Accession Number : AD0704503

Title :   FACTORS AFFECTING COMBUSTION OF ORGANIC MATERIALS IN HIGH-PRESSURE ENVIRONMENTS: SPRAY IGNITION OF ALIPHATIC HYDROCARBONS I.

Descriptive Note : Research and development rept.,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT LAB ANNAPOLIS MD

Personal Author(s) : Brown,Samuel H. , Jr

Report Date : APR 1970

Pagination or Media Count : 27

Abstract : Samples of n-hexane, n-hexadecane, and squalane were used in initial studies of factors affecting combustion of aliphatic hydrocarbons in a high-pressure injection system. The factors considered were temperature, sample size, pressure, catalytic effects, and chemical structure. Ignition delay as a function of these factors was studied. Information on spontaneous ignition (self-ignition) temperatures also is presented. Ignition delay as a function of temperature was found to be the most significant measurement. Relative activation energies were calculated from the data by the Arrhenius Theory of Reaction Rates. Reactant sample size was found to affect the ignition delay at specified pressures and temperature. Increasing the sample injection pressure and leaving the reactor tube pressure constant decreased the ignition delay under the condition studied. It was shown that for these aliphatic hydrocarbons, ignition delay increased as their molecular weight increased. (Author)

Descriptors :   (*HYDROCARBONS, *IGNITION), (*COMBUSTION, HYDROCARBONS), REACTION KINETICS, HIGH PRESSURE, CATALYSTS, ALIPHATIC COMPOUNDS

Subject Categories : Physical Chemistry
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE