How large is aspen hysys11/10/2022 A cold temperature limit of 140 ☌ was set as a technical constraint on the heating oil side to prevent Sulphur condensation in the exhaust gas. The adequate turbine type was used for each scenario and a waste heat recovery unit (WHRU) was used to recover energy from the exhaust gas to the heating oil loop. Consequently, three scenarios were investigated, P30, P50 and P60, referring respectively to inlet pressures of 30, 40 and 50 bar upstream the compression unit. The available exhaust waste energy depends on the pressure ratio of the compression unit. Sweetening and turbo-compression models were validated against plant and manufacturer data respectively.įor the NG sweetening unit, the predicted CO 2 content and temperature profiles in absorber and regeneration columns showed a deviation of less than 4% from plant data whereas, for the turbo-compression unit, the model presented a deviation of less than 2% from the overall efficiency and exhaust flow specified by the manufacturer. The MDEA/DEA based acid gas sweetening unit was simulated using an equilibrium approach and Li-Mather thermodynamic model whereas the compression and turbine systems where simulated using Peng-Robinson equation of state. The captured CO 2 is then compressed up to 200 bar. CO 2 molar content in the feed was ranged between 3 to 10% whereas CO 2 content of the sweet gas outlet was set at the limit requested by pipeline transport constraint, i.e. A feed of 5 MMSCM/Day of raw NG at different reservoir pressures (30, 40 and 50 bar) was considered in this study. the amine based CO 2 capture and the natural gas driven turbo-compression. Process simulation tool Aspen Hysys V9 was used to simulate both processes, i.e. Grégoire Leonard, in Computer Aided Chemical Engineering, 2020 2 Methodology Sobol’ sensitivity indices using sensitivity analysis (SA) were calculated simultaneously, for determining the influential parameters. After the post processing of the results, the impact of the uncertainties on the objectives was monitored. Then by using the HDSS environment, the cubature nodes were passed to Hysys model.įew Gauss-Hermite cubature nodes were used to make a surrogate model in comparison with MC simulation points. First, a code to generate the cubature nodes and weights for 5 th order gPC method was developed in the Matlab environment. The performance of the proposed gPC based methodology was tested for making a surrogate model and thereby UQ and SA was carried out simultaneously. Hence, a code was made for creating a hybrid digital simulation system (HDSS) by connecting Matlab software to exchange the information seamlessly. Moonyong Lee, in Computer Aided Chemical Engineering, 2017 2.3 Software integration for UQ and SAĪspen Hysys is a deterministic type simulation software and cannot support randomness, rather Matlab is a multi-purpose tool which can do stochastic calculations. It's not so much cost, as it is "this is what we're used to".Wahid Ali. What I've seen is folks get used to one simulator, and because of familiarity, that's what they stick with, even if someone shows up with a "better" product, that's cheaper, faster, w/e. Aspen Plus has solids handling capabilities in it, I believe, and it has an "automatic recycle" capability whereas in HYSYS you have to add them manually. So as far as accuracy goes, you're *probably* going to get the same answers out of both programs. I think they both use the same thermo version 7.1 of Aspen's suite of tools allows HYSYS to start using the property packages from Aspen Plus. AspenTech has a very large market share, despite the fact that (in the case of HYSYS, in my opinion) is very user unfriendly. The HYSYS user interface is horrid, based on my experience with other simulators.
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