Gas Processing & Liquefaction Simulation with Aspen HYSYS

Learn acid gas sweetening with diethanolamine using SPSS-based modeling to remove H2S and CO2 from sewer gas, featuring a 20-stage absorber and regenerator with energy recovery.

Define the fluid package for acid gas sweetening with diethanolamine in HYSYS, select the acid gas solvent, build the amine contactor and regenerator, and complete the flowsheet with results review.

Build the amine contactor in a gas sweetening flowsheet and model the absorber with the acid gas package to obtain tray-based hydrogen sulfide and carbon dioxide efficiencies.

Add the regenerator and makeup mixer to recycle diethanolamine, preheat with a heat exchanger, and model an 18-stage regenerator column with reboiler and condenser to optimize amine gas treatment.

Complete the flowsheet and close the lean amine recycle loop, then review acid gas loading and thermal loading with the acid gas package to assess unit efficiency.

model a triethylene glycol dehydration plant in Aspen HYSYS to remove water vapor, determine product gas dew point, and analyze hydrate formation at the wellhead for pipeline integrity.

Define components and thermodynamic models in Aspen ICIs using the glycol property package, then build the flow sheet and define gas and triethylene glycol feeds.

Saturate the dry gas feed by mixing with water in the saturated unit operation before the ethylene glycol contactor, and view the hydrate formation temperature (17.9 912°C).

Add the triethylene glycol absorber to the flowsheet, rename it ethylene glycol contactor, set top stage feed and bottom stage inlet, and connect to a heat exchanger and regeneration column.

Model a triethylene glycol regeneration column as a distillation unit with one theoretical stage, full reflux, plus condenser and reboiler, including makeup glycol and a recycle loop to maintain balance.

Perform a water dew point calculation in a gas dehydration simulation using a component splitter to remove ethylene glycol, apply the water dew point correlation, and read results like -9.829°C.

Model natural gas liquids recovery using turboexpanders in Aspen HYSYS, integrating an LNG exchanger and demethanizer with distillation columns to maximize liquid recovery in a natural gas liquids fractionation plant.

Define Peng-Robinson properties and build a feed mix in Aspen HYSYS, add three-phase separator, LNG exchanger, cooler, turboexpander, and two-phase separator, then link the turboexpander pressure via a set operation.

Add fractionation columns to split methane and ethane rich overhead from propane and heavier bottoms, using a demethanizer and a distillation column, with condensate conditioning via a cooler.

Mix and compress LNG exchanger streams for export by adding a mixer, two compressors, and energy input from the expander, then set outlet pressures and customize stream properties.

Customize stream properties in a gas processing simulation by removing correlations and adding gas dew point and hydrocarbon dew point, set high and low heat values, and standard gas flow.

Model an integrated natural gas liquefaction plant in Aspen HYSYS, building a multi-flowsheet LNG process from gas sweetening and dehydration to propane refrigerant precooling, mixed refrigerant, and LNG production train.