<scp>Computer‐aided</scp> process intensification of natural gas to methanol process

Monjur, Mohammed Sadaf; Hasan, M. M. Faruque

doi:10.1002/aic.17622

Cited by 6 publications

(3 citation statements)

References 72 publications

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“…This is a unique capability for coming up with innovative designs without any pre-postulation of candidate designs. A general description of the use of building block representation can be found elsewhere. − …”

Section: Spice_ed Frameworkmentioning

confidence: 99%

“…UC IL , UC elec , UC hu , UC cu , and UC ref are the unit cost of IL, electricity, hot utility, cold utility, and refrigerant, respectively. We consider IL cost, electricity, hot utility, cold utility, and refrigerant cost to be $1000/kg, $19.4/GJ, $9.9/GJ, $1.9/GJ, and $18/GJ, respectively. In the seventh term, the parameter σ main is used to estimate the annual maintenance cost as a percentage of the fixed capital investment (FCI).…”

Section: Spice_ed Frameworkmentioning

confidence: 99%

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Separation Process Synthesis for High-GWP Refrigerant Mixtures: Extractive Distillation using Ionic Liquids

Monjur

Iftakher

Hasan

2022

Ind. Eng. Chem. Res.

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Due to high global warming potential (GWP) of hydrofluorocarbons (HFCs), the separation and recovery of HFCs from different refrigerant mixtures is an important issue. Most HFC mixtures are azeotropic in nature, thereby rendering the conventional distillation-based separation difficult and energy intensive. Extractive distillation (ED) with ionic liquid (IL) as solvent provides an attractive strategy for selective separation of HFC mixtures. However, systematic design and optimization of ED-based separation processes is nontrivial. In this work, we present SPICE_ED which is a software framework for the detailed design, synthesis, and techno-economic analysis of ED-based separation processes. The framework employs a building block representation followed by superstructure optimization that is able to automatically generate numerous design solutions and screen the best without requiring prior expert knowledge of candidate configurations. For a given IL as solvent and a set of design specifications, one can automatically determine the feasibility of the solvent and obtain the optimal process flowsheets that correspond to minimum energy consumption, minimum separation cost, or minimum emission/waste. We demonstrate the capability of SPICE_ED for the separation of R-410A (50 wt % R-32 and 50 wt % R-125) using [bmim][PF 6 ], a commonly used IL. Our optimized design requires an equivalent work of only 338.2 kJ/kg R-410A, which is about 48% less than the previously reported value of 656 kJ/kg. The newly identified design also achieves more than 47% and 27% reductions in CO 2 -equivalent emission (sustainability) and cost, respectively. Through multiobjective optimization, we further identify an operating regime to separate R-410A at a near-minimum cost without significantly increasing the energy consumption and emission. The processes obtained from SPICE_ED show excellent agreement with the key performance metrics when simulated in Aspen Plus, thereby establishing confidence in our designs as realistic and implementable.

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Section: Spice_ed Frameworkmentioning

confidence: 99%

Section: Spice_ed Frameworkmentioning

confidence: 99%

Separation Process Synthesis for High-GWP Refrigerant Mixtures: Extractive Distillation using Ionic Liquids

Monjur

Iftakher

Hasan

2022

Ind. Eng. Chem. Res.

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“…Thus, producing olefins from other resources is of great interest in recent years. Methanol to olefins (MTO) becomes a promising technology which has the potential to mitigate the dilemma for methanol can be produced from different resources, for example, coal, natural gas, , and biomass . Nevertheless, MTO generates notable byproducts of hydrocarbons, , the profits of which are much lower than ethylene and propylene.…”

Section: Introductionmentioning

confidence: 99%

Olefin Production via Methanol Integrated with Light Hydrocarbon Conversion: Novel Process Designs, Techno-Economic Analysis, and Environmental Analysis

Jiang,

Rong,

Feng

2023

Ind. Eng. Chem. Res.

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Olefin production via methanol from different resources is a promising technology, which has been widely studied. However, there are many hydrocarbons produced in methanol to olefins except ethylene and propylene which are of high values. This work proposes four novel designs by integrating olefin production via methanol with a light hydrocarbon conversion unit to increase the yield of ethylene and propylene. Based on the data of mass and energy balances from Aspen HYSYS, the four novel designs are systematically compared to their profitability and sustainability from the techno-economic and environmental aspects. The results present that the yield of ethylene and propylene is improved significantly; almost all the hydrocarbon byproducts are converted into ethylene and propylene. In addition, the result of techno-economic analysis shows that producing ethylene and propylene from the coal-based design is the most attractive design among the five designs, about 113.16% as much as that of the conventional design. The environmental analysis indicates that the life cycle greenhouse gas emission of producing ethylene and propylene from the biomass-based design, which has the best environmental performance, is only 49.46% of that from the conventional design.

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An Overview of Computer‐aided Molecular and Process Design

Iftakher

Monjur

Hasan

2023

Chemie Ingenieur Technik

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Identifying sustainable chemical processes often depends on the choice of enabling materials that directly influence the overall performance. Matching property targets while incorporating adequate process knowledge is essential for optimal material selection. Multi-scale decisions need to be taken simultaneously to determine the optimal process configurations, operating conditions, and material structures. Integrating molecular to process scale decisions within an equation-oriented optimization framework leads to large-scale mixed-integer nonlinear programs (MINLP). Over the years, several solution approaches have been suggested to tackle this issue. Here, the current state-of-the-art in the field of computer-aided molecular and process design (CAMPD) is discussed and key challenges and open questions are highlighted that may stimulate future research.

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Computer‐aided process intensification of natural gas to methanol process

Cited by 6 publications

References 72 publications

Separation Process Synthesis for High-GWP Refrigerant Mixtures: Extractive Distillation using Ionic Liquids

Separation Process Synthesis for High-GWP Refrigerant Mixtures: Extractive Distillation using Ionic Liquids

Olefin Production via Methanol Integrated with Light Hydrocarbon Conversion: Novel Process Designs, Techno-Economic Analysis, and Environmental Analysis

An Overview of Computer‐aided Molecular and Process Design

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