scholarly journals Polymorph Selection and Process Intensification in a Continuous Crystallization–Milling Process: A Case Study on l-Glutamic Acid Crystallized from Water

2019 ◽  
Vol 23 (3) ◽  
pp. 361-374 ◽  
Author(s):  
Till Köllges ◽  
Thomas Vetter
Keyword(s):  
Glutamic Acid ◽  
Process Intensification ◽  
Milling Process ◽  
Continuous Crystallization ◽  
Polymorph Selection

scholarly journals Surface Integrity Investigation to Determine Rough Milling Effects for Assessment of Machining Allowance for Subsequent Finish Milling of Alloy 718

2021 ◽  
Vol 5 (2) ◽  
pp. 48
Author(s):  
Jonas Holmberg ◽  
Anders Wretland ◽  
Johan Berglund ◽  
Tomas Beno ◽  
Anton Milesic Karlsson
Keyword(s):  
Surface Integrity ◽  
Milling Process ◽  
Depth Of Cut ◽  
Machined Surface ◽  
Milling Operations ◽  
Milling Operation ◽  
Machining Allowance ◽  
Rough Milling

The planned material volume to be removed from a blank to create the final shape of a part is commonly referred to as allowance. Determination of machining allowance is essential and has a great impact on productivity. The objective of the present work is to use a case study to investigate how a prior rough milling operation affects the finish machined surface and, after that, to use this knowledge to design a methodology for how to assess the machining allowance for subsequent milling operations based on residual stresses. Subsequent milling operations were performed to study the final surface integrity across a milled slot. This was done by rough ceramic milling followed by finish milling in seven subsequent steps. The results show that the up-, centre and down-milling induce different stresses and impact depths. Employing the developed methodology, the depth where the directional influence of the milling process diminishes has been shown to be a suitable minimum limit for the allowance. At this depth, the plastic flow causing severe deformation is not present anymore. It was shown that the centre of the milled slot has the deepest impact depth of 500 µm, up-milling caused an intermediate impact depth of 400 µm followed by down milling with an impact depth of 300 µm. With merged envelope profiles, it was shown that the effects from rough ceramic milling are gone after 3 finish milling passes, with a total depth of cut of 150 µm.

Motion-Based Multiple Object Tracking of Ultrasonic-Induced Nucleation: A Case Study of l-Glutamic Acid

2017 ◽  
Vol 17 (10) ◽  
pp. 5007-5011 ◽  
Author(s):  
Zhenguo Gao ◽  
Dan Zhu ◽  
Yuanyi Wu ◽  
Sohrab Rohani ◽  
Junbo Gong ◽  
...  
Keyword(s):  
Glutamic Acid ◽  
Object Tracking ◽  
Multiple Object Tracking ◽  
Multiple Object

Continuous Crystallization and Polymorph Dynamics in the l-Glutamic Acid System

2014 ◽  
Vol 18 (11) ◽  
pp. 1382-1390 ◽  
Author(s):  
Tsai-Ta C. Lai ◽  
Steven Ferguson ◽  
Laura Palmer ◽  
Bernhardt L. Trout ◽  
Allan S. Myerson
Keyword(s):  
Glutamic Acid ◽  
Acid System ◽  
Continuous Crystallization

Asymmetric synthesis of chiral amine in organic solvent and in-situ product recovery for process intensification: A case study

2017 ◽  
Vol 117 ◽  
pp. 97-104 ◽  
Author(s):  
Yamini Satyawali ◽  
Ehiaze Ehimen ◽  
Lieve Cauwenberghs ◽  
Miranda Maesen ◽  
Pieter Vandezande ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Asymmetric Synthesis ◽  
Process Intensification ◽  
Product Recovery ◽  
Chiral Amine ◽  
In Situ Product Recovery

scholarly journals Process Debottlenecking and Retrofit of Palm Oil Milling Process via Inoperability Input-Output Modelling

2018 ◽  
Vol 152 ◽  
pp. 01012 ◽  
Author(s):  
May May Tan ◽  
Viknesh Andiappan ◽  
Yoke Kin Wan
Keyword(s):  
Palm Oil ◽  
Production Capacity ◽  
Algebraic Approach ◽  
Milling Process ◽  
Screw Press ◽  
Economic Feasibility ◽  
Cost Ratio ◽  
Input Output ◽  
Crude Palm Oil

In recent years, there has been an increase in crude palm oil (CPO) demand, resulting in palm oil mills (POMs) seizing the opportunity to increase CPO production to make more profits. A series of equipment are designed to operate in their optimum capacities in the current existing POMs. Some equipment may be limited by their maximum design capacities when there is a need to increase CPO production, resulting in process bottlenecks. In this research, a framework is developed to provide stepwise procedures on identifying bottlenecks and retrofitting a POM process to cater for the increase in production capacity. This framework adapts an algebraic approach known as Inoperability Input-Output Modelling (IIM). To illustrate the application of the framework, an industrial POM case study was solved using LINGO software in this work, by maximising its production capacity. Benefit-to-Cost Ratio (BCR) analysis was also performed to assess the economic feasibility. As results, the Screw Press was identified as the bottleneck. The retrofitting recommendation was to purchase an additional Screw Press to cater for the new throughput with BCR of 54.57. It was found the POM to be able to achieve the maximum targeted production capacity of 8,139.65 kg/hr of CPO without any bottlenecks.

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