DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method for reducing pressure drop through filters, and filter exhibiting reduced pressure drop

Abstract

Methods for generating and applying coatings to filters with porous material in order to reduce large pressure drop increases as material accumulates in a filter, as well as the filter exhibiting reduced and/or more uniform pressure drop. The filter can be a diesel particulate trap for removing particulate matter such as soot from the exhaust of a diesel engine. Porous material such as ash is loaded on the surface of the substrate or filter walls, such as by coating, depositing, distributing or layering the porous material along the channel walls of the filter in an amount effective for minimizing or preventing depth filtration during use of the filter. Efficient filtration at acceptable flow rates is achieved.

Inventors:
;
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1164034
Patent Number(s):
8889221
Application Number:
13/915,014
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
DOE Contract Number:  
AC0500OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 36 MATERIALS SCIENCE

Citation Formats

Sappok, Alexander, and Wong, Victor. Method for reducing pressure drop through filters, and filter exhibiting reduced pressure drop. United States: N. p., 2014. Web.
Sappok, Alexander, & Wong, Victor. Method for reducing pressure drop through filters, and filter exhibiting reduced pressure drop. United States.
Sappok, Alexander, and Wong, Victor. Tue . "Method for reducing pressure drop through filters, and filter exhibiting reduced pressure drop". United States. https://www.osti.gov/servlets/purl/1164034.
@article{osti_1164034,
title = {Method for reducing pressure drop through filters, and filter exhibiting reduced pressure drop},
author = {Sappok, Alexander and Wong, Victor},
abstractNote = {Methods for generating and applying coatings to filters with porous material in order to reduce large pressure drop increases as material accumulates in a filter, as well as the filter exhibiting reduced and/or more uniform pressure drop. The filter can be a diesel particulate trap for removing particulate matter such as soot from the exhaust of a diesel engine. Porous material such as ash is loaded on the surface of the substrate or filter walls, such as by coating, depositing, distributing or layering the porous material along the channel walls of the filter in an amount effective for minimizing or preventing depth filtration during use of the filter. Efficient filtration at acceptable flow rates is achieved.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {11}
}

Works referenced in this record:

Diesel particulate trap
patent, May 1982


Ceramic-made filter and process for production thereof
patent, January 2005


Porous ceramic filter and method for producing same
patent-application, January 2002


Ceramic filter and filter device
patent-application, October 2002


Catalytic soot filter and use thereof in treatment of lean exhaust gases
patent-application, April 2004


Low pressure drop coated diesel exhaust filter
patent-application, June 2007


Microwave sensing for determination of loading of filters
patent-application, March 2008


Porous Honeycomb Filter
patent-application, April 2008


Honeycomb Filter
patent-application, June 2010


Method For Reducing Pressure Drop Through Filters, And Filter Exhibiting Reduced Pressure Drop
patent-application, October 2010


A Novel Accelerated Aging System to Study Lubricant Additive Effects on Diesel Aftertreatment System Degradation
journal, June 2008


Lubricant-Derived Ash Properties and Their Effects on Diesel Particulate Filter Pressure-Drop Performance
journal, November 2010


Study on Wall Pore Structure for Next Generation Diesel Particulate Filter
conference, April 2008


Ash Effects on Diesel Particulate Filter Pressure Drop Sensitivity to Soot and Implications for Regeneration Frequency and DPF Control
journal, April 2010


Characteristics and Effects of Ash Accumulation on Diesel Particulate Filter Performance: Rapidly Aged and Field Aged Results
conference, April 2009


Characteristics and Effects of Lubricant Additive Chemistry on Ash Properties Impacting Diesel Particulate Filter Service Life
journal, April 2010


    Works referencing / citing this record:

    System and method for measuring retentate in filters
    patent, July 2016


    Method and system for controlling filter operation
    patent, July 2016


    Method of coating a substrate with a catalyst component
    patent, September 2015