電捕焦油器結構及原理
電(dian)捕(bu)焦油(you)器采(cai)用結構形(xing)式有同心圓式、管式和蜂窩式等三(san)種。無論哪種結構，其(qi)工(gong)作原理，即在金(jin)(jin)屬(shu)導線與金(jin)(jin)屬(shu)管壁〔或極板〕間施加高壓直流電(dian)，以(yi)維持足以(yi)使(shi)氣體產(chan)生電(dian)離的電(dian)場，使(shi)陰陽極之(zhi)間形(xing)成電(dian)暈(yun)區。
工作機理(li)：
氣(qi)(qi)(qi)體(ti)的(de)放(fang)電(dian)(dian)(dian)過程 ： 在(zai)通常(chang)情(qing)況下(xia)氣(qi)(qi)(qi)體(ti)是不(bu)導電(dian)(dian)(dian)的(de)，但在(zai)高壓(ya)電(dian)(dian)(dian)場(chang)的(de)作(zuo)用下(xia)氣(qi)(qi)(qi)體(ti)內部的(de)電(dian)(dian)(dian)子便會獲得足夠的(de)能(neng)量成(cheng)為自(zi)由電(dian)(dian)(dian)子而(er)導電(dian)(dian)(dian)，被(bei)稱為自(zi)發(fa)性電(dian)(dian)(dian)離現象。氣(qi)(qi)(qi)體(ti)的(de)自(zi)發(fa)性電(dian)(dian)(dian)離是建立在(zai)非均勻(yun)性電(dian)(dian)(dian)場(chang)中。在(zai)均勻(yun)性電(dian)(dian)(dian)場(chang)中，隨(sui)著(zhu)電(dian)(dian)(dian)壓(ya)的(de)增(zeng)加(jia)，只要其(qi)間(jian)(jian)任(ren)何一(yi)點發(fa)生電(dian)(dian)(dian)離，兩極間(jian)(jian)將立即充(chong)滿帶電(dian)(dian)(dian)離子，整(zheng)個空間(jian)(jian)的(de)氣(qi)(qi)(qi)體(ti)被(bei)擊穿。此時電(dian)(dian)(dian)流急劇(ju)增(zeng)加(jia)而(er)形成(cheng)火花(hua)放(fang)電(dian)(dian)(dian)。而(er)在(zai)非均勻(yun)性電(dian)(dian)(dian)場(chang)中，電(dian)(dian)(dian)場(chang)強度則隨(sui)兩極間(jian)(jian)的(de)距離增(zeng)大而(er)迅(xun)速下(xia)降(jiang)。
工業中的(de)選擇 ：
根據(ju)供電(dian)(dian)(dian)(dian)極性(xing)的(de)不同，電(dian)(dian)(dian)(dian)暈有陰(yin)(yin)電(dian)(dian)(dian)(dian)暈和陽電(dian)(dian)(dian)(dian)暈之(zhi)分(fen)。在(zai)工業(ye)生(sheng)產中，大多采(cai)用陰(yin)(yin)電(dian)(dian)(dian)(dian)暈，因(yin)為在(zai)相同的(de)條(tiao)件下，陰(yin)(yin)電(dian)(dian)(dian)(dian)暈可以獲(huo)得比陽電(dian)(dian)(dian)(dian)暈高的(de)電(dian)(dian)(dian)(dian)流，而且(qie)其(qi)閃絡(luo)電(dian)(dian)(dian)(dian)壓也(ye)遠(yuan)比陽電(dian)(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)(dian)要高。
影響電(dian)捕性能的(de)主(zhu)要因素：
由于影(ying)響電捕焦油器操作性能(neng)的因(yin)素很多(duo)，選(xuan)型時(shi)請告知(zhi)粉塵與(yu)霧滴的密度(du)、粘度(du)、比電阻、氣體溫度(du)、壓(ya)力、濕度(du)、流(liu)速與(yu)雜濃度(du)等。
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