活性炭/膨胀石墨固化混合吸附剂导热和渗透性能测试

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (06): 866-869.

活性炭/膨胀石墨固化混合吸附剂导热和渗透性能测试

金哲权, 田波, 王丽伟, 王如竹

(上海交通大学制冷与低温工程研究所，上海 200240)

收稿日期:2010-05-25 出版日期:2011-06-29 发布日期:2011-06-29
基金资助:
国家自然科学基金资助项目(50806043)，全国优秀博士学位论文作者专项资金（200947）

Study on Thermal Conductivities and Permeabilities of AC/ENG Consolidated Composite Adsorbents

JIN Zhe-Quan, TIAN Bo, WANG Li-Wei, WANG Ru-Zhu

(Institute of Refrigeration and Cryogenics Engineering， Shanghai Jiaotong University， Shanghai 200240， China)

Received:2010-05-25 Online:2011-06-29 Published:2011-06-29

摘要/Abstract

摘要： 为了提高活性炭吸附剂的传热性能，同时不影响其传质特性，选择6种不同粒径的活性炭吸附剂，并按5种比例制备了活性炭/膨胀石墨固化混合吸附剂，采用稳态法，对样品进行了导热系数、渗透率的性能测试.研究表明：在600 kg/m3的密度下，不同粒径活性炭吸附剂导热系数基本维持在0.36 W/(m·K)的恒定值，渗透率随着粒径的增大而增大；活性炭/膨胀石墨固化混合吸附剂的导热系数最高可达2.61 W/(m·K)；随着活性炭比例的升高，导热系数逐渐减小，渗透率逐渐增大；当活性炭比例达到最大的71.4 %(2.5∶1.0)时，导热系数为2.08 W/(m·K)、渗透率为51.6 μm2，相比颗粒状活性炭，其导热系数提高了5.6倍.

关键词: , 吸附, 导热系数, 渗透率, 吸附剂, 活性炭, 膨胀石墨

Abstract: In order to improve the heat transfer performance and at the same time not to influence the mass transfer performance of the AC (activated carbon) adsorbent bed, six different sizes of AC grains were studied and five kinds of AC/ENG consolidated composite adsorbents were developed. Meanwhile, thermal conductivity and permeability of samples were tested with steady state method. Under the density of 600 kg/m3, all the thermal conductivities of AC grains has a constant value of 0.36 W/(m·K), while the permeability grows with the size of the grains. The highest thermal conductivity of AC/ENG consolidated composite adsorbents is 2.61 W/(m·K), however, the value drops and permeability grows with the ratio of AC increased. When AC reaches the maximal ratio, 71.4%, the thermal conductivity is 2.08 W/(m·K) which is increased by 5.6 times compared with the AC grains, and the permeability is 51.6 μm2.

Key words: adsorption, thermal conductivity, permeability, adsorbent, activated carbon, expanded graphite

中图分类号:

TK172

金哲权, 田波, 王丽伟, 王如竹. 活性炭/膨胀石墨固化混合吸附剂导热和渗透性能测试[J]. 上海交通大学学报（自然版）, 2011, 45(06): 866-869.

JIN Zhe-Quan, TIAN Bo, WANG Li-Wei, WANG Ru-Zhu. Study on Thermal Conductivities and Permeabilities of AC/ENG Consolidated Composite Adsorbents[J]. Journal of Shanghai Jiaotong University, 2011, 45(06): 866-869.

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