초록 ▼

The present invention relates to regenerative thermal or catalytic oxidizers and methods of operation thereof for oxidizing combustible components of feed gas mixtures. In accordance with the disclosed invention, operation of the heater used to supply supplemental heat to regenerative heat transfer

The present invention relates to regenerative thermal or catalytic oxidizers and methods of operation thereof for oxidizing combustible components of feed gas mixtures. In accordance with the disclosed invention, operation of the heater used to supply supplemental heat to regenerative heat transfer oxidizers is controlled such that the input load to the heater is varied between a maximum input load and a nominal input load in response to a measured control temperature. The present invention provides improved temperature uniformity across the system for more efficient operation.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for controlling operation of a heater associated with a regenerative heat transfer oxidizer system used to oxidize a combustible component of an oxygen-containing feed gas mixture, the system comprising a vessel containing at least two heat exchange zones in fl

[ What is claimed is:] [1.]1. A method for controlling operation of a heater associated with a regenerative heat transfer oxidizer system used to oxidize a combustible component of an oxygen-containing feed gas mixture, the system comprising a vessel containing at least two heat exchange zones in fluid communication through a void chamber and the heater for introducing supplemental heat energy into the void chamber, each of the heat exchange zones containing a gas-permeable bed comprising solid heat exchange material, the system further comprising a sensor for measuring the temperature at a position within the vessel and a heater controller for varying the input load to the heater in response to the temperature measured at the sensor, the method comprising:measuring the temperature at the sensor;comparing the measured temperature to a set temperature value, T.sub.s ;providing a nominal input load to the heater while the temperature measured at the sensor is above T.sub.s such that supplemental heat energy is introduced into the void chamber at a rate below that required to prevent the temperature measured at the sensor from decreasing; andproviding a maximum input load to the heater while the temperature measured at the sensor is below T.sub.s such that supplemental heat energy is introduced into the void chamber at a rate sufficient to increase the temperature measured at the sensor, transitions between providing the nominal input load to the heater and providing the maximum input load to the heater proceeding rapidly and without regard to the effect on the temperature measured at the sensor.