Waste gas purification apparatus
US4076504A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 29, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Jul 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10K1/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A waste gas purification apparatus having an elongated vertical hollow furnace shaft adapted to receive pebbles therein with a waste gas inlet at the lower end with a pebble discharge means at said lower end. At the top of the shaft is a narrow exhaust gas duct with a pebble feed chute, a pebble charge device and a pebble recirculating tube extending from the discharge hoppers to the charge device. A blower is coupled to the gas inlet for force feeding waste gas through said gas inlet. At the upper end of the shaft is an inactive travel zone. Between the inactive travel zone and the lower shaft is an intermediate shaft with a temperature control chamber in parallel with said intermediate shaft. Pebbles move downwards in the shaft from the inactive travel zone to the discharge hoppers and are recirculated to the upper end while waste gas is fed to the lower end and travels up through the shaft, a portion of the gas passing through the temperature control chamber, the clean gas leaving the upper end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.