ACTUAL COSTS AND CAPACITY OF GASWORKS. 



221 



4'- 6' 



to the top. The interior of the scrubber is fitted with 

 boards, each |- inch thick, at J inch spaces. All castings 

 were specified to be of the best close grey iron, 

 and free from flaws of any description. Two coats of 

 paint were specified, one at the 

 contractor's works, after inspection 

 by the engineer, and the other after 

 erection. 



Clean water is pumped to the 

 small storage tank at the top, and 

 weak liquor from the underground 

 storage tank to the intermediate 

 distributor. The gas, therefore, 

 first passes through the strong 

 liquor in the Livesey washer, then 

 through the weak liquor in the 

 lower portion of the scrubber, 

 and finally through the clean 

 water portion at the top. 



Section. Elevation. 



Fig. 25. Tower Scrubber. 



'Ian. 



Opinion varies greatly as to what is the proper capacity 

 of scrubbing plant, and, doubtless, it greatly depends upon 

 the arrangement at work. As arranged here, the writer has 

 no doubt that a time contact of ten minutes from entering 

 Livesey washer to leaving scrubber at period of maximum 

 make would be sufficient to thoroughly cleanse the gas from 



