Pepe

This model illustrates some of the features in ABML. It is derived from our volume sample model. Distributed recursion solver (DR) will work with this model also. You will need an ABML license. To run this model please place the attached dynamically link library, PUBML.DLL, into the folder where pimswin.exe is installed. Re-launch PIMS after placing the PUBML.DLL into the pimswin.exe folderso that PIMS can pick up this dll.

PUBML.DLL is a dynamically link library that the user can choose to build to add a custom set of correlations. The PUBML.DLL source code is attached to give the user a feel for what is needed to construct this dll. There is supplemental documentation (not attached) to explain in detail how to build this dll.

In this model, a refiner is producing 4grades of gasoline, URG, UPR, CRG and CR2. The first 2 grades are EPA RFGs and the last 2 are CARB RFGs. All 4 are splash blended with ethanol at the terminal.

List of ABML Correlations
1. D86FromPercentOff / D86ToPercentOff – to calculate the blended D86 temperature using Hydrocarbon Processing 1994.
2. UBML_RVPF, UBML_RVPR- user defined RVP forward and reverse transforms defined in thePUBML.dll. PUBML.dll is a dynamically link library that the user can create to add custom correlations to ABML’s list of correlations. PIMS does offer a simpler way to add custom correlations through the property calculator or table INDEX (GPRPCALC, GBLNVAL and GNDXR) described in item 5 below. The user however may choose to use PUBML instead when the correlations are too complex for theproperty calculator, or the correlations need to be protected by a license. The user may also choose to do this because it is a convenient way to package and distribute a standard set of company wide correlations. Note that ABML has a built in RVP/RVP index correlations. The use of PUBML here is for demonstration purpose only.
3. CARBOB2 - calculates the ethanol blended properties needed bythe CARB3 correlation. The ethanol value entered in the optional section for CARBOB2 is the default value. The amount of ethanol by blend is specified in table ABMLOPT. Please note that it is in units of volume percent and not volume fraction. Note that ethanol is not a stream nor is the amount of ethanol a decision variable in this model. If this isn’t the case, use CARBOB and its set ofhelper correlations instead. In this model CARBOB2 takes its input from D86FromPercentOff (D86) and UBML_RVPR (RVP). Note that CARBOB2 automatically maps its output into the CARB3 or CARB equation. Mapping in table RFG is not required and in fact ignored. The user however needs to declare a blend to be a CARBOB2 blend in table BLNSPEC. See PIMS documentation on table BLNSPEC.
4. RBOB –calculates the ethanol blended properties needed by the EPA RFG emission correlation. This correlation is analogous to CARBOB2 but also calculates the E200 and E300 needed in the EPA RFG emission correlation. In fact RBOB is a combination of CARBOB2 and the E200E300EPA correlations. The latter correlation is from the EPA RFG emission prediction spreadsheet that converts T50 and T90 to E200 andE300. The ethanol value entered in the optional section for RBOB is the default value. The amount of ethanol by blend is specified in table ABMLOPT. Please note that it is in units of volume percent and not volume fraction. Note that ethanol is not a stream nor is the amount of ethanol a decision variable in this model. In this model RBOB takes its input from D86FromPercentOff (D86) andUBML_RVPR (RVP). Note that RBOB automatically maps its output into the EPA RFG correlation. Mapping in table RFG is not required and in fact ignored. Note that RBOB is valid for EPA RFG and not conventional. It is only valid for the complex equation. The user needs to declare a blend to be a RBOB in table BLNSPEC. See PIMS manual on table BLNSPEC for additional information
5. UBML_DRIVABILITY...