SheetExample 2-4: Phase envelope of a natural gas with retrograde condensationComp% molWorking pathBubble curve:Dew curve:Methane0.74610T (C)P (MPa)Nitrogen0.006306015T (C)P (MPa)T (C)P (MPa)CO20.000102515-23.4340420.101325-162.352110.101325Ethane0.12526259-23.2985290.10233825-162.215360.10233825Propane0.08043251-16.3634090.16705669-161.904110.10467422Butanes0.03081-13.3828790.20404348-161.22160.1099434Pentanes0.00811-10.3143060.24921927-159.817290.12143832Hexanes0.00212-7.15833140.30439713-157.858750.13901298C7+0.00056-3.91702890.37179148-155.794270.15961186C8+0.00021CompMethaneNitrogenCO2EthanePropaneButanesPentanesHexanesC7+C8+-0.594213840.45410714-153.61490.18383172S1% mol0.7460990.0063030.00010.125250.0804320.0308120.0081130.0021210.000560.000212.80391840.55464768-151.310810.212400136.26809070.67744823-148.871140.246206269.78496740.82743721-146.284030.2863386913.3359321.010634-143.536440.3341321916.895381.2343912-140.614210.3912246720.42841.5076888-137.502030.4596260123.8875061.8414953-134.183460.5417997827.2080022.2492075-130.641080.640757827.6342412.3097586-126.85680.7601654530.3008982.7471882-122.81220.9044523233.0417713.355423-118.489221.078915535.2519764.0983231-113.87111.289795336.0607224.5171791-110.095571.481978836.6638725.005703-108.943461.544289236.9617845.6834023-103.695841.850455936.8469476.1139793-98.1231612.216947936.3033076.7245995-92.2269822.652515235.0170527.4676315-89.6122362.861619430.2222848.9320198-86.0157243.165249329.3261059.1209854-79.5023573.761650522.68224510.143873-74.671124.241259815.61928710.765939-72.6974114.44578218.714807511.068656-65.5924765.21912733.730187911.13944-62.0716175.62090033.001946911.140554-58.1261526.08213812.267602411.139439-50.4327327.00054092.257653711.13941-50.1166157.0384323-3.643408311.052564-41.1322258.100013-8.979497910.864306-38.6769038.3801819-13.79065510.61417-30.2481299.2794739-16.01767510.474598-29.8600379.3180527-16.66571610.431295-29.0742099.3953026-17.92906810.343526-27.8661719.5116676-18.30196210.316777-26.9359659.5992256-19.03615410.263023-25.1759559.7598221-19.25441610.246764-25.0112519.774498-19.68674310.214189-22.5753699.9842316-20.01064110.189461-21.94322810.036343-20.61043410.142957-21.77568610.04999-20.91698310.118833-21.52309210.070432-21.3696810.08277-21.07202710.10654-20.91725710.118812Critical pointT (C)P (Mpa)-20.91698310.118833

Sheet0.1013250.10132510.118833150.102338250.10233825150.167056690.1046742290.204043480.109943410.249219270.121438320.304397130.139012980.371791480.159611860.454107140.183831720.554647680.212400130.677448230.246206260.827437210.286338691.0106340.334132191.23439120.391224671.50768880.459626011.84149530.541799782.24920750.64075782.30975860.760165452.74718820.904452323.3554231.07891554.09832311.28979534.51717911.48197885.0057031.54428925.68340231.85045596.11397932.21694796.72459952.65251527.46763152.86161948.93201983.16524939.12098543.761650510.1438734.241259810.7659394.445782111.0686565.219127311.139445.620900311.1405546.082138111.1394397.000540911.139417.038432311.0525648.10001310.8643068.380181910.614179.279473910.4745989.318052710.4312959.395302610.3435269.511667610.3167779.599225610.2630239.759822110.2467649.77449810.2141899.984231610.18946110.03634310.14295710.0499910.11883310.07043210.0827710.1065410.118812

ABCDBubble lineDew lineCritical pointStatesTemperature (C)Pressure (MPa)Phase envelope of a natural gas

Select Thermdynamic Model in Process Simulation:(C) 2010 J-Ch de Hemptinne; J-M Ledanois, P. Mougin, A. Barreau