A fabric filter system (26) useful for filtering a polluted gas to achieve a cleaned gas with a relatively low particulate matter content, including during a period of time from fabric filter bag (32) cleaning up until dust cake formation on the fabric filter bag (32). For such purpose, the subject fabric filter system (26) is equipped with a polluted gas flow damper system (100) to control polluted gas velocity through the fabric filter system (26), particularly for a relatively reduced polluted gas velocity during the period of time from fabric filter bag (32) cleaning up until dust cake formation on the fabric filter bag (32).
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