Petroleum Products QC

LPG Components C3 & C4 estimation from its RVP When LPG consist of n-Propane and n-Butane mainly with traces of ethane and pentane plus as impurities, LPG Vapour Pressure   kPa at 37.8 C can be used for estimation of C3 & C4 in it.   Depending upon the ambient temperature, there requires different percentages of C3 and C4 in LPG for proper efficient use in applications. Thus, following information empowers users more knowledge of C3 and C4 from LPG Vapour Pressure   kPa at 37.8 C . The LPG derived from natural gas consists mainly Propane and Butane with minor impurities of Ethane and pentane. Similar Apps on Petroleum Calculations developed by RJ Patel- see here. Following table data taken from ASTM D 2598 can be used for estimation of LPG Composition. Constants of vapour pressure given above are empirical values for calculation purpose. A trendline from above data, with assumption of approximate 1 % (Ethane + C5 & above) is derived as %   C

Estimation of C3 & C4 percentage in LPG When LPG consist of n-Propane and n-Butane mainly with traces of ethane and pentane plus as impurities, LPG density at 15C can be used for estimation of C3 & C4 in it.   Depending upon the ambient temperature, there requires different percentages of C3 and C4 in LPG for proper efficient use in applications. Thus, following information empowers users more knowledge of C3 and C4 from LPG density at 15C. The LPG derived from natural gas consists mainly Propane and Butane with minor impurities of Ethane and pentane. Similar Apps on Petroleum Calculations developed by RJ Patel- see here. Following table data taken from ASTM D 2598 can be used for estimation of LPG Composition. Constants of Densities given above are empirical values for calculation purpose. A trendline from above data, with assumption of approximate 1 % (Ethane + C5 & above) is derived as given in following table:  % in Vol. %   C3 = 759