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update to improve accuracy of recycle
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@EvenSol
EvenSol committed Jan 21, 2024
1 parent 53af682 commit 5cc77ba
Showing 1 changed file with 42 additions and 26 deletions.
68 changes: 42 additions & 26 deletions src/test/java/neqsim/processSimulation/processSystem/GlycolRigTest2.java
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Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,13 @@ public void runTEGProcessTest() {
strippingFlareGasTPsetter.setOutTemperature(stripping_gas_feed_temperature, "C");
strippingFlareGasTPsetter.run();

StreamInterface recycleFlareGasStream = strippingFlareGasTPsetter.getOutletStream();

Recycle recycleFlareGas = new Recycle("stripping gas recirc Flare Gas");
recycleFlareGas.addStream(recycleFlareGasStream);
recycleFlareGas.setOutletStream(stripping_gas);
recycleFlareGas.setCompositionAccuracy(1e-6);

Stream liquid_to_treatment = new Stream(sep_regen_gas.getLiquidOutStream());
liquid_to_treatment.setName("water to treatment");

Expand All @@ -307,11 +314,7 @@ public void runTEGProcessTest() {
recycle_gas_from_stripper.addStream(stripper.getGasOutStream());
recycle_gas_from_stripper.setOutletStream(gas_to_reboiler);

StreamInterface recycleFlareGasStream = strippingFlareGasTPsetter.getOutletStream();

Recycle recycleFlareGas = new Recycle("stripping gas recirc Flare Gas");
recycleFlareGas.addStream(recycleFlareGasStream);
recycleFlareGas.setOutletStream(stripping_gas);

neqsim.thermo.system.SystemInterface pure_teg = dry_feed_gas.getFluid().clone();
double[] molarComp2 = new double[components_list.size()];
Expand All @@ -332,13 +335,13 @@ public void runTEGProcessTest() {

Calculator makeup_calculator = new Calculator("TEG makeup calculator");
makeup_calculator.addInputVariable(dehydrated_gas);
makeup_calculator.addInputVariable(splitterGasToFlare.getSplitStream(1));
makeup_calculator.addInputVariable(flash_gas);
makeup_calculator.addInputVariable(gasToFlare);
makeup_calculator.addInputVariable(liquid_to_treatment);
makeup_calculator.setOutputVariable(makeup_teg);

StaticMixer makeup_mixer = new StaticMixer("makeup mixer");
makeup_mixer.addStream(stripper.getLiquidOutStream());
makeup_mixer.addStream(stripper.getSolventOutStream());
makeup_mixer.addStream(makeup_teg);

Pump hotLeanTEGPump = new Pump(makeup_mixer.getOutStream());
Expand All @@ -351,22 +354,27 @@ public void runTEGProcessTest() {
cooler_hot_teg3.setOutTemperature(273.15 + lean_teg_temperature);

cond_heat.setEnergyStream(column.getCondenser().getEnergyStream());

StreamInterface lean_TEG_to_abs = cooler_hot_teg3.getOutStream();
lean_TEG_to_abs.setName("lean TEG to absorber");

Recycle recycle_lean_teg = new Recycle("lean TEG resycle");
recycle_lean_teg.addStream(lean_TEG_to_abs);
recycle_lean_teg.setOutletStream(teg_feed);
recycle_lean_teg.setPriority(200);
recycle_lean_teg.setFlowAccuracy(1e-6);
recycle_lean_teg.setDownstreamProperty("flow rate");

ProcessSystem operations = new ProcessSystem();
operations.add(dry_feed_gas);
operations.add(saturated_feed_gas);
operations.add(water_saturated_feed_gas);
operations.add(feed_tp_setter_to_absorber);
operations.add(hydrate_t_analyser2);
operations.add(teg_feed);
operations.add(feed_to_absorber);
operations.add(teg_feed);
operations.add(absorber);
operations.add(dehydrated_gas);
operations.add(rich_teg);
operations.add(cond_heat);
operations.add(glycol_flash_valve);
Expand All @@ -376,48 +384,56 @@ public void runTEGProcessTest() {
operations.add(flash_liquid);
operations.add(fine_filter);
operations.add(heat_ex);
operations.add(stripping_gas);
operations.add(gas_to_reboiler);
operations.add(glycol_flash_valve2);
operations.add(gas_to_reboiler);
operations.add(column);
operations.add(stripper);
operations.add(splitterGasToFlare);
operations.add(strippingFlareGasTPsetter);
operations.add(recycle_gas_from_stripper);
operations.add(cooler_regen_gas);
operations.add(sep_regen_gas);
operations.add(gasToFlare);
operations.add(liquid_to_treatment);
operations.add(gasToFlare);
operations.add(splitterGasToFlare);
operations.add(strippingFlareGasTPsetter);
operations.add(recycleFlareGasStream);
operations.add(recycleFlareGas);
operations.add(makeup_teg);
operations.add(stripper);
operations.add(recycle_gas_from_stripper);
operations.add(stripping_gas);
operations.add(makeup_calculator);
operations.add(makeup_teg);
operations.add(makeup_mixer);
operations.add(hotLeanTEGPump);
operations.add(cooler_hot_teg3);
operations.add(lean_TEG_to_abs);
operations.add(recycle_lean_teg);
operations.add(dehydrated_gas);
operations.add(water_dew_point_analyser);
operations.add(water_dew_point_analyser2);
operations.add(water_dew_point_analyser_to_absorber);

/*
*
*
* operations.add(water_dew_point_analyser); operations.add(water_dew_point_analyser2);
* operations.add(water_dew_point_analyser_to_absorber);
*/
operations.run();

double waterOut = ((Stream) dehydrated_gas).getFluid().getComponent("water").getx() * 1E6;
System.out.println("Water in the dehydrated stream after first run " + waterOut + " ppm");

System.out.println("TEG " + lean_TEG_to_abs.getFluid().getPhase(0).getWtFrac("TEG"));
System.out.println("makeup " + makeup_teg.getFlowRate("kg/hr"));
operations.run();

double waterOut2 = ((Stream) dehydrated_gas).getFluid().getComponent("water").getx() * 1E6;
System.out.println("Water in the dehydrated stream after second run " + waterOut2 + " ppm");

System.out.println("TEG " + lean_TEG_to_abs.getFluid().getPhase(0).getWtFrac("TEG"));
System.out.println("makeup " + makeup_teg.getFlowRate("kg/hr"));
operations.run();
operations.run();
operations.run();

double waterOut3 = ((Stream) dehydrated_gas).getFluid().getComponent("water").getx() * 1E6;
System.out.println("Water in the dehydrated stream after 5 run " + waterOut3 + " ppm");
System.out.println("Water in the dehydrated stream after second run " + waterOut3 + " ppm");
System.out.println("TEG " + lean_TEG_to_abs.getFluid().getPhase(0).getWtFrac("TEG"));
System.out.println("makeup " + makeup_teg.getFlowRate("kg/hr"));

operations.run();
double waterOut4 = ((Stream) dehydrated_gas).getFluid().getComponent("water").getx() * 1E6;
System.out.println("Water in the dehydrated stream after second run " + waterOut4 + " ppm");
System.out.println("TEG " + lean_TEG_to_abs.getFluid().getPhase(0).getWtFrac("TEG"));
System.out.println("makeup " + makeup_teg.getFlowRate("kg/hr"));
// // Check recycles
// double reboilerStripperMethane =
// ((Stream) gas_to_reboiler).getFluid().getComponent("methane").getx() * 1E6;
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