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Coordination of process integration and exergoeconomic methodology for analysis and optimization of a pulp and paper mill

Fani, M ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. Publisher: 2009
  3. Abstract:
  4. By simultaneously applying pinch technology and the exergoeconomic method to a complex process system, beneficial and energy-efficient measures are identified. The "three-link-model" exergoeconomic methodology optimizes the design and operability of a system. In this work, contrary to traditional exergoeconomic methods, a reversed method is used. The approach proposed for the optimization of such a complex system is to iteratively optimize subsystems. Since the reversed exergoeconomic method is used, assumptions considered by Tsatsaronis (based on four assumptions for calculating the cost-optimal exergetic efficiency and relative cost difference) are not applicable and new assumptions are to be considered. Unlike traditional exergoeconomic methods, the product exergetic specific cost is considered to be known and the objective will be to maximize the exergetic cost of the fuel. Heat flows costs are calculated with the assistance of a Pinch analysis. The strength of the combination of a Pinch analysis and the exergoeconomic method is elucidated in a case study applied to the Mazandaran wood and paper industry. Replacement of the pressure valve and Direct Cyclone Contact Evaporation (DCCE) is proposed, while by selection of the optimum decision variable and applying Pinch technology simultaneously, the recoverable black liquor could be increased by 7% and energy consumption decreased by 12%. © Sharif University of Technology, August 2009
  5. Keywords:
  6. Exergoeconomic methodology ; Optimization ; Process system ; Pulp and paper ; Black liquor ; Complex Processes ; Complex systems ; Cost differences ; Energy consumption ; Energy efficient ; Exergetic efficiency ; Heat flows ; Optimum decision ; Paper industries ; Pinch analysis ; Pinch technology ; Pressure valves ; Process integration ; Pulp and paper mill ; Specific cost ; Coordination reactions ; Energy efficiency ; Energy management ; Paper ; Paper and pulp industry ; Paper and pulp mills ; Pulp ; Technology ; Wastewater treatment ; Cost benefit analysis ; Cost-benefit analysis ; Energy use ; Exergy ; Industrial technology ; Production cost ; Pulp and paper industry ; Replacement ; Costs ; Economic analysis ; Effluent Treatment ; Energy ; Paper Mills ; Pulp Mills ; Asia ; Eurasia ; Iran ; Mazandaran ; Middle East
  7. Source: Scientia Iranica ; Volume 16, Issue 4 B , 2009 , Pages 301-312 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_3235.html