煤气分析仪器,其柱箱中的5A分子筛色谱柱用于定量气体中的O2、N2、CH4、CO含量.实际应用中,由于5A分子筛色谱柱吸潮,4种气体组分保留时间往往提前,甚至分离度小于1.5,尤其影响氧气峰的峰形,氧含量测定准确度降低.为此,从调整阀切时间和延长5A分子筛色谱柱方面入手进行试验,以探寻解决问题的办法.经过一系列的试验和优化,*终使煤气中的O2、N2、CH4、CO在5A分子筛色谱柱内达到了更好的分离效果,尤其是使氧含量测定的准确度得到了提升.

名称：填充柱
固定相：分子筛
规格：3,m*3mm
型号：5A
 

Gas analysis instrument, the 5A molecular sieve column in the column oven is used to quantify the O2, N2, CH4, CO content in the gas. In practical applications, due to the moisture absorption of the 5A molecular sieve column, the retention time of the four gas components is often advanced. Even if the resolution is less than 1.5, the peak shape of the oxygen peak is especially affected, and the measurement accuracy of oxygen content is reduced. Therefore, experiments were carried out by adjusting the valve cut time and prolonging the 5A molecular sieve chromatographic column to find a solution to the problem. After a series of Through the experiment and optimization, the O2, N2, CH4, and CO in the gas finally achieved a better separation effect in the 5A molecular sieve chromatographic column, especially the accuracy of the oxygen content determination was improved.

Name: Packed Column
Stationary Phase: Molecular Sieve
Specifications: 3,m*3mm
Model: 5A