Comparison and Optimization of Mid-low Temperature Cogeneration Systems for Flue Gas in Iron and Steel Plants

Zhang, Lihua; Wu, Lijun; Zhang, Xiaohong; Ju, Guidong

doi:10.1016/s1006-706x(13)60193-4

Cited by 18 publications

(9 citation statements)

References 16 publications

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“…Karellas et al (2013) investigated waste heat recovery cycles for the cement industry, finding that, if the exhaust gas temperature is below 310 • C, the organic Rankine cycle (ORC) is more efficient than the steam cycle. Zhang et al (2013) compared ORC, steam cycle, and cascaded steam-organic cycle options for heat recovery from steel plants. For exhaust gas temperatures between 200 and 300 • C, the best option found was an ORC with R141b as working fluid.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Organic Rankine Cycles for Waste Heat Recovery From Aluminum Production Plants

et al. 2019

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This paper presents the optimization of organic Rankine cycles (ORCs) for recovering waste heat from a hypothetical aluminum production plant to be installed in Norway. The case study is particularly interesting because it features two hot streams at different temperatures (the pot exhaust gases and the cell wall cooling air), which make available about 16 MWth below 250 • C. First, a recently proposed cycle optimization approach is adopted to identify the most promising working fluid and optimize the cycle variables (pressures, temperatures, mass flow rates) for the maximum energy performance. The analysis includes both pure fluids, including recently synthesized refrigerants, and binary zeotropic mixtures assessing in total 102 working fluids. The best pure fluid in terms of exergy efficiency turns out to be HFE-347mcc (which can achieve a target exergy efficiency of 85.28%), followed by neopentane, butane, and R114. HFO-1336mzz appears to be one of the most promising non-flammable alternatives with low Global Warming Potential (GWP). The mixture leading to the highest exergy efficiency is isobutane-isopentane, which can increase the net electrical power output by up to 3.3% compared to pure fluids. The systematic techno-economic optimization, repeated for two different electricity prices, shows that RE347mcc is the best option in both low and high electricity prices. The cost of the cycle using HFO-1336mzz is penalized by the larger evaporation heat (negatively influencing the heat integration) and the smaller regenerator.

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Section: Introductionmentioning

confidence: 99%

Optimization of Organic Rankine Cycles for Waste Heat Recovery From Aluminum Production Plants

et al. 2019

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“…In iron and steel plants, it is possible to reuse scrap to reduce material cost. During the steel production, the by-product and semi-finished product contain much of the thermal energy which can be harvested to reduce energy consumption [17]. Establishment of cogeneration systems exist in these environments where the valuable steam and fuels can be partially recovery to be utilized to generate electricity in combined cycles.…”

Section: Resource Recycle and Reusementioning

confidence: 99%

Methodology – A Review of Intelligent Manufacturing: Scope, Strategy and Simulation

Sun

2018

Communications in Computer and Information Science

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This paper presents a critical review of some existing modelling, control and optimization techniques for energy saving, carbon emission reduction in manufacturing processes. The study on various production issues reveals different levels of intelligent manufacturing approaches. Then methods and strategies to tackle the sustainability issues in manufacturing are summarized. Modelling tools such as discrete (dynamic) event system (DES/DEDS) and agent-based modelling/simulation (ABS) approaches are reviewed from the production planning and control prospective. These approaches will provide some guidelines for the development of advanced factory modelling, resource flow analysis and assisting the identification of improvement potentials, in order to achieve more sustainable manufacturing.

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“…tp e e WW Q    (12) The exergy efficiency of the system is ex (14) Where E in represents the exergy of the system under ideal condition. For a stable system, the irreversible loss of the system I is calculated as the following formula: (15) Here, in the formula (15) For the first stage cycle, State a to b represents an adiabatic expansion process of steam in the turbine.…”

Section: Nomenclaturementioning

confidence: 99%

“…It's worth noting that, we choose a hydraulic diaphragm metering pump as 14 the working fluid pump and the turbine isentropic efficiency  t is 0.7 is given by the product supplier, Shen Bei pumps manufacturing Co, Ltd. In addition, after resorting to the statements of J.…”

Section: Nomenclaturementioning

confidence: 99%

“…The thermal efficiency of combined cycle system is higher than that of the single cycle system, and the S-ORC could utilize energy comprehensively in accordance with quality and quantity which embodies the idea of making use of energy according to the grade. [14], indicating that it is feasible to take advantage of waste heat for the S-ORC power generation system adopting steam with large latent heat of vaporization and organic working fluid with small latent heat of vaporization.…”

Section: Introductionmentioning

confidence: 99%

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Comparative study of waste heat steam SRC, ORC and S-ORC power generation systems in medium-low temperature

Zhang

Wang

et al. 2016

Applied Thermal Engineering

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For Steam Rankine Cycle (SRC), Organic Rankine Cycle (ORC) andSteam-Organic Rankine Cycle (S-ORC) power systems, in this paper, mathematical models are developed to explore the feasibility that combines the fluid-low temperature (150-350 C) waste heat steam and low-boiling point organic working fluids for power generation. Using the numerical models, we calculate and compare thermal efficiency, exergy efficiency, operation pressure, generating capacity, etc. of three power systems, namely SRC, ORC and S-ORC under the same heat source conditions. The results show that under the condition of 150-210 C heat source, ORC has the highest thermal efficiency, exergy efficiency and power generation; while at 210-350 C, the performance of the S-ORC has a distinct advantage. Its thermal efficiency and exergy efficiency are higher than those of the SRC and ORC power systems. HIGHLIGHTSSRC, ORC and S-ORC three kinds of power systems are computed and compared under the condition of the same heat source.  For low enthalpy heat, ORC is more efficient than SRC in recovering the latent heat of condensation of steam.  S-ORC power generation system has a better matching of heat source temperature. The ORC is optimal under the condition of 150 C to 210 C, while S-ORC has obvious advantages under the condition of 210 C to 350 C.

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Comparison and Optimization of Mid-low Temperature Cogeneration Systems for Flue Gas in Iron and Steel Plants

Cited by 18 publications

References 16 publications

Optimization of Organic Rankine Cycles for Waste Heat Recovery From Aluminum Production Plants

Optimization of Organic Rankine Cycles for Waste Heat Recovery From Aluminum Production Plants

Methodology – A Review of Intelligent Manufacturing: Scope, Strategy and Simulation

Comparative study of waste heat steam SRC, ORC and S-ORC power generation systems in medium-low temperature

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