Plant Management
Simulation targets compressors, consumption and emissions
Plant simulation is a critical part of any plant management strategy today and process companies are turning to the most sophisticated solutions on the market. Sean Ottewell reports.
Die Anlagensimulation ist heute ein wichtiger Bestandteil des Konzepts von Werksleitungen und Unternehmen aus dem Bereich der Verfahrenstechnik greifen zunehmend zu den anspruchsvollsten Lösungen auf dem Markt. Sean Ottewell berichtet.
La simulation pour centrales constitue un élément critique de toute stratégie actuelle de gestion de centrales et les sociétés de traitement se tournent vers les solutions les plus sophistiquées sur le marché. Sean Ottewell témoigne.
U
sing dynamic modelling and simulation, Aspen Technology’s version 8.6 of its aspenONE software addresses a number of
significant issues for process industries. Among a raft of new features included in v8.6 is Activated Dynamics Analysis, which allows dynamic modelling of compressors – a high value task requiring both expertise and experience. V8.6 of Aspen HYSYS software automates dynamic modelling with a single button click to speed up model setup and enable more process engineers to perform compressor operability screening. All companies operating compressors, especially t hose processing gas in upstream and midstream, will benefit from better flow assurance and reduced maintenance cost. AspenTech says that no similar capability is available in the market. The new version includes expanded
Fig. 1. Companies operating compressors will benefit from better flow assurance and reduced maintenance cost..
pressure safety valve design and rating in Aspen Plus and Aspen HYSYS. In v8.6 new fire analysis scenario calculations – accounting for latent heat and temperature change – and rupture disk sizing have been added. All functionality is available in both Aspen Plus and Aspen HYSYS, improving chemical and energy operators’ compliance with API 520 and 521.
Furthermore, new detailed unit rate estimating in Aspen Capital Cost Estimator (ACCE) extends the software’s scope into the detailed estimating phase of a project. ACCE v8.6 enables easy adjustment of labour and material unit rates as well as materials of construction. The result is expected to enable organisations to achieve up to 10% accuracy or better, reducing project risk and improving decision making around the use of capital. Commenting on the new Activated
Dynamics Analysis compressor surge feature, Ian D Wyatt, principal engineer with WS Atkins, said: “[This] is an innovative screening tool before full dynamic compressor modelling. It provides us with a good starting point to perform a compressor study across a range of scenarios. The data is presented in a well-organised manner, and pre-made results displays are convenient.” “The new safety environment in Aspen Plus v8.6 will not only allow us to standardise our relief system documentation company-wide, but it will also provide us with the confidence that the calculation methodologies across the company are high-quality and accurate by using conditions already captured in our current process models,” added Shashank Shah, senior principal engineer with Arkema.
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