Exhaust after-treatment system for the reduction of pollutants from diesel engine exhaust and related method
AssigneeConverter Technology, Inc.
InventorRefaat A. Kammel
Life of this patent
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Abstract
Exhaust after-treatment system for the reduction of particulate, NOx, HC, CO, VOCs, nano-particle count and sulfur dioxide from diesel exhaust. System employs diesel oxidation catalyst, exhaust cooling system, particulate converter, soot collection chamber, soot processing drum, EGR and water scrubber.
Claims16
A diesel exhaust after-treatment system for the cleanup of regulated and unregulated pollutants from an exhaust of a diesel engine, the system comprising:
- a diesel particulate converter having an agglomerator for the agglomeration of particulate matter and a separator for the separation of particulate matter, the agglomerator constructed of composite wire mesh media;
- a soot collection chamber for collecting and retaining entrapped soot;
- an exhaust cooling system for cooling the exhaust;
- and
- wherein the exhaust-cooling system includes a radiation mode cooling section, a first convection mode cooling section utilizing a source of ambient air to cool the exhaust, and a second convection mode cooling section utilizing a source of liquid to cool the exhaust, the radiation-mode cooling section includes one or more pipes having larger surface area than conventional piping and a blackened outside surface, for maximum cooling effect.
An exhaust after-treatment system for the clean up of regulated and unregulated pollutants from the exhaust of a diesel engine, the system comprising:
- diesel particulate converter having a wire mesh media for the agglomeration of particulate matter;
- an air pulsation system in fluid communication with the diesel particulate converter;
- a sensor for sensing a pressure drop across the particulate converter and generating a control signal in response to the pressure drop having a predetermined value;
- an electronic control module (ECU) for activating the air pulsation system to remove particulate matter from the wire mesh media;
- an incinerator;
- and
- wherein an air pulsation system is a reverse pulse jet system including a compressed air tank, a pulse valve and passive sliding door within the housing of the particulate converter;
- and
- wherein a passive sliding door assembly is activated through the incoming pulsed air causing the sliding door to close, that such action will force all of the incoming pulsed air to go through the quasi agglomeration/filtration media to ensure effective soot blow off, that such sliding door will return to the open position at the conclusion of pulsation through a compression spring action.
A diesel exhaust after-treatment system for the cleanup of regulated and unregulated pollutants from an exhaust of a diesel engine, the system comprising:
- a diesel particulate converter having an agglomerator for the agglomeration of particulate matter and a separator for the separation of particulate matter, the agglomerator constructed of composite wire mesh media;
- and
- a soot collection chamber for collecting and retaining entrapped soot;
- wherein the diesel particulate converter for the agglomeration and separation of particulate matter from the exhaust includes:
- a housing;
- a centrifugal separator having a core pipe radially centered in the housing, the core pipe having a plurality of windows for capturing clean exhaust streams;
- and
- a plurality of helical augers extending from the core to the agglomerator such that the exhaust enters the centrifugal separator at an upstream end, is then forced into a cyclonic helical motion and exits at a downstream end;
- wherein the centered core pipe captures and collects clean exhaust layers in a progressive manner as such clean layers develop through the plurality of windows;
- and
- wherein the windows are configured to have openings extending from a middle of the flow channel toward the auger, the openings stopping short from the auger, thereby preventing re-entry of fugitive particulates caused by swirl phenomenon.
Dependencies are inferred from the claim text.