Estimate the LOC of ethylene using Equations 6-15 and 6-16 in the textbook. Compare to the experimental value in Table 6-3

Example 6-6 shows that the LOC can be estimated using the equation LOC = 2 (LFL) (6-15) Equation 6-15 does not produce very good results. Hansen and Crowlll found that a better estimate of the LOC is given by LFL CLOCUFL LOC = 1 Cloc a = :) (UFL) (6-16) Table 6-3 Limiting Oxygen Concentrations (LOCs) Gas or vapor N/Air CO/Air 13 (150C) 14 (150C) 14.5 14.5 14.4 Natural gas Methane Ethane Propane n-Butane Isobutane n-Pentane Isopentane n-Hexane n-Heptane Ethylene Propylene 1-Butene Isobutylene Butadiene 3-Methyl-1-butene Benzene Toluene Styrene N/Air CO2/Air Gas or vapor 12.1 14.6 Kerosene 11 13.4 JP-1 fuel 11.4 14.3 JP-3 fuel 12.1 14.8 JP-4 fuel 12 14.8 12.1 14.4 n-Butyl chloride 12 14.5 11.9 14.5 Methylene chloride 11.5 14.5 10 11.7 Ethylene dichloride 11.5 14 11.6 14 Methyl chloroform 12 15 Trichloroethylene 10.4 13.1 Acetone 11.5 14 i-butanol 11.4 13.9 Carbon disulfid 9.5 Carbon monoxide 9.0 Ethanol 10 (150C) 10.5 (150C) 12 11.5 12 14 12 (100C) 19 (30C) 17 (100C) 13 11.5 (100C) 14 9 (100C) 11.5 NA 14 16.5 5.5 10.5 5.5 13 CO2/Air Gas or vapor Ethylbenzene Vinyltoluene Diethylbenzene Cyclopropane Gasoline (70/100) (100/130) (115/145) N/Air CO2/Air Gas or vapor 9.0 2-Ethyl butanol 9.0 Ethyl ether 8.5 Hydrogen 11.7 13.9 Hydrogen sulfide Methanol 12 15 Methyl acetate 12 15 12 14.5 Nz/Air 9.3 (150C) 10.5 5 7.5 13 5.2 11.5 10 12 13.5 11