Two-stage dual fluidized bed gasification: Its conception and application to biomass

Xu, Guangwen; Murakami, Takahiro; Suda, Takafumi; Matsuzaw, Yoshiaki; Tani, Hidehisa

doi:10.1016/j.fuproc.2008.08.007

Cited by 91 publications

(38 citation statements)

References 8 publications

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“…It offers one of the most versatile and cleanest ways to convert coal into electricity, energy, hydrogen, and other chemical products [2,3]. Coal gasification is generally carried out in one of three types of reactors classified according to solid feedstock movement: fixed-bed [4,5], fluidized-bed [6,7], and entrained-flow bed reactors [8][9][10]. Among the three gasification technologies, the fluidized bed permits higher fuel flexibility with the possibility to gasify coal [11], biomass [12,13], and other municipal solid waste [14,15] at high ash fusion temperature (AFT, flow temperature (FT) of >1400°C).…”

Section: Introductionmentioning

confidence: 99%

Understanding mineral behaviors during anthracite fluidized-bed gasification based on slag characteristics

Huang

et al. 2014

Applied Energy

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Section: Introductionmentioning

confidence: 99%

Understanding mineral behaviors during anthracite fluidized-bed gasification based on slag characteristics

Huang

et al. 2014

Applied Energy

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“…The DFB technology has recently shown great potential for in situ catalytic tar cracking and carbon dioxide elimination in biomass gasification [44,45]. Catalysts such as nickel, calcium oxide, and dolomite have been frequently reported in the literature.…”

Section: Dual Fluidized Bed (Dfb)mentioning

confidence: 99%

Reactor Design and its Impact on Performance and Products

Makkawi

2014

Transformation of Biomass

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“…One example is the two-stage DFBG, proposed by Xu and his colleagues in 2008 [21]. This design uses the principle of two fluidised beds without external upper pressure lock.…”

Section: Introductionmentioning

confidence: 99%

Internal tar/CH4 reforming in a biomass dual fluidised bed gasifier

Göransson

Söderlind

Henschel

et al. 2014

Biomass Conv. Bioref.

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An internal reformer is developed for in situ catalytic reforming of tar and methane (CH 4 ) in allothermal gasifiers. The study has been performed in the 150 kW dual fluidised bed (DFB) biomass gasifier at Mid Sweden University (MIUN). The MIUN gasifier is built for research on synthetic fuel production. Reduction of tars and CH 4 (except for methanation application) in the syngas is a major challenge for commercialization of biomass fluidised-bed gasification technology towards automotive fuel production. The MIUN gasifier has a unique design with an internal reformer, where intensive contact of gas and catalytic solids improves the reforming reactions. This paper presents an initial study on the internal reformer operated with and without Ni-catalytic pellets, by evaluation of the syngas composition and tar/CH 4 content. A novel application of Ni-catalyst in DFB gasifiers is proposed and studied in this work. It can be concluded that the reformer with Ni-catalytic pellets clearly gives a higher H 2 content together with lower CH 4 and tar contents in the syngas than the reformer without Ni-catalytic pellets. The gravimetric tar content decreases down to 5 g/m 3 and the CH 4 content down below 6 % in the syngas. The tar content can be decreased further to lower levels, with increased gas contact to the specific surface area of the catalyst and increased catalyst surface-to-volume ratio. The new design in the MIUN gasifier increases the gasification efficiency, suppresses the tar generation and upgrades the syngas quality.

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Two-stage dual fluidized bed gasification: Its conception and application to biomass

Cited by 91 publications

References 8 publications

Understanding mineral behaviors during anthracite fluidized-bed gasification based on slag characteristics

Understanding mineral behaviors during anthracite fluidized-bed gasification based on slag characteristics

Reactor Design and its Impact on Performance and Products

Internal tar/CH4 reforming in a biomass dual fluidised bed gasifier

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