| 摘要 |
Dirty exhaust air is taken through a plurality of curtains of a liquid and the exhaust air flow changes direction after each passage through a liquid curtain. After having gone through the liquid curtains, the exhaust air is introduced into a heat exchanger 7, in which heat exchange with fresh air occurs, and the liquid content of the exhaust air is also condensed so that the condensate can be separated and disposed of. After this, the exhaust air is taken through an electrostatic filter. <IMAGE> |
