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Synergistic optimization framework for the process synthesis and design of biorefineries

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 251-273 doi: 10.1007/s11705-021-2071-9

Abstract: The conceptual process design of novel bioprocesses in biorefinery setups is an important task, whichs synergistic effects by sequentially performing superstructure optimization to determine candidate processtopologies and simulation-based optimization to consolidate the process design under uncertainty offer

Keywords： biotechnology     surrogate modelling     superstructure optimization     simulation-based optimization     process    

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Automated synthesis of steady-state continuous processes using reinforcement learning

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 288-302 doi: 10.1007/s11705-021-2055-9

Abstract: Automated flowsheet synthesis is an important field in computer-aided process engineering.The present work demonstrates how reinforcement learning can be used for automated flowsheet synthesisAn agent is trained to take discrete actions and sequentially build up flowsheets that solve a given processTherein, flowsheet synthesis is modelled as a game of two competing players.The method is applied successfully to a reaction-distillation process in a quaternary system.

Keywords： automated process synthesis     flowsheet synthesis     artificial intelligence     machine learning     reinforcement    

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Process synthesis with simultaneous consideration of inherent safety-inherent risk footprint

Andreja Nemet, Jiří J. Klemeš, Zdravko Kravanja

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 745-762 doi: 10.1007/s11705-018-1779-7

Abstract: being operable and maintainable during process implementation.synthesis, using a mathematical programming approach.A mixed-integer, nonlinear programming (MINLP) model was used for the synthesis of a methanol productionprocess, considering risk assessment during the synthesis.Risk assessment is performed simultaneously with the MINLP process synthesis, where the risk is determined

Keywords： inherent safety     process design     simultaneous risk assessment     risk footprint     methanol process    

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Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 461-471 doi: 10.1007/s11705-010-0517-6

Abstract: The recent studies of direct alcohol/ether synthesis process in slurry reactors were reviewed, and theour laboratory was carried out in this paper. a global kinetics model for direct dimethyl ether (DME) synthesisThe optimal operating conditions for DME synthesis process were obtained: reaction temperature at 240

Keywords： syngas     alcohol/ether fuel     slurry catalyst     bubble column slurry reactor     global kinetics     mathematical model    

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MILP synthesis of separation processes for waste oil-in-water emulsions treatment

Zorka N. Pintarič,Gorazd P. Škof,Zdravko Kravanja

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 120-130 doi: 10.1007/s11705-016-1559-1

Abstract: This paper presents a novel synthesis method for designing integrated processes for oil-in-water (O/WThe optimal solution represents a flexible and profitable process for reducing the COD values below maximal

Keywords： oil-in-water emulsion     chemical oxygen demand     superstructure     process synthesis     MILP    

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Effects of the SAPO-11 synthetic process on dehydration of ethanol to ethylene

Lina WU, Xiaoxing SHI, Qun CUI, Haiyan WANG, He HUANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 60-66 doi: 10.1007/s11705-010-0540-7

Abstract: The effects of the synthetic condition of SAPO-11 molecular sieves on ethanol dehydration to ethylene were studied. Product-compositions, ethanol conversion, and selectivity to ethylene of synthesized and commercial SAPO-11 molecular sieves were compared. Results are as follows: the optimal synthetic conditions for SAPO-11 molecular sieves are adding pseudoboehmite before orthophoshporic, using di-n- propylamine as the template, having a mass fraction of 40% colloidal silica as the silica source and the starting gel obtained, and running at 200°C for 48 h. From the patterns of NH -TPD, the amount of acid synthesized by SAPO-11 molecular sieves is less than that by commercial SAPO-11 molecular sieves, and has a stronger weak acid. Also, ethanol conversion and selectivity to ethylene reached 99% at 280°C on synthesized SAPO-11, lower by 20°C compared to commercial SAPO-11. For two SAPO-11 molecular sieves, the by-products in the gas phase are mainly ethane, propane, propene, isobutane, n-butane, propadiene, butylene and some higher hydrocarbons. The by-products in the liquid phase are ethyl ether and acetaldehyde.

Keywords： SAPO-11 molecular sieves     synthesis     ethanol     ethylene     dehydration    

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NICE’s Indirect Coal-to-Liquid Process for Producing Clean Transportation Fuels Using Fischer-TropschSynthesis

Omar M. Basha,Li Weng,Zhuo-wu Men,Wayne Xu,Badie I. Morsi

Frontiers of Engineering Management 2016, Volume 3, Issue 4,   Pages 362-376 doi: 10.15302/J-FEM-2016049

Abstract: has pioneered and is currently leading the commercialization of the Direct Coal Liquefaction (DCL) processUniversity of Pittsburgh in order to develop and commercialize the Indirect Coal Liquefaction (ICL) processincluding a large-scale (5.8-m ID and 30-m height) Slurry-Bubble-Column Reactor (SBCR) for Fischer-Tropsch synthesisSwing Adsorption (PSA) unit; (3) using a reformer; and (4) using a Chemical looping Combustion (CLC) process

Keywords： Fischer-Tropsch synthesis     tail gas recycle     simulations     process design    

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An efficient technique for improving methanol yield using dual CO

Yang Su, Liping Lü, Weifeng Shen, Shun’an Wei

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 614-628 doi: 10.1007/s11705-019-1849-5

Abstract: Abstract Steam methane reforming (SMR)-based methanol synthesis plants utilizing a single CO2 feed representIn this study, a process integrating SMR with dry methane reforming to improve the conversion of bothand the recycle gas of the methanol synthesis loop.Comparative evaluations are carried out from a techno-economic point of view, and the proposed processmethanol productivity and CO2 utilization than the existing stand-alone natural gas-based methanol process

Keywords： methanol synthesis     CO2 utilization     dry methane reforming     steam methane reforming     process design    

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Nonlinear Model-Based Process Operation under Uncertainty Using Exact Parametric Programming

Vassilis M. Charitopoulos,Lazaros G. Papageorgiou,Vivek Dua

Engineering 2017, Volume 3, Issue 2,   Pages 202-213 doi: 10.1016/J.ENG.2017.02.008

Abstract: mixed-integer nonlinear programming (MINLP) problems are developed, with their main focus being on processsynthesis problems.In order to demonstrate the applicability and validity of the proposed algorithms, two process synthesis

Keywords： Parametric programming     Uncertainty     Process synthesis     Mixed-integer nonlinear programming     Symbolic manipulation    

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Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 372-375 doi: 10.1007/s11705-010-0570-1

Abstract: This result confirmed the catalytic effect of potassium carbonate on the synthesis of calcium carbide

Keywords： calcium carbide     synthesis     catalysis    

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Study on a green synthesis of

Aixin WANG, Yuanbin SHE, Jing FAN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 219-221 doi: 10.1007/s11705-009-0058-z

Abstract: A novel method for the synthesis of -oxo-bis[tetraarylporphyrinatoiron] ([TRPPFe] O) based on the reaction

Keywords： μ-oxo-bis[tetraarylphenylporphinatoiron]     green synthesis     water    

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Advantageous mechanochemical synthesis of copper(I) selenide semiconductor, characterization, and properties

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 433-442 doi: 10.1007/s11705-021-2066-6

Abstract: Copper(I) selenide-nanocrystalline semiconductor was synthesized via one-step mechanochemical synthesisThe kinetics of synthesis was followed by X-ray powder diffraction analysis and specific surface areaThis type of Cu2Se synthesis can be easily adapted to production dimensions using an industrialThe advantages of mechanochemical synthesis represent the potential for inexpensive, environmentally-friendly

Keywords： Cu2Se     berzelianite     nanocrystalline semiconductor     mechanochemical synthesis     planetary ball    

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Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 330-339 doi: 10.1007/s11708-010-0121-y

Abstract: economic analysis was done for the biomass to dimethyl ether (DME) technology to promote the gasification/synthesisThe technology of biomass gasification/synthesis has obvious advantages, including production flexibilityBiomass gasification/synthesis technology integrates bio-DME synthesis, fertilizer production, electricity

Keywords： technical and economic analysis     biomass     dimethyl ether     gasification/synthesis    

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Multi-resolution texture synthesis from turntable image sequences

Xuedong WANG, Xiaojun WU, Xiaorong ZHANG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 72-80 doi: 10.1007/s11465-012-0305-8

Abstract:

Texture synthesis and texture mapping are important technologies for rendering realistic three-dimensionalpaper, we propose a fast method to construct high quality texture map for multi-resolution texture synthesis

Keywords： texture synthesis     multi-resolution     texture map     texture mapping    

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Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 17-32 doi: 10.1007/s11465-013-0364-5

Abstract: The structure of the mechanism is obtained using structural synthesis concepts, from an initial conceptualuncertainty positions are derived for this mechanism in order to face the last step, the dimensional synthesis; in this sense, two kinds of dimensional synthesis are arranged to guide the wing along two positions

Keywords： morphing wing     structural synthesis     dimensional synthesis     geometrical kinematics    

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Title Author Date Type Operation

Synergistic optimization framework for the process synthesis and design of biorefineries

Journal Article

Automated synthesis of steady-state continuous processes using reinforcement learning

Journal Article

Process synthesis with simultaneous consideration of inherent safety-inherent risk footprint

Andreja Nemet, Jiří J. Klemeš, Zdravko Kravanja

Journal Article

Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Journal Article

MILP synthesis of separation processes for waste oil-in-water emulsions treatment

Zorka N. Pintarič,Gorazd P. Škof,Zdravko Kravanja

Journal Article

Effects of the SAPO-11 synthetic process on dehydration of ethanol to ethylene

Lina WU, Xiaoxing SHI, Qun CUI, Haiyan WANG, He HUANG

Journal Article

NICE’s Indirect Coal-to-Liquid Process for Producing Clean Transportation Fuels Using Fischer-TropschSynthesis

Omar M. Basha,Li Weng,Zhuo-wu Men,Wayne Xu,Badie I. Morsi

Journal Article

An efficient technique for improving methanol yield using dual CO

Yang Su, Liping Lü, Weifeng Shen, Shun’an Wei

Journal Article

Nonlinear Model-Based Process Operation under Uncertainty Using Exact Parametric Programming

Vassilis M. Charitopoulos,Lazaros G. Papageorgiou,Vivek Dua

Journal Article

Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Journal Article

Study on a green synthesis of

Aixin WANG, Yuanbin SHE, Jing FAN

Journal Article

Advantageous mechanochemical synthesis of copper(I) selenide semiconductor, characterization, and properties

Journal Article

Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Journal Article

Multi-resolution texture synthesis from turntable image sequences

Xuedong WANG, Xiaojun WU, Xiaorong ZHANG

Journal Article

Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Journal Article