def btx_ftpz(self):
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = BTXParameterBlock(default={
"valid_phase": ('Liq', 'Vap'),
"activity_coeff_model": "Ideal"
})
m.fs.unit = TrayColumn(
default={
"number_of_trays": 10,
"feed_tray_location": 5,
"condenser_type": CondenserType.totalCondenser,
"condenser_temperature_spec": TemperatureSpec.atBubblePoint,
"property_package": m.fs.properties,
"has_heat_transfer": False,
"has_pressure_change": False
})
# Inlet feed conditions
m.fs.unit.feed.flow_mol.fix(100)
m.fs.unit.feed.temperature.fix(368)
m.fs.unit.feed.pressure.fix(101325)
m.fs.unit.feed.mole_frac_comp[0, "benzene"].fix(0.5)
m.fs.unit.feed.mole_frac_comp[0, "toluene"].fix(0.5)
# unit level inputs
m.fs.unit.condenser.reflux_ratio.fix(1.4)
m.fs.unit.condenser.condenser_pressure.fix(101325)
m.fs.unit.reboiler.boilup_ratio.fix(1.3)
assert degrees_of_freedom(m) == 0
return m
def btx_ftpz_generic(self):
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = GenericParameterBlock(default=configuration)
m.fs.unit = TrayColumn(
default={
"number_of_trays": 10,
"feed_tray_location": 5,
"condenser_type": CondenserType.totalCondenser,
"condenser_temperature_spec": TemperatureSpec.atBubblePoint,
"property_package": m.fs.properties,
"has_heat_transfer": False,
"has_pressure_change": False
})
# Inlet feed conditions
m.fs.unit.feed.flow_mol.fix(100)
m.fs.unit.feed.temperature.fix(368)
m.fs.unit.feed.pressure.fix(101325)
m.fs.unit.feed.mole_frac_comp[0, "benzene"].fix(0.5)
m.fs.unit.feed.mole_frac_comp[0, "toluene"].fix(0.5)
# unit level inputs
m.fs.unit.condenser.reflux_ratio.fix(1.4)
m.fs.unit.condenser.condenser_pressure.fix(101325)
m.fs.unit.reboiler.boilup_ratio.fix(1.3)
return m
def test_config():
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = PhysicalParameterTestBlock()
m.fs.unit = TrayColumn(
default={
"number_of_trays": 10,
"feed_tray_location": 5,
"condenser_type": CondenserType.totalCondenser,
"condenser_temperature_spec": TemperatureSpec.customTemperature,
"property_package": m.fs.properties,
"has_heat_transfer": False,
"has_pressure_change": False
})
assert len(m.fs.unit.config) == 12
assert m.fs.unit.tray[5].config.is_feed_tray
assert hasattr(m.fs.unit, "condenser")
assert hasattr(m.fs.unit, "reboiler")
assert hasattr(m.fs.unit, "liq_stream")
assert hasattr(m.fs.unit, "vap_stream")
def distillation_model():
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = BTXParameterBlock(default={"valid_phase": ('Liq', 'Vap'),
"activity_coeff_model": "Ideal",
"state_vars": "FTPz"})
m.fs.unit = TrayColumn(default={
"number_of_trays": 3,
"feed_tray_location": 2,
"condenser_type":
CondenserType.totalCondenser,
"condenser_temperature_spec":
TemperatureSpec.atBubblePoint,
"property_package": m.fs.properties})
return m