A preferred reactor includes an outer shell having first and second ends and an inner surface, a primary inner shell extending into the outer shell, {HEAD ~ the primary inner shell} defining {TAIL ~ a heat} exchanging chamber and having primary and secondary ends, and a secondary inner shell having a first end located adjacent the secondary end of the primary inner shell 
defining
A preferred reactor includes an outer shell having first and second ends and an inner surface , a primary inner shell extending into the outer shell , { HEAD ~ the primary inner shell } defining { TAIL ~ a heat } exchanging chamber and having primary and secondary ends , and a secondary inner shell having a first end located adjacent the secondary end of the primary inner shell
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 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 OTH