一套完整的生物质气发电系统，通常由以下三大核心模块组成：

A complete biomass gas power generation system typically consists of the following three core modules:

气化炉：系统的“心脏”。它负责将生物质能由固态转化为气态。根据气流和燃料流动的方向，气化炉主要分为下吸式、上吸式、横吸式和流化床等类型。其中，下吸式固定床气化炉因产生的燃气焦油含量较低，在中小规模发电中应用最为广泛。

Gasification furnace: the "heart" of the system. It is responsible for converting biomass energy from solid to gaseous state. According to the direction of airflow and fuel flow, gasifiers are mainly divided into types such as down suction, up suction, cross suction, and fluidized bed. Among them, the down suction fixed bed gasifier is widely used in small and medium-sized power generation due to its low tar content in the gas produced.

燃气净化系统：系统的“肾脏”。由于生物质气化产生的原始燃气中含有未完全裂解的焦油和灰尘，若不处理会严重损害发动机。净化系统通过多级冷却和过滤，将燃气温度降至40℃以下，并严格控制焦油和灰尘的含量，确保内燃机能够长期可靠地工作。

Gas purification system: the "kidney" of the system. Due to the presence of incompletely cracked tar and dust in the raw gas produced by biomass gasification, it can seriously damage the engine if not treated. The purification system reduces the gas temperature to below 40 ℃ through multi-stage cooling and filtration, and strictly controls the content of tar and dust to ensure the long-term reliable operation of the internal combustion engine.

内燃发电机：系统的“肌肉”。通常采用专门针对生物质燃气特性（如低热值、燃烧速度慢）进行改造的内燃机。它采用较低的压缩比和专用的混合器结构，将燃气的化学能转化为机械能，最终输出高品质电能。

Internal combustion generator: the 'muscle' of the system. Typically, internal combustion engines are modified specifically for the characteristics of biomass gas, such as low calorific value and slow combustion rate. It adopts a lower compression ratio and a dedicated mixer structure to convert the chemical energy of gas into mechanical energy, ultimately outputting high-quality electrical energy.