Although {HEAD ~ the vertical orientation} of {TAIL ~ the reactor} with inlet at the top is preferred, it is appreciated that the flow direction can be reversed or the reactor may be slanted towards the horizontal 
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Although { HEAD ~ the vertical orientation } of { TAIL ~ the reactor } with inlet at the top is preferred , it is appreciated that the flow direction can be reversed or the reactor may be slanted towards the horizontal
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL 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