Fluidized Bed Methane Synthesis from Wood Gasification

The patent applies this principle by allowing aromatic hydrocarbons and other impurities from wood gasification to remain in the feed gas, converting them into beneficial products through in-situ catalytic reforming in the fluidized bed reactor. The Ni-based catalyst transforms these harmful impurities into additional methane and other valuable hydrocarbons, eliminating the need for costly purification steps while actually improving overall process efficiency and methane yield.

The patent implements self-service by designing a fluidized bed reactor system where the Ni-based catalyst continuously reformes aromatic hydrocarbons and impurities into methane in-situ. The system automatically manages the conversion of potential deactivating substances into useful products, maintaining catalyst activity without requiring external purification interventions. The fluidized bed configuration ensures continuous catalyst regeneration and prevents coking, allowing the process to be economically viable.

The patent applies dynamics by transitioning from a static fixed-bed catalyst system to a dynamic fluidized bed system. The catalyst particles are suspended and continuously circulated in the fluidized bed, allowing constant contact with the feed gas and products. This dynamic configuration enables continuous catalyst regeneration, prevents localized hot spots and coking, and maintains high catalytic activity over extended periods, thereby significantly improving both productivity and catalyst lifetime.

The patent converts the previously harmful aromatic hydrocarbons into a beneficial resource by using the Ni-based fluidized bed catalyst to reform them in-situ into additional methane and other hydrocarbons. This approach not only prevents catalyst poisoning through continuous reforming but also improves energy efficiency by utilizing the chemical energy contained in the aromatic compounds rather than discarding them through purification steps.