Cov yam ntxwv tseem ceeb thiab cov qauv:
Nyob rau hauv qhov kev ua ntawm cua kub cua sov thiab convection hauv qhov cub, zaj duab xis cais tawm CH₂Cl₂ ntawm qhov chaw, uas ib feem ntawm lub xeev gaseous yog condensed rau hauv kua, ib feem ntawm cov roj tail uncondensed yog siv ua cov roj qhuav circulating, thiab lwm qhov yog tso tawm rau hauv lub tail roj rov qab system. Peb xaiv tshwj xeeb txiv maj phaub plhaub activated carbon, uas muaj qhov zoo ntawm CH₂Cl₂ loj adsorption peev xwm, siab purification efficiency thiab zoo hydrophobicity. Nyob rau hauv daim ntawv ntawm kab rov tav adsorption tank, lub peev xwm thauj cov pa roj carbon yog loj, kev ua haujlwm yooj ywm yog siab, lub tail roj concentration ntawm CH₂Cl₂ yog tsawg dua 20mg / m³, thiab tus nqi rov qab yog ntau dua 99.97%.