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A study of general flowsheet synthesis

Flowsheet synthesis.

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Procedure for Flowsheet Synthesis

N2 - A discussion on a demethanizer process, which was characterized by interactions between the complex distillation column and other flowsheet units, including the turbo-expander, flash units, multistream exchangers, and refrigeration system, covers a systematic approach for demethanizer flowsheet synthesis to generate cost-effective designs; a semi-rigorous boundary value method for the design of complex demethanizer columns for application within an optimization framework for process synthesis and evaluation; a simplified flowsheet simulation model based on shortcut models to account for various configurations and inter-connections in the demethanizer process; a methodology accounting for heat integration in multistream exchangers; a generalized superstructure for demethanizer flowsheet synthesis that includes various structural combinations in addition to the operational parameters; application of a stochastic optimization technique, simulated annealing, to optimize the superstructure and generate energy-efficient and cost-effective flowsheets; and a case study relevant to natural gas processing to apply the synthesis methodology. This is an abstract of a paper presented at the 2012 AIChE Spring National Meeting and 8th Global Congress on Process Safety (Houston, TX 4/1-5/2012).

T1 - Synthesis and optimisation of demethaniser flowsheets for NGL recovery

To demonstrate the procedures involved,each approach is used to synthesize and develop an acceptable flowsheet for theproduction of the same chemical product, vinyl chloride.

The intuitive approach for methodically developing a set of flowsheets is througha multilevel analysis of process requirements and a hierarchical synthesis of potentialprocesses.

A new level-by-level methodology for flowsheet synthesis presented

For instance, the flowsheet from which the following table was extracted was divided into four sections (Product Synthesis, Isolation and Purification, Final Purification, and Crystallization).

Thealgorithmic approach has had similar experiences in flowsheet synthesis since mostconventional algorithmic methods require the manual construction of the complete networkcontaining all possible flowsheets, many of which are infeasible.

Flowsheet synthesis and complex distillation column …

The synthesis and optimization of plant-wide waste management policies under uncertainty is the subject of this paper. The combinatorial synthesis methodology (Chakraborty, A.; Linninger, A. A. Ind. Eng. Chem. Res. 2002, 41 (18), 4591-4604) was adapted to incorporate variations in the expected waste loads. In its first stage, automatic generation of recovery and treatment flowsheet produces a superstructure that embeds all plant-wide waste management policies. In the subsequent optimization phase, plant-wide policies with a desired degree of operational flexibility against uncertainty are developed. The proposed problem formulation leads to linear mathematical models for quantifying the probability of uncertain parameter variations affecting expected operating cost, emissions, and plant capacities. The paper discusses different flexibility measures, their purpose for process design under uncertainty, and mathematical models for their application to the synthesis of robust plant-wide waste management policies. The case studies demonstrate the application of the methodology to industrial design problems at batch manufacturing sites. The linear problem formulation together with the sampling technique suggested in the paper provide a practicable solution approach to open-ended flowsheet synthesis problems under uncertainty previously deemed intangible.

N2 - The synthesis and optimization of plant-wide waste management policies under uncertainty is the subject of this paper. The combinatorial synthesis methodology (Chakraborty, A.; Linninger, A. A. Ind. Eng. Chem. Res. 2002, 41 (18), 4591-4604) was adapted to incorporate variations in the expected waste loads. In its first stage, automatic generation of recovery and treatment flowsheet produces a superstructure that embeds all plant-wide waste management policies. In the subsequent optimization phase, plant-wide policies with a desired degree of operational flexibility against uncertainty are developed. The proposed problem formulation leads to linear mathematical models for quantifying the probability of uncertain parameter variations affecting expected operating cost, emissions, and plant capacities. The paper discusses different flexibility measures, their purpose for process design under uncertainty, and mathematical models for their application to the synthesis of robust plant-wide waste management policies. The case studies demonstrate the application of the methodology to industrial design problems at batch manufacturing sites. The linear problem formulation together with the sampling technique suggested in the paper provide a practicable solution approach to open-ended flowsheet synthesis problems under uncertainty previously deemed intangible.

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  • 05/01/2018 · Flowsheet synthesis..

    Homogeneous azeotropic distillation: separability and flowsheet synthesis.

  • Synthesis and optimisation of demethaniser flowsheets …

    (169h) Procafd: Computer Aided Tool for Synthesis-Design & Analysis of Chemical Process Flowsheets

  • Adrian / Synthesis and optimisation of demethaniser flowsheets for ..

    Flowsheet synthesis and complex distillation column design for separating ternary heterogeneous azeotropic mixtures

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Distillation synthesis toolbox for pre-flowsheet design

Selection of the flowsheet is one of the most important steps in the design ofa chemical plant, because only from the most optimal flowsheet can the most profitable,safe, and environmentally sound final design be obtained.

This chapter discusses two design procedures for flowsheet synthesis and design,namely, the hierarchical and algorithmic methods.

Process Flowsheet Synthesis 429.

AB - The synthesis and optimization of plant-wide waste management policies under uncertainty is the subject of this paper. The combinatorial synthesis methodology (Chakraborty, A.; Linninger, A. A. Ind. Eng. Chem. Res. 2002, 41 (18), 4591-4604) was adapted to incorporate variations in the expected waste loads. In its first stage, automatic generation of recovery and treatment flowsheet produces a superstructure that embeds all plant-wide waste management policies. In the subsequent optimization phase, plant-wide policies with a desired degree of operational flexibility against uncertainty are developed. The proposed problem formulation leads to linear mathematical models for quantifying the probability of uncertain parameter variations affecting expected operating cost, emissions, and plant capacities. The paper discusses different flexibility measures, their purpose for process design under uncertainty, and mathematical models for their application to the synthesis of robust plant-wide waste management policies. The case studies demonstrate the application of the methodology to industrial design problems at batch manufacturing sites. The linear problem formulation together with the sampling technique suggested in the paper provide a practicable solution approach to open-ended flowsheet synthesis problems under uncertainty previously deemed intangible.

Overview of Flowsheet Synthesis

The preparation of such a flowsheet encompasses the steps of synthesis,development, evaluation, and selection of the most appropriate processingarrangement of a chemical process.

flowsheet synthesis and simulation, ..

AB - A discussion on a demethanizer process, which was characterized by interactions between the complex distillation column and other flowsheet units, including the turbo-expander, flash units, multistream exchangers, and refrigeration system, covers a systematic approach for demethanizer flowsheet synthesis to generate cost-effective designs; a semi-rigorous boundary value method for the design of complex demethanizer columns for application within an optimization framework for process synthesis and evaluation; a simplified flowsheet simulation model based on shortcut models to account for various configurations and inter-connections in the demethanizer process; a methodology accounting for heat integration in multistream exchangers; a generalized superstructure for demethanizer flowsheet synthesis that includes various structural combinations in addition to the operational parameters; application of a stochastic optimization technique, simulated annealing, to optimize the superstructure and generate energy-efficient and cost-effective flowsheets; and a case study relevant to natural gas processing to apply the synthesis methodology. This is an abstract of a paper presented at the 2012 AIChE Spring National Meeting and 8th Global Congress on Process Safety (Houston, TX 4/1-5/2012).

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