Gum and deposit formation from jet turbine and diesel fuels

Conference · Thu Sep 01 00:00:00 EDT 1983 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:6597743

Mayo, F R; Lan, B Y

The objective of this work is to determine the chemistry of deposit formation in hot parts of jet turbine and diesel engines and, thus, to predict and prevent deposit formation. Previous work in the field has been extensive, but a real understanding of deposit formation has been elusive. Work at SRI started on the basis that deposit formation from fuels must take place stepwise and is associated with autoxidation and the hydroperoxide produced. More recent work showed that in the absence of dissolved oxygen, higher temperatures are required for deposit formation. A recent report indicated that gum and deposit formation proceed mainly through oxidation products of the parent hydrocarbon, coupling of these products to dimeric, trimeric and higher condensation products (partly or wholly by radicals from hydroperoxides) and precipitation of insoluble products. The authors know of no information on how these first precipitates are converted to the ultimate, very insoluble, carbonaceous materials that cause engine problems. The present paper describes measurements of rates of oxidation and soluble gum formation in both pure hydrocarbons and mixed hydrocarbon fuels. Some patterns appear that can be largely explained on the basis of what is known about co-oxidations of hydrocarbon mixtures.

• Research Organization: SRI International, Menlo Park, California
• OSTI ID: 6597743
• Report Number(s): CONF-830814-
• Journal Information: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 28:5; Conference: 186. national meeting of the American Chemical Society, Washington, DC, USA, 28 Aug 1983
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DIESEL ENGINES
SCALING
DIESEL FUELS
COMBUSTION KINETICS
GUMS
DEPOSITION
JET ENGINE FUELS
TURBOJET ENGINES
COMBUSTION PRODUCTS
OXIDATION
PRECIPITATION
SOLUBILITY
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
ENGINES
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
KINETICS
PETROLEUM PRODUCTS
REACTION KINETICS
SEPARATION PROCESSES
023000* - Petroleum- Properties & Composition