Next Article in Journal
Investigation on Reinforcement and Lapping Effect of Fracture Grouting in Yellow River Embankment
Next Article in Special Issue
A Differentiable Model for Optimizing Hybridization of Industrial Process Heat Systems with Concentrating Solar Thermal Power
Previous Article in Journal
Systematic Design and Evaluation of an Extraction Process for Traditionally Used Herbal Medicine on the Example of Hawthorn (Crataegus monogyna JACQ.)
Previous Article in Special Issue
An Integrated Approach to Water-Energy Nexus in Shale-Gas Production
Open AccessFeature PaperArticle

Modelling of a Naphtha Recovery Unit (NRU) with Implications for Process Optimization

Department of Chemical Engineering & Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada
Author to whom correspondence should be addressed.
Processes 2018, 6(7), 74;
Received: 30 May 2018 / Revised: 16 June 2018 / Accepted: 18 June 2018 / Published: 22 June 2018
(This article belongs to the Special Issue Modeling and Simulation of Energy Systems)
The naphtha recovery unit (NRU) is an integral part of the processes used in the oil sands industry for bitumen extraction. The principle role of the NRU is to recover naphtha from the tailings for reuse in this process. This process is energy-intensive, and environmental guidelines for naphtha recovery must be met. Steady-state models for the NRU system are developed in this paper using two different approaches. The first approach is a statistical, data-based modelling approach where linear regression models have been developed using Minitab® from plant data collected during a performance test. The second approach involves the development of a first-principles model in Aspen Plus® based on the NRU process flow diagram. A novel refinement to this latter model, called “withdraw and remix”, is proposed based on comparing actual plant data to model predictions around the two units used to separate water and naphtha. The models developed in this paper suggest some interesting ideas for the further optimization of the process, in that it may be possible to achieve the required naphtha recovery using less energy. More plant tests are required to validate these ideas. View Full-Text
Keywords: naphtha recovery unit; statistical model; simulation; optimization naphtha recovery unit; statistical model; simulation; optimization
Show Figures

Figure 1

MDPI and ACS Style

Du, J.; Cluett, W.R. Modelling of a Naphtha Recovery Unit (NRU) with Implications for Process Optimization. Processes 2018, 6, 74.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop