Process and apparatus for treatment of incinerator bottom ash and fly ash

An apparatus comprising:

• an incinerator;
• a gasification/vitrification reactor;
• an interface connecting a secondary combustion zone in an upper part of the gasification/vitrification reactor to the incinerator;
• an air inlet in the secondary combustion zone in the gasification/vitrification reactor;
• a first feed passage for transporting bottom ash from a bottom of the incinerator to a lower part of the gasification/vitrification reactor above a carbonaceous bed in the gasification/vitrification reactor at a position below the position of the air inlet;
• an incinerator exhaust gas fly ash recovery system, including one or more of:
• a heat recovery steam generator;
• a boiler;
• a heat exchanger;
• a scrubber;
• and a bag filter, between the incinerator and an emission stack;
• a second feed passage for transporting fly ash collected by the fly ash recovery system to the gasification/vitrification reactor;
• and
• a third passage for routing syngas generated in the gasification/vitrification reactor from the secondary combustion zone back to the incinerator.

An apparatus comprising:

• an incinerator;
• a gasification/vitrification reactor;
• a first feed passage for transporting bottom ash from a bottom of the incinerator to a lower part of a gasification/vitrification reactor above a carbonaceous bed in the gasification/vitrification reactor;
• an interface connecting a secondary combustion zone in an upper portion of the gasification/vitrification reactor to the incinerator configured to allow syngas produced in the gasification/vitrification reactor to pass directly from the secondary combustion zone into the incinerator;
• an air inlet in the secondary combustion zone in the gasification/vitrification reactor, wherein the first feed passage is at a position below the position of the air inlet;
• and
• an igniter in the upper portion of the gasification/vitrification reactor.