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Wet Gas Scrubber Description
The ExxonMobil Wet Gas Scrubber System as provided by Hamon Research-Cottrell, Inc. is a simple system
consisting of an "on-site" WGS (Wet Gas Scrubber) and typically an "off-site" PTU (Purge Treatment Unit).
An overview of the system is shown below:
- The small, on-site WGS washes the flue gas removing both particulate and sulfur oxides.
- The cleaned flue gas is then exhausted to the atmosphere with residual particulate and sulfur oxides substantially below specified limits.
- Other streams entering the Wet Gas Scrubber are water and an alkali.
- A small liquid purge stream leaves the WGS for further treatment.
- The purge stream, which contains the particulate and sulfur oxides removed from the flue gas, may either be treated in the refinery's existing wastewater treatment system or may be treated in a dedicated PTU (Purge Treatment Unit).
- The discharge from the PTU consists of earth moist solids suitable for sanitary landfill disposal and a benign liquid.
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