Partitioning of elements in a entrained flow IGCC plant: Influence of selected operational conditions

Font, Oriol; Querol, Xavier; Izquierdo, María; Álvarez, Esther; Moreno, Natàlia; Dı́ez, Sergi; Álvarez-Rodríguez, Ramón; Clemente-Jul, Carmen; Coca, P.; García-Peña, F.

doi:10.1016/j.fuel.2010.03.044

Cited by 39 publications

(21 citation statements)

References 28 publications

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“…With the exception of Ca, S and Fe, the concentrations of other elements in fly ash samples are approximate to that in slag samples. When compared with the concentrations of major oxides in EU fly ashes [48], Na concentrations in three fly ashes and two slags are higher than its maximum value in EU fly ashes. Aluminum, Ca, Fe, K, Mg and S concentrations fall within the middle concentration range of EU fly ashes.…”

Section: Geochemical Characteristicsmentioning

confidence: 79%

“…When compared with EU fly ashes [48], the content of crystal minerals in fly ash basically falls in the low EU range, nevertheless glass matrix contents are in the upper range of EU fly ashes. Fly ash has high calcite content, which may be attributed to the high calcite content in feed coal, or because of the calcite formed by adding lime in the flue gas desulfurization device.…”

Section: Mineralogical Characteristicsmentioning

confidence: 93%

“…In order to measure the distribution of elements in flue gas, fly ash and slag during coal burning in Shenhuo and Yihua power plant, Al is considered as a non-volatile element, and aluminum normalization enrichment factor, is used to quantify the enrichment of the major and trace elements in fly ash (EF A ) and slag (EF S ) [37,47,48]. Meanwhile, normalized (fly ash + slag)/feed coal enrichment factors (total enrichment factors, EF T ) is calculated by the following formula: EF T = EF A × A + EF S × B, where A and B are the production proportion of the fly ash and slag (90% and 10% respectively) When the enrichment coefficient EF A or EF S > 1, it indicates that the element is enriched in fly ash or slag.…”

Section: Data Treatmentmentioning

confidence: 99%

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Mineralogical and Environmental Geochemistry of Coal Combustion Products from Shenhuo and Yihua Power Plants in Xinjiang Autonomous Region, Northwest China

Zhuang

et al. 2019

Minerals

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The mineralogical and geochemical characteristics of feed coals and coal combustion products (CCPs) from the Shenhuo and Yihua Power Plants in Xinjiang Autonomous Region, were studied by means of proximate analysis, Power X-ray diffraction (XRD), scanning electron microscopy with Energy Dispersive X-ray analyzer (SEM-EDX), inductively coupled plasma atomic emission spectrometry (ICP-MS) and inductively coupled plasma mass spectrometry (ICP-AES). The environmental geochemistry of CCPs was evaluated by Al-normalized enrichment factor as well as European Standard EN-12457 leaching test. Two feed coals have the characteristics of low sulfur content, medium to high volatiles matter yields, medium moisture content, super low to medium ash yield, medium to high calorific value and low mineral content. The main crystalline facies in fly ash and slag are quartz and mullite, with a small amount of calcite, and some unburned carbon. Hematite, SrSO4 and barite also can be observed in fly ashes by SEM. Typical plerophere occurs in fine fly ash rather than the coarse fly ash. The concentration of most trace elements in CCPs falls within the lower concentration range of European fly ashes. With respect to the partitioning behavior of trace elements during coal combustion, S is highly volatile, and Mg, Na, Zn, B, Co, As, Nb, Zr, Cu and K also show certain volatility, which may to some extent emit to the atmosphere. Furthermore, leaching experiments show that leachable concentrations of most of the potentially toxic elements in CCPs are low, and the CCPs fall in the range between inert and nonhazardous landfill material regulated by the 2003/33/EC Decision.

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Section: Geochemical Characteristicsmentioning

confidence: 79%

Section: Mineralogical Characteristicsmentioning

confidence: 93%

Section: Data Treatmentmentioning

confidence: 99%

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Mineralogical and Environmental Geochemistry of Coal Combustion Products from Shenhuo and Yihua Power Plants in Xinjiang Autonomous Region, Northwest China

Zhuang

et al. 2019

Minerals

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“…6) found in samples collected in the Cala harbour compared to the Termini Imerese harbour. Both features are considered characteristic for atmospheric particulates and sediments contaminated by products derived from oil refineries or fossil fuel combustion (Georgakopoulos et al, 2002;Kulkarni et al, 2006Kulkarni et al, , 2007Moreno et al, 2008;Font et al, 2010). Therefore, a possible source of the trace elements measured in the Termini Imerese harbour samples is the fallout of atmospheric particulates from the nearby industrial sites.…”

Section: Discussionmentioning

confidence: 99%

Rare earths, zirconium and hafnium distribution in coastal areas: The example of Sabella spallanzanii (Gmelin, 1791)

Parisi

Cammarata

et al. 2017

Chemosphere

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“…It is reported that the emission of trace elements is influenced by the thermodynamic properties of elements, the forms of elements in the feed fuel as well as the combustion environment [22][23][24][25][26][27]. Besides the experimental investigation, thermodynamic equilibrium calculation is also widely used to study the trace element behavior during coal combustion [28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Trace Elements in Coal Gangue: A Review

Guo¹

2018

Contributions to Mineralization

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Coal gangue is one of the largest industrial residues. It has high ash content, low carbonaceous content, and heating value. Meanwhile, it has some trace elements. Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land. Now, coal gangue utilization is a matter of great concern and has attracted wide interest. However, some toxic trace elements in coal gangue should be paid more attention during the utilization of coal gangue. In this article, the modes of occurrence and the leaching characters of trace elements in coal gangue were introduced according to the result of the sequential extraction method and the leaching method. The release character of trace elements during combustion of coal gangue and the environmental implication of trace elements in coal gangue were also discussed. The sulfide-bound trace elements are dominant form in coal gangue. Leaching behavior of trace elements from coal gangue is affected by many factors. Different trace elements presented different transformation behaviors. Trace elements in coal gangue could release out and produce environmental implication in various degrees, depending on the type of trace elements.

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Partitioning of elements in a entrained flow IGCC plant: Influence of selected operational conditions

Cited by 39 publications

References 28 publications

Mineralogical and Environmental Geochemistry of Coal Combustion Products from Shenhuo and Yihua Power Plants in Xinjiang Autonomous Region, Northwest China

Mineralogical and Environmental Geochemistry of Coal Combustion Products from Shenhuo and Yihua Power Plants in Xinjiang Autonomous Region, Northwest China

Rare earths, zirconium and hafnium distribution in coastal areas: The example of Sabella spallanzanii (Gmelin, 1791)

Trace Elements in Coal Gangue: A Review

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