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