Improved vortex reactor system

An improved vortex reactor system for affecting fast pyrolysis of biomass and Refuse Derived Fuel (RDF) feed materials comprising:

• a vortex reactor having its axis vertically disposed in relation to a jet of a horizontally disposed stream ejector that impels feed material from a feeder and solids from a recycle loop along with a motive gas into a top part of said reactor;
• wherein said top part of said vertically disposed vortex reactor has a wear plate assembly comprising:
• a removable pipe flange which has been replaced by said wear plate assembly, said wear plate assembly comprising a wear plate of a sectional circular piece of pipe that fits into a curved dovetail slot that positions said wear plate opposite a feed tangential entry position of the top part of said vortex reactor, a wear ring spacer that positions said wear plate and a wear ring longitudinally, and a removable wear ring;
• said dovetail slot being made by removal of an approximately 90.degree. section of a reactor wall of said vortex reactor and converting said approximately 90.degree. section with a larger telescoping pipe.