Combination particulate and acid-neutralizing filter

摘要

The present invention provides a filter apparatus for use in removing impurities and acids contained in a fluid that includes a particulate filter (8) and an acid-neutralizing filter (15). Preferably, the particulate filter (8) and the acid-neutralizing filter (15) are positioned within a housing (1). A conduit (16) having a pressure reduction section (51) is arranged to create a pressure differential across the acid-neutralizing filter (15) such that a portion of the fluid to be filtered by the filter apparatus passes through the acid-neutralizing filter (15).