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The boiler will be equipped with a low NO, burner to reduce NOx levels in the <br /> exhaust. The boiler will have provisions for exhaust gas recirculation, <br /> secondary air, and oxygen monitoring to maintain efficient combustion. <br /> Nebraska Boiler Company provided the air emission data for HC, CO, NOx, <br /> sox, and particulates. Carbon dioxide and water vapor emissions were <br /> calculated from the fuel input and combustion exhaust data provided. <br /> B. Product Dryer Blower Exhaust <br /> The equipment for drying the sodium bicarbonate product will consist of a <br /> combination of a dryer and cooler equipped with a baghouse and blowers. <br /> In the dryer/cooler system, fine particles of product will be carried by the <br /> flowing gas streams into a common baghouse for recovery. A blower draws <br /> the warm moist air through the baghouse fabric and discharges the stream <br /> through a stack into the atmosphere. A small portion of the sodium <br /> bicarbonate in the baghouse will escape through the baghouse fabric and <br /> discharge with the moist air into the atmosphere. <br /> The exhaust from the baghouse will be vented through a stack approximately <br /> 30 to 35 feet above floor level. The estimated temperature of the baghouse <br /> exhaust is approximately 175°F. <br /> The estimated air emissions were calculated from typical vendor system flow <br /> balance data. The particulates emitted from the blower will consist almost <br /> entirely of sodium bicarbonate product. Water vapor is a major constituent in <br /> the discharge. <br /> C. Product Dust Collection Exhausts <br /> The plant design includes several points for the collection of cooled product <br /> dusts emanating from the product storage and handling system. It is <br /> anticipated that a central baghouse with a draft blower will be used to collect <br /> all of these dust streams. <br /> The exhaust from the baghouse is designed to be vented to the atmosphere <br /> through a vent tube on the blower directly above the baghouse. A preliminary <br /> G:\LM\AA78545.002\Reclamation\ReGamexh.DOC D-49 <br />