The formation of aromatics and PAH's in laminar flames

Conference · Thu Apr 01 04:00:00 EST 1999

OSTI ID:13086

Marinov, N M ^[1]; Pitz, W J; Westbrook, C K

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1. LLNL

The formation of aromatics and PAH's is an important problem in combustion. These compounds are believed to contribute to the formation of soot whose emission from diesel engines is regulated widely throughout the industrial world. Additionally, the United States Environmental Protection Agency regulates the emission of many aromatics and PAH species from stationary industrial burners, under the 1990 Clean Air Act Amendments. The above emission regulations have created much interest in understanding how these species are formed in combustion systems. Much previous work has been done on aromatics and PAH's. The work is too extensive to review here, but is reviewed in Reference 1. A few recent developments are highlighted here. McEnally, Pfefferle and coworkers have studied aromatic, PAH and soot formation in a variety of non-premixed flames with hydrocarbon additives [2-4]. They found additives that contain a C5 ring increase the concentration of aromatics and soot [4]. Howard and coworkers have studied the formation of aromatic and PAH's in low pressure, premixed, laminar hydrocarbon flames. They found the cyclopentadienyl radical to be a key species in naphthalene formation in a fuel-rich, benzene/Ar/O2 flame [5].

• Research Organization: Lawrence Livermore National Lab., CA (US)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EE) (US)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 13086
• Report Number(s): UCRL-JC-133569; EE0301000; EE0301000
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
33 ADVANCED PROPULSION SYSTEMS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ADDITIVES
AROMATICS
BURNERS
CLEAN AIR ACTS
COMBUSTION
DIESEL ENGINES
FLAMES
HYDROCARBONS
NAPHTHALENE
RADICALS
REGULATIONS
US EPA