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International Journal of Process Systems Engineering最新文献

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A systems integration approach to the optimum operation and scheduling of biocide usage and discharge for seawater cooling systems 海水冷却系统杀菌剂使用与排放的最佳操作与调度系统集成方法
International Journal of Process Systems Engineering Pub Date : 2012-03-19 DOI: 10.1504/IJPSE.2012.045895
A. Mahfouz, Selma Atilhan, B. Batchelor, P. Linke, A. Abdel-Wahab, M. El‐Halwagi
{"title":"A systems integration approach to the optimum operation and scheduling of biocide usage and discharge for seawater cooling systems","authors":"A. Mahfouz, Selma Atilhan, B. Batchelor, P. Linke, A. Abdel-Wahab, M. El‐Halwagi","doi":"10.1504/IJPSE.2012.045895","DOIUrl":"https://doi.org/10.1504/IJPSE.2012.045895","url":null,"abstract":"The objective of this work is to develop a systematic approach to the optimal design and integration of seawater cooling systems in industrial facilities along with the usage and discharge of biocides. Specifically, the paper will address the following tasks: 1 \u0000identification of the reaction pathways for the biocide from the mixing basin to the discharge points \u0000 \u00002 \u0000kinetic modelling of the biocide and by-products throughout the process \u0000 \u00003 \u0000a process integration framework to provide a holistic approach to optimising the design and operation of the seawater cooling systems, along with the dosage and discharge systems. \u0000 \u0000 \u0000 \u0000A hierarchical procedure is developed to first identify design modifications for heat integration and energy efficiency. Then, a multi-period, multi-segment optimisation formulation is developed and solved to identify the optimal operation and scheduling of biocide usage and discharge. A case study is solved to illustrate the applicability of the devised approach.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114576717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of thermal system network of an ammonia plant using genetic algorithms – part I: synthesis and optimisation 用遗传算法分析氨厂热系统网络。第一部分:合成和优化
International Journal of Process Systems Engineering Pub Date : 2012-03-19 DOI: 10.1504/IJPSE.2012.045896
N. Chavda, P. Prabhakaran
{"title":"Analysis of thermal system network of an ammonia plant using genetic algorithms – part I: synthesis and optimisation","authors":"N. Chavda, P. Prabhakaran","doi":"10.1504/IJPSE.2012.045896","DOIUrl":"https://doi.org/10.1504/IJPSE.2012.045896","url":null,"abstract":"Optimum and efficient use of energy through conservation and management is vital in any energy intensive industry. As there are many heat exchangers in a chemical plant, it is important to build the heat exchanger network optimally. The synthesis and optimisation of thermal network of an ammonia plant using combined approach of pinch technology and genetic algorithms is presented in Part I. Two approaches of pinch technology, viz., minimum temperature approach and minimum flux approach are adopted and compared. For this, steady state on line process data captured from an existing network of heat exchangers of an ammonia plant is used. The maximum possible saving in total annual cost of production of ammonia using minimum temperature approach and minimum flux approach are found to be 3.14% and 15.73% respectively. Based on the above results, modification techniques are employed for the ammonia plant and are presented in Part II.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116106946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A robust method for coupling detection among process variables 一种过程变量间耦合检测的鲁棒方法
International Journal of Process Systems Engineering Pub Date : 2012-03-19 DOI: 10.1504/IJPSE.2012.045901
S. Hussain, H. Gabbar
{"title":"A robust method for coupling detection among process variables","authors":"S. Hussain, H. Gabbar","doi":"10.1504/IJPSE.2012.045901","DOIUrl":"https://doi.org/10.1504/IJPSE.2012.045901","url":null,"abstract":"Investigating complex interaction patterns among multiple process variables (PVs) is an important task. This paper demonstrates a robust method to estimate direction and strength of interactions among process variables. The method captures rapid changes in process variables through wavelet analysis. It uses single degree of freedom (SDOF) modelling to approximate a non-linear system in terms of linear damped forced oscillators. Phase interaction theory then extracts coupling direction and strength among process variables. The robustness of the proposed technique is verified on simulated Van der Pol oscillators with known directionality and coupling strength with varying signal to noise ratio (SNR). The effectiveness and feasibility of the proposed method have also been demonstrated on simulated data emanating from Canada Deuterium Uranium (CANDU) nuclear power plant steam generator level control mechanism. The extracted patterns of interaction structure among PVs aid to uncover the polishing mechanisms an...","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124434922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Flexibility adoption in Indian manufacturing firms: a current perspective 印度制造企业采用灵活性:当前视角
International Journal of Process Systems Engineering Pub Date : 2011-07-27 DOI: 10.1504/IJPSE.2011.041562
N. Nayak, P. Ray
{"title":"Flexibility adoption in Indian manufacturing firms: a current perspective","authors":"N. Nayak, P. Ray","doi":"10.1504/IJPSE.2011.041562","DOIUrl":"https://doi.org/10.1504/IJPSE.2011.041562","url":null,"abstract":"This study examines the current state of flexibility adoption in manufacturing firms in India, considering the important flexible equipments and indeed, this is the first such attempt. Adoption/implementation includes equipments such as work centre, process centre, support stations, network communications, integration and control. Questionnaire survey methodology is used for status evaluation: not implemented, implementation in progress, and fully implemented. It is found that adoption follows an incremental, piecemeal progression from the least complicated through intermediate to integrated technologies. A few important equipments currently adopted are: universal machining centre, local area network, automated inspection and testing station etc. In-house development, supplier’s development and flexibility outcomes play central role for flexibility adoption-related issues. The results empirically support and cast insights into the flexibility adoption trend. Based upon the findings, various important stra...","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117008945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Integration of hydrogen management in refinery planning with rigorous process models and product quality specifications 将氢气管理与严格的工艺模型和产品质量规范整合到炼油厂规划中
International Journal of Process Systems Engineering Pub Date : 2011-07-27 DOI: 10.1504/IJPSE.2011.041565
A. Elkamel, I. Alhajri, A. Almansoori, Y. Saif
{"title":"Integration of hydrogen management in refinery planning with rigorous process models and product quality specifications","authors":"A. Elkamel, I. Alhajri, A. Almansoori, Y. Saif","doi":"10.1504/IJPSE.2011.041565","DOIUrl":"https://doi.org/10.1504/IJPSE.2011.041565","url":null,"abstract":"New trends of increased heavy crude markets and clean-fuel legislation, to produce ultra low-sulphur (ULS) gasoline and diesel fuels, are forcing refineries to increase their consumption of hydrogen. This critical situation raises the need to have a tool for operating refineries with flexibility and profitability. This paper addresses the planning of refinery with consideration to hydrogen availability. A systematic method for integrating a hydrogen management strategy within a rigorous refinery planning model is undertaken. The presented model consists of two main building blocks: a set of non-linear processing units’ models and a hydrogen balance framework. The two blocks are integrated to produce a refinery-wide planning model with hydrogen management. The hydrogen management alternatives were determined by economic analysis. The proposed model improves the hidden hydrogen unavailability that prevents refineries from achieving their maximum production and profit. The model is illustrated on representative case studies and the results are discussed. It was found that an additional annual profit equivalent to $7 million could be achieved with a one-time investment of $13 million in a new purification unit.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116563272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 29
Simulation analysis and performance improvement of engine assembly line 发动机装配线仿真分析及性能改进
International Journal of Process Systems Engineering Pub Date : 2011-07-27 DOI: 10.1504/IJPSE.2011.041563
J. Blake, Ahad Ali
{"title":"Simulation analysis and performance improvement of engine assembly line","authors":"J. Blake, Ahad Ali","doi":"10.1504/IJPSE.2011.041563","DOIUrl":"https://doi.org/10.1504/IJPSE.2011.041563","url":null,"abstract":"Simulation is used frequently for performance measurement and improvement. The purpose of this paper is to investigate an existing engine assembly line at Detroit Diesel with a known bottleneck station, and determine the best solution to improve the output of this process and accommodate a future decrease in cycle times. The assembly line uses automated guided vehicles (AGVs) to transport the engines and at this station there is a second path available to add an additional process. A simulation of the existing system is completed, and improvement ideas are simulated and analysed to determine which solution best suits the assembly line’s need for throughput improvement. The study shows significant performance improvement in two automatic system of the valve lash operation. The confidence interval shows lower variability if two-automatic system is used compared to hybrid system. The concern was raised for the manual operation due to ergonomical problems. Flexible simulation shows how to improve the system without disrupting production and operational systems.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114450178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Framework of pipeline integrity management 管道完整性管理框架
International Journal of Process Systems Engineering Pub Date : 2011-07-27 DOI: 10.1504/IJPSE.2011.041560
H. Gabbar, H. Kishawy
{"title":"Framework of pipeline integrity management","authors":"H. Gabbar, H. Kishawy","doi":"10.1504/IJPSE.2011.041560","DOIUrl":"https://doi.org/10.1504/IJPSE.2011.041560","url":null,"abstract":"Pipeline integrity is the cornerstone of many industrial and engineering systems. This paper provides a review and analysis of pipeline integrity that will support professionals from industry who are investigating technical challenges of pipeline integrity. In addition, it will provide an overview for academia to understand the complete picture of pipeline integrity threats and techniques to deal with these threats. Pipeline threats are explained and failures are classified. Design practices are discussed using pressure criteria. Inspection techniques are studied and used as a basis for describing the corresponding integrity assessment techniques, which are linked with integrity monitoring and maintenance criteria. Finally, pipeline integrity management system design is presented using activity models, process models, and knowledge structures. The paper will be useful for further development of automated tools to support pipeline integrity management.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130415214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Controlling and improving quality of the fertiliser production process using neural network models 利用神经网络模型控制和提高肥料生产过程的质量
International Journal of Process Systems Engineering Pub Date : 2011-03-08 DOI: 10.1504/IJPSE.2011.038942
Mohammed H. Hassan
{"title":"Controlling and improving quality of the fertiliser production process using neural network models","authors":"Mohammed H. Hassan","doi":"10.1504/IJPSE.2011.038942","DOIUrl":"https://doi.org/10.1504/IJPSE.2011.038942","url":null,"abstract":"Fertiliser production process is characterised by being a dynamic process which is not easy to be predicted and controlled due to uncertain, imprecise and vague parameters' relations. Although mathematical modelling techniques are very well developed, these types of dynamic processes are difficult to be modelled by those techniques and also the regression models are complex to be used for real time control and, usually, their errors are significant. The main and most important quality characteristic in the fertiliser production process is the moisture content. This parameter affects the product shelf life, effectiveness and harmful internal reactions. In this research, two different artificial neural network (ANN) approaches are developed to predict the moisture content of the produced fertiliser: the back-propagation multilayer perceptron (BPMLP) and the radial basic function (RBF) nets. The two models performed satisfactory in predicting the moisture content with low error percent. Predicting the moisture content, the quality of the produced fertiliser can be enhanced either by reheating, adding chemicals, or both.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121093679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of support tool for control design of nuclear power plant using hierarchical control chart (HCC) 基于层次控制图的核电厂控制设计支持工具的开发
International Journal of Process Systems Engineering Pub Date : 2011-03-08 DOI: 10.1504/IJPSE.2011.038943
E. Nasimi, H. Gabbar
{"title":"Development of support tool for control design of nuclear power plant using hierarchical control chart (HCC)","authors":"E. Nasimi, H. Gabbar","doi":"10.1504/IJPSE.2011.038943","DOIUrl":"https://doi.org/10.1504/IJPSE.2011.038943","url":null,"abstract":"Control design of complex systems, such as nuclear power plants (NPP), is multidimensional problem that requires concurrent engineering environment. This paper presents the idea of integrating process and control models and associated knowledge using hierarchical control chart (HCC), which supports control activities throughout the analysis, design, and operation phases. Automated solution for implementing HCC is developed and presented using a selected case study of steam generator control design of nuclear power plant. Integrated knowledge architecture is presented to support different views during the control design stage: process design, control analysis, control design, control programming, operation, and troubleshooting. The proposed solution will provide better ways to structure and share control knowledge, which will reduce overall risks in the engineering process.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130868881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Modified Smith predictor with PID structure for control of multivariable processes 基于PID结构的改进Smith预测器用于多变量过程控制
International Journal of Process Systems Engineering Pub Date : 2011-03-08 DOI: 10.1504/IJPSE.2011.038946
R. Panda, M. Tadé
{"title":"Modified Smith predictor with PID structure for control of multivariable processes","authors":"R. Panda, M. Tadé","doi":"10.1504/IJPSE.2011.038946","DOIUrl":"https://doi.org/10.1504/IJPSE.2011.038946","url":null,"abstract":"Industrial processes with dead time, can be controlled using a model-based control strategy called 'Smith predictor' (SP) to compensate for the dead time part. Most of the control loops in process industries use PID loops. By introducing a tuning parameter (Ksp) in the control law, to switch between SP and proportional-integral-derivative (PID) modes, an SP with PID (SP-PID) is synthesised in this work to counteract the offset and to obtain a better performance during set-point change as well as load changes. Performance of SP-PID to control linear MIMO systems (square, stable, non-singular linear) are carried-out with decentralised scheme by studying set-point change and load disturbances separately. Present results have been compared with similar existing control strategies. Sensitivity and robustness issues of the present control scheme are also discussed.","PeriodicalId":360947,"journal":{"name":"International Journal of Process Systems Engineering","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133231042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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