Manchester Memoirs, Vol. xlvi. (1902), No. 8. 



VIII. Chemical Gas Washing Apparatus. 

 By C. E. Stromeyer, M.Inst. C.E. 



Received and read January yth, 1902. 



In connection with some boiler trials which will 

 shortly have to be carried out, it was desirable to devise a 

 gas absorption apparatus containing as small a quantity 

 as possible of absorbing fluid, and capable of dealing with 

 large volumes of gas, conditions which are not infrequently 

 met with in chemical laboratories. The various types of 

 potash bulbs, used by chemists, were found to be un- 

 suitable, more especially as the time during which the 

 gas remains in contact with the absorbing fluid is not 

 much greater than the time taken by each bubble to pass 

 upwards through about one inch of fluid. Not being able 

 on account of the growing pressure to increase the depth of 

 fluid, I devised the apparatus shewn in the figure, in which 

 the gas, after passing through A, breaks into bubbles at 

 the point X, where it first comes in contact with the 

 absorbing fluid which circulates in BB, as indicated. The 

 bubbles which are formed at X are constrained to travel 

 through several inches of coiled glass tubing CC, so that the 

 time of contact does not now depend on the depth of 

 fluid but on the volume of gas passed through the 

 apparatus per second. On entering the vessel DD the 

 bubbles burst, the gas escaping upwards, the fluid 

 returning to the pipe BB and circulating back to the 

 point X. 



February lofh, igo2. 



