scholarly journals Computer-Aided Process Intensification of Natural gas to Methanol Process

2021 ◽  
Author(s):  
Mohammed Sadaf Monjur ◽  
M. M. Faruque Hasan
Keyword(s):  
Building Block ◽  
Process Intensification ◽  
Ghg Emission ◽  
Environmentally Sustainable ◽  
Process Configuration ◽  
New Process ◽  
Computer Aided ◽  
Commodity Chemicals ◽  
Optimization Methodology ◽  
Block Based

The recent revolution in shale gas has presented opportunities for distributed manufacturing of key commodity chemicals, such as methanol, from methane. However, the conventional methane-to-methanol process is energy intensive which negatively affects the profitability and sustainability. We report an intensified process configuration that is both economically attractive and environmentally sustainable. This flowsheet is systematically discovered using the building block-based representation and optimization methodology. The new process configuration utilizes membrane-assisted reactive separations and can have as much as 190% higher total annual profit compared to a conventional configuration. Additionally, it has 57% less CO2-equivalent greenhouse gas (GHG) emission. Such drastic improvement highlights the advantages of building block-based computer-aided process intensification method.

Load-Transmitter Constraint Sets: Part I—An Effective Tool for Visualizing Load Flow in Compliant Mechanisms and Structures

2010 ◽  
Author(s):  
Girish Krishnan ◽  
Charles Kim ◽  
Sridhar Kota
Keyword(s):  
Building Block ◽  
Deformation Behavior ◽  
Design Methodology ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Load Flow ◽  
Mathematical Framework ◽  
Design Synthesis ◽  
Fundamental Building Block ◽  
Block Based

Visualizing load flow aids in conceptual design synthesis of machine components. In this paper, we present a mathematical framework to visualize load flow in compliant mechanisms and structures. This framework uses the concept of transferred forces to quantify load flow from input to the output of a compliant mechanism. The key contribution of this paper is the identification a fundamental building block known as the Load-Transmitter Constraint (LTC) set, which enables load flow in a particular direction. The transferred force in each LTC set is shown to be independent of successive LTC sets that are attached to it. This enables a continuous visualization of load flow from the input to the output. Furthermore, we mathematically relate the load flow with the deformation behavior of the mechanism. We can thus explain the deformation behavior of a number of compliant mechanisms from literature by identifying its LTC sets to visualize load flow. This method can also be used to visualize load flow in optimal stiff structure topologies. The insight obtained from this visualization tool facilitates a systematic building block based design methodology for compliant mechanisms and structural topologies.

scholarly journals Restriction of Conformation Transformation in Excited State: An Aggregation-Induced Emission Building Block Based on Stable Exocyclic C=N Group

iScience ◽  
2020 ◽  
Vol 23 (10) ◽  
pp. 101587
Author(s):  
Wentao Yu ◽  
Han Zhang ◽  
Ping-An Yin ◽  
Fan Zhou ◽  
Zhiming Wang ◽  
...  
Keyword(s):  
Excited State ◽  
Building Block ◽  
Aggregation Induced Emission ◽  
Block Based

A Flexible Discrete Building Block Synthesis Approach As Basis for the Design of Planar Linkages

2017 ◽  
Author(s):  
Simon Laudahn ◽  
Franz Irlinger ◽  
Kassim Abdul-Sater
Keyword(s):  
Building Block ◽  
Integrated Design ◽  
Optimal Solution ◽  
Design Tool ◽  
Grid Search ◽  
Approximate Synthesis ◽  
Synthesis Procedure ◽  
Block Based ◽  
Planar Linkages ◽  
Synthesis Approach

In this paper we present a computational approximate synthesis procedure for the planar RR chain. Our approach is based on a grid search and takes an arbitrary amount of user-defined task positions for the two outer bodies of the chain and restrictions for both joints into account. The result of this synthesis approach is not only one optimal solution, but a list of several possible solutions which are ranked according to their performance. The approach aims at being used in building block-based synthesis procedures of more complex linkages. The method shall later be included into a CAD-integrated design tool for planar linkages.

An Innovative Compression Mold Design for Manufacture of Reel Mower Helical Blades

2016 ◽  
Vol 851 ◽  
pp. 255-258
Author(s):  
Chung Ming Tan ◽  
Gin Yei Lin
Keyword(s):  
Computer Aided Engineering ◽  
Roll Forming ◽  
Forming Process ◽  
Compression Process ◽  
New Process ◽  
Computer Aided ◽  
Potential Applications ◽  
Actual Design ◽  
Roll Forming Process ◽  
Deform 3D

This research is focused on the helical blades used in the reel mower machine which uses 5 to 10 helical blades. These blades are normally manufactured using the roll forming process which has certain demerits. This research is done to develop a new process known as compression process for the manufacture of blades using computer aided engineering. To save cost, time as well as waste of material the computerized simulation process is being used. The design of the blade and the die for the compression and modification are done using software SolidWorks. Simulation is performed using software DEFORM-3D. The simulation result and the actual design are compared using software Geomagic. This study also shows the potential applications of computer aided engineering and its benefits in verifying and reinventing the part manufacturing process.

An Electron-Deficient Building Block Based on the B←N Unit: An Electron Acceptor for All-Polymer Solar Cells

2015 ◽  
Vol 55 (4) ◽  
pp. 1436-1440 ◽  
Author(s):  
Chuandong Dou ◽  
Xiaojing Long ◽  
Zicheng Ding ◽  
Zhiyuan Xie ◽  
Jun Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Building Block ◽  
Polymer Solar Cells ◽  
Block Based

scholarly journals The spinning cloth disc reactor for immobilized enzymes: A new process intensification technology for enzymatic reactions

2013 ◽  
Vol 221 ◽  
pp. 407-417 ◽  
Author(s):  
Xudong Feng ◽  
Darrell Alec Patterson ◽  
Murat Balaban ◽  
Guillaume Fauconnier ◽  
Emma Anna Carolina Emanuelsson
Keyword(s):  
Process Intensification ◽  
Immobilized Enzymes ◽  
Enzymatic Reactions ◽  
New Process

scholarly journals Process Intensification and its Applications - A Critical Review

2020 ◽  
Vol 13 (4) ◽  
pp. 402-412
Author(s):  
Sarthak Vaidya ◽  
Haribalakrishnammal Vaidyanathan ◽  
Sonali R Dhokpande
Keyword(s):  
Energy Consumption ◽  
Residence Time ◽  
Industrial Waste ◽  
Process Intensification ◽  
High Energy ◽  
Alternative Pathways ◽  
New Process ◽  
Micro Reactors ◽  
The Cost ◽  
High Energy Consumption

The problems faced by the various industries are high energy consumption which further increases the cost of production followed by reduced productivity and conversion, longer residence time, and pollution caused by industrial waste. Many researchers have found various alternative pathways to overcome these drawbacks. The same products were obtained in a better way by process intensification. Any process can be intensified either by introducing entirely a new process or by combing two or more conventional methods to form a new hybrid process e.greactive distillation, micro-reactors, etc. Due to an increase in population and less availability of land, reducing the chemical plant footprints is highly appreciable which is possible by process intensification. In this paper, we have reviewed the majority of the processes that have been intensified into a new process such as bioprocesses, extraction, distillation, leaching, Biofuels production, Desalination, etc.

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