The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Dec. 21, 1995
David L Hickman, Big Flats, NY (US);
Timothy V Johnson, Corning, NY (US);
David S Weiss, Corning, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
The instant invention is directed at an apparatus for removing VOC's from an exhaust gas stream comprised of the following: a heatable adsorber located in the exhaust stream capable of desorption; and, an oxidizer structure having a lightoff temperature and located in the exhaust stream downstream from the adsorber structure. One particular embodiment of the apparatus comprises the following two elements: (1) a resistively heatable adsorber possessing an activated carbon phase located in the exhaust stream and having a desorption temperature; and, (2) an electrically heatable catalyst structure having a lightoff temperature and located in the exhaust stream downstream from the adsorber structure. The method enabled as a result of the development of the aforementioned apparatus, i.e., a method for removing VOC's from an exhaust stream, involves two essential steps: (1) causing exhaust gases from an exhaust gas stream to flow through an adsorber structure and an oxidizer while adsorbing an amount of VOC's; and, (2) heating the oxidizer to its lightoff temperature and desorbing the adsorbed VOC's and thereafter flowing the desorbed compounds through the oxidizer whereupon they are oxidized. One particular embodiment involves two essential steps: (1) flowing VOC-containing exhaust gases through an adsorber structure having an activated carbon phase and an electrically heatable catalyzed structure while adsorbing an amount of VOC's; and, (2) heating the catalyzed structure to its lightoff temperature, desorbing the adsorbed VOC's and thereafter flowing the desorbed compounds through the catalyzed structure whereupon the desorbed VOC's are oxidized.