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US 2011/0253398 A1Published application
Apparatus for monitoring and controlling spontaneous firing of stored coal
AssigneeIHI Corporation
InventorShinya MOURI
Life of this patent
Estimating the term…
Abstract
Thermocouples are suspended to extend vertically and centrally of a coal reservoir to sense temperatures of coal at vertically plural points. When at least one of temperatures of coal sensed exceeds a preset temperature, a purge command signal is output by a controller to an inert gas valve. When a temperature increase rate of at least one of the coal temperatures sensed exceeds a preset rate, a water spraying command signal is output by the controller to a water spraying valve.
Claims4
An apparatus for monitoring and controlling spontaneous firing of stored coal comprising
- temperature detection means suspended to vertically extend centrally of a coal reservoir for sensing temperatures of coal at vertically plural points,
- inert gas purge means for supplying inert gas into said coal reservoir and
- a controller for outputting a purge command signal to said inert gas purge means when at least one of the coal temperatures sensed at the vertically plural points by said temperature detection means exceeds a preset temperature.
Dependencies are inferred from the claim text.