422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
129 | DF | CHEMICAL REACTOR {28} |
188 | DF | .~ Including plural reaction stages {2} |
196 | DF | .~.~ Including plural parallel reaction stages with each stage in form of a reaction tube {1} |
197 | .~.~.~ Tubular stages in single reaction chamber |