title: Optimal packing of a rotating packed bed for H(2)S removal.
abstract: The existence of H2S in a system could lead to catalyst deactivation, pipeline corrosion, and environmental pollution. A rotating packed bed (RPB), a novel reactor with high mass transfer efficiency and small dimension, is employed in this study to remove H2S. For RPB, the most significant section for mass transfer is the end-effect zone of packing. A mathematical model for liquid flow in the packing is established to quantify the length of the end-effect zone. A simple and effective visual experimental method is then proposed to investigate the end-effect zone in the RPB. A gas-liquid mass transfer experiment is finally employed to confirm the validity of the proposed mathematical model. With the aid of this model, the length of packing of a RPB used for pilot-scale H2S removal is optimized. The optimized RPB removes 99.8% of H2S (15 vol % to 0.03 vol %) from the system. The proposed model can help optimize the design of a RPB reactor.
authors.affiliation: College of Resources and Environment, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China.
authors.forename: Kai
authors.initials: K
authors.lastname: Guo
authors.forename: Jiawu
authors.initials: J
authors.lastname: Wen
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhao
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Zhang
authors.forename: Zongxiang
authors.initials: Z
authors.lastname: Li
authors.forename: Zhi
authors.initials: Z
authors.lastname: Qian
mesh_terms: D000042:Absorption; D002245:Carbon Dioxide / Q000032:analysis; D052918:Environmental Restoration and Remediation / Q000295:instrumentation* / Q000379:methods*; D006862:Hydrogen Sulfide / Q000302:isolation & purification*; D008962:Models, Theoretical; D010865:Pilot Projects; D012399:Rotation
chemical_list: D002245:Carbon Dioxide; D006862:Hydrogen Sulfide