Abstract: Due to the advantages in high efficiency of power generation and low emission of dioxin, power generation with domestic waste pyrolysis gas has become a solid energy equipment technology with great popularization value. However, the tail gas particulates that from internal combustion engine power generator for domestic waste pyrolysis gas caused the problems such as automatic shutdown, unstable power generation and substandard emission. The composition characteristics and influencing factors of tail gas particulates were analyzed in this study. The results showed that the white powder was mainly composed of SiO2, which was largely from the tar and siloxane in pyrolysis gas. In order to improve the power generation tail gas, so that it could steadily and continuously meet the emission standards, multistage tar capture device and high-temperature ceramic dust collector were supplemented in the power generation unit. The tar content in the gas was less than 50 mg/m3, and the dust content in the exhaust gas was less than 5 mg/m3, which met the index requirements of the DB 11/1056—2013 Emission Standard of Air Pollutants for Stationary Internal Combustion Engines.

Key words: domestic waste, pyrolytic combustible gas, combustible gas power generator, tail gas particles, improvement and purification