Synthesis of Inter-Plant Water Networks Involving Batch and Continuous Process
Date Issued
2011
Date
2011
Author(s)
Lin, Chun-Yen
Abstract
This work presents a mathematical technique for the synthesis of inter-plant water network,
where some of the plants involve batch and continuous processes.
To integrate both kinds of process units, two scenarios are investigated.
Scenario one is for continuous units in majority, a two-phase approach is proposed for this scenario.
First, all batch units are treated as operating in continuous mode, and the
inter-plant water network is synthesized for minimum fresh water consumption.
Policy of water storage for these batch units is then determined, on which they can be operated
as continuous units with the aids of a pair of input/output storage tanks for each batch unit.
The objective of the second phase is to minimize the capacity of storage tanks subject
to determined water flow rates.
Scenario two is for batch units in majority, where each continuous unit is divided into
a series of batch operating sections according to the start and end times of existing batch units.
A batch water network with or without storage tanks is synthesized accordingly.
The model formulation is based on superstructures, and the system is
designed according to two objectives including the minimization of fresh water consumption
and the minimization of storage tank size.
Illustrative examples are supplied to demonstrate the applicability of proposed
schemes for inter-plant water network synthesis.
Subjects
Inter-plant water network
Mathematical optimization
Process integration
Superstructure
Batch and continuous process
SDGs
Type
thesis
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