TY - JOUR AU - Zhao, Rongkui AU - He, F. AU - Behrendt, F. AU - Cai, J. AU - Dieguez-Alonso, A. AU - Liu, Y. PY - 2021/11/10 Y2 - 2024/03/29 TI - Oxidation Characteristics of Water Soluble Fractions of Agro-Stalks with Focus on Function of Reactive Inorganics JF - Eurasian Chemico-Technological Journal JA - Eurasian Chem.-Technol. J. VL - 23 IS - 3 SE - Articles DO - 10.18321/ectj1101 UR - https://ect-journal.kz/index.php/ectj/article/view/1101 SP - 181-189 AB - <p>In order to deepen the understanding of the thermochemical behavior of reactive inorganics, which play an important role in slagging and fouling during combustion of agro-stalks, the oxidation behavior of the water-soluble fraction of corn stover, wheat straw and rice straw was examined using a simultaneous thermogravimetric analyzer. The oxidation characteristics were discussed in combination with elemental analysis of water-soluble fractions. Results showed that reactive inorganics elements account for 30–40% in water-soluble fractions of the three agro-stalks and carbon was oxidized at two separate stages. Four stages were found during oxidation of water-soluble fractions – (1) devolatilisation of organics (100‒400 °C); (2) oxidation of char (400–650 °C); (3) oxidation of char with melting of salts or decomposition of carbonate (650–800 °C); (4) vaporization of KCl (800–1000 °C). This work provides a base study for an optimized design of combustion for agro-stalks and pharmaceutical waste.</p><p>&nbsp;</p> ER -