| 502 / | HD | CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING |
| 20 | DF | REGENERATING OR REHABILITATING CATALYST OR SORBENT {4} |
| 34 | DF | .~ Gas or vapor treating {5} |
| 38 | | .~.~ Treating with free oxygen containing gas {8} |
| 39 | DF | .~.~.~> And forming useful by-product |
| 40 | DF | .~.~.~> And adding heat by admixing solid heat carrier |
| 41 | DF | .~.~.~> In gaseous suspension (e.g., fluidized bed, etc.) {3} |
| 45 | DF | .~.~.~> Moving bed (e.g., vertically or horizontally, etc., moving bulk material) {3} |
| 49 | DF | .~.~.~> Plural distinct oxidation stages |
| 50 | DF | .~.~.~> Reactive gas treating after oxidation |
| 51 | DF | .~.~.~> Oxidation gas comprises essentially steam and oxygen |
| 52 | DF | .~.~.~> With control of oxygen content in oxidation gas |