong)下，從沉淀極(ji)表面慢(man)(man)慢(man)(man)流人脫(tuo)硫吸(xi)收(shou)塔中(zhong)，另一部分因為沒法流動(dong)，會在(zai)人工沖洗的(de)作(zuo)(zuo)用(yong)下被沖到脫(tuo)硫吸(xi)收(shou)塔中(zhong)。

2.2工藝系統簡介

沉淀極(ji)系(xi)(xi)統(tong)、熱風系(xi)(xi)統(tong)、電暈極(ji)系(xi)(xi)統(tong)、沖洗水系(xi)(xi)統(tong)和供電電源系(xi)(xi)統(tong)是濕除的主要系(xi)(xi)統(tong)。

電(dian)(dian)暈(yun)極系統中(zhong)，主要構成(cheng)器件包括(kuo)支(zhi)(zhi)梁(liang)、上(shang)(shang)下(xia)(xia)吊(diao)掛大梁(liang)、吊(diao)桿、電(dian)(dian)源(yuan)線和(he)支(zhi)(zhi)撐絕緣套(tao)管。在具體(ti)的設(she)計中(zhong)支(zhi)(zhi)撐絕緣體(ti)套(tao)管將電(dian)(dian)暈(yun)機上(shang)(shang)下(xia)(xia)打量(liang)固(gu)定在濕(shi)除(chu)外殼體(ti)上(shang)(shang)，在支(zhi)(zhi)梁(liang)上(shang)(shang)，電(dian)(dian)暈(yun)線被成(cheng)功(gong)掛在大梁(liang)中(zhong)。電(dian)(dian)源(yuan)線選擇穿(chuan)刺方式(shi)。因(yin)為(wei)經過脫(tuo)硫(liu)之后(hou)的煙氣(qi)pH值非常低，所以(yi)在設(she)計上(shang)(shang)下(xia)(xia)大梁(liang)和(he)外殼體(ti)內壁的時候要進行處理，所選擇的電(dian)(dian)暈(yun)線、吊(diao)桿和(he)支(zhi)(zhi)梁(liang)等的材料是合金鋼材。

接地與極(ji)板(ban)構成沉淀極(ji)系統。其中極(ji)板(ban)選擇的導電(dian)玻璃鋼材料，經過加工(gong)制作成外(wai)表(biao)類似蜂窩的樣式，極(ji)板(ban)內壁存在六個(ge)面(mian)，形成沉淀極(ji)板(ban)，經過處理后煙(yan)塵中的小顆(ke)粒和霧滴等便會在這上面(mian)聚集(ji)。

風(feng)(feng)機、加熱器和保溫箱構成熱風(feng)(feng)系(xi)(xi)統(tong)。脫硫(liu)處理之后的(de)煙氣(qi)(qi)比較濕，為了供電系(xi)(xi)統(tong)的(de)正常(chang)工(gong)作，還需要給陰(yin)極接線保溫箱中輸送足夠多的(de)十燥空氣(qi)(qi)，這樣做(zuo)不僅可以其系(xi)(xi)統(tong)中的(de)絕緣(yuan)性能，也可以防(fang)止系(xi)(xi)統(tong)被濕煙氣(qi)(qi)所腐(fu)蝕(shi)。

供電開關和高壓(ya)控制柜(ju)、隔離開關以及變壓(ya)器構成供電電源(yuan)系統(tong)，該系統(tong)的(de)主要(yao)作用是為濕(shi)除提供足夠的(de)直流電。

沖洗水(shui)泵、管道、沖洗噴(pen)嘴構成沖洗水(shui)系統。其中電(dian)暈極(ji)和沉淀(dian)(dian)極(ji)較(jiao)上面是沖洗噴(pen)嘴，布置樣式比較(jiao)均(jun)勻，工作人(ren)員會定期(qi)和不定期(qi)的將(jiang)電(dian)暈極(ji)線(xian)上的顆粒(li)(li)和沉淀(dian)(dian)極(ji)上的顆粒(li)(li)霧(wu)沖洗掉，清(qing)潔電(dian)暈極(ji)線(xian)和沉淀(dian)(dian)極(ji)外(wai)表(biao)。

　　二、提高(gao)微(wei)細(xi)顆粒的脫除效率

　　微細(xi)顆(ke)(ke)(ke)粒(li)(li)物質量(liang)輕、粒(li)(li)徑小(xiao)(xiao)、流動跟(gen)隨性(xing)好、吸附(fu)性(xing)強且較(jiao)難脫除(chu)，是(shi)造成(cheng)大氣(qi)(qi)(qi)能見(jian)度(du)降(jiang)低、灰(hui)霾天氣(qi)(qi)(qi)、酸雨、氣(qi)(qi)(qi)候變化等重大問(wen)題的(de)重要因(yin)素，由其(qi)引發的(de)污(wu)染(ran)已成(cheng)為我(wo)國(guo)突出的(de)大氣(qi)(qi)(qi)環(huan)境問(wen)題，而(er)燃(ran)煤(mei)電(dian)廠是(shi)引起我(wo)國(guo)大氣(qi)(qi)(qi)環(huan)境中微細(xi)顆(ke)(ke)(ke)粒(li)(li)物濃(nong)度(du)增加(jia)的(de)重要污(wu)染(ran)源之(zhi)一。干式靜(jing)電(dian)除(chu)塵(chen)(chen)器(DESP)具率(lv)(lv)(lv)高、能耗(hao)低、煙氣(qi)(qi)(qi)處理量(liang)大等優點，目(mu)(mu)前(qian)我(wo)國(guo)有(you)90%~的(de)燃(ran)煤(mei)電(dian)廠采(cai)用(yong)DESP對燃(ran)煤(mei)煙氣(qi)(qi)(qi)進(jin)行除(chu)塵(chen)(chen)處理，但(dan)(dan)由于微細(xi)顆(ke)(ke)(ke)粒(li)(li)(粒(li)(li)徑小(xiao)(xiao)于10μm)荷電(dian)效果差，電(dian)遷移率(lv)(lv)(lv)低，其(qi)脫除(chu)效率(lv)(lv)(lv)并(bing)不理想，通常不超過(guo)90%；此外，DESP靠振(zhen)打(da)清灰(hui)，易出現二次揚塵(chen)(chen)及反電(dian)暈現象，也降(jiang)低了對細(xi)顆(ke)(ke)(ke)粒(li)(li)物脫除(chu)效率(lv)(lv)(lv)。目(mu)(mu)前(qian)工業多采(cai)取(qu)增加(jia)電(dian)場數、增加(jia)除(chu)塵(chen)(chen)器的(de)寬(kuan)度(du)和增加(jia)除(chu)塵(chen)(chen)器的(de)高度(du)等手(shou)段來增加(jia)收塵(chen)(chen)面積，從(cong)而(er)提高濕式靜(jing)電(dian)除(chu)塵(chen)(chen)器配件的(de)脫除(chu)效率(lv)(lv)(lv)，但(dan)(dan)該改造方(fang)案需增加(jia)占地面積、投資(zi)運行費用(yong)較(jiao)高，適用(yong)的(de)項目(mu)(mu)范圍(wei)較(jiao)窄陣，且振(zhen)打(da)導致的(de)顆(ke)(ke)(ke)粒(li)(li)物脫除(chu)效率(lv)(lv)(lv)降(jiang)低的(de)關鍵性(xing)問(wen)題依舊沒有(you)解決。

為適應新(xin)排放標準(zhun)，提高微細(xi)顆(ke)粒的脫除(chu)(chu)(chu)效(xiao)率，在傳統(tong)DESP除(chu)(chu)(chu)塵(chen)技(ji)術(shu)(shu)(shu)上發(fa)展新(xin)型除(chu)(chu)(chu)塵(chen)技(ji)術(shu)(shu)(shu)成為研究趨(qu)勢(shi)，新(xin)型靜電(dian)(dian)除(chu)(chu)(chu)塵(chen)增效(xiao)技(ji)術(shu)(shu)(shu)主要包(bao)括移動(dong)極板技(ji)術(shu)(shu)(shu)、低(di)低(di)溫技(ji)術(shu)(shu)(shu)、電(dian)(dian)袋復(fu)合(he)式(shi)除(chu)(chu)(chu)塵(chen)技(ji)術(shu)(shu)(shu)和濕式(shi)靜電(dian)(dian)除(chu)(chu)(chu)塵(chen)技(ji)術(shu)(shu)(shu)。但在實際工業應用中(zhong)，移動(dong)極板技(ji)術(shu)(shu)(shu)陽極板機械結(jie)構過(guo)于復(fu)雜，制作(zuo)、運行成本高，設備(bei)維護困難；低(di)低(di)溫電(dian)(dian)除(chu)(chu)(chu)塵(chen)器(qi)技(ji)術(shu)(shu)(shu)加(jia)(jia)裝熱交換裝置(zhi)會帶來(lai)系(xi)統(tong)流體阻力增加(jia)(jia)及設備(bei)占地(di)面積增加(jia)(jia)等(deng)問題(ti)，同時由(you)于煙氣溫度降低(di)到(dao)酸結(jie)露(lu)以(yi)下，換熱器(qi)及電(dian)(dian)除(chu)(chu)(chu)塵(chen)器(qi)均(jun)存(cun)在酸腐蝕風險(xian)。

電(dian)袋復(fu)(fu)合式除塵技術在實際運(yun)(yun)行中難以處(chu)理高(gao)溫煙(yan)氣，易出現(xian)“燒(shao)袋”現(xian)象，且對(dui)鍋爐(lu)運(yun)(yun)行煙(yan)氣濕度及含氧量要求高(gao)，輔助(zhu)系統(tong)復(fu)(fu)雜(za)，故(gu)障(zhang)率較高(gao)。

而WESP與常規(gui)的(de)DESP除(chu)塵(chen)原理及(ji)結構基本相同(tong)(tong)，使用噴淋系統在(zai)收塵(chen)極形(xing)成水膜代替傳統DESP的(de)振打清灰系統，兼具DESP的(de)優(you)點且克(ke)服了反電(dian)暈和二次(ci)揚塵(chen)問(wen)題(ti)，結構簡單同(tong)(tong)時又沒有以上增(zeng)效(xiao)技術存在(zai)的(de)問(wen)題(ti)，具有很高的(de)除(chu)塵(chen)效(xiao)率，隨(sui)著火電(dian)廠大氣(qi)污染物排放標準(zhun)的(de)日趨嚴格，濕(shi)式電(dian)除(chu)塵(chen)器在(zai)燃煤電(dian)站的(de)應用越來(lai)越廣(guang)泛(fan)，針對濕(shi)靜電(dian)除(chu)塵(chen)器脫除(chu)微細顆粒的(de)問(wen)題(ti)近(jin)年學(xue)者也開展了大量的(de)研究。

用ELPI測試(shi)不(bu)同電(dian)場強度(du)、停留時問、顆粒粒徑下微細顆粒在濕式電(dian)除(chu)(chu)塵器內的(de)脫除(chu)(chu)效(xiao)率(lv)，研究(jiu)發現，隨著停留時問增長，脫除(chu)(chu)效(xiao)率(lv)從57%上升至，隨著電(dian)場強度(du)增大，脫除(chu)(chu)效(xiao)率(lv)提(ti)高(gao)。同初始微細顆粒濃度(du)對脫除(chu)(chu)效(xiao)率(lv)的(de)影響，隨著顆粒物初始濃度(du)降(jiang)低，脫除(chu)(chu)效(xiao)率(lv)有所下降(jiang)，分(fen)級脫除(chu)(chu)效(xiao)率(lv)整(zheng)體(ti)成U型分(fen)布。

新型(xing)濕(shi)(shi)(shi)式(shi)電(dian)除(chu)(chu)(chu)(chu)(chu)塵器(qi)，除(chu)(chu)(chu)(chu)(chu)塵器(qi)荷電(dian)區(qu)與(yu)(yu)收塵區(qu)分開，發(fa)現(xian)荷電(dian)區(qu)對(dui)(dui)細顆(ke)(ke)(ke)粒(li)(li)(li)(li)物(wu)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)為10%，提(ti)高荷電(dian)區(qu)與(yu)(yu)收塵區(qu)電(dian)壓及減(jian)少收塵區(qu)極問距均(jun)對(dui)(dui)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)應具(ju)有(you)作(zuo)用(yong)，可(ke)高達99.7%。水膜對(dui)(dui)微細顆(ke)(ke)(ke)粒(li)(li)(li)(li)靜電(dian)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)的影(ying)響規律(lv)，結果(guo)表(biao)明粒(li)(li)(li)(li)徑為0.5μm時的脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)較低，隨著(zhu)(zhu)顆(ke)(ke)(ke)粒(li)(li)(li)(li)直(zhi)徑的增大或(huo)減(jian)小(xiao)，顆(ke)(ke)(ke)粒(li)(li)(li)(li)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)都將增大。水膜能夠顯(xian)(xian)著(zhu)(zhu)提(ti)高小(xiao)顆(ke)(ke)(ke)粒(li)(li)(li)(li)的靜電(dian)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)，當顆(ke)(ke)(ke)粒(li)(li)(li)(li)直(zhi)徑小(xiao)于(yu)O.lμm顆(ke)(ke)(ke)粒(li)(li)(li)(li)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)提(ti)高約(yue)(yue)50%，對(dui)(dui)大顆(ke)(ke)(ke)粒(li)(li)(li)(li)的脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)也有(you)較顯(xian)(xian)著(zhu)(zhu)的作(zuo)用(yong)高約(yue)(yue)8%。以上研究，多為濕(shi)(shi)(shi)式(shi)電(dian)除(chu)(chu)(chu)(chu)(chu)塵器(qi)污染物(wu)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)宏(hong)觀效(xiao)(xiao)率(lv)試(shi)驗，缺(que)乏(fa)對(dui)(dui)于(yu)濕(shi)(shi)(shi)式(shi)電(dian)除(chu)(chu)(chu)(chu)(chu)塵器(qi)內部顆(ke)(ke)(ke)粒(li)(li)(li)(li)的分布、受力與(yu)(yu)運動特性等方面的研究，而(er)這對(dui)(dui)于(yu)優化(hua)濕(shi)(shi)(shi)式(shi)電(dian)除(chu)(chu)(chu)(chu)(chu)塵過程進(jin)一步提(ti)高微細顆(ke)(ke)(ke)粒(li)(li)(li)(li)脫(tuo)(tuo)(tuo)(tuo)(tuo)除(chu)(chu)(chu)(chu)(chu)效(xiao)(xiao)率(lv)至關(guan)重(zhong)要(yao)。

通過ELPI對(dui)電除(chu)(chu)塵(chen)器除(chu)(chu)塵(chen)過程中微(wei)細(xi)顆(ke)粒(li)(li)(li)的(de)濃度(du)分布(bu)進行(xing)實(shi)時測量，基于顆(ke)粒(li)(li)(li)濃度(du)變化(hua)研究分析了水(shui)膜對(dui)微(wei)細(xi)顆(ke)粒(li)(li)(li)在靜電除(chu)(chu)塵(chen)器內的(de)分布(bu)狀況、運(yun)動軌跡、沉積(ji)情況、分級效(xiao)率(lv)及力學行(xing)為等的(de)影(ying)響，揭示水(shui)膜影(ying)響微(wei)細(xi)顆(ke)粒(li)(li)(li)脫除(chu)(chu)效(xiao)率(lv)的(de)機理，為濕式(shi)電除(chu)(chu)塵(chen)器脫除(chu)(chu)微(wei)細(xi)顆(ke)粒(li)(li)(li)奠定理論基礎。

改進電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)結構(gou)(gou)　　在(zai)單區(qu)(qu)(qu)(qu)(qu)靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)中(zhong)，粒(li)子的荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)捕(bu)(bu)集都在(zai)一個(ge)區(qu)(qu)(qu)(qu)(qu)內(nei)完成，而雙(shuang)(shuang)(shuang)區(qu)(qu)(qu)(qu)(qu)靜電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)的粒(li)子荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)部(bu)(bu)分(fen)(fen)(fen)和(he)收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)部(bu)(bu)分(fen)(fen)(fen)是分(fen)(fen)(fen)開(kai)的。前區(qu)(qu)(qu)(qu)(qu)安裝(zhuang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈極(ji)(ji)，粉(fen)(fen)塵(chen)(chen)(chen)(chen)在(zai)此區(qu)(qu)(qu)(qu)(qu)內(nei)荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，后區(qu)(qu)(qu)(qu)(qu)安裝(zhuang)收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)極(ji)(ji)，粉(fen)(fen)塵(chen)(chen)(chen)(chen)在(zai)此區(qu)(qu)(qu)(qu)(qu)內(nei)被捕(bu)(bu)集。雙(shuang)(shuang)(shuang)區(qu)(qu)(qu)(qu)(qu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)技術(shu)是在(zai)末(mo)(mo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)中(zhong)，將(jiang)(jiang)單一的高(gao)壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)塵(chen)(chen)(chen)(chen)荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)區(qu)(qu)(qu)(qu)(qu)和(he)收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)區(qu)(qu)(qu)(qu)(qu)，并用不同的高(gao)壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。根據需要，有(you)所區(qu)(qu)(qu)(qu)(qu)別(bie)地向這兩(liang)個(ge)區(qu)(qu)(qu)(qu)(qu)供應適宜的運行(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)其(qi)(qi)荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)功能(neng)。荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)區(qu)(qu)(qu)(qu)(qu)主要是對粉(fen)(fen)塵(chen)(chen)(chen)(chen)進行(xing)荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)同時又在(zai)陽極(ji)(ji)板(ban)(ban)上(shang)收(shou)(shou)(shou)集帶負(fu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)(he)(he)的粉(fen)(fen)塵(chen)(chen)(chen)(chen)。收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)區(qu)(qu)(qu)(qu)(qu)則(ze)使(shi)(shi)顆粒(li)從(cong)煙氣(qi)(qi)中(zhong)分(fen)(fen)(fen)離，將(jiang)(jiang)絕大(da)部(bu)(bu)分(fen)(fen)(fen)的顆粒(li)吸(xi)(xi)附(fu)到(dao)(dao)收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)板(ban)(ban)上(shang)；同一些帶正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)(he)(he)的顆粒(li)吸(xi)(xi)附(fu)至其(qi)(qi)陰(yin)極(ji)(ji)(又稱(cheng)輔(fu)助電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji))。雙(shuang)(shuang)(shuang)區(qu)(qu)(qu)(qu)(qu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)由于荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)與收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)區(qu)(qu)(qu)(qu)(qu)分(fen)(fen)(fen)開(kai)后，在(zai)荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)區(qu)(qu)(qu)(qu)(qu)可以比(bi)較靈活(huo)地調整電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，通過減(jian)小極(ji)(ji)間距，可以在(zai)較低的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)下(xia)能(neng)使(shi)(shi)塵(chen)(chen)(chen)(chen)粒(li)充分(fen)(fen)(fen)地荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，運行(xing)也很。在(zai)收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)區(qu)(qu)(qu)(qu)(qu)，可地提(ti)(ti)高(gao)收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)的均勻性，有(you)利(li)于提(ti)(ti)效(xiao)率。對雙(shuang)(shuang)(shuang)區(qu)(qu)(qu)(qu)(qu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)對粉(fen)(fen)塵(chen)(chen)(chen)(chen)驅進速度的提(ti)(ti)高(gao)系數研究(jiu)表明，為防(fang)止電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)發(fa)生反電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)暈問題(ti)并提(ti)(ti)效(xiao)率，在(zai)末(mo)(mo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)采用雙(shuang)(shuang)(shuang)區(qu)(qu)(qu)(qu)(qu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)結構(gou)(gou)，將(jiang)(jiang)粉(fen)(fen)塵(chen)(chen)(chen)(chen)荷(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)、收(shou)(shou)(shou)塵(chen)(chen)(chen)(chen)的過程及其(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)設(she)備分(fen)(fen)(fen)開(kai)，使(shi)(shi)兩(liang)個(ge)區(qu)(qu)(qu)(qu)(qu)域的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)運行(xing)參數分(fen)(fen)(fen)別(bie)達到(dao)(dao)較佳化。通過實驗研究(jiu)表明，與傳統臥(wo)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)器(qi)相比(bi)，雙(shuang)(shuang)(shuang)區(qu)(qu)(qu)(qu)(qu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)可使(shi)(shi)粉(fen)(fen)塵(chen)(chen)(chen)(chen)平均驅進速度提(ti)(ti)高(gao)20%左右；除(chu)塵(chen)(chen)(chen)(chen)效(xiao)率則(ze)隨之上(shang)升，并將(jiang)(jiang)粉(fen)(fen)塵(chen)(chen)(chen)(chen)排放(fang)濃度降低到(dao)(dao)50mg/m3以下(xia)。