NOx reduction in diesel fuel flames by additions of water and CO{sub 2}

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:334049

Li, S C ^[1]

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1. Univ. of California, San Diego, La Jolla, CA (United States)

Natural gas has the highest heating value per unit mass (50.1 MJ/kg, LHV) of any of the hydrocarbon fuels (e.g., butane, liquid diesel fuel, gasoline, etc.). Since it has the lowest carbon content per unit mass, combustion of natural gas produces much less carbon dioxide, soot particles, and oxide of nitrogen than combustion of liquid diesel fuel. In view of anticipated strengthening of regulations on pollutant emissions from diesel engines, alternative fuels, such as compressed natural gas (CNG) and liquefied natural gas (LNG) have been experimentally introduced to replace the traditional diesel fuels in heavy-duty trucks, transit buses, off-road vehicles, locomotives, and stationary engines. To help in applying natural gas in Diesel engines and increasing combustion efficiency, the emphasis of the present paper is placed on the detailed flame chemistry of methane-air combustion. The present work is the continued effort in finding better methods to reduce NO{sub x}. The goal is to identify a reliable chemical reaction mechanism for natural gas in both premixed and diffusion flames and to establish a systematic reduced mechanism which may be useful for large-scale numerical modeling of combustion behavior in natural gas engines.

• Research Organization: Dept. of Energy Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Transportation Technologies, Washington, DC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG03-87ER13685
• OSTI ID: 334049
• Report Number(s): CONF-970799--PROC.; ON: DE99000798
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
33 ADVANCED PROPULSION SYSTEMS
AIR POLLUTION ABATEMENT
CARBON DIOXIDE
COMBUSTION KINETICS
DIESEL ENGINES
FLAMES
NATURAL GAS
NITROGEN OXIDES
WATER VAPOR