Among the trends for a modern chemical engineering, the third paradigm: The time and length multiscale approach as an efficient tool for process intensification and product design and engineering

2010 ◽  
Vol 88 (3) ◽  
pp. 248-254 ◽  
Author(s):  
Jean-Claude Charpentier
2006 ◽  
Vol 12 (2) ◽  
pp. 87-115
Author(s):  
Jean-Claude Charpentier

In today's economy, chemical engineering must respond to the changing needs of the chemical process industry in order to meet market demands. The evolution of chemical engineering is necessary to remain competitive in global trade. The ability of chemical engineering to cope with managing complex systems met in scientific and technological problems is addressed in this paper. Chemical Engineering is vital for sustainability: to satisfy both the market requirements for specific end-use properties of products and the social and environmental constraints of industrial-scale processes. An integrated system approach of complex multidisciplinary, non-linear non-equilibrium processes and phenomena occurring on different length and time scales is required. This will be obtained due to breakthroughs in molecular modeling, scientific instrumentation and related signal processing and powerful computational tools. The future of chemical engineering can be summarized by four main objectives: (1) Increase productivity and selectivity through intensification of intelligent operations and a multiscale approach to processes control; (2) Design novel equipment based on scientific principles and new production methods: process intensification using multifunctional reactors and microengineering and microtechnology (3) Extend chemical engineering methodology to product design and engineering using the "triplet 3PE molecular Processes-Product-Process Engineering" approach; (4) Implement multiscale application of computational chemical engineering modeling and simulation to real-life situations from the molecular scale to the production scale.


Author(s):  
Jean-Claude Charpentier

In today’s economy, Chemical Engineering must respond to the changing needs of the chemical process industry in order to meet market demands. The evolution of chemical engineering is necessary to remain competitive in global trade. The ability of chemical engineering to cope with scientific and technological problems is addressed in this paper. Chemical Engineering is vital for sustainability: to satisfy both the market requirements for specific end-use properties of products and the social and environmental constraints of industrial-scale processes. A multidisciplinary, multiscale approach to chemical engineering is evolving due to breakthroughs in molecular modelling, scientific instrumentation and related signal processing and powerful computational tools. The future of chemical engineering can be summarized by four main objectives: (1) Increase productivity and selectivity through intensification of intelligent operations and a multiscale approach to process control; (2) Design novel equipment based on scientific principles and new production methods: process intensification; (3) Extend chemical engineering methodology to product design and product focussed processing using the 3P Engineering “molecular Processes-Product-Process” approach; (4) Implement multiscale application of computational chemical engineering modelling and simulation to real-life situations from the molecular scale to the production scale.


2007 ◽  
Vol 7 (1 & 2) ◽  
pp. 8
Author(s):  
Reza Barzin ◽  
Syamsul Rizal Abd Shukor ◽  
Abdul Latif Ahmad

Process intensification (PI) is currently one of the most significant trends in chemical engineering and process technology. PI is a strategy of making dramatic reductions in the size of unit operations within chemical plants, in order to achieve production objectives. PI technology is able to change dramatically the whole chemical engineering industry pathway to a faster, cleaner and safer industry. Nonetheless, PI technology will be handicapped if such system is not properly controlled. There are some foreseeable problems in order to control such processes for instance, dynamic interaction between components that make up a control loop, response time of the instrumentations, availability of proper sensor and etc. This paper offers an overview and discussion on identifying potential problems of controlling intensified systems.


2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Rufat S. Abiev

Abstract Minimization of the costs with simultaneous increase in the raw materials and energy use efficiency is a challenge for the modern world. One of the most effective tools to solve this task is the use of process intensification (PI), first proposed by Ramshaw C. The incentive for process intensification, Proceedings, 1st Intl. Conf. Proc. Intensif. for Chem. Ind., 18, BHR Group, London, 1995, p. 1. and then extended by Stankiewicz AI, Moulijn JA. Process intensification: transforming chemical engineering. Chem Eng Prog 2000: 22–34. In the presented review, some principles of PI in chemical engineering and their application for wide variety of processes is discussed. The role of the Russian scientist with a research background is carried out in other countries.


Author(s):  
Gary A. Gabriele

Abstract Design for Assembly (DFA) can have a significant influence on the cost of a product. DFA is especially beneficial for products that are robotically assembled, due to the limitations placed on the product design by the automated assembly equipment. Automated assembly analysis systems have been developed to assess the assemblability of a product but, many lack an interface to the product CAD database. The lack of a CAD interface requires the user to examine every part in the assembly to determine the characteristics and features that promote efficient assembly. This is a time consuming and tedious process. An automated assembly analysis system is described that will automatically analyze a product design to determine if it can be assembled on a particular assembly system and suggest improvements in the design. Three main stages of the system are identified. The first stage determines if the individual parts of the assembly can be presented to the work station. The second stage determines if the individual parts of the assembly can be grasped and manipulated by the end effectors. The third stage determines if every part in the assembly can be positioned and inserted into the assembly to complete the assembly process. A prototype system was developed that addresses the second stage of the proposed automated assembly analysis system and is described herein. The Robotic Grip Determining (RGD) program examines a B-Rep solid model of a part to determine if it can be grasped by a modeled end effector. If the RGD program determines that the part can be grasped, a list of gripping positions are generated that describe how the end effector can grasp the part. These gripping positions can then be passed to the third stage of the proposed automated assembly-system.


1985 ◽  
Vol 66 ◽  
Author(s):  
Rustum Roy

ABSTRACTThe topic of education optimized for materials research is treated In sequence at four hierarchical levels starting with the most general.Materials Research is the earliest and best developed example within the physical sciences and engineering of an integrative field (discipline?). Yet very little thought and no research (including the relevant cognitive science) has addressed the subject of how best one can educate a cadre of materials researchers. The author will adduce Inductive and anecdotal data to point some fruitful directions in reorganizing the approach to education in integrative knowledge fields.The first important thesis of this paper is that we have failed to analyze correctly the appropriate hierarchical relationships among individual scientific disciplines, engineering departments, and technological research groupings.The second major point is that education for materials research is done is several departments (materials science, physics, electrical engineering, chemical engineering, etc.) and Indeed that some mix of disciplinary roots is desirable for the materials research cadre. Improvements will be proposed in four areas: (1) Optimum content of MSE curriculum, (2) the widespread introduction of MSE minors, (3) under-representation of electronic materials, pol ymers, ceramics.The third aspect deals with the modularization of the content and teaching materials to allow adaptation to local needs in a field like materials research. The international materials community has done rather well by establishing the Materials Education Council and the Journal of Materials Education, for producing and disseminating print media. The status and usage of JME will be described.


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