Drum and door assembly for catalytic microwave depolymerization reactor

A door assembly for a microwave reactor, comprising:

• a microwave waveguide to direct microwaves from an external microwave source to inside the microwave reactor, said microwave waveguide having a waveguide interface for preventing backflow of a process gas into said microwave waveguide;
• an inlet for entry of matter to be treated in said microwave reactor;
• a first seal at a periphery of said door assembly, to sealably interface with a static front of said microwave reactor;
• a second seal, inserted into a groove on an inside face of said door assembly, to sealably interface with an opening of a microwave reactor drum, said groove having a width of about 12.9 inches (32.766 cm) divided by an integer, said second seal to prevent solids and liquids from flowing outside of said reactor drum;
• and
• a ring choke, to contact a choke arranged on a periphery of said opening of said reactor drum;
• wherein a contact of said ring choke with said choke is adjustable, and said ring choke comprises means to increase a pressure to modulate its position along the longitudinal axis of said reactor drum, to increase contact with said choke.