초록 ▼

A method and apparatus are provided to control the burning of a lean hydrocarbon containing gas stream under stable conditions using a combination of control logic and hardware. Temperature within the combustor is controlled by using a plurality of staging valves that adjust the amount of oxygen and

A method and apparatus are provided to control the burning of a lean hydrocarbon containing gas stream under stable conditions using a combination of control logic and hardware. Temperature within the combustor is controlled by using a plurality of staging valves that adjust the amount of oxygen and auxiliary fuel supplied to the combustor burner. Oxygen level is controlled by using actuated butterfly valves that control the flow of primary air to the combustor. The system has pressure control valves for anticipating and compensating for pressure changes and resulting air flow changes as well as temperature monitors and transmitters for anticipating and correcting temperature drops.

대표청구항 ▼

[ We claim:] [1.] A gas phase combustor control system for controlling the combustion of low calorific heating value gas streams generated by a main process at low oxygen concentrations comprising:a gas phase combustor;means for directing a low calorific heating value gas stream from a main process

[ We claim:] [1.] A gas phase combustor control system for controlling the combustion of low calorific heating value gas streams generated by a main process at low oxygen concentrations comprising:a gas phase combustor;means for directing a low calorific heating value gas stream from a main process to the combustor;means for direct immediate control of a temperature in the combustor;means for direct immediate control of an oxygen concentration within the combustor;means for detecting trends in pressure changes within the process and initiating preemptive compensation in combustion conditions in response to said trends in pressure changes; andmeans for detecting trends in temperature changes and initiating preemptive changes in combustion conditions within the combustor in response to the detected trends in temperature changes.