Winter 2017 /

Process Modelling and Optimization. 

The Process Ecology Newsletter includes updates and news relevant to the energy industry regarding regulatory updates for air emissions, technical information related to process simulation as well as case studies and best practices in process engineering.

This issue

  • HYSYS Tips and Tricks : User-Variables to calculate erosional velocity in dynamic simulation models 
  • Ethylene Glycol Behaviour at Low Temperature Conditions in Refrigeration Plants 
  • Training, News and Events 

HYSYS Tips and Tricks: User-Variables to calculate erosional velocity in dynamic simulation models

When modelling piping networks, especially in the presence of loops and parallel piping, HYSYS Dynamics can be easily used as a pressure-flow solver simulator (this was discussed in our article “Modelling Piping Networks – HYSYS Steady State, HYSYS Hydraulics or HYSYS Dynamics?”). However, one major flaw of using this methodology is that flow assurance calculations are not available in Dynamics.An erosion calculation is quite useful when modelling piping networks. This article suggests a methodology to correct this issue by setting up user variables in HYSYS and provides a step-by-step example including a sample of the required code.

 Read more.

Ethylene Glycol Behaviour at Low Temperature Conditions in Refrigeration Plants


The formation of hydrates in natural gas processing facilities and pipelines is a critical problem as it could lead to blocked pipelines and shutdowns and even to the destruction of valuable equipment. Because of these potential devastating and costly consequences, hydrate suppression methods are of great interest to operating companies. Injecting hydrate inhibitors such as methanol and Ethylene Glycol (EG) is one of the most common methods to suppress hydrate formation in the free water phase. These chemical additives thermodynamically destabilize hydrates and effectively lower the temperature of hydrate formation. For facilities, EG is generally the preferred choice as a hydrate inhibitor for continuous injection as it can be effectively regenerated and recycled.

  Read more.

 Training, News and Events

  • The Oil Sands Innovation Summit hosted by COSIA is March 21-22 at the Markin MacPhail Center in Canada Olympic Park.Process Ecology will be attending the event and participating in the poster session.
  • We will be presenting at this year's OPTIMIZE 2017 Conference in Houston, TX April 25-26. 
  • Process Ecology will be attending this year's CETAC Conference April 17-21. 
  • CPANS will be hosting their annual conference in Edmonton May 9th. It will be held at the University of Alberta, Lister Centre. We look forward to attending this conference. 
  • Process Ecology can help take the stress out of your NPRI and greenhouse gas emissions reporting requirements. We will work with you to efficiently gather the required field data, estimate corresponding air emissions, and submit the information as required. E-mail or call us (403-313-8931) if you would like more information. 
  • We have experience optimizing and troubleshooting gas and NGL plants. Projects include resolving capacity issues, troubleshooting hydrate formation, and resolving process upsets through improved control. We can provide the experienced engineering support to help you to improve facility operations.Send us an E-mail or call us (403-313-8931) if you would like more information.

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