Targeting the optimal integration of steam networks: Mathematical tools and methodology

Maréchal, François; Kalitventzeff, Boris

doi:10.1016/s0098-1354(99)80034-9

Cited by 49 publications

(21 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this case, EASY is used to evaluate the optimal steam mass flow rates that maximize total site net power production. In fact, this software embeds linear models of steam networks and refrigeration cycles which allow a fast evaluation of their mass balances with little errors compared to more rigorous non-linear models [32,33].…”

Section: Maximum Net Electricity Generation In a Combined Sugar Ethamentioning

confidence: 99%

Synthesis and parameter optimization of a combined sugar and ethanol production process integrated with a CHP system

Morandin

Toffolo

Lazzaretto

et al. 2011

Energy

View full text Add to dashboard Cite

a b s t r a c tThe combined sugar and ethanol production process from sugar cane is a paradigmatic application for energy integration strategies because of the high number of hot and cold streams involved, the external hot utility requirement at two temperature levels for juice evaporation and crystallization, and the electricity demand for juice extraction by milling. These conditions make it convenient to combine the sugar-cane process with a CHP system fuelled by bagasse, the main by-product from juice extraction. The strategies, tools and expertise on energy integration developed separately by the research teams authoring this paper are applied here jointly to optimize the synthesis and the design parameters of the process and of the total site starting from the basic idea of dissociating the heat exchanger network design problem from the total site synthesis problem. At first the minimization of the external heat requirement for the process alone is pursued and results show that a one third reduction can be achieved by optimal heat integration. Then the use of the by-product bagasse for on-site power generation is considered and two bagasse-fuelled CHP systems are optimized along with some parts of the sugar and ethanol production process in order to obtain maximum total site net power. Results show a variety of interesting scenarios of combined sugar, ethanol and electricity production plants with considerably high electricity output.

show abstract

Section: Maximum Net Electricity Generation In a Combined Sugar Ethamentioning

confidence: 99%

Synthesis and parameter optimization of a combined sugar and ethanol production process integrated with a CHP system

Morandin

Toffolo

Lazzaretto

et al. 2011

Energy

View full text Add to dashboard Cite

show abstract

“…In the case of the proposed example, the waste incineration system and the steam requirement are defined as process units, while the steam network and the cooling water are defined as utilities whose sizes have to be optimized. The process integration model [9] computes the optimal flows in the utility system in order to satisfy the process requirement. At the same time, the mechanical power produced by the steam turbines is maximized.…”

Section: System Analysis Method: Process Integrationmentioning

confidence: 99%

“…It includes the heat recovery steam generator, the steam turbines and the pumps. The model is formulated as a mixed integer linear programming optimization problem, where the optimal layout of the steam network in terms of electricity production is computed according to the available heat profile in the steam generator [9,1]. The third sub-system model represents the cooling water system, which is used to cool down the fumes and the steam in the condenser.…”

Section: Case Study -Waste Incineration Systemmentioning

confidence: 99%

New Generic Approach for the Analysis of Energy Conversion System Models

Bolliger

Becker

Maréchal

2009

Computer Aided Chemical Engineering

View full text Add to dashboard Cite

This paper proposes a new approach in the field of energy conversion systems analysis and synthesis. The method is based on a generic and multi-platform description syntax, that clearly separates the information concerning the physical behavior of the modeled technology (e.g. mass and energy balances and chemical reactions) from the information necessary to apply one or more system analysis methods (e.g. process integration, Life Cycle Impact Assessment, thermo-economic evaluation,. . . ). The description syntax also contains other informations about the model, namely about its history, quality, scope or documentation. The approach encourages the development of reusable models, which can be easily assembled to create large superstructures from which optimal system configurations can be extracted. By dissociating technology models from the analysis and synthesis method, the approach allows the independent development of analysis methods and the consistent data transfer between models of different scales. The study of a fine chemical industry waste incineration system is presented to demonstrate the flexibility of the approach.

show abstract

“…The advantage of integrating a steam network can be demonstrated with the Integrated Composite Curves [44,66], which illustrate how well the steam Rankine cycle is integrated within the remaining processes of the oil and gas system (Figure 11). The area between the steam network and the other process stream curves corresponds to the exergy that cannot be further recovered in the heat exchanger network.…”

Section: Steam Networkmentioning

confidence: 99%

Life performance of oil and gas platforms: Site integration and thermodynamic evaluation

Nguyen

Fülöp

Breuhaus

et al. 2014

Energy

View full text Add to dashboard Cite

Oil and gas platforms are energy-intensive systems, which operate under changing boundary conditions over time. In this paper, the life performance of an offshore platform is analysed by comparing three representative stages of an oil field (early-life, plateau and end-life productions). The energy requirements are assessed by a process integration study, and the system inefficiencies are pinpointed by performing an exergy accounting. The heating and cooling requirements vary significantly over time, and most inefficiencies take place in processes where chemical exergy is consumed ( 50-55 %), thermal exergy is transferred ( 15-20 %), or mechanical exergy is varied ( 10-15 %). These findings are valid for all production periods: this suggests that more attention should be paid on a proper integration of the processing and utility plants, by, for instance, recovering heat from the turbine exhausts and from the exported gas. Multi-objective optimisations are conducted for evaluating the integration of steam and organic Rankine cycles, considering thermodynamic, economic and environmental performance indicators. They indicate that the profitability of a given improvement measure mainly depends on (i) the field properties, (ii) the platform operating strategy, and (iii) the production stage of the oil field. The implementation of steam networks appears promising, as it results in a better performance of the offshore platform and in larger economic profits.

show abstract

Targeting the optimal integration of steam networks: Mathematical tools and methodology

Cited by 49 publications

References 5 publications

Synthesis and parameter optimization of a combined sugar and ethanol production process integrated with a CHP system

Synthesis and parameter optimization of a combined sugar and ethanol production process integrated with a CHP system

New Generic Approach for the Analysis of Energy Conversion System Models

Life performance of oil and gas platforms: Site integration and thermodynamic evaluation

Contact Info

Product

Resources

About