Process for destroying suspended particles
US5444029A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Nov 30, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/514
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for regenerating an activated charcoal filter for a spray paint booth exhaust which includes the following steps: PA0 a passing a first gas flow of uncontaminated inlet air through the filter; PA0 preheating the first gas flow; PA0 combining the preheated first gas flow with additional uncontaminated air to form a preheated second gas flow at a predetermined temperature for achieving substantially complete desorption of the activated charcoal filter; PA0 recirculating the preheated second gas flow through the filter for desorbing filtered contaminants into the second gas flow; PA0 conveying the second gas flow to a heat contributing heat exchanging point for further preheating; PA0 pyrolytically oxidizing the further reheated gas flow, at a preselected elevated temperature, thereby oxidizing substantially all of the suspended particles therein; PA0 passing a resulting oxidized flow, at elevated temperature, to the heat exchanging point for cooling the oxidized gas flow and contributing exchanged heat to the second gas flow to achieve upstream further preheating; and PA0 discharging the cooled flow, devoid of noxious particles, to the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.