摘要
为了测试混合吸附剂的传质特性,设计了一套测试吸附剂渗透率的试验装置。在研究渗透率之前,先用平面热源法测试了散装石墨在不同膨胀温度及不同膨胀时间下的热导率,优选出了膨胀石墨的最佳膨胀工艺。然后采用最佳工艺对石墨进行膨胀,采用压力机与压制模具对石墨进行固化,而后以氮气作为气源,对膨胀石墨进行了固化及渗透率测试研究,研究发现,膨胀石墨的固化密度不同时,渗透率的大小差别较大,密度从100 kg.m-3到400 kg.m-3变化时,渗透率介于10-14～10-12m2之间变化。
Adsorbent permeability test unit was designed to study the mass transfer performance of the compound adsorbent.Firstly the plate heat source method was used to test the thermal conductivities of granular expanded graphite at different expanded temperatures and different values of expansion time,and then the optimal expansion process is selected.Secondly the optimal expansion process is adopted for compacting processes of expanded graphite under the pressing machine and compacting tool set.After that the permeability was tested with nitrogen as the gas source.The results show that the values of the permeability have dramatic differences when the curing density changed from 100 kg·m-3to 400 kg·m-3,the permeability varied between 10-14—10-12 m2.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2010年第S2期35-38,共4页
CIESC Journal
基金
国家自然科学基金项目(50736004
50806043)~~
关键词
膨胀石墨
固化石墨
渗透率
expanded graphite
compacted graphite
permeability
