Laboratory investigations on chemical hot gas cleaning of inorganic trace elements for the “UNIQUE” process

Stemmler, Michael; Tamburro, Angela; Müller, Michael

doi:10.1016/j.fuel.2011.05.027

Cited by 37 publications

(49 citation statements)

References 34 publications

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“…42 Ca-based sorbents have a high affinity for H 2 S at elevated temperatures. The sulphidation of calcined and non-calcined CaCO 3 was examined extensively by Hu et al 74,75 Elseviers et al 76 carried out extensive experimental work in real life settings for H 2 S removal, and with simulated coal gas. [76][77][78] They concluded that fuel gas composition does not influence the desulphurization performance of the sorbents.…”

Section: Emerging Approachesmentioning

confidence: 99%

An overview of advances in biomass gasification

Sikarwar

Zhao

Clough

et al. 2016

Energy Environ. Sci.

967

406

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Biomass gasification is a widely used thermochemical process for obtaining products with more value and potential applications than the raw material itself. Cutting-edge, innovative and economical gasification techniques with high efficiencies are a prerequisite for the development of this technology. This paper delivers an assessment on the fundamentals such as feedstock types, the impact of different operating parameters, tar formation and cracking, and modelling approaches for biomass gasification. Furthermore, the authors comparatively discuss various conventional mechanisms for gasification as well as recent advances in biomass gasification. Unique gasifiers along with multi-generation strategies are discussed as a means to promote this technology into alternative applications, which require higher flexibility and greater efficiency. A strategy to improve the feasibility and sustainability of biomass gasification is via technological advancement and the minimization of socio-environmental effects. This paper sheds light on diverse areas of biomass gasification as a potentially sustainable and environmentally friendly technology

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Section: Emerging Approachesmentioning

confidence: 99%

An overview of advances in biomass gasification

Sikarwar

Zhao

Clough

et al. 2016

Energy Environ. Sci.

967

406

View full text Add to dashboard Cite

show abstract

“…At a temperature of 850 • C the gas consists under equilibrium of 36 vol.% H 2 , 25 vol.% CO, 17 vol.% H 2 O (g), 11 vol.% CO 2 , and 11% Ar (replacing all inert gases and hydrocarbons). 17 An exposure to analyse the influence of 120 ppm H 2 S or 1630 ppm HCl in atmosphere was added.…”

Section: Methodsmentioning

confidence: 99%

Corrosion of silicon carbide hot gas filter candles in gasification environment

Schaafhausen¹,

Yazhenskikh²,

Heidenreich³

et al. 2014

Journal of the European Ceramic Society

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“…BaO-based sorbents that consisted of a mixed solution of 10% BaO and 90% CaO (i.e., CaBa sorbent) have been developed to achieve desulfurization of below 1 ppmv H2S in a fixed-bed gasifier application (Stemmler et al, 2013). Husmann et al (2014) explored the performance of the BaO-based sorbent in a bubbling fluidized bed gasifier and found that the CaBa sorbent achieved an in situ desulfurization down to 35 ppmv H2S with full conversion of BaO to BaS.…”

Section: Hydrogen Sulfidementioning

confidence: 99%

Towards practical application of gasification: a critical review from syngas and biochar perspectives

You

Tsang

et al. 2018

Critical Reviews in Environmental Science and Technology

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Syngas and biochar production are mainly influenced by temperature, feedstock properties, gasifying agent, pressure, and the mass ratio between gasifying agent and feedstock with temperature being the most significant factor. Increasing temperature generally promotes syngas production while suppressing biochar production. The selection of gasifiers (fixed bed, fluidized bed, and entrained flow) is highly dependent on scale requirement (e.g., volume of feedstock and energy demand), feedstock characteristics (e.g., moisture and ash content), and the quality of syngas and biochar. Updraft fixed bed gasifiers are suitable for the feedstocks with a moisture content up to 50 wt.%. High ash feedstocks such as Indian coal, dried sewage sludge, and municipal solid waste that are not suitable for fixed bed gasifiers, have been successfully gasified in bubbling fluidized bed reactors. Woody biomass is not suitable for entrained flow gasifiers unless specialized feeding methods are employed such as wood torrefaction and grinding followed by the existing feeding methods for pulverized coals, biomass-oil biochar slurry preparation followed by pumping, wood or torrefied wood slurry preparation followed by pumping, etc. Syngas and biochar can potentially be contaminated by NH3, H2S, and tar, which can be removed using catalysts (e.g., Ni-based), metal oxides-based sorbents, and thermal and catalytic cracking methods. Existing syngas and biochar upgrading methods suffered from various problems such as economic infeasibility, limited productivity, and fouling, and future syngas and biochar upgrading methods should be aimed to have the features of reliability, security, affordability, and sustainability, towards the practical, largescale production of syngas-and biochar-based products. One potential solution is to develop integrated systems by combining biochar upgrading and application with syngas upgrading, which warrants an integrated perspective based on both life cycle assessment and economic analysis.

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Laboratory investigations on chemical hot gas cleaning of inorganic trace elements for the “UNIQUE” process

Cited by 37 publications

References 34 publications

An overview of advances in biomass gasification

An overview of advances in biomass gasification

Corrosion of silicon carbide hot gas filter candles in gasification environment

Towards practical application of gasification: a critical review from syngas and biochar perspectives

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