A pinch‐like targeting framework for systematic thermal process intensification

Bâldea, Michael

doi:10.1002/aic.15971

Cited by 5 publications

(2 citation statements)

References 23 publications

(19 reference statements)

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“…Process intensification (PI) can offer methods of supporting sustainable industrial growth through a variety of tools. Some of these tools include the use of a pinch‐like targeting framework that can combine two or more heat sources into a single intensified device aimed at thermal process intensification, and the use of the Infinite DimEnsionAl State‐space (IDEAS) conceptual framework, which has been applied to topics such as reactive distillation systems, and energetically enhanced reforming (EER) . Along with these intensification frameworks, is the integration of multi‐functional units such as membrane reactors (MRs).…”

Section: Introductionmentioning

confidence: 99%

Intensified energetically enhanced steam methane reforming through the use of membrane reactors

Pichardo

Manousiouthakis

2019

AIChE Journal

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This work focuses on the implementation of membrane reactors (MRs) in the production of hydrogen through steam-methane reforming (SMR). A novel equilibrium MR model featuring Gibbs Free Energy Minimization is introduced and applied to the SMR-MR process. In addition, the concept of "energetically enhanced steam methane reforming (EER)," which allows for the use of a hybrid (methane combustion/renewable energy) energy supply in the production of hydrogen, is intensified. The UNISIM software (Honeywell™) is used to create a range of intensified flowsheets depicting the proposed IEER-MR process as well as two baseline flowsheets depicting "a standard SMR-MR process" and "a fully exothermic EER process." Heat integration studies are carried out on the developed flowsheets, and the baseline designs are compared to the IEER-MR designs to identify energetic intensification.

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Section: Introductionmentioning

confidence: 99%

Intensified energetically enhanced steam methane reforming through the use of membrane reactors

Pichardo

Manousiouthakis

2019

AIChE Journal

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“…Specifically, among all the production sectors concerned with these challenges, resource utilization in the chemical industry toward energy conservation and waste reduction is receiving significant attention. While finding more economic and sustainable ways to produce desired products has been a major focus, − most efforts have been devoted to equipment design. − However, due to various interactions existing within a process plant involving many production routes, a system level targeting would be favored so as to account for trade-offs from a holistic perspective. This type of holistic approach is also referred to as process integration which improves processes to reduce consumption of fresh resources or harmful emissions and emphasizes the unity of the process .…”

Section: Introductionmentioning

confidence: 99%

Process Integration Using Block Superstructure

Demirel

Hasan

2018

Ind. Eng. Chem. Res.

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We propose a general mathematical model for various process integration problems, involving mass integration, heat integration, simultaneous mass and heat integration, and property integration. The process units, including regenerators/interceptors, mixers, and splitters are represented using blocks. The blocks are arranged in a two-dimensional grid, and the arrangement of these blocks gives rise to various process integration networks. The existence of connecting streams between adjacent blocks and jump flows among all blocks enables the necessary interaction between different blocks via material and energy flows. The size of the block superstructure is determined by the number of layers with mixing operations, process units, product streams, and heat integration stages. The general process integration model is formulated as a mixed-integer nonlinear optimization (MINLP) problem with the minimization of total annual cost as the objective. We demonstrate our approach using four case studies from the process integration literature.

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The FluxMax approach for simultaneous process synthesis and heat integration: Production of hydrogen cyanide

2019

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Resource and energy efficiency are essential in process synthesis of chemical plants as they combine economic with ecological benefits. The two main targets of the process synthesis problem-mass and energy flux optimization-are typically split into two steps: single unit optimization and subsequent energy integration preventing the identification of the globally optimal solution. This article presents a single-step procedure for resource-efficient process synthesis through simultaneous heat and mass flux optimization called FluxMax approach which is demonstrated for the production of hydrogen cyanide (HCN). The impact of simultaneous heat integration on the optimal process structure is demonstrated and two resource-optimal processes for HCN production are identified consisting of a combination of different reactor and recycling strategies reducing total variable cost by 68 %. For convex objective functions, the globally most resource-efficient process is identified highlighting the potential of the FluxMax approach for site planning and retrofitting of existing plants.

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A pinch‐like targeting framework for systematic thermal process intensification

Cited by 5 publications

References 23 publications

Intensified energetically enhanced steam methane reforming through the use of membrane reactors

Intensified energetically enhanced steam methane reforming through the use of membrane reactors

Process Integration Using Block Superstructure

The FluxMax approach for simultaneous process synthesis and heat integration: Production of hydrogen cyanide

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