{HEAD ~ A reactor} 28, wherein the longitudinal expansion joint is disposed closer to the front end of the reaction chamber, and {TAIL ~ a radial expansion joint} is closer to the back end of the reaction chamber 
{ HEAD ~ A reactor } 28 , wherein the longitudinal expansion joint is disposed closer to the front end of the reaction chamber , and { TAIL ~ a radial expansion joint } is closer to the back end of the reaction chamber
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH