Pyrolysis Behavior and Kinetics of Typical Crop Straw in Henan Province at Different Heating Rates

Straw, which is characterized by its low cost, large quantity, and rich supply of biomass energy, often converted into energy that can be utilized in industrial production through pyrolysis technology. This paper examines the experiments four kinds straw (rice, wheat, peanut, corn) from Henan Province China, conducted an air environment with varying temperature-rise rates. Based on experimental results, analysis was effect rate temperature rise degree characteristics each type straw. The activation energies reactions were calculated utilizing Kissinger–Akahira–Sunose (KAS), Flynn–Wall–Ozawa (FWO), Starink methods. It concluded process all types could roughly classified three stages: dehydration drying stage, volatile release carbonization stage. Among evaluated, rice exhibited most favorable combustion performance, while wheat demonstrated best effect. Increasing heating resulted a pronounced thermal hysteresis during straw’s pyrolysis, as evidenced TG DTG curves shifting toward higher temperatures. reaction speed increased increased, amount residual carbon displayed upward trend.