A novel Graphical Gibbs Energy-Driving Force Method for the Optimal Design of Non-reactive and Reactive Distillation Columns

2018 ◽  
pp. 905 ◽  
Author(s):  
Mauricio Sales-Cruz ◽  
Rafiqul Gani ◽  
Eduardo Perez-Cisneros
Keyword(s):  
Optimal Design ◽  
Gibbs Energy ◽  
Driving Force ◽  
Reactive Distillation ◽  
Distillation Columns ◽  
Force Method

A Gibbs energy-driving force method for the optimal design of non-reactive and reactive distillation columns

2019 ◽  
Vol 128 ◽  
pp. 53-68 ◽  
Author(s):  
Teresa Lopez-Arenas ◽  
Seyed Soheil Mansouri ◽  
Mauricio Sales-Cruz ◽  
Rafiqul Gani ◽  
Eduardo S. Pérez-Cisneros
Keyword(s):  
Optimal Design ◽  
Gibbs Energy ◽  
Driving Force ◽  
Reactive Distillation ◽  
Distillation Columns ◽  
Force Method

ENERGY EFFICIENT DISTILLATION COLUMNS ANALYSIS FOR AN AROMATIC SEPARATION PROCESS

2016 ◽  
Vol 78 (3-2) ◽  
Author(s):  
Muhammad Zakwan Zaine ◽  
Mohd. Faris Mustafa ◽  
Onn Hassan ◽  
Kamarul Asri Ibrahim ◽  
Norazana Ibrahim ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Driving Force ◽  
Energy Savings ◽  
Energy Analysis ◽  
Optimal Sequence ◽  
Separation Unit ◽  
Distillation Columns ◽  
Improve Energy Efficiency ◽  
Force Method

Energy savings is a major challenge in distillation operations. However, there is still one problem, which is how do we improve the energy efficiency of the existing distillation column systems without major modifications. Recently, a new energy efficient distillation columns methodology that will be able to improve energy efficiency of the existing separation systems without having major modifications has been developed. Therefore, the objective of this paper is to present a new improvement of the existing methodology by designing an optimal sequence of energy efficient distillation columns using a driving force method. Accordingly, the methodology is divided into four hierarchical sequential stages: i) existing sequence energy analysis, ii) optimal sequence determination, iii) optimal sequence energy analysis, and iv) energy comparison and economic analysis. The capability of this methodology is tested in designing an optimal synthesis of energy efficient distillation columns sequence of an aromatics separation unit. The existing aromatics separation unit consists of six compounds (Methylcyclopentane (MCP), Benzene, Methylcyclohexane (MCH), Toluene, m-Xylene and o-Xylene) with five direct sequence distillation columns being simulated using a simple and reliable short-cut method and rigorously tested within an Aspen HYSYS® simulation environment. The energy and economic analyses show that the optimal sequence determined by the driving force method has a better energy reduction with a total of 6.78% energy savings and a return of investment of 3.10 with a payback period of 4 months. It can be concluded that, the sequence determined by the driving force method is not only capable in reducing energy consumption, but also has a better economic cost for an aromatic separation unit

SUSTAINABLE ENERGY EFFICIENCY DISTILLATION COLUMNS SEQUENCE DESIGN OF AROMATIC SEPARATION UNIT

2016 ◽  
Vol 78 (6-12) ◽  
Author(s):  
Muhammad Zakwan Zaine ◽  
Mohd. Faris Mustafa ◽  
Kamarul Asri Ibrahim ◽  
Norazana Ibrahim ◽  
Mohd. Kamaruddin Abd. Hamid
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Driving Force ◽  
Sustainable Energy ◽  
Optimal Sequence ◽  
Design Modification ◽  
Separation Unit ◽  
Distillation Columns ◽  
Force Method ◽  
Sustainability Analysis

Distillation operations became a major concern within sustainability challenge, which it becomes a primary target of energy saving efforts in industrially developed countries. However, there is still one problem, which is how do we improve the energy efficiency of the existing distillation columns systems by considering the sustainability criteria without having major modifications. Therefore, the objective of this paper is to present new improvement of existing methodology by including a sustainability analysis to design an optimal sequence of energy efficient distillation columns. Accordingly, the methodology is divided into four hierarchical sequential stages: i) existing sequence sustainability analysis, ii) optimal sequence determination, iii) optimal sequence sustainability analysis, and iv) sustainability comparison and design modification. The capability of this methodology is tested in designing an optimal sustainable energy efficient distillation columns sequence of aromatics separation unit using a simple and reliable short-cut method within Aspen HYSYS® simulation environment. The energy and sustainability analysis is performed and shows that the optimal sequence determined by the driving force method has better energy reduction with total of 6.78 % energy savings and 0.16 % sustainability reduction compared to existing sequence with. In addition, the economic analysis shows that the return of investment of 3.10 with payback period of 4 months. It can be concluded that, the sequence determined by the driving force method is not only capable in reducing energy consumption, but also has better sustainability index for aromatic separation unit.

ENERGY EFFICIENCY IMPROVEMENT FOR NATURAL GAS LIQUIDS DIRECT-SPLITTER-DIRECT SEQUENCE FRACTIONATION UNIT

2016 ◽  
Vol 78 (6-12) ◽  
Author(s):  
Ahmad Nafais Rahimi ◽  
Mohd. Faris Mustafa ◽  
Muhammad Zakwan Zaine ◽  
Norazana Ibrahim ◽  
Kamarul Asri Ibrahim ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Driving Force ◽  
Energy Analysis ◽  
Direct Sequence ◽  
Sequence Determination ◽  
Optimal Sequence ◽  
Distillation Columns ◽  
Force Method ◽  
Energy Efficiency Improvement ◽  
Fractionation Unit

The objective of this paper is to present the study and analysis of the energy saving improvement for the NGLs Direct-Splitter-Direct fractionation sequence plant by using driving force method. To perform the study and analysis, the energy efficient distillation columns (EEDCs) methodology is developed. Basically, the methodology consists of four hierarchical steps; Step 1: Existing Sequence Energy Analysis, Step 2: Optimal Sequence Determination, Step 3: Optimal Sequence Energy Analysis, and Step 4: Energy Comparison. The capability of this methodology is tested in designing an optimal energy efficient direct-splitter-direct sequence of NGLs fractionation unit. The results show that the maximum of 10.62 % energy reduction was able to achieve by changing the sequence suggested by the driving force method. It can be concluded that, the sequence determined by the driving force method is able to reduce energy used for a NGLs fractionation. All of this findings show that the methodology is able to design energy efficient for NGLs fractionation sequence in an easy, practical and systematic manner.

scholarly journals Optimal Synthesis of Energy Efficient Distillation Columns Sequence Using Driving Force Method

2015 ◽  
Vol 9 (7) ◽  
pp. 154
Author(s):  
Ahmad Nafais Rahimi ◽  
Mohd. Faris Mustafa ◽  
Muhammad Zakwan Zaine ◽  
Norazana Ibrahim ◽  
Kamarul Asri Ibrahim ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Driving Force ◽  
Distillation Column ◽  
Energy Analysis ◽  
Separation Process ◽  
Hydrocarbon Mixture ◽  
Optimal Sequence ◽  
Distillation Columns ◽  
Force Method ◽  
Mixture Separation

This paper presents the study of the optimal synthesis of energy efficient distillation columns (EEDCs) sequenceby using the driving force method. In order to perform the study and analysis, the EEDCs sequence methodologyhas been developed. Accordingly, the methodology consists of four hierarchical sequential steps; Step 1: ExistingSequence Energy Analysis, Step 2: Optimal Sequence Determination, Step 3: Optimal Sequence Energy Analysis,and Step 4: Energy Comparison. The capability of this methodology has been tested in designing minimumenergy distillation column sequence for hydrocarbon mixture separation process. The results show that themaximum of 39.6 % energy reduction was able to achieve by changing the sequence suggested by the drivingforce method. It can be concluded that, the sequence determined by the driving force method is able to reduceenergy requirement for hydrocarbon mixture separation process. All of this findings show that the methodologyis able to design minimum energy distillation column sequence for hydrocarbon mixture separation process in aneasy, practical and systematic manner.

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