Internal coupling process of membrane/distillation column hybrid configuration for ethylene/ethane separation

Xu, Yuting; Ya, Tang; He, Chang; Shu, Yidan; Chen, Qing L.; Zhang, Bing J.

doi:10.1016/j.cep.2022.108982

Cited by 6 publications

(3 citation statements)

References 45 publications

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“…However, as the types of layout equipment and engineering conditions become more complex, the gap between the solution based on the current model and the actual situation becomes larger, which can be reflected in example 4. In this case, the solution based on model A.3 did not consider the stability of the workshop structure, nor did it consider the constraint of the fixed relative position of the tower equipment and its associated equipment [43]. For example, the condenser should be placed on the top of the tower equipment, and the reboiler should be installed on the bottom of the tower equipment.…”

Section: Engineering Experience Constraintsmentioning

confidence: 99%

Efficient Approaches for Layout Problems of Large Chemical Plants Based on MILP Model

Zhou

et al. 2023

Processes

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This paper presents two novel solution approaches for addressing large-scale multi-floor process plant layout problems. Based on the mixed integer linear programming (MILP) model, the first solution approach employs a multi-directional search strategy while the second improves solution efficiency by reducing model size through an iterative framework. Both approaches determine the spatial arrangement of the plant equipment considering equipment-floor allocation, non-overlapping constraints, tall equipment penetrating multiple floors, etc. The computational results indicate that the proposed approaches achieved potential cost savings for four illustrative examples when compared to the previous studies. Finally, engineering experience constraints were included to represent a more complex industrial situation, and their applicability was tested with the last example.

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Section: Engineering Experience Constraintsmentioning

confidence: 99%

Efficient Approaches for Layout Problems of Large Chemical Plants Based on MILP Model

Zhou

et al. 2023

Processes

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“…Few conventional technologies are employed for removing CO 2 from C 2 H 4, including absorption, adsorption, cryogenic distillation and membrane separation technologies [3]. The challenges in using cryogenic distillation are the high cost as well as energy inefficiency [4].…”

Section: Introductionmentioning

confidence: 99%

Ethylene Recovery via Pebax-Based Composite Membrane: Numerical Optimization

et al. 2023

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Membrane technology, particularly polymeric membranes, is utilized in major industrial ethylene recovery owing to the very convenient and robust process. Thus, in this paper, a composite membrane (CM) comprising SAPO-34 and Pebax-1657 was employed to conduct a separation performance under two operating conditions, including temperatures and pressures, ranging from 25.0–60.0 °C and 3.5–10.0 bar, respectively. CO2 permeability and CO2/C2H4 ideal selectivity values that ranged from 105.68 to 262.86 Barrer and 1.81 to 3.52, respectively, were obtained via the experimental works. The separation of carbon dioxide (CO2) from ethylene (C2H4) has then been optimized using response surface methodology (RSM) by adopting a central composite design (CCD) method. As a result, the ideal operational conditions were discovered at a temperature of 60.0 °C and pressure of 10.0 bar with the maximum CO2 permeability of 233.62 Barrer and CO2/C2H4 ideal selectivity of 3.22. The typical discrepancies between experimental and anticipated data for CO2 permeability and CO2/C2H4 ideal selectivity were 1.67% and 3.10%, respectively, demonstrating the models’ validity. Overall, a new combination of Pebax-1657 and SAPO-34 composite membrane could inspire the latest understanding of the ethylene recovery process.

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“…25,26 Distillation is one of the key technologies to separate mixtures. 27,28 However, the high boiling point of PDI requires high energy consumption for distillation. At present, with the sharp increase of global energy consumption and the rapid growth of energy costs, it is urgent to nd green technologies that can signicantly save energy.…”

Section: Introductionmentioning

confidence: 99%

An effective purification of double-effect distillation for bio-based pentamethylene diisocyanate

He,

Tang,

et al. 2023

RSC Adv.

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Internal coupling process of membrane/distillation column hybrid configuration for ethylene/ethane separation

Cited by 6 publications

References 45 publications

Efficient Approaches for Layout Problems of Large Chemical Plants Based on MILP Model

Efficient Approaches for Layout Problems of Large Chemical Plants Based on MILP Model

Ethylene Recovery via Pebax-Based Composite Membrane: Numerical Optimization

An effective purification of double-effect distillation for bio-based pentamethylene diisocyanate

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