| 摘要 |
The present invention is generally directed toward an apparatus and method for the heating of an aqueous mixture to vaporization, more specifically toward the heating of dilution air through a dilution air heating coil that is placed within the path of exhaust gas. In a power plant utilizing an emissions reduction process, such as a selective catalytic reduction (SCR) process, or other type of process, to remove harmful components, such as nitrous oxide (NO.sub.x), from a stream of flue gas wherein the emission reduction process includes the injection of vaporized aqueous mixture into the stream of flue gas, the present invention comprises a dilution air heating coil being placed within the path of exhaust gas to heat dilution air that is then subsequently used in the vaporization of the ammonia.
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