APPARATUS FOR MONITORING AND CONTROLLING SPONTANEOUS FIRING OF STORED COAL

摘要

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.