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2007杭州国际动力工程会议(The International Conference on Power Engineering 2007) | 2007

Biomass Gasification in Dual Fluidized Bed Gasifier

Toshiyuki Suda; Takahiro Murakami; Satoko Aoki; Yoshiaki Matsuzawa; Guangwen Xu; Hidehisa Tani

The dual fluidized bed gasification technology is prospective because it produces high caloric product gas free of N2 dilution even when air is used to generate the required endothermic heat via in situ combustion. This study is devoted to providing the fundamentals for development of a bubbling fluidized bed (BFB) gasifier for biomass fuels coupled to a pneumatic transported riser (PTR) char combustor. Gasification test of 1.0 g dried coffee grounds containing 10.5 wt.% water using steam-blown fluidized bed clarified first the characteristics of fuel pyrolysis and steam gasification at 1073 K. With this clarification as the known input, a process simulation using the software package ASPEN then revealed that the dual bed gasification plant is able to sustain its independent heat and mass balances to allow cold gas efficiencies higher than 75%. The experiment using 5.0 kg/h dual fluidized bed pilot gasification facility was held according to the operation condition obtained from the simulation. Stable operation can be achieved and syngas with higher heating value can be produced. It was revealed that the necessary reaction time for the fuel can be lower than 160 s. Also it was found that impregnation of Ca catalysis will further increases the carbon conversion of the fuel compared with the gasification by simple mixing of fuel and catalysis.


Fuel | 2007

Some process fundamentals of biomass gasification in dual fluidized bed

Takahiro Murakami; Guangwen Xu; Toshiyuki Suda; Yoshiaki Matsuzawa; Hidehisa Tani; Toshiro Fujimori


Industrial & Engineering Chemistry Research | 2006

The Superior Technical Choice for Dual Fluidized Bed Gasification

Guangwen Xu; Takahiro Murakami; Toshiyuki Suda; Yoshiaki Matsuzawa; Hidehisa Tani


Fuel Processing Technology | 2009

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

Guangwen Xu; Takahiro Murakami; Toshiyuki Suda; Yoshiaki Matsuzaw; Hidehisa Tani


Energy & Fuels | 2006

Gasification of coffee grounds in dual fluidized bed : Performance evaluation and parametric investigation

Guangwen Xu; Takahiro Murakami; Toshiyuki Suda; Yoshiaki Matsuzawa; Hidehisa Tani


Particuology | 2008

Efficient gasification of wet biomass residue to produce middle caloric gas

Guangwen Xu; Takahiro Murakami; Toshiyuki Suda; Hidehisa Tani; Yutaka Mito


Archive | 2007

Method for gasification in fluidized bed

Toshiro Fujimori; Hidehisa Tani; Toshiyuki Suda; Yoshiaki Matsuzawa; Kenichiro Kondo


Aiche Journal | 2006

Particle circulation rate in high-temperature CFB: Measurement and temperature influence

Guangwen Xu; Takahiro Murakami; Toshiyuki Suda; Yoshiaki Matsuzawa; Hidehisa Tani


Archive | 2008

Fuel gasification equipment

Takahiro Murakami; Satoko Aoki; Toshiyuki Suda; Hidehisa Tani


Archive | 2007

FLUIDIZED BED GASIFICATION METHOD

Toshiro Fujimori; Hidehisa Tani; Toshiyuki Suda; Yoshiaki Matsuzawa; Kenichiro Kondo

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Takahiro Murakami

Toyohashi University of Technology

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Guangwen Xu

Chinese Academy of Sciences

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Toshiro Fujimori

Electric Power Development Company

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Masami Ashizawa

Central Research Institute of Electric Power Industry

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