Washer Scrubber

Some articles on scrubbers, scrubber:

History Of Manufactured Gas - Appliances and Machinery of The Historic Gas-works - Other Gas-Works Facilities - The Washer–scrubber
... Scrubbers which utilized water were designed in the 25 years after the foundation of the industry ... was found to be best performed by the Tower Scrubber ... This scrubber consisted of a tall cylindrical vessel, which contained trays or bricks which were supported on grids ...