The dual fluidized bed gasification technology is an advanced method for efficiently converting biomass into synthesis gas. This process uses two interconnected fluidized beds to continuously carry out thermal decomposition and gasification of biomass. Specifically, biomass is first pyrolyzed in the primary fluidized bed, and the resulting char is then gasified in the secondary bed to produce high-quality synthesis gas.

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The advantages of this technology include:

1. High Gasification Efficiency:
   The fluidized bed system improves the gasification efficiency of biomass, resulting in a higher yield of synthesis gas.

2. Applicability to Various Biomass Types:
   The system can process a wide range of biomass feedstocks, including woody biomass, thereby increasing fuel flexibility.

3. Reduced Tar Formation:
   By optimizing catalysts and operating conditions, tar production is minimized, reducing the burden on downstream gas cleaning processes.

With these characteristics, the dual fluidized bed gasification technology is regarded as a promising approach that combines efficiency and economic feasibility in the production of synthesis gas from biomass.

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At the Wajima Biomass Plant, this technology has been applied and extensively tested through numerous experiments conducted in Japan. As a result, the designed hydrogen content in the synthesis gas was achieved while maintaining a methane concentration—a key indicator of tar content—that is more than 20% lower than leading European benchmarks. Additionally, a 20% reduction in wood chip consumption was accomplished.

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