| 摘要 |
The method of and apparatus for controlling additive delivery to and circulation within an air pollution control system. The system of the invention controls the scrubber recycle flow rate and additive-to-fuel delivery ratio in response to an established pH operating level in the scrubber. The established pH operating level may be varied within limits in response to the sulfur oxide content of the gas leaving the scrubber for optimum additive usage.
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