STEAM/CARBON RATIO DETECTION AND CONTROL
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United States of America Patent
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Issued Date -
May 16, 2013
app pub date -
Jul 2, 2010
filing date -
Jul 2, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Steam is provided to the primary inlet (16) of an ejector (13), which also receives natural gas at a secondary inlet (28). A computer responds to a signal (37) indicating current in the load of a fuel cell as well as a signal (43) indicating temperature of a steam reformer (10) to move a linear actuator (23) to control a needle (21) that adjusts the size of the steam orifice. Reformate is fed to a separator scrubber (48) which cools the reformate to its dew point indicated by a sensor (71). From that, a controller (25) generates the fuel/carbon ratio for display (84) and to bias a signal on a line (24) regulating the amount of steam passing through an ejector (13) to the inlet (11) of the reformer. Alternatively, the reformate may be cooled to its dew point by a controllable heat exchanger (58a) in response to pressure (94) and temperature (71) signals.
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