422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
129 | DF | CHEMICAL REACTOR {28} |
168 | DF | .~ Waste gas purifier {5} |
177 | DF | .~.~ Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc. {4} |
179 | .~.~.~ Fixed bed with resilient or differential thermal expansion compensating bed support means |