Note - this case requires the optional hydrate control compounds.
This example uses the Hydrate Tool and the Function Solver Tool to determine how much ethylene glycol is required to reduce a wet gas stream's hydrate temperature to desired value. See the more detailed description.
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{
"SelectedFluidIndex" : 1,
"PropPkg" : "APRNGL",
"Tools" : [
{
"name" : "hydT",
"Description" : "hydrate T of mixture",
"Feed" : "mixed",
"DiagramX" : 109.6255,
"Type" : "Hydrate",
"HydrateVariable" : "T",
"DiagramY" : 72.35458
},
{
"Type" : "Mixer",
"name" : "mixer",
"DiagramX" : 113.4103,
"DiagramY" : 28.00001,
"inputPaths" : [
"feed",
"eg"
]
},
{
"Enabled" : "y",
"name" : "solver",
"DiagramX" : 157.3187,
"Type" : "Function Solver",
"type0" : "Vf",
"f0" : "#hydT - $hydSpecT",
"DiagramY" : 133.2948
}
],
"diagramX" : 48.35059,
"SelectedToolIndex" : 0,
"Program" : "Alph",
"NextFluidNumber" : 4,
"Fluids" : [
{
"CompFormula" : "[ 70,20,10,9,8,7,6,5,4,3,2 ]",
"Retrograde" : false,
"FlowFormula" : "1 mmscfd",
"SecondPropFormula" : "4000 kPa",
"name" : "Feed",
"DiagramX" : 10,
"TwoLiquids" : true,
"SumCompForFlow" : true,
"FirstPropType" : "T",
"SecondPropType" : "P",
"DiagramY" : 10,
"FirstPropFormula" : "15 C"
},
{
"FlowFormula" : "1.5 ^ #solver.0",
"SumCompForFlow" : false,
"DiagramX" : 12.44622,
"Retrograde" : false,
"FirstPropType" : "T",
"CompFormula" : "[ 0,0,0,0,0,0,0,0,0,0,0,1 ]",
"SecondPropType" : "P",
"FirstPropFormula" : "@feed",
"TwoLiquids" : false,
"SecondPropFormula" : "@feed",
"name" : "eg",
"Description" : "inhibitor",
"DiagramY" : 56.47808
},
{
"FlowFormula" : "#mixer",
"SumCompForFlow" : false,
"DiagramX" : 219.1992,
"Retrograde" : false,
"FirstPropType" : "P",
"CompFormula" : "#mixer",
"SecondPropType" : "H",
"FirstPropFormula" : "#mixer",
"TwoLiquids" : true,
"SecondPropFormula" : "#mixer",
"name" : "mixed",
"Description" : "feed + inhibitor",
"DiagramY" : 26.04383
}
],
"Hypotheticals" : [],
"diagramY" : -3.836653,
"CompoundNames" : [
"METHANE",
"ETHANE",
"PROPANE",
"ISOBUTANE",
"n-BUTANE",
"ISOPENTANE",
"n-PENTANE",
"n-HEXANE",
"n-HEPTANE",
"n-OCTANE",
"WATER",
"ETHYLENE GLYCOL"
],
"SelectedVariableIndex" : 0,
"Variables" : [
{
"PropertyFormula" : "-10 C",
"PropertyType" : "T",
"name" : "hydSpecT",
"Description" : "desired hydrate temperature",
"DiagramX" : 21.88446,
"DiagramY" : 129.5299
}
],
"CaseName" : "inhibitor",
"CurrentUnitSet" : 1,
"NextVariableNumber" : 5,
"Version" : 1.3,
"diagramScale" : 2.345794,
"DisplayedProperties" : {
"-4" : "y",
"8" : "y",
"-2" : "y",
"-1" : "y",
"10001" : "y",
"-6" : "y",
"9" : "y"
}
}