Patent ID: 7854789
Filing Date: 2010-12-21
Classification: B01D

Abstract:
1. A cement manufacturing facility having a pollutant control system for removing pollutants from an exhaust process gas, said facility comprising: a pyroprocessing unit having a pyroprocessing kiln for forming clinker; a raw mill adapted to grind raw materials to form a raw mix; a raw mix conveyer adapted to convey said raw mix from said raw mill to said pyroprocessing unit; a first particulate control device conduit in fluid communication with the pyroprocessing unit and adapted to convey exhaust process gas from the pyroprocessing unit to a first particulate control device; a first particulate control device adapted to remove at least a portion of the pollutants contained with said exhaust process gas to form a de-dusted exhaust process gas; a first particulate conveyer adapted to convey the portion of the pollutants removed from the exhaust process gas by said first particulate control device to the raw mix conveyer; a second particulate control device conduit in fluid communication with the first particulate control device and adapted to convey said de-dusted exhaust process gas from the first particulate control device to a second particulate control device; a sorbent supply comprising a sorbent adapted to capture a targeted pollutant in said de-dusted exhaust process gas, said sorbent supply in fluid communication with the second particulate control device conduit and adapted to inject said sorbent into the second particulate control device conduit for contact with the de-dusted exhaust process gas to form a treated exhaust process gas; and a second particulate control device positioned downstream said sorbent supply and adapted to remove at least a portion of said sorbent and said targeted pollutants from said treated exhaust process gas to form a cleansed exhaust process gas.