Corning Incorporated

Xinfeng Xing

Huiqing Wu

Jianguo Wang

Dale Robert Powers

Cai Liu

Thomas Jean Glasson

Dana Craig Bookbinder

Pushkar Tandon

Douglas Munroe Beall

Mark Alan Lewis

Todd Parrish St Clair

Thorsten Rolf Boger

Danhong Zhong

William Peter Addiego

Curtis Robert Fekety

Joseph Henry Citriniti

Michael George Shultz

Fei Xia

Christopher Lane Kerr

Roychelle Sheneen Ingram-Ogunwumi

Stefan Wolfgang Kramel

Xiaoran Fang

Shyam Prasad Mudiraj

Jason Daniel Steadman

Stefan Kramel

Apparatus and methods are disclosed which are capable of being used to determine filtration efficiency of a filter body even in a clean state. Methods of determining a filtration efficiency of a filter including forcing an inlet flow comprised of a gas (such as air) flow into the inlet end of the filter at a set flow rate, introducing particles such as smoke particles into the inlet flow, and optically counting the number of particles entering and exiting the filter during a sampling event, such as with diffraction based optical particle counters positioned upstream and downstream of the filter. Preferably the gas flow is a soot-free flow stream which does not load the honeycomb filter body with contaminants that need to be removed or burned out. The filter body can thus remain in an essentially clean state even after testing its filtration efficiency.

Offline measurement of honeycomb body filtration efficiency

A honeycomb body () having a porous ceramic honeycomb structure with a first end (), a second end (), and a plurality of walls () having wall surfaces defining a plurality of inner channels (). A porous material is disposed on one or more of the wall surfaces of the honeycomb body (). A method for forming a honeycomb body () includes depositing a porous inorganic material on a ceramic honeycomb body () and binding the porous inorganic material to the ceramic honeycomb body () to form the porous layer.

Honeycomb body with porous material

A method for applying a surface treatment to a plugged honeycomb body comprising porous wall includes: mixing particles of an inorganic material with a liquid vehicle and a binder material to form a liquid-particulate-binder stream; mixing the liquid-particulate-binder stream with an atomizing gas, directing the liquid-particulate-binder stream into an atomizing nozzle thereby atomizing the particles into liquid-particulate-binder droplets comprised of the liquid vehicle, the binder material, and the particles; conveying the droplets toward the plugged honeycomb body by a gaseous carrier stream, wherein the gaseous carrier stream comprises a carrier gas and the atomizing gas; evaporating substantially all of the liquid vehicle from the droplets to form agglomerates comprised of the particles and the binder material; depositing the agglomerates onto the porous walls of the plugged honeycomb body; wherein the deposited agglomerates are disposed on, or in, or both on and in, the porous walls.

Methods of making honeycomb bodies having inorganic filtration deposits

Filtration articles herein exhibit excellent filtration efficiency and pressure drop before and after water durability testing. The articles comprise: a honeycomb filter body; inorganic deposits disposed within the honeycomb filter body at a loading of less than or equal to 20 grams of the inorganic deposits per liter of the honeycomb filter body. The inorganic deposits are comprised of refractory inorganic nanoparticles bound by a high temperature binder comprising one or more inorganic components. At least a portion of the inorganic deposits form a porous inorganic network over portions of inlet walls of the honeycomb filter body.

A honeycomb body having a porous ceramic honeycomb structure with a first end, a second end, and a plurality of walls having wall surfaces defining a plurality of inner channels. A highly porous layer is disposed on one or more of the wall surfaces of the honeycomb body. The highly porous layer has a porosity greater than 90%, and has an average thickness of greater than or equal to 0.5 &#x3bc;m and less than or equal to 10 &#x3bc;m. A method of making a honeycomb body includes depositing a layer precursor on a ceramic honeycomb body and binding the layer precursor to the ceramic honeycomb body to form the highly porous layer.

Method of evaluating filtration performance of a plugged honeycomb body

A particulate filter having a porous ceramic honeycomb structure with a first end, a second end, and a plurality of walls having wall surfaces defining a plurality of inner channels. Filtration material deposits are disposed on one or more of the wall surfaces of the honeycomb body. The highly porous deposits provide durable high clean filtration efficiency with small impact on pressure drop through the filter.

Honeycomb body and particulate filter comprising a honeycomb

Honeycomb body and particulate filter comprising a honeycomb body

Growing community of inventors

Shanghai, China

Xinfeng Xing