Simultaneous optimization strategy for synthesizing heat exchanger networks with multi-stream mixers

Dong, Hongguang; Lin, Chih-Yao; Chang, Ching-Chun

doi:10.1016/j.cherd.2007.12.003

Cited by 12 publications

(7 citation statements)

References 13 publications

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“…Notice that, in this model, every hot stream is allowed to be matched with more than one cold stream and vice versa. This practice is adopted to improve the search efficiency in solution process (Papalexaddri and Pistikopoulos, 1994;Dong et al, 2008). The water-using operations in OP_WAN are assumed to be always present.…”

Section: Process Operatormentioning

confidence: 99%

Simultaneous optimization approach for integrated water-allocation and heat-exchange networks

Dong

Lin

Chang

2008

Chemical Engineering Science

Self Cite

112

108

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Section: Process Operatormentioning

confidence: 99%

Simultaneous optimization approach for integrated water-allocation and heat-exchange networks

Dong

Lin

Chang

2008

Chemical Engineering Science

Self Cite

112

108

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“…Dong et al [223][224][225][226][227] have recently recent proposed MINLP models that incorporate the design of heat exchange networks with water networks, based on the state-space superstructure proposed by Bagajewicz et al [228,229]. Ruiz and Grossmann [79] present a simplified GDP formulation of the WWTN, as an illustration of the bound tightening technique.…”

Section: Process Synthesismentioning

confidence: 99%

Review of Mixed‐Integer Nonlinear and Generalized Disjunctive Programming Methods

Trespalacios

Grossmann

2014

Chemie Ingenieur Technik

155

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This work presents a review of the applications of mixed-integer nonlinear programming (MINLP) in process systems engineering (PSE). A review on the main deterministic MINLP solution methods is presented, including an overview of the main MINLP solvers. Generalized disjunctive programming (GDP) is an alternative higher-level representation of MINLP problems. This work reviews some methods for solving GDP models, and techniques for improving MINLP methods through GDP. The paper also provides a high-level review of the applications of MINLP in PSE, particularly in process synthesis, planning and scheduling, process control and molecular computing.

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“…The existing distillation process was optimized by changing key operating parameters, while simultaneously accounting for hydraulic limitations and the design and performance of the existing HEN. Dong et al 46 proposed a systematic procedure to incorporate the options of merging and/or splitting process streams from multiple origins in the HEN design. Feng et al 47 introduced the principles to define a boundary for heat integration in a petrochemical complex before the HEN was optimized.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Optimization of the Complex Fractionator and Heat Exchanger Network Considering the Constraints of Variable Heat Removals in Delayed Coking Units

Yang

Zhang

et al. 2014

Ind. Eng. Chem. Res.

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Heat exchanger networks in process plants recover usable heat from hot to cold process streams such as feedstock, product, and pumparound streams. In this paper, we focus on the design of a heat exchanger network for removing variable heat from a complex fractionator in delayed coking units. A superstructure-based mixed integer nonlinear programming model is presented to minimize the total annual cost, including the heat exchanger area cost and the utility cost. In the proposed model, duties and operating parameters of pumparounds are optimized and the optimized structure of the heat exchanger network is defined simultaneously. Meanwhile, two modifications are applied to improve the simultaneous optimization model for the integrated system of the complex fractionator and heat exchanger network. First, a predominant calculation method for the log mean temperature difference is introduced in order to obtain the results closest to the actual process; second, nonconstant specific heat of process streams with pseudocomponents is considered to represent real thermal properties of process streams in the process model. A case study is carried out to demonstrate simultaneous optimization of the fractionator and heat exchanger network. The optimal design for the model is compared to the one with conventional design heuristics. By applying the proposed model to integrate the operation of the fractionator and heat exchanger network in a delayed coking unit, the total annual cost is reduced by 2.1 million CNY considering the constraints of the heat removals.

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Simultaneous optimization strategy for synthesizing heat exchanger networks with multi-stream mixers

Cited by 12 publications

References 13 publications

Simultaneous optimization approach for integrated water-allocation and heat-exchange networks

Simultaneous optimization approach for integrated water-allocation and heat-exchange networks

Review of Mixed‐Integer Nonlinear and Generalized Disjunctive Programming Methods

Simultaneous Optimization of the Complex Fractionator and Heat Exchanger Network Considering the Constraints of Variable Heat Removals in Delayed Coking Units

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