A knowledge based system for the design of ro-desalination plants

Papafotiou, K.; Assimacopoulos, D.; Marinos-Kouris, D.

doi:10.1016/0011-9164(91)85174-s

Cited by 3 publications

(2 citation statements)

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“…In the first level, the membrane characteristics and product constraints can be determined, whereas a second level identifies the RO network typology and its operating conditions for desalination applications. 4 Superstructure optimization of membrane networks has received immense interest in recent years. [5][6][7] The approach gives rich stream assignments between fresh feed streams, unit operations, and product streams.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of split partial second pass reverse osmosis network for desalination applications

2013

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Reverse osmosis (RO) network design problem is presented in this study for seawater desalination. The RO pressure vessel is multiple spiral wound modules connected in series. We exploit in this study the RO pressure vessel operation by considering stream property variations within the pressure vessel itself. The design problem allows extraction of high-quality permeates from different locations along the pressure vessel length. Superstructure optimization is adopted to model the RO network in order to find: (1) optimal arrangement of the process units, (2) optimal permeate extraction locations, and (3) production of several permeate streams with different qualities. Several case studies are presented to show the applications of the proposed mathematical programming model. In general, lower treatment cost and higher permeate recovery can be achieved by allowing permeate extraction streams from the RO pressure vessels.

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Section: Introductionmentioning

confidence: 99%

Optimal design of split partial second pass reverse osmosis network for desalination applications

2013

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“…The ultimate aim of specific simulators is to produce more accurate results within the environment which is tailored to the needs of each flowsheet. [20][21][22][23][24] Although hydrometallurgical processes are included in the computational environment of many commercial process simulators, the mathematical models used are oversimplified and, therefore, inappropriate for more detailed simulation. Furthermore, the database of thermophysical properties, reaction kinetics, and transport coefficients is limited to a few commercially popular solids and pulp solutions.…”

Section: Introductionmentioning

confidence: 99%

Object-oriented simulation of hydrometallurgical processes: Part I. Requirements and implementation

Kiranoudis

Voros

Kritikos

et al. 1997

Metall Mater Trans B

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Flowsheeting is an important engineering activity, arguably the most important, because it is the basis for analyzing process interactions within a specific flowsheet. An effective flowsheeting program can enhance the design procedure, and thus, improve the entire decision-making strategy. A number of requirements make the development of a flowsheeting system a complex task; useful and directed assistance requires a meaningful representation of process models to be kept in a computable form. The system should furthermore have the flexibility to provide support for exploration, evolution, cooperation, and integration. The described work addressed the preceding issues, and proposes solution for their achievement using a modular steady-state simulation tool (Process Integrated Simulator for Metallurgical Applications (PRISMA)) that is developed in order to model and simulate hydrometallurgical processes. A review of the simulator structure, along with its operation, is presented. Its development is based on object-oriented technology aspects appropriately analyzed and emphasized. User input to the simulator consists of flowsheet description, specification of the unit design variables and feed streams, as well as appropriate figures for the economic evaluation of the plant. The information introduced is passed to the simulator by means of an appropriate user interface developed in object-oriented code. Flowsheet computations are carried out by means of the execution part of the simulator.

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