Hydrogen network retrofit via flexibility analysis: The steady-state flexibility index

Birjandi, Mohammad Reza Sardashti; Shahraki, Farhad

doi:10.1016/j.cherd.2016.10.017

Cited by 15 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…47 In addition to ED, the FI has been applied to various aspects of chemical processes as well. For instance, Sardashti Birjandi et al 48 proposed a systematic approach to optimize hydrogen distribution networks using the steady-state FI. This method improves the hydrogen network's operation resiliency and efficiency, resulting in cost savings and increased profitability.…”

Section: Introductionmentioning

confidence: 99%

Toward a Flexible Design for the Bioethanol Dehydration Using Extractive Distillation. Part 1: Steady-State Design and Optimization

Tsai,

Ang,

Kong

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

This study introduces a novel approach to the initial design of bioethanol dehydration, incorporating process fluctuations. Unlike previous studies, which overlooked fluctuations, we aim to determine the feasible operating range of the process by considering them. Initially, the bioethanol dehydration base case was optimized individually for cost and flexibility, resulting in the most economical and flexible process. However, a trade-off between these objectives was observed, leading to the optimization of an integrated function (TAC FI ) that balances the total annual cost (TAC) and flexibility index (FI). The optimized design can tolerate a 21.3% decrease in the feed flowrate and a 21.3% increase in ethanol concentration, exceeding typical fluctuation ranges observed in dynamic performance testing. This highlights the significant controllability potential of the design, emphasizes the importance of considering operational flexibility during the early phase of process design, and offers valuable insights for industrial applications of extractive distillation for bioethanol dehydration.

show abstract

Section: Introductionmentioning

confidence: 99%

Toward a Flexible Design for the Bioethanol Dehydration Using Extractive Distillation. Part 1: Steady-State Design and Optimization

Tsai,

Ang,

Kong

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Recently, Sardashti et al. used a combined methodology, which included the steady‐state flexibility index and enhancing the efficiency of purifiers. Both the investigation of hydrogen network flexibility under severe operation uncertainty and reducing streams to purifiers by consideration of the inlet feed purity of purifiers are applied in retrofit design.…”

Section: Problem Statementmentioning

confidence: 99%

Hydrogen and CO₂ Management in the Refinery with Fuzzy Multiobjective Nonlinear Programming

Birjandi

Shahraki

2019

Chem Eng & Technol

Self Cite

View full text Add to dashboard Cite

An innovative approach for optimization of the hydrogen network in a refinery is presented. The optimization problem was formulated as a fuzzy-based multiobjective nonlinear programming (FMONLP), aiming at simultaneous minimization of the total annual cost and CO 2 emission. This is achieved by defining an objective function with a weighted sum of the annual cost and CO 2 emission. The weighting factors are considered as fuzzy parameters which are described based on the experts' experiences. The applicability of the proposed approach is illustrated by optimization of an Iranian refinery hydrogen network.

show abstract

“…Considering both the discrete operating points and their fluctuations, Liang et al (2016) proposed a flexible design method for multi-period hydrogen networks based on the concept of flexibility index (Swaney and Grossmann 1985). Sardashti Birjandi et al (2017) proposed a retrofit design method of hydrogen network to analyze the operating flexibility under the uncertainties of the purities of hydrogen sources and the purified products. Nevertheless, it is more difficult to solve the optimization model of a multi-period hydrogen network than that of a single-period hydrogen network.…”

Section: Introductionmentioning

confidence: 99%

Strategies of Merging Compressors for Capital Cost Reduction in Hydrogen Networks Synthesis

Liang

Liu

2017

Process Integr Optim Sustain

View full text Add to dashboard Cite

For integration of hydrogen networks by mathematical programing, the utilization of a dedicated compressor in each match of hydrogen source and hydrogen sink can avoid the non-linear terms arising from the mixing inlet streams and the unknown pressures of compressors, which greatly reduced the complexity in solving the hydrogen network optimization models. However, it may lead to large number of compressors and higher capital costs. To solve this problem, a method of compressor merging is proposed in this work, in which two strategies of merging compressors are proposed, namely, the hydrogen sources oriented compressors merging strategy (HSCM) and the hydrogen sinks oriented compressors merging strategy (HKCM). The proposed strategies consider the upper capacity bound of a compressor and the capital cost of the compressors, and do not change the optimal matches of hydrogen sources and hydrogen sinks. A case study is employed to exemplify the implementation of the proposed method. The results show that the proposed strategies can reduce the number and the capital cost of compressors effectively. And the operating flexibility of the hydrogen network is also improved.

show abstract

Hydrogen network retrofit via flexibility analysis: The steady-state flexibility index

Cited by 15 publications

References 36 publications

Toward a Flexible Design for the Bioethanol Dehydration Using Extractive Distillation. Part 1: Steady-State Design and Optimization

Toward a Flexible Design for the Bioethanol Dehydration Using Extractive Distillation. Part 1: Steady-State Design and Optimization

Hydrogen and CO₂ Management in the Refinery with Fuzzy Multiobjective Nonlinear Programming

Strategies of Merging Compressors for Capital Cost Reduction in Hydrogen Networks Synthesis

Contact Info

Product

Resources

About

Hydrogen network retrofit via flexibility analysis: The steady-state flexibility index

Cited by 15 publications

References 36 publications

Toward a Flexible Design for the Bioethanol Dehydration Using Extractive Distillation. Part 1: Steady-State Design and Optimization

Toward a Flexible Design for the Bioethanol Dehydration Using Extractive Distillation. Part 1: Steady-State Design and Optimization

Hydrogen and CO2 Management in the Refinery with Fuzzy Multiobjective Nonlinear Programming

Strategies of Merging Compressors for Capital Cost Reduction in Hydrogen Networks Synthesis

Contact Info

Product

Resources

About

Hydrogen and CO₂ Management in the Refinery with Fuzzy Multiobjective Nonlinear Programming