Phase-change gas-containing powder material pipeline conveying anti-blocking device and phase-change gas-containing powder material pipeline conveying anti-blocking method

The invention relates to the technical field of pipeline cleaning, in particular to a pipeline conveying anti-blocking device and method for powder materials containing phase change gas, and aims to solve the problems that an existing anti-blocking device is not ideal in elbow cleaning effect and can only be cleaned after part of pipelines are detached in some occasions. The phase change section is connected with the high-temperature section and the low-temperature section, the phase change section is of a bent pipe structure, and an opening rushing to the low-temperature section is formed in the large-diameter side of the phase change section; the ash removal assembly is connected to the opening position of the phase change section in a sealed mode and provided with a scraper capable of doing reciprocating motion, the motion path of the scraper is consistent with the direction of the low-temperature section pipeline, an ash removal opening is reserved in the far-end range of the motion path of the scraper in