Study on the Formation Mechanism of the Pyrolysis Products of Lignite at Different Temperatures Based on ReaxFF-MD
Xin He, Hongqing Zhu, Yujia Huo, Wei Wang
Abstract
> 2100 K, the secondary pyrolysis reactions were significant. Tar free radicals and char undergo decomposition, hydrogenation, and polymerization reaction, gas products and tar free radicals increase, and the char yield decreases compared with the primary pyrolysis stage, so 2100 K is the key temperature of the pyrolysis reaction. The research is of great importance in improving the accurate control of coal spontaneous combustion.
Topics & Concepts
PyrolysisReaxFFCoalCombustionThermogravimetric analysisChemistryDecompositionYield (engineering)Chemical engineeringThermal decompositionMaterials scienceThermodynamicsOrganic chemistryComposite materialMoleculeEngineeringHydrogen bondPhysicsThermochemical Biomass Conversion ProcessesCoal Properties and UtilizationCoal Combustion and Slurry Processing