This invention is particularly useful in gas/liquid contacting processes where the packed tower or column is prone to undergo {TAIL ~ plugging} due to the presence or formation of solid reactant or reaction product material within {HEAD ~ the tower} 
This invention is particularly useful in gas / liquid contacting processes where the packed tower or column is prone to undergo { TAIL ~ plugging } due to the presence or formation of solid reactant or reaction product material within { HEAD ~ the tower }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD