Energy Treatment of Solid Municipal Waste in Combination with Biomass by Decentralized Method with the Respect to the Negative Effects on the Environment

Rimár, Miroslav; Kulikova, Olha; Kulikov, Andrii; Fedak, Marcel

doi:10.3390/su13084405

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…As examples, studies by Li et al (2013) [41], Gong et al (2019) [57], Shen et al (2019) [58], and Zhao et al (2019) [33] delivered important findings related to the potential reduction in energy consumption as a result of optimized SC operation, while Chen et al (2020) [62], Geng et al (2020) [59], and Dai et al (2021) [53] explored both energy efficiency and CO 2 emissions aspects. This is in line with recent developments in industrial processes and energy systems optimization [63,64], where the calculation of CO 2 emissions is a widely adopted means of assessing the environmental impact [52,65]; only rarely supplemented by calculation of other GHG emissions [66,67] or expressed via CO 2 equivalent [68,69]. The analysis of GHGs other than CO 2 is, on the other hand, common in the evaluation and optimization of combustion processes and power plants [70,71].…”

Section: Contribution Of This Studymentioning

confidence: 62%

Energy and Environmental Assessment of Steam Management Optimization in an Ethylene Plant

Variny

Hanus²,

Blahušiak³

et al. 2021

IJERPH

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Steam crackers (ethylene plants) belong to the most complex industrial plants and offer significant potential for energy-saving translated into the reduction of greenhouse gas emissions. Steam export to or import from adjacent units or complexes can boost the associated financial benefit, but its energy and environmental impact are questionable. A study was carried out on a medium-capacity ethylene plant using field data to: 1. Estimate the energy savings potential achievable by optimizing internal steam management and optimizing steam export/import; 2. Quantify the associated change in air pollutant emissions; 3. Analyze the impact of the increasing carbon price on the measures adopted. Internal steam management optimization yielded steam let-down rate minimization and resulted in a 5% (87 TJ/year) reduction in steam cracker’s steam boiler fuel consumption and the associated cut of CO2 emissions by almost 4900 t/year and that of NOx emissions by more than 5 t/year. Steam import to the ethylene plant from the refinery proved to be purely economic-driven, as it increased the net fuel consumption of the ethylene plant and the refinery complex by 12 TJ/year and resulted in an increase of net emissions of nearly all considered air pollutants (more than 7000 t/year of CO2, over 15 t/year of NOx, over 18 t/year of SOx) except for CO, where the net change was almost zero. The effect of external emissions change due to the associated backpressure electricity production surplus (over 11 GWh/year) was too low to compensate for this increase unless fossil fuel-based electricity production was considered. The increase of carbon price impact on the internal steam management optimization economics was favorable, while a switch to steam export from the ethylene plant, instead of steam import, might be feasible if the carbon price increased to over 100 €/tCO2.

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Section: Contribution Of This Studymentioning

confidence: 62%

Energy and Environmental Assessment of Steam Management Optimization in an Ethylene Plant

Variny

Hanus²,

Blahušiak³

et al. 2021

IJERPH

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“…SRF production potential in Europe is estimated to be over 60 MT per year [32], but its current production is much lower [29], which opens possibilities of its production increase and subsequent conversion to EE and heat, following the principles of a circular economy (CE). Biomass and RDF combustion and co-combustion in TPPs have a range of benefits [33,34], including lower greenhouse gas emissions than those generated in black coal combustion, especially in the cases of CO 2 and SO x .…”

Section: Theoretical Background 21 Biomass and Rdf-to-energy Routes C...mentioning

confidence: 99%

An Opportunity for Coal Thermal Power Plants Facing Phase-Out: Case of the Power Plant Vojany (Slovakia)

Stričík,

Kuhnová,

Variny

et al. 2024

Energies

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The study deals with the possibilities of using alternative types of fuels to produce electricity. Power Plant Vojany (PPV) is a thermal power plant (TPP) in eastern Slovakia, which is part of the company Slovenské elektrárne, a. s. (SE). PPV primarily used black coal to produce electricity, which had to be imported from abroad (the Russian Federation). This activity has become inefficient both economically and environmentally, due to the high price of CO2 permits and the high emission factor of this type of fuel. PPV decided to co-combust biomass and refuse-derived fuel (RDF), which resulted in much better economic conditions due to their price, economic efficiency, and partly closed CO2 cycle. The aim of the paper is to explore the possibilities related to the production of energy in the cleanest possible way and with the least possible damage to the environment in coal thermal power plants using the example of operating Power Plant Vojany located in eastern part of Slovakia and to inspire each other for the modern transformation. For the purposes of hypothesis verification, analytical methods focused on overview studies of average fuel prices, comparisons, and the balance of fuels in connection with eliminated CO2 emissions, as well as municipal waste (MW) management in the EU and V4 countries, were used. The authors also focused on the energy recovery and combustion of MW and tracking the achieved CO2 savings in connection with the development of fuel sources in PPV. The results point to the fact that PPV is one of the power plants that could use biomass and RDF as fuel, which confirms the economic advantages of this procedure. The results confirm that the potential of RDF production in Slovakia is sufficient to ensure the operation of PPV at planned, even higher volumes of electricity production. The transformation to cleaner operation of coal thermal power plants represents a significant contribution of this study.

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“…Steam boiler retrofitting for alternative fuel as well as refitting to oxycombustion are relevant in large units, especially in thermal power plants where the effect of scale plays an important role [59,60]. Cheap fuels of reasonable quality (such as dry biomass or waste fraction) can, however, be used in smaller boilers after a cheap retrofit or boiler replacement [61][62][63]. However, only a retrofit coupled with topping unit installation increases the plant's capacity and improves its flexibility, both being valuable assets making this means of repowering especially interesting for industrial CHPs [64].…”

Section: Repowering Of Thermal Power Plants and Industrialmentioning

confidence: 99%

Repowering Industrial Combined Heat and Power Units: a Contribution to Cleaner Energy Production

Variny¹,

Kšiňanová²

2022

Pol. J. Environ. Stud.

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Repowering of industrial combined heat and power units allows reducing industrial greenhouse gases emissions. An existing industrial unit served as model in the gas turbines-based repowering study, aiming at fuel consumption and carbon dioxide emissions reduction. Following unit's model setup and verification, two conservative repowering options (hot windbox and separate gas turbine + heat recovery steam generator) were assessed from economic, energetic, and environmental point of view, including seasonal impact. Hot windbox option leads to annual power production increase by 14.3% (72.8 GWh/year), accompanied by carbon dioxide emissions reduction by 3.9 % (29.5 ktons/year) compared to the base case. The second option delivered more significant power production increase (+261.9 to +298.6 GWh/year) with CO 2 emissions, either slightly higher (+1.5 %) or modestly lower (-4.0%), than in base case depending on heat recovery efficiency from gas turbine exhaust. Both options show feasible economics with simple payback period as low as four years under favorable combination of fuel and electricity prices and CO 2 costs. External CO 2 emissions change due to the change in unit's power production further reduces the total CO 2 emissions, strongly depending on the applied power production emission factor.

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Energy Treatment of Solid Municipal Waste in Combination with Biomass by Decentralized Method with the Respect to the Negative Effects on the Environment

Cited by 5 publications

References 12 publications

Energy and Environmental Assessment of Steam Management Optimization in an Ethylene Plant

Energy and Environmental Assessment of Steam Management Optimization in an Ethylene Plant

An Opportunity for Coal Thermal Power Plants Facing Phase-Out: Case of the Power Plant Vojany (Slovakia)

Repowering Industrial Combined Heat and Power Units: a Contribution to Cleaner Energy Production

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