Specifically Designed to Remove SO3 Aerosol
Baldwin’s SO3 Aerosol Removal Series is specifically designed for stack sample applications with relatively high SO3 content (>10 ppm). The SO3 Aerosol Removal Series has special timing circuits that alternate freeze and thaw the precisely packed heat exchangers. Before an active heat exchanger thaws, the alternate active heat exchanger reaches the -7°C set-point to ensure uninterrupted operation and no SO3 slippage. This sub zero temperature forms a thin ice layer that captures and removes SO3 aerosol from the sample stream.
Features Baldwin’s Unique Durinert® Heat Exchangers
Durinert® offers the inertness of glass but the durability and heat transfer capability of stainless steel. The inertness and durability of Durinert® heat exchangers make them the ideal solution for low NOx and acidic SO3 applications.
General Description of Operation
The two heat exchangers located on the left side of the sample cooler are connected in series. The sample stream first passes through an inactive (i.e., not cooled with thermoelectric elements) Durinert® coated heat exchanger used for removing gross amounts of water. The sample then passes to an active Durinert® coated heat exchanger. The exit dew point from this heat exchanger is controlled to +4°C, thereby reducing the moisture concentration to less than 1%. The gas sample then flows through the gas sample pump where it first alternately passes through the freezing Kynar® packed heat exchangers, located on the right side of the cooler, then to three-way Teflon® solenoid control valve, and finally to the remainder gas sampling system. Condensate is pumped from each heat exchanger by a dedicated peristaltic drain pump head.
Model Comparision