Fixed bed gasifiers are frequently used for biomass gasification as they have a relatively high efficiency for the conversion biomass to syngas, on a small scale. The distribution of solid particles inside a fixed bed gasifier is usually heterogeneous. This distribution is unknown as the currently used reactions cause the particles to continuously change states. A novel gasifier has been designed to investigate the distribution of these particles inside the gasifier. An opening system at the bottom of the gasifier was equipped to collect particles, without affecting the shapes and positions of the particles remaining inside the gasifier after quenching, at any given point of operation. Because only the bottom of the reactor is opened, the distribution of particles inside the gasifier can be known without the need for transportation, tilting, or splitting of the reactor itself. The gasification performance of this novel gasification system was investigated by varying the distribution of different particles inside the gasifier. Different phenomena, such as product gas distribution were observed during the operation of the gasifier. These phenomena were confirmed by direct observation, using the novel collection/visualization system for solid particles inside the gasifier.

固定床气化器通常用于生物质气化，因为它们在小规模上具有将生物质转化为合成气的相对较高的效率。固定床气化炉内固体颗粒的分布通常是不均匀的。这种分布是未知的，因为当前使用的反应会导致粒子连续改变状态。设计了一种新型气化炉，以研究这些颗粒在气化炉内的分布。在任何给定的操作点，气化炉底部的开口系统都可以收集颗粒，而不会影响淬火后残留在气化炉内部的颗粒的形状和位置。由于仅打开反应器底部，因此无需运输，倾斜，或反应堆本身分裂。通过改变气化炉内不同颗粒的分布，研究了这种新型气化系统的气化性能。在气化炉的运行过程中观察到不同的现象，例如产物气体的分布。通过使用新颖的气化炉内部固体颗粒收集/可视化系统，通过直接观察证实了这些现象。