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Emission measurements from a urea-based SCR/oxi catalytic NO{sub x}/HC exhaust gas treatment system on board a diesel powered passenger ferry - operation after 12000 hours service

Technical Report:

Abstract

As an extension of a previous study NO{sub x} hydrocarbons (THC), NH{sub 3} and particulate bound NH{sub 4}{sup +}, SO{sub 4}{sup 2-}, and H{sup +} measurements have been carried out on the exhaust of a 2.5 MW medium speed diesel engine on boards `MS Aurora of Helsingborg` after 12100 hours service. Two operating cases were studied: * with the exhaust gases passing a urea based SCR/oxi catalyst system (NIXHAUST), and * with the exhaust gases by-passing the NIXHAUST system (baseline case). With normal urea dosage, the NIXHAUST system reduced NO{sub x} levels by 98% and THC by 85% with low NH{sub 3} slip (< 4 ppm). Even with lower urea dosages (90% and 80% of normal) the high reductions were maintained without NH{sub 3} slip penalties. In addition, no NH{sub 4}HSO{sub 4} was detected in the particulate fraction of the exhaust at the measurement site. In comparison with the results from earlier measurement campaigns after 800 and 6000 hours operation, individual emission factors have varied somewhat (engine wear, engine service etc.) but the reduction efficiencies with the NIXHAUST system obtained have not altered significantly. 11 refs, 2 figs, 8 tabs
Publication Date:
Jan 01, 1995
Product Type:
Technical Report
Report Number:
IVL-B-1171
Reference Number:
SCA: 540120; PA: SWD-95:007036; EDB-95:031167; SN: 95001320523
Resource Relation:
Other Information: PBD: Jan 1995
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION CONTROL; REDUCTION; AIR POLLUTION MONITORING; UREA; EMISSION; DIESEL ENGINES; SHIPS; EXHAUST GASES; NITROGEN OXIDES; HYDROCARBONS; SALTS; AMMONIA; 540120; CHEMICALS MONITORING AND TRANSPORT
OSTI ID:
10114439
Research Organizations:
Swedish Environmental Research Inst., Goeteborg (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE95737681; TRN: SE9507036
Availability:
OSTI; NTIS
Submitting Site:
SWD
Size:
13 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Cooper, D, and Peterson, Kjell. Emission measurements from a urea-based SCR/oxi catalytic NO{sub x}/HC exhaust gas treatment system on board a diesel powered passenger ferry - operation after 12000 hours service. Sweden: N. p., 1995. Web.
Cooper, D, & Peterson, Kjell. Emission measurements from a urea-based SCR/oxi catalytic NO{sub x}/HC exhaust gas treatment system on board a diesel powered passenger ferry - operation after 12000 hours service. Sweden.
Cooper, D, and Peterson, Kjell. 1995. "Emission measurements from a urea-based SCR/oxi catalytic NO{sub x}/HC exhaust gas treatment system on board a diesel powered passenger ferry - operation after 12000 hours service." Sweden.
@misc{etde_10114439,
title = {Emission measurements from a urea-based SCR/oxi catalytic NO{sub x}/HC exhaust gas treatment system on board a diesel powered passenger ferry - operation after 12000 hours service}
author = {Cooper, D, and Peterson, Kjell}
abstractNote = {As an extension of a previous study NO{sub x} hydrocarbons (THC), NH{sub 3} and particulate bound NH{sub 4}{sup +}, SO{sub 4}{sup 2-}, and H{sup +} measurements have been carried out on the exhaust of a 2.5 MW medium speed diesel engine on boards `MS Aurora of Helsingborg` after 12100 hours service. Two operating cases were studied: * with the exhaust gases passing a urea based SCR/oxi catalyst system (NIXHAUST), and * with the exhaust gases by-passing the NIXHAUST system (baseline case). With normal urea dosage, the NIXHAUST system reduced NO{sub x} levels by 98% and THC by 85% with low NH{sub 3} slip (< 4 ppm). Even with lower urea dosages (90% and 80% of normal) the high reductions were maintained without NH{sub 3} slip penalties. In addition, no NH{sub 4}HSO{sub 4} was detected in the particulate fraction of the exhaust at the measurement site. In comparison with the results from earlier measurement campaigns after 800 and 6000 hours operation, individual emission factors have varied somewhat (engine wear, engine service etc.) but the reduction efficiencies with the NIXHAUST system obtained have not altered significantly. 11 refs, 2 figs, 8 tabs}
place = {Sweden}
year = {1995}
month = {Jan}
}