Megan Jobson | The University of Manchester (original) (raw)

Papers by Megan Jobson

Research paper thumbnail of A multi-period Mixed Integer Linear Program for design of residential distributed energy centres with thermal demand data discretisation

Sustainable Production and Consumption, 2016

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Research paper thumbnail of Optimization of Existing Heat-Integrated Refinery Distillation Systems

Chemical Engineering Research and Design, 2003

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Research paper thumbnail of Synthesis of Ternary Homogeneous Azeotropic Distillation Sequences: Entrainer Selection

Asean Journal of Chemical Engineering, Jun 8, 2012

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Research paper thumbnail of Conceptual design of single-feed hybrid reactive distillation columns

Chemical Engineering Science, 2005

It is well known that reactive distillation offers benefits by integrating distillation and react... more It is well known that reactive distillation offers benefits by integrating distillation and reaction within a single unit. While there are procedures available for the synthesis of non-reactive distillation processes and of reaction-separation systems, the design of reactive distillation columns is still a challenge. This work presents a new synthesis and design methodology for hybrid reactive distillation columns, featuring both

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Research paper thumbnail of Synthesis of Ternary Homogeneous Azeotropic Distillation Sequences: 2. Flowsheet Identification

Asean Journal of Chemical Engineering, Sep 25, 2013

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Research paper thumbnail of Available online Design and simulation of multistream plate-fin heat exchangers – Single-phase streams

Applied Thermal Engineering, 2016

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Research paper thumbnail of Optimisation of heat integrated distillation sequences in the context of background process

Computer Aided Chemical Engineering, 2001

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Research paper thumbnail of Operation and modelling of a flowsheet to separate neptunium and uranium in centrifugal contactors

BNFL have developed a single cycle flowsheet using hydroxamic acids to control the behaviour of n... more BNFL have developed a single cycle flowsheet using hydroxamic acids to control the behaviour of neptunium and centrifugal contactors to carry out the solvent extraction steps. The performance of such a flowsheet will be limited by the distribution behaviour of neptunium in the presence of hydroxamic acids and the mass transfer efficiency of the centrifugal contactors. These topics have been investigated in an extensive research programme.

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Research paper thumbnail of A Systematic Approach to Increasing Capacity and Decreasing Energy Demand of Existing Refinery Distillation Systems

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Research paper thumbnail of Retrofit Shortcut Models for Design of Existing Distillation Systems

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Research paper thumbnail of Optimisation of Existing Heat-Integrated Complex Distillation Systems

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Research paper thumbnail of Automated Heat Exchanger Network Design for Process Streams with Temperature-Dependent Thermal Properties

In this work, a methodology has been developed for the automated design and synthesis of heat exc... more In this work, a methodology has been developed for the automated design and synthesis of heat exchanger networks (HENs) when the thermal properties of streams vary significantly with temperature. Rodriguez (2005) developed an optimisation approach to the design of complex HENs. In the approach, Simulated Annealing (SA) was employed as the optimisation algorithm. Both structural options, such as re-piping, re-sequencing of existing exchangers, and continuous options, such as stream- split fractions and exchanger duties, were considered without simplification of cost models. However, the thermal properties (i.e. heat capacity) of streams were assumed constant to maintain a linear problem representation. This assumption will introduce errors when applying the method to streams with a large temperature range, when the thermal properties are not constant, such as in crude oil refining. The shortcomings are overcome in this work by representing streams using multiple segments, each with c...

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Research paper thumbnail of Attainable products for the vapour-liquid separation of homogeneous ternary mixtures

The Chemical Engineering Journal and the Biochemical Engineering Journal, 1995

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Research paper thumbnail of Optimisation of heat-integrated crude oil distillation systems. Part III: Optimisation framework

Industrial & Engineering Chemistry Research, 2015

ABSTRACT

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Research paper thumbnail of Retrofit of heat-integrated crude oil distillation columns

Chemical Engineering Research and Design, 2015

ABSTRACT

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Research paper thumbnail of Retrofit strategy for the site-wide mitigation of CO2 emissions in the process industries

Chemical Engineering Research and Design, 2015

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Research paper thumbnail of Energy Management Strategies for Process Site CO2 Emissions Reduction

Computer Aided Chemical Engineering, 2012

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Research paper thumbnail of A Design Methodology for Retrofit of Crude Oil Distillation Systems

Computer Aided Chemical Engineering, 2014

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Research paper thumbnail of Modelling and optimisation of industrial absorption processes: An EC collaborative research project

Computer Aided Chemical Engineering, 2005

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Research paper thumbnail of The use of reduced models for design and optimisation of heat-integrated crude oil distillation systems

Energy, 2014

ABSTRACT The importance of exploiting degrees of freedom within a crude oil distillation process ... more ABSTRACT The importance of exploiting degrees of freedom within a crude oil distillation process for improving energy performance has been a feature of process integration from the earliest days. Combining process changes with changes to the heat recovery system leads to far better results, compared with changes to the heat recovery system alone. However, in order to obtain the best results, the distillation process and heat exchanger network need to be optimised simultaneously. Whilst in principle this is straightforward, there are many difficulties. Methods for the optimisation of heat exchanger networks are well developed. In these methods, heat exchanger network models are based on network details, such as stream connections between heat exchangers, heat transfer area of individual units, etc. The consideration of these network details is important to design and optimise crude oil distillation systems. On the other hand, the distillation process model to be coupled with the heat exchanger network model needs to be simple and robust enough to be included in an optimisation framework. If distillation models and heat recovery models can be combined effectively, then there are not just opportunities for design and retrofit, but also for operational optimisation. One of the big challenges to progress the application of this approach is the effective generation of reduced distillation models. Short-cut distillation models can be used, but many other options are available, such as the use of artificial neural networks. This paper reviews various crude oil distillation modelling approaches and highlights the areas of application of these different approaches. An example illustrates the computational performance of reduced and rigorous crude oil distillation models.

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Research paper thumbnail of A multi-period Mixed Integer Linear Program for design of residential distributed energy centres with thermal demand data discretisation

Sustainable Production and Consumption, 2016

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Research paper thumbnail of Optimization of Existing Heat-Integrated Refinery Distillation Systems

Chemical Engineering Research and Design, 2003

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Synthesis of Ternary Homogeneous Azeotropic Distillation Sequences: Entrainer Selection

Asean Journal of Chemical Engineering, Jun 8, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Conceptual design of single-feed hybrid reactive distillation columns

Chemical Engineering Science, 2005

It is well known that reactive distillation offers benefits by integrating distillation and react... more It is well known that reactive distillation offers benefits by integrating distillation and reaction within a single unit. While there are procedures available for the synthesis of non-reactive distillation processes and of reaction-separation systems, the design of reactive distillation columns is still a challenge. This work presents a new synthesis and design methodology for hybrid reactive distillation columns, featuring both

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Synthesis of Ternary Homogeneous Azeotropic Distillation Sequences: 2. Flowsheet Identification

Asean Journal of Chemical Engineering, Sep 25, 2013

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Research paper thumbnail of Available online Design and simulation of multistream plate-fin heat exchangers – Single-phase streams

Applied Thermal Engineering, 2016

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Research paper thumbnail of Optimisation of heat integrated distillation sequences in the context of background process

Computer Aided Chemical Engineering, 2001

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Research paper thumbnail of Operation and modelling of a flowsheet to separate neptunium and uranium in centrifugal contactors

BNFL have developed a single cycle flowsheet using hydroxamic acids to control the behaviour of n... more BNFL have developed a single cycle flowsheet using hydroxamic acids to control the behaviour of neptunium and centrifugal contactors to carry out the solvent extraction steps. The performance of such a flowsheet will be limited by the distribution behaviour of neptunium in the presence of hydroxamic acids and the mass transfer efficiency of the centrifugal contactors. These topics have been investigated in an extensive research programme.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Systematic Approach to Increasing Capacity and Decreasing Energy Demand of Existing Refinery Distillation Systems

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Retrofit Shortcut Models for Design of Existing Distillation Systems

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Optimisation of Existing Heat-Integrated Complex Distillation Systems

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Automated Heat Exchanger Network Design for Process Streams with Temperature-Dependent Thermal Properties

In this work, a methodology has been developed for the automated design and synthesis of heat exc... more In this work, a methodology has been developed for the automated design and synthesis of heat exchanger networks (HENs) when the thermal properties of streams vary significantly with temperature. Rodriguez (2005) developed an optimisation approach to the design of complex HENs. In the approach, Simulated Annealing (SA) was employed as the optimisation algorithm. Both structural options, such as re-piping, re-sequencing of existing exchangers, and continuous options, such as stream- split fractions and exchanger duties, were considered without simplification of cost models. However, the thermal properties (i.e. heat capacity) of streams were assumed constant to maintain a linear problem representation. This assumption will introduce errors when applying the method to streams with a large temperature range, when the thermal properties are not constant, such as in crude oil refining. The shortcomings are overcome in this work by representing streams using multiple segments, each with c...

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Research paper thumbnail of Attainable products for the vapour-liquid separation of homogeneous ternary mixtures

The Chemical Engineering Journal and the Biochemical Engineering Journal, 1995

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Research paper thumbnail of Optimisation of heat-integrated crude oil distillation systems. Part III: Optimisation framework

Industrial & Engineering Chemistry Research, 2015

ABSTRACT

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Retrofit of heat-integrated crude oil distillation columns

Chemical Engineering Research and Design, 2015

ABSTRACT

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Retrofit strategy for the site-wide mitigation of CO2 emissions in the process industries

Chemical Engineering Research and Design, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Energy Management Strategies for Process Site CO2 Emissions Reduction

Computer Aided Chemical Engineering, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Design Methodology for Retrofit of Crude Oil Distillation Systems

Computer Aided Chemical Engineering, 2014

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Modelling and optimisation of industrial absorption processes: An EC collaborative research project

Computer Aided Chemical Engineering, 2005

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The use of reduced models for design and optimisation of heat-integrated crude oil distillation systems

Energy, 2014

ABSTRACT The importance of exploiting degrees of freedom within a crude oil distillation process ... more ABSTRACT The importance of exploiting degrees of freedom within a crude oil distillation process for improving energy performance has been a feature of process integration from the earliest days. Combining process changes with changes to the heat recovery system leads to far better results, compared with changes to the heat recovery system alone. However, in order to obtain the best results, the distillation process and heat exchanger network need to be optimised simultaneously. Whilst in principle this is straightforward, there are many difficulties. Methods for the optimisation of heat exchanger networks are well developed. In these methods, heat exchanger network models are based on network details, such as stream connections between heat exchangers, heat transfer area of individual units, etc. The consideration of these network details is important to design and optimise crude oil distillation systems. On the other hand, the distillation process model to be coupled with the heat exchanger network model needs to be simple and robust enough to be included in an optimisation framework. If distillation models and heat recovery models can be combined effectively, then there are not just opportunities for design and retrofit, but also for operational optimisation. One of the big challenges to progress the application of this approach is the effective generation of reduced distillation models. Short-cut distillation models can be used, but many other options are available, such as the use of artificial neural networks. This paper reviews various crude oil distillation modelling approaches and highlights the areas of application of these different approaches. An example illustrates the computational performance of reduced and rigorous crude oil distillation models.

Bookmarks Related papers MentionsView impact