Petroleum Products QC

A good quantity of petroleum products is handled in bbls and small containers. The product quantity is required to be accounted in these containers at 29.5 deg C.  So the exercise demand to convert volume from observed temperature to volume at 29.5 deg C. The practical situation require for example if the density observed is say 832.5 Kg/Cu. M at 24 C, what is the converted density at 29.5 C? Usual practice is first convert density to 15 C and then work out density conversion to 29.5 C using ASTM tables 53B. This require a special skill and there is always probability of error in conversion.  The answer is provided in a single step, in the app developed here. Similar Apps on Petroleum Calculations developed by RJ Patel- see here. Earlier,  various Density conversion Apps and procedures are blogged for petroleum products and crude Oil.  Here now, an app is presented for density conversion from observed temperature to the required temperature of 29.5 C. Th...

A practical situation like designing of pipeline, pumps etc in oil industry require the density of petroleum products at the likely temperature  at which the products will flow. Thus the exercise is when the density is taken at observed temperature say 19 deg C and the what will be the converted density at say 27 deg C? The answer is provided in a single step, in the app developed here. Similar Apps on Petroleum Calculations developed by RJ Patel- see here.   Earlier,  various Density conversion Apps and procedures are blogged for petroleum products and crude Oil.  Here now, an app is presented for density conversion from observed temperature to any desired temperature say 15 C or 20 C or 27 C or  any temperature T. The conversion uses relationships from ASTM 53b tables for petroleum products.  You can obtain this app by writing to rjpatelioc2014@gmail.com. Author's Profile  clik here.             ...

This App for calculated Cetane Index by Four Variable Equation  provides a means for estimating the ASTM cetane number  (Test Method D613) of distillate fuels from density and  distillation recovery temperature measurements. The value  computed from the equation is termed the Calculated Cetane  Index by Four Variable Equation. Similar Apps on Petroleum Calculations developed by RJ Patel- see here. Procedure B   is to be used for Specification ASTM D975, Grade No. 2–D S500. For Procedure A please click here. CCI as per ASTM D4737 Procedure B Centigrade BP The Calculated Cetane Index by Four Variable Equation  is not an optional method for expressing ASTM cetane number.  It is a supplementary tool for estimating cetane number when  a result by Test Method D613 is not available and if cetane  improver is not used. As a supplementary tool, the Calculated  Cetane Index by Four Variable equation must be used with ...

This App for calculated Cetane Index by Four Variable Equation  provides a means for estimating the ASTM cetane number  (Test Method D613) of distillate fuels from density and  distillation recovery temperature measurements. The value  computed from the equation is termed the Calculated Cetane  Index by Four Variable Equation. Similar Apps on Petroleum Calculations developed by RJ Patel- see here. Procedure A is to be used for Specification D975,  Grades No. 1–D S15, No. 1–D S500, No. 1–D S5000, No. 2–D  S15, No. 2–D S5000, and No. 4–D. CCI - Procedure A - D4737  MBP in C The Calculated Cetane Index by Four Variable Equation  is not an optional method for expressing ASTM cetane number.  It is a supplementary tool for estimating cetane number when  a result by Test Method D613 is not available and if cetane  improver is not used. As a supplementary tool, the Calculated  Cetane Index by Four Variable equation...

This App is based on ASTM D976, covers the Calculated Cetane Index which directly estimates the ASTM Cetane Number of distillate fuels from API Gravity and mid boiling point. Second part of the App which has density at 15 C, (gm/mL) and mid boiling point in deg C. Similar Apps on Petroleum Calculations developed by RJ Patel- see here. CCI API Gravity & Mid Boiling Point F CCI Density 15C and Mid Boiling Point C The Calculated Cetane Index is not an optional method for expressing ASTM cetane number. It is a supplementary tool to estimate cetane number when used with due regard for its limitations. The Calculated Cetane Index formula is particularly applicable to straight-run fuels, catalytically cracked stocks, and blends of the two. Test Method D4737 is the preferred method as estimator of cetane number and a separate App has been created based on this four variable CCI method. The Calculated Cetane Index is one tool available for estimating ASTM c...

Earlier following posts detailing the methodology of estimating approximate  C3 and C4 components of LPG from density@15C and RVP figures are published recently. Estimation of C3 & C4 percentage in LPG from Density & Estimation of C3 & C4 percentage in LPG from Vapor Pressure Similar Apps on Petroleum Calculations developed by RJ Patel- see here. Now an App based on above and ASTM D2598 is published. Steps : 1)  Enter Density at 15 C or/and Vapor Pressure @ 37.8C of LPG 2)  Read below  C3 and C4 with assumption of C2 and C5 impurities =1 % V. Prediction of C3 & C4 components of LPG Mobile App Prediction of  C3 - C4 Components of LPG - App as seen in  Laptop/PC You can see other Apps of LPG based on ASTM D2598 at following: An App for Calculation of Vapor pressure of Liquefied Petroleum (LP) Gases from Compositional Analysis based on ASTM D2598.    An App for Calculation of Relative Density...

The App is based on ASTM D2598 standard. This Apps covers, by compositional analysis, the approximate determination of  Motor Octane Number (MON)  of commercial propane, special-duty propane, commercial propane/butane mixtures, and commercial butane as per ASTM D2598 - Standard Practice for Calculation of Certain Physical Properties of Liquefied pet roleum (LP) Gases from Compositional Analysis. Similar Apps on Petroleum Calculations developed by RJ Patel- see here. The composition of sample of LPG is obtained by using test method D2163 or other acceptable method. From the analysis (expressed in liquid volume percent) the  Relative Density at 15.6C (60F)  of the sample may be determined.   Steps :  a) Enter the Volume % of individual components of Gas.  Ensure total % of all the gases is 100. b) Read below in last cell -  Motor Octane Number (MON)  of the sample. LPG MON APP Mobile Conversion of a composi...

The App is based on ASTM D2598 standard. This Apps covers, by compositional analysis, the approximate determination of Relative Density at 15.6C (60F) of commercial propane, special-duty propane, commercial propane/butane mixtures, and commercial butane as per ASTM D2598 - Standard Practice for Calculation of Certain Physical Properties of Liquefied pet roleum (LP) Gases from Compositional Analysis. Apps developed on other Petroleum Calculations - see here. The composition of sample of LPG is obtained by using test method D2163 or other acceptable method. From the analysis (expressed in liquid volume percent) the  Relative Density at 15.6C (60F)  of the sample may be determined.   Steps :  a) Enter the Volume % of individual components of Gas.  Ensure total % of all the gases is 100. b) Read below in last cell -  Relative Density at 15.6C (60F)  of the sample. Relative Density @ 15.6 C of LPG Conversion of a composit...

The App is based on ASTM D2598 standard. This Apps covers, by compositional analysis, the approximate determination of Vapor pressure of commercial propane, special-duty propane, commercial propane/butane mixtures, and commercial butane as per ASTM D2598 - Standard Practice for Calculation of Certain Physical Properties of Liquefied pet roleum (LP) Gases from Compositional Analysis. Apps developed on other Petroleum Calculations - see here. The composition of sample of LPG is obtained by using test method D2163 or other acceptable method. From the analysis (expressed in liquid volume percent) the vapor pressure at 37.8 C of the sample may be determined.   Steps :  a) Enter the Volume % of individual components of Gas.  Ensure total % of all the gases is 100. b) Read below in last cell - Vapor pressure of the sample. Vapor pressure App - ASTM D2598 Conversion of a compositional analysis from mole, gas volume or weight basis to liquid volum...

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 deriv...