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.