Polytetrafluoroethylene Wire Mesh Packing in a Rotating Packed Bed: Mass-Transfer Studies
Polytetrafluoroethylene Wire Mesh Packing in a Rotating Packed Bed: Mass-Transfer Studies
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旋转填充床中的聚四氟乙烯丝网填料：传质研究
DOI：
10.1021/acs.iecr.6b02630
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发表时间：
2016
影响因子：
4.2
通讯作者：
Chen Jian-Feng
中科院分区：
文献类型：
--
作者：
Chen Qiu-Yun;Chu Guang-Wen;Luo Yong;Sang Le;Zhang Li-Li;Zou Hai-Kui;Chen Jian-Feng
聚四氟乙烯(PTFE)材料因其优异的防腐性能而被用作旋转填充床(RPB)中的金属丝网填料。分别用NaOH-CO2化学吸收体系和氧-水物理脱附体系对聚四氟乙烯RPB的有效界面面积(Ae)和体积液侧传质系数(KLae)进行了实验研究。实验结果表明，Ea和kLae均随纤维直径和孔径的减小而增大。在材料方面，聚四氟乙烯填料的传质性能低于不锈钢丝网填料，但适用于一些高腐蚀性和高粘度的环境。此外，还提出了Ae和KLae的关联式。
Polytetrafluoroethylene (PTFE) material, which is well-known for its excellent anticorrosion properties, was used as wire mesh packing in a rotating packed bed (RPB). The effective interfacial area (ae) and the volumetric liquid-side mass-transfer coefficient (kLae) of the RPB with PTFE packing was studied experimentally by a NaOH–CO2 chemical absorption system and an oxygen–water physical desorption system, respectively. Experimental results showed that both ae and kLae increased with decreasing fiber diameter and pore size. As for material, mass-transfer performance of the PTFE packing was lower than that of the stainless steel wire mesh packing but is applicable in some high-corrosion and -viscosity environments. Moreover, correlations for ae and kLae were proposed.