胺法气体脱硫胺液中热稳态盐离子的组成分析

建立了两种胺法气体脱硫胺液中热稳态盐的分析方法：离子交换-容量法和固相萃取-离子色谱法，优化了这两种方法的试验条件，并对这两种方法的线性范围、检出限、相对偏差，以及对实际样品的分析进行了对比，结果表明，固相萃取-离子色谱法检出很低，且重复性好；当胺液中的质量分数大于1．0％时，应采用离子交换-容量法，简单快速，当HSS的质量分数小于1．0％时，应采用固相萃取-离子色谱法，比较准确，相对偏差为3．6％。

ANALYSIS OF THERMOSTABLE SALT IONS IN THE AMINE LIQUID OF GAS DESULFURIZATION BY AMINE SWEETENING PROCESS

Two analysis methods for determining the heat-stable salt in th e amine liquid of gas desulfurization by amine sweetening process, ion-exchange volumetric analysis and solid phase extraction coupled with ion chromatography, were established. The test condition, linearity range, detection limit and rela tive deviation of the two methods were optimized and their analysis results of t he samples were compared. The detection limit of the latter was low and the repe atability was good, the former was simple and rapid at the thermostable salt con tent in amine liquid higher than 1.0%, but when the said content was less than 1 .0%, the latter was more accurate with a relative deviation of 3.6%.