Conceptual design of a crystallization-based trioxane production process

Author(s):  
Christian Frederik Breitkreuz ◽  
Maximilian Dyga ◽  
Esther Forte ◽  
Fabian Jirasek ◽  
Jan de Bont ◽  
...  
2019 ◽  
Vol 252 ◽  
pp. 06014 ◽  
Author(s):  
Anna Rudawska ◽  
Anna Flechsig ◽  
Izabela Miturska

Production is the most important and major activity of a production system. It may relate to goods used in various industries, as well as in agriculture or horticulture. The aim of this article is to analyse a selected production process and to propose several technical and organisational changes within the process of producing cucumbers in greenhouses in the form of a conceptual design. The scope of the article includes analysis and presentation of the current state of the selected production system, presentation of the modification project, as well as the possible impact of the proposed changes on the process under analysis. The subject of analysis herein is the greenhouse equipment, the production process organisation, technical facilities, production quality system functioning, proposition of changes and their effect on production. The analysis and modifications involved the production of cucumbers in greenhouses and their further preparation for sales, i.e. planting, harvesting, loading, segregating, weighing, packing and greenhouse liquidation. The article presents technical and organisational changes related with: the company’s technological facilities, space organisation in the production hall, recordkeeping of hours worked, as well as the number of employees. The aforementioned modifications will effect in inter alia: reduced working time, elimination of redundant stoppages and modernisation of technological facilities.


2020 ◽  
Vol 36 (67) ◽  
pp. 31-47
Author(s):  
Javier Gómez Maturano

Supply chains must align their goals with those of sustainable development and modify practices that compromise the ability of future generations to meet their needs. One of the practices that must be modified is the generation of large volumes of Municipal Solid Waste [MSW] that results from a linear production process. Traditional supply chains are jointly responsible for this problem. A circular production process in which the consumption of natural resources is reduced is possible through Reverse Supply Chains. For this, it is necessary to have tools for the sustainable design of MSW recovery networks. The objective of this work is to propose a systems engineering procedure that serves this purpose. The main contribution is the proposal of an explicit and concrete way to conceptually design RSC, useful for decision makers. The procedure consists of four interconnected stages that constitute an interactive system that allow the design from the problem formulation to its validation. The procedure is applied to design a RSC for MSW in the Mexican municipality of Netzahualcoyotl. The designed RSC can move a volume of 420 tons of MSW per day in an urban area of just 50 square kilometers. The scope of this work is a conceptual design that still requires field testing to validate the estimated results and make a feedback process that allows strengthening the conceptual design procedure.


Author(s):  
Calin-Cristian Cormos ◽  
Arpad Imre-Lucaci ◽  
Ana-Maria Cormos ◽  
Zsolt Tasnadi-Asztalos ◽  
Mihaela Diana Lazar

Author(s):  
Ehud Kroll ◽  
Sridhar S. Condoor ◽  
David G. Jansson
Keyword(s):  

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