Separator Equipment

Documentation for separator equipment in NeqSim process simulation.

Table of Contents

Overview

Location: neqsim.process.equipment.separator

Classes:

Separator Types

Two-Phase Separator

import neqsim.process.equipment.separator.Separator;

Separator separator = new Separator("V-100", inletStream);
separator.run();

// Get outlet streams
Stream gasOut = separator.getGasOutStream();
Stream liquidOut = separator.getLiquidOutStream();

// Properties
double gasRate = gasOut.getFlowRate("kg/hr");
double liquidRate = liquidOut.getFlowRate("kg/hr");
double liquidLevel = separator.getLiquidLevel();

Three-Phase Separator

import neqsim.process.equipment.separator.ThreePhaseSeparator;

ThreePhaseSeparator separator = new ThreePhaseSeparator("V-200", inletStream);
separator.run();

// Get outlet streams
Stream gasOut = separator.getGasOutStream();
Stream oilOut = separator.getOilOutStream();
Stream waterOut = separator.getWaterOutStream();

// Water cut
double waterCut = separator.getWaterCut();

Gas Scrubber

import neqsim.process.equipment.separator.GasScrubber;

GasScrubber scrubber = new GasScrubber("Inlet Scrubber", gasStream);
scrubber.run();

// Dry gas output
Stream dryGas = scrubber.getGasOutStream();

// Condensate removal
Stream condensate = scrubber.getLiquidOutStream();

Separator Sizing

Vertical Separator

// Set dimensions
separator.setInternalDiameter(2.0, "m");
separator.setLiquidVolume(10.0, "m3");

// Or specify residence time
separator.setLiquidResidenceTime(120.0, "sec");

Horizontal Separator

separator.setSeparatorType("horizontal");
separator.setLength(10.0, "m");
separator.setInternalDiameter(2.5, "m");

Dynamic Simulation

// Enable dynamic mode
separator.setCalculateSteadyState(false);

// Set initial conditions
separator.setLiquidLevel(0.5);  // 50% level

// Run transient
for (int i = 0; i < 100; i++) {
    separator.runTransient();
    
    double level = separator.getLiquidLevel();
    double pressure = separator.getPressure();
}

Separation Efficiency

// Set droplet removal efficiency
separator.setGasCarryUnderFraction(0.001);  // 0.1% liquid in gas
separator.setLiquidCarryOverFraction(0.0001); // 0.01% gas in liquid

Example: HP/LP Separation Train

// HP Separator at 50 bar
Separator hpSep = new Separator("HP Sep", feedStream);
process.add(hpSep);

// Letdown valve
ThrottlingValve lpValve = new ThrottlingValve("LP Valve", hpSep.getLiquidOutStream());
lpValve.setOutletPressure(5.0, "bara");
process.add(lpValve);

// LP Separator at 5 bar
Separator lpSep = new Separator("LP Sep", lpValve.getOutletStream());
process.add(lpSep);

// Run process
process.run();

// Total gas production
double hpGas = hpSep.getGasOutStream().getFlowRate("MSm3/day");
double lpGas = lpSep.getGasOutStream().getFlowRate("MSm3/day");
double totalGas = hpGas + lpGas;