Study on Pyrolysis and Environmental Protection of Corn Stalk in Thermal Expansion Cracking Agent

The thermal expansion cracking agent is a new type of cracking stone, which is made of straw, coal gangue, carbon black, calcium peroxide and so on. After mixing, it is made by crushing, kneading, granulation and drying. Among them, the environmental protection of straw in the application of thermal expansion cracking agent cannot be ignored. This article discusses the pyrolysis process of straw in the thermal expansion rip cracking agent and the migration and transformation mechanism of pollutant elemental sulfur. The results show that Al₂O₃ can be used as the main component of coal gangue in the combustion process of thermal expansion cracking agent. Al₂O₃ can prevent sulfur in the straw from decomposition and discharge into the air with high-temperature combustion of thermal expansion cracking agent, thus ensuring the use of thermal expansion cracking agent is environmentally friendly.