Exhaust treatment packaging apparatus, system, and method
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01N-003/035
F01N-003/36
출원번호
UP-0532613
(2006-09-18)
등록번호
US-7614215
(2009-11-23)
발명자
/ 주소
Warner, Jay
Pawson, Kenneth
Vasnier, Jean Marc
출원인 / 주소
Cummins Filtration IP, Inc.
대리인 / 주소
Kunzler & McKenzie
인용정보
피인용 횟수 :
9인용 특허 :
22
초록▼
An exhaust treatment packaging apparatus, system, and method includes an elongate exhaust gas passage comprising an inlet for the entrance of flowing exhaust gases and an outlet for the exit of the gases. A catalytic device comprising an inlet and an outlet completely or partially overlaps the pass
An exhaust treatment packaging apparatus, system, and method includes an elongate exhaust gas passage comprising an inlet for the entrance of flowing exhaust gases and an outlet for the exit of the gases. A catalytic device comprising an inlet and an outlet completely or partially overlaps the passage to reduce the length required for the system. The passage outlet is disposed adjacent the catalytic device inlet, and a flow connector connects the passage outlet to the catalytic device inlet. A particulate filter or other treatment device may be substituted for or added to the catalytic device. A doser disposed upstream of the passage doses an additive which evaporates, mixes, or otherwise undergoes change in the passage before reaching the catalytic device.
대표청구항▼
What is claimed is: 1. An exhaust treatment packaging apparatus, the apparatus comprising: a housing having an exhaust inlet and exhaust outlet; a first passage configured to house exhaust gases flowing in a first direction, the first passage being disposed within the housing; a first additive dose
What is claimed is: 1. An exhaust treatment packaging apparatus, the apparatus comprising: a housing having an exhaust inlet and exhaust outlet; a first passage configured to house exhaust gases flowing in a first direction, the first passage being disposed within the housing; a first additive doser coupled to the housing between the exhaust inlet and first passage, the first additive doser being configured to dose a first additive into the exhaust prior to being housed in the first passage; a second additive doser coupled to the housing between the exhaust inlet and first passage, the second additive doser being configured to dose a second additive into the exhaust prior to being housed in the first passage, the first additive being different than the second additive; a reverse-flow mechanism configured to receive the exhaust gases from the first passage and cause the exhaust gases to flow in a second direction substantially opposite the first direction, the reverse-flow mechanism being disposed within the housing; a second passage disposed adjacent the first passage, the second passage configured to receive the exhaust gases from the reverse-flow mechanism and house the exhaust gases flowing in the second direction, the second passage being disposed within the housing; a first exhaust treatment device disposed within the second passage, the first exhaust treatment device configured to utilize the first additive to treat the exhaust gases, wherein the first exhaust treatment device comprises an inlet in exhaust gas receiving communication with exhaust gases flowing in the second direction and an outlet in exhaust gas providing communication with the second passage to provide exhaust gases flowing in the second direction; a second exhaust treatment device disposed within the housing, the second exhaust treatment device configured to utilize the second additive to treat the exhaust gases; and an inlet module disposed within the housing and positioned between the exhaust inlet and the first passage, the inlet module being configured to receive exhaust from the exhaust inlet and provide exhaust to the first passage, wherein the first additive doser is configured to dose the first additive into the inlet module and the second additive doser is configured to dose the second additive into the inlet module, and wherein the inlet module comprises a cross-sectional area equal to or greater than a combined cross-sectional area of the first and second passages. 2. The apparatus of claim 1, wherein the reverse-flow mechanism comprises a first reverse-flow mechanism, the apparatus further comprising a second reverse-flow mechanism configured to receive the exhaust gases from the second passage, the second reverse-flow mechanism further configured to cause the exhaust gases to flow substantially in the first direction, and further comprising a third passage disposed adjacent the second passage, the third passage configured to receive the exhaust gases from the second reverse-flow mechanism and house the exhaust gases flowing substantially in the first direction. 3. The apparatus of claim 2, wherein the second passage is defined by an elongate second-passage housing that is racetrack-shaped in cross-section, with two curved ends and two substantially straight sides in cross-section, further comprising an elongate first-passage housing disposed on one of the straight sides of the second-passage housing, wherein the first passage is disposed between the first-passage housing and the second-passage housing, and further comprising an elongate third-passage housing disposed on the other straight side of the second-passage housing, and wherein the third passage is disposed between the first-passage housing and the third-passage housing. 4. The apparatus of claim 2, wherein the inlet module comprises a cross-sectional area equal to or greater than a combined cross-sectional area of the first, second, and third passages. 5. The apparatus of claim 1, wherein at least one of the first and second exhaust treatment devices comprises a flow-through catalytic treatment device. 6. The apparatus of claim 1, further comprising a particulate filter disposed within the housing. 7. The apparatus of claim 1, wherein the second passage is annular in cross-section and elongate such that its outer surface is cylindrical, and wherein the first passage is substantially cylindrical and disposed though the hole of the second passage. 8. The apparatus of claim 1, wherein the second passage is annular in cross-section and elongate such that its outer surface is cylindrical and the first passage is substantially cylindrical and disposed through the hole of the second passage, and wherein the housing being elongate, radially larger than the second passage, and co-extensive in length with the second passage, the axis of the housing being substantially parallel to the axis of the second passage, and further comprising a third passage disposed through the housing, the third passage being substantially parallel to the second passage. 9. The apparatus of claim 8, wherein the housing is substantially square in cross-section and the second passage is disposed wholly within the housing, and wherein the third passage is disposed through a corner of the housing. 10. The apparatus of claim 1, wherein the second passage is defined by an elongate second-passage housing that is racetrack-shaped in cross-section, with two curved ends and two substantially straight sides in cross-section, and further comprising an elongate first-passage housing disposed on one of the straight sides of the second-passage housing, and wherein the first passage is disposed between the first-passage housing and the second-passage housing. 11. The apparatus of claim 1, wherein the first exhaust treatment device comprises a selective catalytic reduction catalyst and the second exhaust treatment device comprises a first oxidation catalyst downstream of the selective catalytic reduction catalyst, the apparatus further comprising a second oxidation catalyst disposed within the inlet module, a particulate matter filter downstream of the selective catalytic reduction catalyst and second oxidation catalyst, and a third oxidation catalyst downstream of the particulate matter filter, wherein the particulate matter filter and third oxidation catalyst are disposed within the housing. 12. A method of treating exhaust gases, the method comprising: moving the exhaust gases such that they constitute an exhaust gas stream into an inlet module of a housing; dosing a first additive into the exhaust gas stream in the inlet module after entering the housing; dosing a second additive into the exhaust gas stream in the inlet module after entering the housing; urging the exhaust gas stream from the inlet module through a first passage positioned within the housing in a first direction after being dosed with the first and second additives; reversing the direction of the exhaust gas stream; urging the exhaust gas stream through a treatment passage positioned within the housing and a first exhaust treatment component positioned within the treatment passage in a second direction substantially opposite to the first direction, wherein the treatment passage adjoins the first passage along an axial length of the exhaust treatment component, and wherein the inlet module comprises a cross-sectional area equal to or greater than a combined cross-sectional area of the first passage and treatment passage; treating the exhaust gas stream in the first exhaust treatment component using the first additive; urging the exhaust gas stream through a second exhaust treatment component positioned within the housing and downstream of the first exhaust treatment component; and treating the exhaust gas stream in the second exhaust treatment component using the second additive. 13. The method of claim 12, further comprising reversing the direction of the exhaust gas stream a second time and urging the exhaust gases through a third passage substantially in the first direction. 14. The method of claim 12, further comprising catalytically treating the exhaust gas stream in the treatment passage. 15. The method of claim 12, wherein the first additive is urea and the first exhaust treatment component includes a selective catalytic reducer, the method further comprising convening at least a portion of the urea to ammonia in the first passage and using the ammonia to enhance treatment of the exhaust gases in the selective catalytic reducer. 16. The method of claim 15, wherein the second additive is a liquid hydrocarbon and the second exhaust treatment component is an oxidation filter, the method further comprising evaporating at least a portion of the liquid hydrocarbon in the first passage. 17. The method of claim 12, further comprising filtering the exhaust gas stream. 18. An exhaust gas treatment packaging apparatus, the apparatus comprising: an exhaust inlet section comprising a first catalytic device; an elongate exhaust gas passage in exhaust receiving communication with the exhaust inlet section, the elongate exhaust gas passage comprising an inlet for the entrance of flowing exhaust gases and an outlet for the exit of the gases, wherein exhaust gases flow through the elongate exhaust gas passage in a first direction; a second catalytic device comprising an inlet and an outlet, the second catalytic device disposed co-extensive with the passage and the passage outlet disposed adjacent the second catalytic device inlet; a flow connector connecting the passage outlet to the second catalytic device inlet, wherein the flow connector is configured to facilitate exhaust gas flow through the second catalytic device in a second direction opposite the first direction; a first additive doser coupled to the exhaust inlet section and communicable in first additive dosing communication with exhaust gas within the exhaust inlet section; a second additive doser coupled to the exhaust inlet section and communicable in second additive dosing communication with exhaust gas within the exhaust inlet section, the first additive being different than the second additive; a third catalytic device downstream of the first and second catalytic devices; a particulate matter filter downstream of the first, second, and third catalytic devices; a fourth catalytic device downstream of the particulate matter filter; a housing within which the exhaust inlet section, elongate exhaust gas passage, first catalytic device, second catalytic device, flow connector, third catalytic device, particulate matter filter, and fourth catalytic device are housed; wherein the second catalytic device is configured to utilize the first additive to treat exhaust gases and the first, third, and fourth catalytic devices are configured to utilize the second additive to treat exhaust gases. 19. The apparatus of claim 18, wherein the first and second additive dosers are disposed upstream of the passage. 20. The apparatus of claim 18, wherein the exhaust inlet section comprises a cross-sectional area equal to or greater than a combined cross-sectional area of the elongate exhaust gas passage and second catalytic device inlet. 21. A diesel exhaust gas stream treatment system, the system comprising: a housing; first, second, and third elongate exhaust gas channels disposed in parallel arrangement within the housing, each channel comprising an inlet end and an outlet end, the outlet end of the first channel being connected to the inlet end of the second channel and the outlet end of the second channel being connected to the inlet end of the third channel such that the gas stream travels down the first channel in a first direction, down the second channel in a second direction, the second direction being substantially the opposite of the first direction, and down the third channel in the first direction; a urea doser coupled to the housing and configured to inject urea into the first elongate exhaust gas channel; a liquid hydrocarbon doser coupled to the housing and configured to inject liquid hydrocarbon into the first elongate exhaust gas channel; a selective catalytic reduction catalyst disposed in the second channel and through which the exhaust gas stream flows in the second direction, the selective catalytic reduction catalyst configured to utilize urea injected into the exhaust gas stream by the urea doser to treat the exhaust gas stream; and an oxidation filter disposed within the housing, the oxidation filter configured to utilize liquid hydrocarbon injected into the exhaust gas stream by the liquid hydrocarbon doser to treat the exhaust gas stream; wherein the second elongate exhaust gas channel has a substantially racetrack-shaped cross-section with two curved ends and two substantially straight sides in cross-section, the first elongate exhaust gas channel being coextensive with a respective one of the two substantially straight sides, and the third elongate exhaust gas channel being coextensive with the other of the two substantially straight sides, and wherein the combined outer perimeters of the first, second, and third elongate exhaust gas channels form a substantially square shape in cross-section. 22. The system of claim 21, wherein the selective catalytic reduction catalyst comprises a doughnut-type flow-through catalytic device, and wherein the first channel is disposed through the hole in the selective catalytic reduction catalyst. 23. The system of claim 21, wherein the housing is substantially square in cross-section and the third channel is disposed in a corner of the square. 24. The system of claim 21, wherein the selective catalytic reduction catalyst comprises a racetrack-type flow-through catalytic device. 25. The system of claim 24, wherein the combination of the selective catalytic reduction catalyst, the first channel and the third channel is substantially square in cross-section.
Winfried Dolling DE; Reinhard Latsch DE; Wieland Mathes DE; Ronald Neufert DE; Rainer Tost DE; Dietmar Weisensel DE; Klaus Wenzlawski DE; Jurgen Zurbig DE, Process and apparatus for the catalytic elimination of a pollutant from the exhaust gas from a combustion installation.
Raimund Muller DE; Lothar Hofmann DE; Kurt Schardt DE; Wieland Mathes DE, Process and device for the catalytic cleaning of the exhaust gas from a combustion plant.
Bruza, Philip Stephen; Meffert, Darrel Henry; Pollard, Michael James; Boland, Timothy John; Weber, John Roger; Shah, Ronak Dhanendrakumar; Meyer, Robert Lee; Aleksonis, Jonas Arunas, Exhaust treatment device having flow-promoting end caps.
Bruza, Philip Stephen; Meffert, Darrel Henry; Pollard, Michael James; Boland, Timothy John; Weber, John Roger; Shah, Ronak Dhanendrakumar; Meyer, Robert Lee; Aleksonis, Jonas Arunas, Exhaust treatment device having flow-promoting end caps.
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