Corning Incorporated

Calgon Carbon Corporation

Timothy V Johnson

David L Hickman

John P Day

Kishor Purushottam Gadkaree

David S Weiss

J Paul Day

Russell C Wooten

Paul E Vargas

Jerald L Mestemaker

B R Thakker

Andrew N Andrascik

Ronald D Quinn

Roderick O Koehler

Richard F Smith

Randel W Gulley

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.

Apparatus for removing VOC's from an exhaust gas stream

A device for purifying a workstream of contaminants and method of making. One device is made of an inorganic monolithic porous particulate filter and a continuous uninterrupted coating of activated carbon impregnated into the pores of the filter. Preferably the filter has inlet and outlet faces, and a multiplicity of cells separated by porous walls and extending longitudinally and mutually parallel therethrough from inlet to outlet end, a portion of the total number of cells being plugged at the inlet end face, and the remaining portion of the total number of cells being plugged at the outlet end face of the device. Another device can be made entirely of activated carbon having the multicellular structure. A workstream containing contaminants is passed through the device to cause retention of the contaminants. The device can have electrically conducting mechanism for conducting electric current therethrough for removal of the contaminants and regeneration of the device.

Device for removal of contaminants from fluid streams

A regeneratable adsorber for adsorbing adsorbable contaminates from a fluid stream containing same is disclosed. The adsorber includes an adsorber housing in which there is a fluid stream inlet and a fluid stream outlet. The adsorber also includes a plurality of adsorber chambers which are arranged in an indexable wheel configuration. Each chamber includes an electrically conductive adsorbent, such as a monolithic activated carbon, a set of electrical conductors in contact with the adsorbent, and an inlet and outlet. A chamber is either in contact with a source of contaminate fluid or a desorbent fluid used to regenerate the adsorber. The adsorber includes selectively indexed chambers for adsorption or desorption to provide continuous contaminate adsorption and regeneration.

Method and apparatus for continuous adsorption of adsorbable

Porous sintered ceramic material having bulk analytical composition, by weight, of 74-79% alumina and the balance being silica optionally with other oxide and/or impurities naturally occurring from the batch materials, and having a phase composition, by weight, of 50-75% mullite, 23-45% corundum, 0-6% cristobalite and the balance being substantially 2-10% amorphous alumina-silica based phase. Honeycomb structure, molten metal filter and catalytic converter made from the material.

Material, structure, filter and catalytic converter

A molten metal filter is disclosed having a carbon or carbon-thermite coating that reduces thermal shock to the filter, and protects the filter from corrosion from the metal or components and impurities in the metal, and prevents metal from freezing in the filter. A molten metal assembly suitable for casting molten metal is disclosed which comprises a filter for molten metal and means for molten metal flow passage leading through the filter. The means have surfaces defining a molten metal path. The filter has a coating of carbon or carbon in intimate contact with a thermite material on the surface of the filter. A process is disclosed for filtering molten metal which comprises passing molten metal through the above described coated filter.

Coated molten metal filters

Thermite coatings are applied to molten metal filters and the environs, to produce longer lived filters that can be utilized in harsher environments. The coatings employ exothermic, redox, and combination reactions to produce the beneficial effects.

Growing community of inventors

Corning, NY, United States of America

Timothy V Johnson