Impact of solid waste treatment from spray dryer absorber on the levelized cost of energy of a coal-fired power plant

Cruz, Matheus de Andrade; Araújo, Ofélia de Queiroz Fernandes; Medeiros, José Luiz de; Castro, Rui de Paula Vieira de; Ribeiro, Gabriel Travagini; Oliveira, Vanessa Reich de

doi:10.1016/j.jclepro.2017.07.061

Cited by 14 publications

(6 citation statements)

References 12 publications

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“…Findings showed that without expecting any profit (NPV = 0), the sale price of electricity for the GT option was US$0.1077 per kWh. An LCOE range of US$0.092–0.095 per kWh was reported for a coal power plant, which indicates that the economic performance of a biofueled MGT is slightly higher than that of a conventional thermal power plant. The difference in the values of LCOE would be even higher if profit were considered (NPV > 0).…”

Section: Biofuel Utilization In Gt Cyclesmentioning

confidence: 99%

Advances in Biofueling of Micro Gas Turbines for Power Generation

Okoroigwe

Madhlopa

2019

Energy Tech

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The micro gas turbine (MGT) technology is gaining momentum in distributed energy solutions. Nevertheless, this technology is predominantly fueled by fossil energy resources at present. The use of biofuels to propel micro gas turbines (MGTs) for power generation is one of the most promising ways to reduce greenhouse gas emission resulting from fossil fuel consumption in power plants and to enhance energy security. Herein, various approaches to integrate biofuels into the MGT system for power generation are reviewed. It is found that biogas‐driven MGTs are in the most advanced stage of technological maturity. From an economic perspective, previous works show that combustion of biogas is most viable in a combined heat and power system compared to only power or heat generation. Nevertheless, the deployment of MGTs for commercial generation of power is scarce, which indicates that this sector is encountering some challenges. One of the major concerns about the exploitation of biofuels in gas turbines relates to fuel properties and combustion characteristics. Other challenges are also presented and discussed, and further research on the commercial production and combustion of biofuels in MGT engines is recommended.

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Section: Biofuel Utilization In Gt Cyclesmentioning

confidence: 99%

Advances in Biofueling of Micro Gas Turbines for Power Generation

Okoroigwe

Madhlopa

2019

Energy Tech

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“…The main goal is support decision-making on process configurations to monetize mixed coal combustion products from a 360 MW pulverized coal power plant with semi-dry FGD. A gate-to-gate life cycle assessment is performed, considering three scenarios: BASE -standard power plant [33], CASE I -base plant adopting dry thermal oxidation treatment of spray dryer solids, CASE IIbypass of desulfurization system. Cases I and II allow commercialization of the solid residue as class C fly-ash.…”

Section: Goal and Scopementioning

confidence: 99%

“…The power plant is supplied with Colombian Coal, with composition assumed as similar to Colombian field IGM 1238 [34]. The considered set of reactions expected to occur inside the FBR and the SDA solid residue composition and mass flow is presented by Cruz et al [33]. The last was obtained from the heat and mass balances of the power plant used as case study and considers coal with 1.5%w/w of sulfur.…”

Section: Heat and Mass Balances And Streams Inventorymentioning

confidence: 99%

Environmental Performance of a Solid Waste Monetization Process Applied to a Coal-Fired Power Plant with Semi-Dry Flue Gas Desulfurization

Cruz¹,

Castro²,

Araújo³

et al. 2019

J. sustain. dev. energy water environ. syst.

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Mixing of semi-dry flue gas desulfurization solids and fly-ash from coal-fired power plants results in a solid waste contaminated by calcium sulfite. Therefore, it becomes useless for industry and is often landfilled. To support decision-making on process configurations to monetize this solid residue a gate-to-gate life cycle assessment was performed, considering three scenarios: BASE case -standard 360 MW power plant, CASE I -base plant adopting dry thermal oxidation treatment of spray dryer solids, CASE IIbypass of desulfurization system. Cases I and II allow commercialization of the solid residue as class C fly-ash. Evaluated alternatives were compared based on quantitative potential environmental impacts, using United States Environmental Protection Agency waste reduction algorithm. Based on the results, the BASE case was more aggressive to the environment, due to solid waste production. CASE II increased photochemical oxidation and acidification potentials. CASE I was the more environmentally friendly but demands additional capital and operational expenditure.

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“…Nesse sistema é utilizado carvão de baixo teor de enxofre, em virtude de um limite de até 95% de eficiência de remoção de SO 2 . [10] A tecnologia semisseca é interessante em regiões onde o abastecimento de água é limitado (por exemplo, o Nordeste do Brasil e Oeste dos Estados Unidos), porque consome de 30 a 40% menos água do que o processo FGD tipo úmido. Em termos de despesas de capital, o custo de um processo FGD semisseco é cerca de 60% menor do que a tecnologia úmida [10].…”

Section: Introductionunclassified

“…[10] A tecnologia semisseca é interessante em regiões onde o abastecimento de água é limitado (por exemplo, o Nordeste do Brasil e Oeste dos Estados Unidos), porque consome de 30 a 40% menos água do que o processo FGD tipo úmido. Em termos de despesas de capital, o custo de um processo FGD semisseco é cerca de 60% menor do que a tecnologia úmida [10]. Dentro do reator do processo semisseco, a água evapora, aumentando a umidade do ambiente e reduzindo a temperatura do gás de combustão garantindo a dispersão do hidróxido de cálcio em partículas finas, uma vez que as gotículas são secas.…”

Section: Introductionunclassified

Potencialidades Do Resíduo Do Sistema FGD Utilizado Na Dessulfuração De Gases De Uma Coqueria

Mohaupt¹,

Sagrillo²,

Reis³

2019

ABM Proceedings

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Resumo Para atender às normas ambientais que limitam as emissões de SO 2 na atmosfera, usinas termelétricas e siderúrgicas utilizam lama de cal para aprisionar os gases de efeito estufa por meio do processo Flue Gas Desulfurization (FGD) gerando o resíduo denominado gesso FGD. Inicialmente, o gesso FGD foi caracterizado por meio de ensaios de difração de raios X, espectrometria de fluorescência de raios X, índice de plasticidade, teor de umidade e granulometria a laser. Foi verificado que o gesso FGD é constituído principalmente de enxofre e cálcio, de composição química similar ao gesso natural, podendo ser estudados meios para aplicações destinadas ao mesmo, em especial, na construção civil tal como o tijolo solo-cimento. Com isso, a pesquisa teve como objetivo caracterizar o gesso FGD para utilização em tijolo solo-cimento. Palavras-chave: Gesso FGD; Carvão mineral; Dessulfuração; Tijolo solo-cimento. POTENTIALITIES OF RESIDUE OF THE FGD SYSTEM USED IN DESULFURATION GASES FROM A COQUERIA Abstract To meet environmental standards limiting SO 2 emissions into the atmosphere, thermoelectric and steel mills use lime sludge to trap greenhouse gases through the Flue Gas Desulfurization (FGD) process. Initially, FGD gypsum was characterized by X-ray diffraction, X-ray fluorescence spectrometry, plasticity index, moisture content and laser grain size. It was verified that the FGD gypsum consists mainly of sulfur and calcium, with a chemical composition similar to natural gypsum, and it is possible to study means for the application of gypsum, especially in civil construction, such as soil-cement brick. With this, the research had as objective to characterize the FGD gypsum.

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Impact of solid waste treatment from spray dryer absorber on the levelized cost of energy of a coal-fired power plant

Cited by 14 publications

References 12 publications

Advances in Biofueling of Micro Gas Turbines for Power Generation

Advances in Biofueling of Micro Gas Turbines for Power Generation

Environmental Performance of a Solid Waste Monetization Process Applied to a Coal-Fired Power Plant with Semi-Dry Flue Gas Desulfurization

Potencialidades Do Resíduo Do Sistema FGD Utilizado Na Dessulfuração De Gases De Uma Coqueria

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