Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, PR China.
Paris Elite Institute of Technology, Shanghai Jiao Tong University, Shanghai 200030, PR China.
Bioresour Technol. 2022 Jul;356:127334. doi: 10.1016/j.biortech.2022.127334. Epub 2022 May 16.
The morphological evolution and heat transfer characteristics of biomass briquette greatly affect the directional regulation of target products during steam gasification process. In this work, a visual gasifier with an on-line temperature monitoring system was developed to investigate the coupling relationship between the morphological change and temperature distribution of biomass briquette. The gasification behaviors of biomass briquette at different temperatures and steam concentrations were comprehensively examined and compared. The shrinkage rate and heating rate of biomass briquette both reached the maximum at 1-2 min. The morphological evolution of biomass briquette in the heating process was shrinking particle mode, then changed to the shrinking core mode when the biomass temperature kept relatively stable. The high-quality syngas with a high H/CO ratio of 3.07 at 50 vol% steam concentration and 700 °C was obtained, which were idealized to synthesize other fuels/chemicals.
生物质型煤的形态演变和传热特性对蒸汽气化过程中目标产物的定向调控有很大影响。在这项工作中，开发了一种带有在线温度监测系统的可视化气化炉，以研究生物质型煤形态变化与温度分布之间的耦合关系。综合考察和比较了不同温度和蒸汽浓度下生物质型煤的气化行为。生物质型煤的收缩率和加热速率在 1-2 分钟时均达到最大值。生物质型煤在加热过程中的形态演变是收缩颗粒模式，然后当生物质温度保持相对稳定时，转变为收缩核模式。在 50%体积蒸汽浓度和 700°C 的条件下，获得了具有 3.07 高 H/CO 比的高质量合成气，可将其理想化来合成其他燃料/化学品。
