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A multi-objective optimization and sustainability of H2S conversion into sulfur by claus process using symmetry simulation

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AIP Conference Proceedings 2022年第1期2610卷

作者： Ramsha Jahan Zulfan Adi Putra Muhammad Ayoub Bawadi Abdullah 1Chemical Engineering Department Universiti Teknologi PETRONAS 32610 Bandar Seri Iskandar Perak Darul Ridzuan Malaysia 3PETRONAS Group Technical Solutions Process Simulation and Optimization Level 16 Tower 3 Kuala Lumpur Convention Center Kuala Lumpur 50088 Malaysia 2Centre of Contaminant Control and Utilisation (CenCoU) Universiti Teknologi PETRONAS 32610 Bandar Seri Iskandar Perak Darul Ridzuan Malaysia

Hydrogen sulfide (H2S) is an extremely toxic acid gas and is regarded as one of the primary sources of corrosion and odor problems. The work proposed the Claus process, considering the economic, environmental, and safety requirements are the three pillars of sustainability. The proposed Claus process annual benefit, global warming potential (GWP), fire explosion damage index (FEDI), and toxicity damage index (TDI) were estimated utilizing techno-economic analysis, life-cycle assessment, and hazard identification rating techniques. Then, a multi-objective optimization problem was devised and solved to maximize benefit while minimizing GWP, FEDI, and TDI. The process is simulated using Symmetry simulation software to vary acid feed gas capacity and hydrogen sulfide concentration. The simulation results were used to assess the operating conditions of the sustainability pillars in a comparative manner. According to the findings of this study, the Claus process performed better in terms of profitability, the fire and explosion damage index (FEDI), the toxicity damage index (TDI), and the probability of global warming are all factors to consider (GWP). Based on variable feed capacities and hydrogen sulfide concentrations, the regression models created demonstrated the ability to predict the sustainable approach for hydrogen sulfide conversion employed in the industry. According to the results, the Claus process is expected to be the most sustainable strategy for hydrogen sulphide conversion throughout most of the conversion spectrum.

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$H_{\infty}$ Output Tracking control for Networked Systems With Adaptively Adjusted Event-Triggered Scheme

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IEEE Transactions on Systems, Man, and Cybernetics: Systems 2019年第10期49卷 2050-2058页

作者： Huaicheng Yan Chenyang Hu Hao Zhang Hamid Reza Karimi Xiaowei Jiang Ming Liu Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education East China University of Science and Technology Shanghai China School of Information Science and Engineering East China University of Science and Technology Shanghai China Department of Control Science and Engineering Tongji University Shanghai China Department of Mechanical Engineering Politecnico di Milan Milan Italy College of Mechatronics and Control Engineering Hubei Normal University Huangshi China Research Center of Satellite Technology Harbin Institute of Technology Harbin China

The H ∞ output tracking control problem of the networked control systems (NCSs) under an adaptively adjusted event-triggered scheme is investigated in this paper. Firstly, a novel adaptively adjusted event-triggered scheme developed in the NCSs with stochastic sensor faults is proposed to choose the necessary packets of sampled data to be transmitted through the networks. Then, the considered system is described as a time-delay system with a delay-distribution for investigation. Based on the established model, a novel stability criterion and the state-feedback controller design with a desired performance of H ∞ output tracking control for the systems are both derived by using Lyapunov functional. An algorithm is also presented to explain the process of adaptively adjusted event-triggered scheme method. Finally, a satellite tracking case is provided to demonstrate the effectiveness of the proposed approach.

关键词： Bandwidth Delays Actuators Communication networks Symmetric matrices Networked control systems

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Corrigendum to "8-Hydroxyquinoline based chitosan derived carbohydrate polymer as biodegradable and sustainable acid corrosion inhibitor for mild steel: Experimental and computational analyses" [Int. J. Biol. Macromol. 26 (1) (2020) 645-655]

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International journal of biological macromolecules 2023年 232卷 123744页

作者： M Rbaa M Fardioui Chandrabhan Verma Ashraf S Abousalem M Galai E E Ebenso T Guedira B Lakhrissi I Warad A Zarrouk Laboratory of Agro-Resources Polymers and Process Engineering Department of Chemistry Faculty of Science Ibn Tofail University PO Box 133 14000 Kenitra Morocco. Electronic address: mohamed.rbaa10@***. Laboratory of Materials Electrochemistry and Environment Ibn Tofail University Faculty of Sciences Kenitra Morocco. Center of Research Excellence in Corrosion Research Institute King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia Department of Chemistry School of Chemical & Physical Sciences and Material Science Innovation & Modelling (MaSIM) Research Focus Area Faculty of Agriculture Science and Technology North-West University (Mafikeng Campus) Private Bag X2046Mmabatho 2735 South Africa. Chemistry Department Faculty of Sciences Mansoura University El-Mansoura 35516 Egypt Quality Control Laboratory Operations Department JOTUN Egypt. Laboratory of Materials Engineering and Environment: Application and Modeling Faculty of Sciences Ibn Tofail University PO Box 133 14000 Kénitra Morocco. Laboratory of Agro-Resources Polymers and Process Engineering Department of Chemistry Faculty of Science Ibn Tofail University PO Box 133 14000 Kenitra Morocco. Department of Chemistry and Earth Sciences PO Box 2713 Qatar University Doha Qatar. Laboratory of Materials Nanotechnology and Environment Mohammed V University Faculty of Sciences P.O. Box. 1014 Rabat Morocco. Electronic address: azarrouk@***.

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PDG Pressure Estimation in Offshore Oil Well: Extended Kalman Filter vs. Artificial Neural Networks

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IFAC-PapersOnLine 2019年第1期52卷 508-513页

作者： Andressa Apio Jônathan W.V. Dambros Fabio C. Diehl Marcelo Farenzena Jorge O. Trierweiler Group of Intensification Modeling Simulation Control and Optimization of Processes (GIMSCOP) Chemical Engineering Department Federal University of Rio Grande do Sul (UFRGS) R. Eng Luiz Englert s/n Campus Central Porto Alegre RS Brazil Department of Computer Science University of Kaiserslautern 67663 Kaiserslautern Deutschland Research and Development Center Petrobras 21941915 Rio de Janeiro Brazil

The Permanent Downhole Gauge (PDG) pressure measurement is of great importance for offshore oil well modeling and control since it is measured close to the bottom hole. The PDG is installed in a remote undersea environment, which makes expensive the maintenance in case of fault. For this reason, PDG measurements are frequently unavailable. To overcome this limitation, the PDG pressure can be estimated using other available measurements. The estimation is not a simple task since, depending on process operational conditions, the multiphase flow might present limit cycles. In this work, Artificial Neural Network (ANN) and Extended Kalman Filter (EKF) are proposed as potential techniques for the PDG pressure estimation. The comparison of the results shows that ANN returns precise estimation for a short-time window after the failure, but fails when a different process operating condition is applied, while EKF returns good estimation in all the cases.

关键词： Modelling System Identification Data Analytics Machine Learning Inferential sensing State Estimation Sensor Development

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Tracking performance limitations of mimo networked control systems with multiple communication constraints

arXiv

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arXiv 2019年

作者： Chen, Chao-Yang Gui, Weihua Wu, Lianghong Liu, Zhaohua Yan, Huaicheng School of Information and Electrical Engineering Hunan University of Science and Technology Xiangtan411201 China School of Information Science and Engineering Central South University Changsha410012 China Center for Polymer Studies Department of Physics Boston University BostonMA02215 United States School of Information Science and Engineering Central South University Changsha410012 China School of Information and Electrical Engineering Hunan University of Science and Technology Xiangtan411201 China Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education East China University of Science and Technology Shanghai200237 China College of Mechatronics and Control Engineering Hubei Normal University Huangshi435002 China

In this paper, the tracking performance limitation of networked control systems (NCSs) is studied. The NCSs is considered as continuous-time linear multi-input multi-output (MIMO) systems with random reference noises. The controlled plants include unstable poles and non-minimum phase (NMP) zeros. The output feedback path is affected by multiple communication constraints. We focus on some basic communication constraints, including additive white noise (AWN), quantization noise, bandwidth, as well as encoder-decoder. The system performance is evaluated with the tracking error energy, and used a two-degree of freedom (2DOF) controller. The explicit representation of the tracking performance is given in this paper. The results indicate the tracking performance limitations rely to internal characteristics of the plant (unstable poles and NMP zeros), reference noises (the reference noise power distribution (RNPD) and its directions) and the characteristics of communication constraints. The characteristics of communication constraints include communication noise power distribution (CNPD), quantization noise power distribution (QNPD), and their distribution directions, transform bandwidth allocation (TBA), transform encoder-decoder allocation (TEA), and their allocation directions, and NMP zeros and MP part of bandwidth. Moreover, the tracking performance limitations are also affected by the angles between the each transform NMP zero direction and RNPD direction, and these angles between each transform unstable poles direction and the direction of communication constraint distribution/allocation. In addition, for MIMO NCSs, bandwidth (there are not identical two channels) always can affects the direction of unstable poles, and the channel allocation of bandwidth and encode-decode may be used for a feasible method for the performance allocation of each channels. Lastly, a instance is given for verifying the effectiveness of the theoretical outcomes. Copyright © 2019, The Aut

关键词： Bandwidth

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Satellite-based estimates of decline and rebound in China’s CO2 emissions during COVID-19 pandemic

arXiv

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arXiv 2020年

作者： Zheng, Bo Geng, Guannan Ciais, Philippe Davis, Steven J. Martin, Randall V. Meng, Jun Wu, Nana Chevallier, Frederic Broquet, Gregoire Boersma, Folkert van Der, Ronald A. Lin, Jintai Guan, Dabo Lei, Yu He, Kebin Zhang, Qiang Laboratoire des Sciences du Climat et de l'Environnement CEA-CNRS-UVSQ Gif-sur-Yvette France Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System Science Tsinghua University Beijing China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing China Department of Earth System Science University of California Irvine IrvineCA United States Department of Energy Environmental & Chemical Engineering Washington University in St.Louis St. LouisMO United States Department of Physics and Atmospheric Science Dalhousie University HalifaxNS Canada Harvard-Smithsonian Center for Astrophysics CambridgeMA United States De Bilt Netherlands Environmental Sciences Group Wageningen University Wageningen Netherlands Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic Sciences School of Physics Peking University Beijing China Chinese Academy of Environmental Planning Beijing China

Changes in CO2 emissions during the COVID-19 pandemic have been estimated from indicators on activities like transportation and electricity generation. Here, we instead use satellite observations together with bottom-up information to track the daily dynamics of CO2 emissions during the pandemic. Unlike activity data, our observation-based analysis can be independently evaluated and can provide more detailed insights into spatially-explicit changes. Specifically, we use TROPOMI observations of NO2 to deduce ten-day moving averages of NOx and CO2 emissions over China, differentiating emissions by sector and province. Between January and April 2020, China’s CO2 emissions fell by 11.5% compared to the same period in 2019, but emissions have since rebounded to pre-pandemic levels owing to the fast economic recovery in provinces where industrial activity is concentrated. Copyright © 2020, The Authors. All rights reserved.

关键词： Nitrogen oxides

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Gasification Integrated with Small chemical Pulp Mills for Fuel and Energy Production

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Energy Procedia 2017年 142卷 977-983页

作者： Muhammad Naqvi Erik Dahlquist Abdul-Sattar Nizami Muhammad Danish Salman Naqvi Usman Farooq Abdul Sattar Qureshi Mohammad Rehan Department of Energy Building and Environment Mälardalen University Sweden Center of Excellence in Environmental Studies King Abdulaziz University Saudi Arabia State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process ECUST China School of Chemical & Materials Engineering NUST Pakistan Institute of Biotechnology and Genetic Engineering University of Sindh Pakistan

Pulp mills without black liquor recovery cycle could play a major role in employing black liquor gasification (BLG) to produce transport fuels. In conventional chemical pulp mills, black liquor is burnt in recovery boilers to generate steam and electricity to meet energy demands. The inorganic chemicals are reused for the digestion process. However, the energy content and inorganic chemicals are not recovered in small scale pulp mills especially in the developing countries which do not employ recovery cycle. This study investigates the potential of synthetic natural gas (SNG) production by integrating BLG island with a reference pulp mill without chemical recovery cycle. The improvements in overall energy efficiency are evaluated using performance indicators such as biofuel production potential, integrated system’s efficiency, and energy ratios. The oxygen-blown circulating fluidized bed (CFB) gasification with direct causticization is integrated with reference pulp mill. The results showed considerable SNG production without external biomass import. However to compensate total electricity deficit, the electricity will be imported from the grid. There is a substantial CO 2 abatement potential of combining CO 2 capture using seloxol absorption, and CO 2 mitigation from SNG by replacing gasoline.

关键词： Pulp mill Polygeneration Gasification SNG Waste to energy

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Effect of dispersed hydrophilic silicon dioxide nanoparticles on batch adsorption of benzoic acid from aqueous solution using modified natural vermiculite: An equilibrium study

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Journal of Applied Research and Technology 2016年第5期14卷 325-337页

作者： Pouya, Ehsan Sadeghi Abolghasemi, Hossein Fatoorehchi, Hooman Rasem, Bettina Hashemi, Seyed Jalaledin Center for Separation Processes Modeling and Nano-Computations School of Chemical Engineering College of Engineering University of Tehran P.O. Box 11365-4563 Tehran Iran Oil and Gas Center of Excellence University of Tehran Tehran Iran Department of Chemical Engineering Faculty of Process and Systems Engineering Technical University of Berlin Berlin Germany Department of Chemical Engineering Faculty of Engineering McGill University Montreal Canada

The equilibrium adsorption of benzoic acid from an aqueous medium on a natural vermiculite-based adsorbent was studied in the presence and absence of hydrophilic silicon dioxide nanoparticles in batchwise mode. The adsorbent was prepared through grinding natural vermiculite in a laboratory vibratory disk mill and the surfactant modification of ground vermiculite by cetyltrimethylammonium bromide, subsequently. The equilibrium isotherm in the presence and absence of nanoparticles was experimentally obtained and the equilibrium data were fitted to the Langmuir, Freundlich, Dubinin–Radushkevich and Temkin models. The results indicated that the dispersion of silicon dioxide nanoparticles at optimum concentration in the liquid phase remarkably increases the removal efficiency. Furthermore, it yields a more favorable equilibrium isotherm and changes the compatibility of equilibrium data from the Langmuir and Temkin equations to just the Langmuir equation. A quadratic polynomial model predicting the equilibrium adsorbent capacity in the presence of nanoparticles as a function of the adsorbate and initial nanoparticle concentrations was successfully developed using the response surface methodology based on the rotatable central composite design. A desirability function was used in order to optimize the values of all variables, independent and dependent ones, simultaneously. © 2016 Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico

关键词： Adsorption Benzoic acid Cetyltrimetylammonium bromide Desirability function Response surface methodology Silicon dioxide nanoparticles Vermiculite

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Investigation on Cylindrical Particle Position Distribution in Fluidized Bed Using XPTV Method

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Kung Cheng Je Wu Li Hsueh Pao/Journal of engineering Thermophysics 2017年第7期38卷 1384-1391页

作者： Zhong, Wen-Qi Chen, Xi Yu, Ai-Bing Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Nanjing210096 China Center for Simulation and Modeling of Particulate Systems Southeast University-Monash University Joint Research Institute Suzhou215123 China Department of Chemical Engineering Monash University ClaytonVIC3800 Australia

An X-ray particle tracking velocimetry (XPTV) system is designed and built, and the corresponding tracer particle fabrication method is established. With the XPTV system, the cylindrical particle position and orientation determination method and its error evaluation are investigated. Experimental studies on cylindrical particle position and orientation distribution are carried out based on the aforementioned system and methods. The results show that in bubbling fluidization regime, an internal circulation of cylindrical particles forms in the fluidized bed, and the center axes of most cylindrical particles tend to tilt instead of being vertical. In turbulence fluidization regime, cylindrical particles tend to uniformly disperse across the fluidized bed, and the center axes of most cylindrical particles are vertical. © 2017, Science Press. All right reserved.

关键词： Fluidized beds

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Fruit Waste to Energy through Open Fermentation

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Energy Procedia 2017年 142卷 904-909页

作者： Abdul Sattar Qureshi Imrana Khushk Salman Raza Naqvi Altaf Ahmed Simiar Chaudhry Haider Ali Muhammad Naqvi Muhammad Danish Ayyaz Ahmed Hamid Majeed Abdul Nabi Mir Jatt Mohammad Rehan Abdul-Sattar Nizami Institute of Biotechnology and Genetic Engineering University of Sindh Jamshoro (76080) Pakistan School of Chemical & Materials Engineering National University of Sciences & Technology Islamabad (44000) Pakistan College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China Department of Chemical Engineering University of Engineering & Technology KSK Campus Lahore 54890 Pakistan Department of Energy Building and Environment Mälardalen University Västerås 72123 Sweden State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process ECUST Shanghai 200237 China Department of Chemical Engineering Muhammad Nawaz Sharif University of Engineering and Technology Multan Pakistan Key Laboratory of Food Colloids and Biotechnology Jiangnan University Wuxi China Institute of Microbiology University of Sindh Jamshoro (76080) Pakistan Center of Excellence in Environmental Studies (CEES) King Abdulaziz University Jeddah Saudi Arabia

This study aims to examine the nonsterilized fermentation conditions for coproduction of pectinases and lipase enzymes using several fruit wastes as an energy source. Thermophilic fungal strain, Penicillium expansum CMI 39671 was used as a fermenting strain. The effect of process conditions including; nitrogen sources, pH, temperature, time and moisture contents, on the production of both enzymes were studied. The highest activities of pectinase and lipase (2817, 1870 U/g dry substrate) enzymes were found with orange peel feedstock, whereas the lowest activities of 1662 U/g and 1266 U/g were found with banana peel and papaya peel feedstocks respectively. Overall, pectinase showed higher enzymatic activities than lipase enzymes, both having similar increasing and decreasing trends, at all studied conditions. The optimum process conditions of peptone as a nitrogen source, pH 7, 40°C, 5 days and 70% moisture contents, were found to show highest enzymatic activities for both enzymes. The orange peel feedstock showed no significant difference in both enzymes’ activities at sterilized and nonnotarized process conditions. Pectinase and lipase enzymes showed (13791 U/g) and (8114 U/g) for sterilized and (14091 U/g) and (8324 U/g) for nonnotarized process conditions respectively. In addition, the fungal strains also produce bacteriocin-like compounds that could inhibit microbial growth. These findings will help to design and develop robust, cost-effective and less energy intensive enzyme production processes and consequently an efficient fruit waste to energy system through open fermentation.

关键词： Open fermentation Penicillium expansum CMI 39671 Fruit waste Orange peel Enzymes

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