论文部分内容阅读
电解氢的净化普遍采用催化剂,吸附剂或吸气剂将粗氢中水份、氧等杂质除掉的化学吸附法,这种方法设备庞大,操作不便,净化效果差,其氢的纯度最多到露点-40℃左右,含水量为120PPM,含氧量为5～8PPM,一氧化碳,二氧化碳及氮等气体也不能完全除掉,这样严重地影响氢气使用效果。而且使用中的催化剂、吸附剂均需活化、再生等,这就更显得此法不便。用钯合金膜物理扩散法制备的超高纯度氢获得应用成功后受到人们的重视。用此法可获得氢的纯度为99.99999%以上,氧和氮小于1PPM,露点为-70～-80℃。同时还具有设备简单、操作方便等优点。
Electrolysis of hydrogen purification catalyst, adsorbent or getter to the crude hydrogen water, oxygen and other impurities removed chemical adsorption method, this method is huge equipment, easy operation, purification effect is poor, the purity of hydrogen up to Dew point about -40 ℃, moisture content of 120PPM, oxygen content of 5 ~ 8PPM, carbon monoxide, carbon dioxide and nitrogen and other gases can not be completely removed, thus seriously affecting the use of hydrogen. And the use of the catalyst, adsorbent are activated, renewable, etc., which is even more inconvenient this method. Ultra-high purity hydrogen prepared by the physical diffusion method of palladium alloy membrane has attracted people’s attention after its application. Hydrogen purity of 99.99999% can be obtained by this method, oxygen and nitrogen is less than 1PPM, dew point is -70 ~ -80 ℃. At the same time also has the advantages of simple equipment, easy operation.