4.4 Article

Temperature Difference-Based Fouling Detection in the Heat Exchanger of Gas-Solid Fluidized Beds

期刊

CHEMICAL ENGINEERING & TECHNOLOGY
卷 45, 期 9, 页码 1623-1630

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.202200188

关键词

CO2 absorbent; Fouling; Gas-solid fluidized bed; Heat exchanger

资金

  1. Energy Efficiency & Resources Programs of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry & Energy, Republic of Korea [20182010600530]
  2. Korea Ministry of Environment (MOE) Graduate School specialized in Integrated Pollution Prevention and Control Project

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This study examines the fouling behavior of CO2 absorbent particles in fluidized beds and identifies the key parameters that affect absorbent fouling. The results show that the cooling water temperature, riser temperature, air velocity, and relative humidity are crucial factors in the fouling conditions.
Despite the harmfulness of absorbent fouling, its fundamental understanding is limited. The fouling behaviors in fluidized beds charged by CO2 absorbent particles were therefore examined under various physical conditions to identify key parameters that can assist in the direct detection of absorbent fouling. The results demonstrate that the absorbent fouling conditions cooperatively rely on multiple parameters: the cooling water temperature, the riser temperature, and the air velocity, with a minimal impact of the particle type. The physical parameters were found to be vitally correlated with another crucial factor: the relative humidity, implying that modulation of the relative humidity would be essential to prevent absorbent fouling in fluidized beds.

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