Release of inorganic trace elements during gasification of wood, straw, and miscanthus

Porbatzki, Dirk; Stemmler, Michael; Müller, Michael

doi:10.1016/j.biombioe.2011.04.001

Cited by 81 publications

(75 citation statements)

References 15 publications

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“…All of these are advantages of biomass energy (Pu et al 2006). Biomass gasification technology is one of the major biomass energy conversion technologies (Porbatzki et al 2011). It has broad application prospects because of its high conversion efficiency, simple usage, inexpensiveness, and the fact that it is free from the restrictions of fuel regionalism (Xu et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Co-Gasification of Low-Quality Lean Coal and Biomass

Zhu

Zhou

et al. 2015

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The co-gasification behaviors of composite samples of biomass and lean coal were investigated under a CO2 atmosphere. The composite behaviors were determined based on thermogravimetric analysis and the CoatsRedfern method. These methods were used to analyze the kinetics of the processes. The results showed that the temperature ranges of the lean coal, biomasses, and the gasification ability of each biomass were different, and the coordination effects of each biomass varied. The addition of alkali metals had little influence on the pyrolysis efficiency and the peak temperature of composite samples of soybean stalk and lean coal, but it did promote gasification. In the processes of pyrolysis and gasification, composite samples of soybean stalk and lean coal exhibited lower activation energies than unmixed samples, but there was no significant enhancement with the extra alkali metal.

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Section: Introductionmentioning

confidence: 99%

Kinetics of Co-Gasification of Low-Quality Lean Coal and Biomass

Zhu

Zhou

et al. 2015

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“…Therefore, some of the metal catalyst atoms are likely to be released or aggregated during heating to the gasification temperature (Davidsson, et al, 2002Nowakowski, et al, 2007, Porbatzki, et al, 2011. Hopefully the loaded metal particle size should be analyzed by XRD patterns using the metal-loaded chars at the beginning of the CO 2 gasification reaction.…”

Section: Resultsmentioning

confidence: 99%

Effect of metal content on CO<sub>2</sub> gasification behavior of K- and Fe-loaded bio-chars

Hanaoka

Okumura

2014

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The effects of Fe and K contents of Fe-and K-loaded chars containing 0 23% Fe and 0-20% K, respectively, with negligible amounts of poisoning elements, on the CO 2 gasification behavior (C + CO 2 → 2CO) were investigated in the temperature range of 750-1050°C. For 23% Fe-loaded char at gasification temperatures of 900 and 1000 °C, the CO 2 gasification rate constants (K p ) were respectively 3.3 times and ~ 8 times higher than those of the char without Fe. At 900 °C, the K p value increased with an increase in the Fe content up to 10% and remained almost constant above 10% Fe. For K-loaded chars, the K p value of the char loaded with 10% K had a maximum value of 5.4 min −1 at 900 °C; this value was ~ 300 times that of the char without K loading and ~ 90 times higher than the corresponding K p values of Fe-loaded chars at 900 °C. The addition of excess K (upon loading greater than 10%) to bio-char decreased the K p because of the decrease in the number of active sites on the char surface.

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“…As supported by the chemical thermodynamic equilibrium analysis, the data showed that KCl (g) and NaCl (g) were generated from the two materials. However, HCl(g) was generated from rice straw only at low temperatures, while it was generated from corn straw at all gasification temperatures (Porbatzki et al 2011) because chlorine levels are lower in rice straw than in corn straw. , and Na + released from rice straw from corn straw…”

Section: The Migration Of Alkali Metals During Gasificationmentioning

confidence: 97%

A Study on the Migration Behavior of K, Na, and Cl during Biomass Gasification

Yang¹,

Jia²,

Xing³

et al. 2016

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The migration behavior of the alkali metals and chlorine were studied during rice straw and corn straw gasification in a fixed bed reactor at various temperatures using thermodynamic equilibrium calculations, X-ray diffraction (XRD), and scanning electron microscopy/energy dispersive spectrometry (SEM-EDS). The results showed that K and Na were released mostly in chloride form. The release of potassium, sodium, and chlorine increased upon the increase in temperature from 600 to 1000 °C. The maximum amounts of potassium, sodium, and chlorine that were released from rice straw were 38.9%, 18.7%, and 34.9%, respectively. The maximum amounts of potassium and chlorine that were released from corn straw were 24% and 43.6%, respectively, which occurred at 1000 °C. The maximum amount of sodium released from corn straw was 77.6%, at 700 °C, and the amount of sodium released was greater than that of potassium. Most of the potassium and sodium was converted into insoluble carbonate, sulfate, silicate, and aluminosilicate compounds in the gasification ash.

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Release of inorganic trace elements during gasification of wood, straw, and miscanthus

Cited by 81 publications

References 15 publications

Kinetics of Co-Gasification of Low-Quality Lean Coal and Biomass

Kinetics of Co-Gasification of Low-Quality Lean Coal and Biomass

Effect of metal content on CO<sub>2</sub> gasification behavior of K- and Fe-loaded bio-chars

A Study on the Migration Behavior of K, Na, and Cl during Biomass Gasification

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