Gas-Particle Flows in a Two-Stage Integrated Bubbling-Transport Fluidized Bed for CO2 Capture,Industrial & Engineering Chemistry Research

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Gas-Particle Flows in a Two-Stage Integrated Bubbling-Transport Fluidized Bed for CO2 Capture
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-06-15 , DOI: 10.1021/acs.iecr.2c00523
Xuebing Bao ₁ , Jiliang Ma ₁ , Ying Wu ₂ , Xiaoping Chen ₁ , Daoyin Liu ₁ , Cai Liang ₁

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Integrated bubbling-transport fluidized bed is a potential reactor for CO₂ capture with solid sorbents. The gas-particle flows in the reactor greatly influence the capture efficiency. This paper studied the gas-particle flow behaviors in this reactor, focusing on the particle circulation and gas entrainment. The results show that the particle circulation rate is mainly limited by the particle-returning capacity of loop seals. Both the particle circulation rate and the gas entrainment rate increase with the total static bed height, fluidization velocity, and central gas velocity. The particle circulation rate is the most sensitive to the fluidization velocity, whereas the gas entrainment rate is the most sensitive to the total static bed height. When keeping the total static bed height constant, the particle circulation rate and the gas entrainment rate increase with the bed height of stage II. Synthesizing the above analysis, fine sorbents are recommended when applying this reactor for CO₂ capture with solid sorbents.

中文翻译：

用于 CO2 捕集的两级集成鼓泡输送流化床中的气体粒子流

一体式鼓泡输送流化床是一种潜在的 CO _2反应器用固体吸附剂捕获。反应器中的气体粒子流极大地影响捕获效率。本文研究了该反应器中的气体-颗粒流动行为，重点关注颗粒循环和气体夹带。结果表明，颗粒循环率主要受回路密封的颗粒返回能力的限制。颗粒循环率和气体夹带率都随着总静态床高度、流化速度和中心气体速度的增加而增加。颗粒循环率对流化速度最敏感，而气体夹带率对总静态床高度最敏感。在保持总静态床高不变的情况下，颗粒循环率和气体夹带率随着第二阶段床高的增加而增加。₂用固体吸附剂捕获。

更新日期：2022-06-15

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