有機廢氣處理設備在用多孔性固體物質處理流體混合物時,流體中的某一組分或某些組分可被吸表面并濃集其上,此現象稱為吸附。吸附處理廢氣時,吸附的對象是氣態污染物,氣固吸附。被吸附的氣體組分稱為吸附質,多孔固體物質稱為吸附劑。
固體(ti)表(biao)面吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)了吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)質(zhi)后(hou),一(yi)(yi)部被吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)的(de)吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)質(zhi)可從吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)劑(ji)(ji)表(biao)面脫離,此現(xian)附(fu)(fu)(fu)(fu)(fu)。而當(dang)吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)進行一(yi)(yi)段時(shi)間(jian)后(hou),由于表(biao)面吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)質(zhi)的(de)濃集,使其吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)能(neng)力明(ming)顯(xian)下降而吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)凈化的(de)要(yao)(yao)求(qiu),此時(shi)需要(yao)(yao)采用(yong)一(yi)(yi)定的(de)措施使吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)劑(ji)(ji)上(shang)已吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)的(de)吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)質(zhi)脫附(fu)(fu)(fu)(fu)(fu),以(yi)協的(de)吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)能(neng)力,這個過程(cheng)稱(cheng)為吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)劑(ji)(ji)的(de)再生。因此在實際(ji)吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)工程(cheng)中(zhong)(zhong),正(zheng)是利用(yong)吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)一(yi)(yi)再生一(yi)(yi)再吸(xi)(xi)(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)的(de)循環過程(cheng),達到除去廢氣中(zhong)(zhong)污染物質(zhi)并回收廢氣中(zhong)(zhong)有(you)用(yong)組分(fen)。