Title: Recuperative thermal recombining system for handling loss of coolant

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Abstract: A recycle loop method and recuperative heating system is provided for thermally recombining hydrogen and oxygen, such as may be desired in connection with a dissociated gas stream from a containment vessel for a nuclear reactor under loss of coolant accident conditions. The dissociated charge stream is preferably heated by indirect heat exchange with a resulting water vapor containing combined stream to effect heat conservation and, also preferably, the recuperative heat exchange operation and the high temperature recombining reaction are carried out in a unitary zone incorporating electrical, non-flame, heat input means. A particular feature of the present system resides in having the recycle of a portion of the resulting combined stream from the recombiner section pass into admixture with the hydrogen-oxygen containing charge stream to preclude an explosive condition and further having the quantity of such recycle regulated responsive to a temperature differential being measured across the recombiner zone as an indication of the oxygen level in such charge stream.


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