Isihlungi se-vacuum sebhande eliqhubekayo le-Zdu iyithuluzi lokuhlukanisa uketshezi oluqinile oluqhutshwa ukucindezela kwe-vacuum negative.Ngokwesakhiwo, isigaba sokuhlunga sihlelwa ngokuhambisana nobude obuvundlile, esingaqedela ngokuqhubekayo ukuhlunga, ukuwasha, ukomisa nokuvuselelwa kwendwangu yokuhlunga.Idivayisi inokusebenza kahle kokuhlunga, umthamo omkhulu wokukhiqiza, umphumela omuhle wokugeza, umswakama ophansi wekhekhe lokuhlunga nokusebenza okuguquguqukayo, Izindleko zokugcinwa okuphansi.Ingasetshenziswa kabanzi ekuhlukaniseni uketshezi oluqinile ku-metallurgy, izimayini, imboni yamakhemikhali, ukwenza amaphepha, ukudla, ikhemisi, ukuvikelwa kwemvelo kanye neminye imikhakha, ikakhulukazi e-gypsum dehydration ku-flue gas desulfurization (FGD).