Abstract
Efficient hydrogen production from renewable wood is an important way to solve environmental pollution and optimize energy structure. However, the poor heat efficiency and high emission level of direct combustion limited wood industrial applications. In order to enhance the heat efficiency and hydrogen production of waste wood, a device combining inert porous pellets and reactive wood lamellae was proposed. The effects of additives and porous structure parameters on wood combustion characteristics were investigated under different operating conditions. The results demonstrated that the addition of adhesive improved the combustion temperature and hydrogen production time, and the hydrogen production time increased by 3.6 times after adding two layers of resin. With the increasing of water content, the hydrogen yield increased first and then decreased. Moreover, alkali metals in solution promoted syngas production, which had the lower heating value of up to 3.4 MJ/Nm3. Furthermore, the preheating temperature and inlet air velocity significantly increased the combustion temperature and rate, and achieved efficient combustion at the preheating temperature of 623 K and the air velocity of 4 cm/s. The results provided theoretical guidance for the efficient wood utilization and green hydrogen production.
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