The method 23 wherein both the cooling water and {HEAD ~ the oxidant} are injected through the side port into {TAIL ~ the reaction chamber} in a direction from the back portion to the front portion 
are injected into
The method 23 wherein both the cooling water and { HEAD ~ the oxidant } are injected through the side port into { TAIL ~ the reaction chamber } in a direction from the back portion to the front portion
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH