Abstract: A system to control the emissions of a fluid stream in a cyclical fashion utilizing an up-flow cycle and a down-flow cycle. The system may include a first inlet and a first outlet at a first end of the system and a second inlet and a second outlet at a second end of the system, a catalyst zone between the first end and second end, two heat transfer zones, at least one heat transfer zone positioned between the catalyst zone and the first end of the system and between the catalyst zone and the second end of the system, and two heating zones, at least one heating zone positioned between the catalyst zone and each of the at least one heat transfer zones. The symmetrical arrangement permits a bi-directional fluid cycle to recover a portion of the energy supplied to the system during each cycle.

Abstract: A system to control the emissions of a fluid stream in a cyclical fashion utilizing an up-flow cycle and a down-flow cycle. The system may include a first inlet and a first outlet at a first end of the system and a second inlet and a second outlet at a second end of the system, a catalyst zone between the first end and second end, two heat transfer zones, at least one heat transfer zone positioned between the catalyst zone and the first end of the system and between the catalyst zone and the second end of the system, and two heating zones, at least one heating zone positioned between the catalyst zone and each of the at least one heat transfer zones. The symmetrical arrangement permits a bi-directional fluid cycle to recover a portion of the energy supplied to the system during each cycle.

Abstract: A system to control the emissions of a fluid stream in a cyclical fashion utilizing an up-flow cycle and a down-flow cycle. The system may include a first inlet and a first outlet at a first end of the system and a second inlet and a second outlet at a second end of the system, a catalyst zone between the first end and second end, two heat transfer zones, at least one heat transfer zone positioned between the catalyst zone and the first end of the system and between the catalyst zone and the second end of the system, and two heating zones, at least one heating zone positioned between the catalyst zone and each of the at least one heat transfer zones. The symmetrical arrangement permits a bi-directional fluid cycle to recover a portion of the energy supplied to the system during each cycle.

Abstract: A system to control the emissions of a fluid stream in a cyclical fashion utilizing an up-flow cycle and a down-flow cycle. The system may include a first inlet and a first outlet at a first end of the system and a second inlet and a second outlet at a second end of the system, a catalyst zone between the first end and second end, two heat transfer zones, at least one heat transfer zone positioned between the catalyst zone and the first end of the system and between the catalyst zone and the second end of the system, and two heating zones, at least one heating zone positioned between the catalyst zone and each of the at least one heat transfer zones. The symmetrical arrangement permits a bi-directional fluid cycle to recover a portion of the energy supplied to the system during each cycle.

Abstract: A method and apparatus for on-line wash-down of a heat sink media bed in a regenerative heat exchanger of a regenerative fume incinerator is disclosed. When a heat sink media bed requires cleaning, the selected regenerative heat exchanger is cooled while the remaining regenerative heat exchangers are operated in their normal mode of operation. When the selected media bed reaches a temperature which is less than the thermal-shock temperature of the media material, a cleaning fluid is sprayed on the media surfaces through spray-pipes which are installed within the media bed. After the media surfaces are washed down, the selected regenerative heat-exchanger is reverted back to its normal mode of operation. The regenerative heat exchanger can also be automatically burnt-out of deposited gasifiable matter prior to the wash-down. Random or sequential burn-out and wash-down of the regenerative heat-exchangers can be performed.