A1 Journal article (refereed), original research

A Superstructure-based Methodology for Simultaneously Sizing and Arranging Additional Evaporator Bodies in Multiple-effect Evaporator Plants


Publication Details
Authors: Neto Márcio R. Vianna, Saari, Jussi, Vakkilainen, Esa K., Cardoso Marcelo, Oliveira Éder D.
Publication year: 2020
Language: English
Related Journal or Series Information: J-For: the Journal of Science and Technology For Forest Products and Processes
Volume number: 7
Issue number: 6
ISSN: 1927-6311
eISSN: 1927-632X
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication

Abstract

In this paper, a novel methodology based on process superstructures
that allows for structure and heat transfer areas to be simultaneously
considered in optimization without having to resort to any previously selected
arrangements is described. This methodology is applied to an industrial
evaporator case study of simultaneously sizing and determining the best way to
arrange additional evaporator bodies in an existing system to increase maximum
load. An equation-oriented simulator for chemical pulp mill evaporator plants,
based on a Trust-Region method, was developed and used in conjunction with
Differential Evolution optimizer. Two multiple-effect evaporator plants were
used as case studies: a small 3-effect system, to highlight the workings of the
new method, and a more realistic 6-effect system, both of which were considered
to undergo a 15% increase in black liquor mass flow rate. The methodology was
capable of determining the optimal arrangement and heat transfer areas for both
systems.


Last updated on 2020-18-09 at 08:48