Devices are provided for introducing {HEAD ~ separately reactants} to within {TAIL ~ the tubes} of the reactor and coolant to the channels defined between adjacent tubes of the bundle 
Devices are provided for introducing { HEAD ~ separately reactants } to within { TAIL ~ the tubes } of the reactor and coolant to the channels defined between adjacent tubes of the bundle
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH