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Development of an energy module for the multi-objective optimisation of complex distillation processes

Abstract

Reduction of energy consumption has increasingly come into sharp focus in the chemical process industry. This is of great value not only for existing plant but also for the development of new processes. Therefore, the challenge for process design engineers to develop an integrated chemical process that simultaneously satisfies economic and environmental objectives has increased considerably. Particularly, multi-objective optimization in the chemical industry has become increasingly popular during the last decade. The main problem lies, in selecting the alternative best design during decision making with multiple and often conflicting objectives. This thesis work presents a methodology for the multi-objective optimization of process design alternatives under economic and environmental objectives and also to establish the linkage between exergy and the environment. Four distillation units design alternatives with increasing level of heat integration were considered. Each design is analysed from exergy, potential environmental impact (PEI) and economic point of view. A non-dominated solution known as the ''Pareto optimal solution'' is generated for decision making. The thermodynamic efficiency indicates where exergy losses occur. The demand for industrial process heat by means of solar energy has generated much interest because it offers an innovative way to reduce operating cost and improve clean renewable electric  More>>
Publication Date:
Jun 04, 2010
Product Type:
Thesis/Dissertation
Report Number:
ETDE-DE-2557
Resource Relation:
Other Information: TH: Diss. (Dr.-Ing.)
Subject:
42 ENGINEERING; COAL; ENERGY EFFICIENCY; COMPARATIVE EVALUATIONS; DISTILLATION; ECONOMICS; ELECTRIC POWER; ENVIRONMENT; EXERGY; SIMULATION; SOLAR THERMAL POWER PLANTS
OSTI ID:
21487832
Research Organizations:
Technische Univ. Cottbus (Germany). Fakultaet fuer Umweltwissenschaften und Verfahrenstechnik
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
TRN: DE11GC725
Availability:
Commercial reproduction prohibited; OSTI as DE21487832
Submitting Site:
DE
Size:
197 pages
Announcement Date:
Oct 27, 2011

Citation Formats

Tijani, Alhassan Salami. Development of an energy module for the multi-objective optimisation of complex distillation processes. Germany: N. p., 2010. Web.
Tijani, Alhassan Salami. Development of an energy module for the multi-objective optimisation of complex distillation processes. Germany.
Tijani, Alhassan Salami. 2010. "Development of an energy module for the multi-objective optimisation of complex distillation processes." Germany.
@misc{etde_21487832,
title = {Development of an energy module for the multi-objective optimisation of complex distillation processes}
author = {Tijani, Alhassan Salami}
abstractNote = {Reduction of energy consumption has increasingly come into sharp focus in the chemical process industry. This is of great value not only for existing plant but also for the development of new processes. Therefore, the challenge for process design engineers to develop an integrated chemical process that simultaneously satisfies economic and environmental objectives has increased considerably. Particularly, multi-objective optimization in the chemical industry has become increasingly popular during the last decade. The main problem lies, in selecting the alternative best design during decision making with multiple and often conflicting objectives. This thesis work presents a methodology for the multi-objective optimization of process design alternatives under economic and environmental objectives and also to establish the linkage between exergy and the environment. Four distillation units design alternatives with increasing level of heat integration were considered. Each design is analysed from exergy, potential environmental impact (PEI) and economic point of view. A non-dominated solution known as the ''Pareto optimal solution'' is generated for decision making. The thermodynamic efficiency indicates where exergy losses occur. The demand for industrial process heat by means of solar energy has generated much interest because it offers an innovative way to reduce operating cost and improve clean renewable electric power. Concentrated Solar Thermal Power (CSP) can provide solution to global energy problems within a relatively short time and is capable of contributing to carbon dioxide reduction, which is an important step towards zero emissions in the process industries. This work provides an overview of a simulation model to evaluate the environmental and economic performance of two case studies of solar thermal power plants. A methodology is presented to integrate solar thermal power plant into industrial processes and this is then compared with an existing hydrocarbon recovery (HCR) plant that depends on coal as its energy source. The two process design alternatives where simulated using the process simulator Aspen Plus trademark. This thesis work also evaluates two types of power plants based on coal. The plants considered provide utility systems such as steam and electrical energy to the process plants. Exergy analysis was performed for each type of plant. The standard PEI calculation procedure has been modified for consideration of specific energy resources or power plants. (orig.)}
place = {Germany}
year = {2010}
month = {Jun}
}