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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 Lab. (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}
}

Patent:

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