Ashfaq Iftakher | Bangladesh University of Engineering & Technology (original) (raw)
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Papers by Ashfaq Iftakher
Computer Aided Chemical Engineering
Computers & Chemical Engineering
31st European Symposium on Computer Aided Process Engineering
Abstract This paper presents a toolbox for driving force based integrated design and control of r... more Abstract This paper presents a toolbox for driving force based integrated design and control of reactive distillation (RD) systems. The toolbox provides links to other necessary tools for the design, simulation, and analysis of RD systems. One convenient feature of the toolbox is that it guides the user through the steps of problem definition, including the selection of design-control variables and associated data-flow as well as the generation of the necessary scripts for links to simulation and analysis software. The implementation of this new toolbox is tested through binary/multielement single/double feed RD systems. For each RD system, the needed driving force calculations are done in ProCAPE. Steady state simulation and analysis are performed through ASPEN PLUS, MoT, or ProCACD. Dynamic open and closed-loop PI or MPC simulations are performed in ASPEN PLUS Dynamics, MoT, or MATLAB. The goal of the tests is to confirm the advantages of using the toolbox for studies involving RD systems in terms of fast, reliable, and efficient solution and analysis of integrated design-control problems.
Industrial & Engineering Chemistry Research, 2022
In this work, integrated design and control of Reactive Distillation (RD) column operating under ... more In this work, integrated design and control of Reactive Distillation (RD) column operating under Model Predictive Controller (MPC) is presented. At first, a design target is defined, and the RD column is designed based on the element concept at the maximum driving force. After that, the steady state simulation is carried out in ASPEN PLUS that satisfies the design target. Next, the flow driven dynamic system is linearized in ASPEN PLUS Dynamics and the state space matrices are obtained. Using the matrices, MPC closed-loop simulation is carried out in MATLAB. To quantify both the steady state and dynamic operation, a multi objective function is defined that takes into account both the design (total energy consumption, total carbon footprint), and the control performance (Integral Absolute Error, total variation of input, relative gain array, Niederlinski Index). For further verification, an alternative design based on non-maximal driving force is also obtained, and the corresponding ...
Computer Aided Chemical Engineering
2018 10th International Conference on Electrical and Computer Engineering (ICECE)
Industrial & Engineering Chemistry Research
Journal of Chemical Engineering
Nanotechnology brings huge promise in the research and development in industrial sectors to incre... more Nanotechnology brings huge promise in the research and development in industrial sectors to increase the efficiency and productivity. It deals with matters at as small as billionth of a meter scale. At this nano scale, the physiochemical properties of matter dramatically change due to quantum confinement. So there are huge possibilities in developing applications by harnessing the nano scaled physiochemical properties of nano materials in numerous fields. Bangladesh, being a developing country lacks the proper guideline and investment to take advantage of this technology. Nanotechnology has a huge prospect in this country especially in agriculture and garments sector. If applied properly, nanotechnology can boost the economic growth as well as improve the capacity and quality in agriculture, food and other industrial sectors. This paper describes the current status of Nanotech research and development, applications in major industrial sectors, future prospects in the context of Bang...
Industrial & Engineering Chemistry Research
Computer Aided Chemical Engineering
Computers & Chemical Engineering
31st European Symposium on Computer Aided Process Engineering
Abstract This paper presents a toolbox for driving force based integrated design and control of r... more Abstract This paper presents a toolbox for driving force based integrated design and control of reactive distillation (RD) systems. The toolbox provides links to other necessary tools for the design, simulation, and analysis of RD systems. One convenient feature of the toolbox is that it guides the user through the steps of problem definition, including the selection of design-control variables and associated data-flow as well as the generation of the necessary scripts for links to simulation and analysis software. The implementation of this new toolbox is tested through binary/multielement single/double feed RD systems. For each RD system, the needed driving force calculations are done in ProCAPE. Steady state simulation and analysis are performed through ASPEN PLUS, MoT, or ProCACD. Dynamic open and closed-loop PI or MPC simulations are performed in ASPEN PLUS Dynamics, MoT, or MATLAB. The goal of the tests is to confirm the advantages of using the toolbox for studies involving RD systems in terms of fast, reliable, and efficient solution and analysis of integrated design-control problems.
Industrial & Engineering Chemistry Research, 2022
In this work, integrated design and control of Reactive Distillation (RD) column operating under ... more In this work, integrated design and control of Reactive Distillation (RD) column operating under Model Predictive Controller (MPC) is presented. At first, a design target is defined, and the RD column is designed based on the element concept at the maximum driving force. After that, the steady state simulation is carried out in ASPEN PLUS that satisfies the design target. Next, the flow driven dynamic system is linearized in ASPEN PLUS Dynamics and the state space matrices are obtained. Using the matrices, MPC closed-loop simulation is carried out in MATLAB. To quantify both the steady state and dynamic operation, a multi objective function is defined that takes into account both the design (total energy consumption, total carbon footprint), and the control performance (Integral Absolute Error, total variation of input, relative gain array, Niederlinski Index). For further verification, an alternative design based on non-maximal driving force is also obtained, and the corresponding ...
Computer Aided Chemical Engineering
2018 10th International Conference on Electrical and Computer Engineering (ICECE)
Industrial & Engineering Chemistry Research
Journal of Chemical Engineering
Nanotechnology brings huge promise in the research and development in industrial sectors to incre... more Nanotechnology brings huge promise in the research and development in industrial sectors to increase the efficiency and productivity. It deals with matters at as small as billionth of a meter scale. At this nano scale, the physiochemical properties of matter dramatically change due to quantum confinement. So there are huge possibilities in developing applications by harnessing the nano scaled physiochemical properties of nano materials in numerous fields. Bangladesh, being a developing country lacks the proper guideline and investment to take advantage of this technology. Nanotechnology has a huge prospect in this country especially in agriculture and garments sector. If applied properly, nanotechnology can boost the economic growth as well as improve the capacity and quality in agriculture, food and other industrial sectors. This paper describes the current status of Nanotech research and development, applications in major industrial sectors, future prospects in the context of Bang...
Industrial & Engineering Chemistry Research