Process for removing soot particles from the exhaust gas of internal combustion engine comprises feeding gas through collecting element, and holding and/or fluidizing until there is sufficient reaction with nitrogen dioxide in exhaust gas

摘要

Process for removing soot particles from the exhaust gas of an internal combustion engine comprises feeding the gas through a collecting element which is provided with a number of deviations (15, 16) and/or fluidizing and quiet zones; and holding and/or fluidizing a part of the particles until there is sufficient reaction with the nitrogen dioxide in the exhaust gas for further removal of the collected particles. An Independent claim is included for a collecting element for collecting soot particles from an internal combustion engine exhaust gas comprising flow passages (13) structured to produce deviations or fluidizing zones and quiet zones. Preferred Features: The collecting element has a mixing element for uniformly distributing a reductant, especially urea. One part if the walls of the flow passages of the collecting element is coated with a washcoat of aluminum.