摘要
采用压力搜索法测量了四丁基溴化铵-氮气-水和四丁基溴化铵-氮气-二氧化碳-水体系水合物的相平衡数据。四丁基溴化铵水溶液的质量浓度范围为10％-30％，实验的温度和压力范围分别为283．25～288．65K和1．98～5．89MPa。在实验压力和温度范围内，添加四丁基溴化铵降低了氮气和氮气＋二氧化碳体系水合物的形成压力；而且随着四丁基溴化铵溶液浓度的增加，水合物相平衡压力下降的幅度也增大，说明四丁基溴化铵是氮气和氮气＋二氧化碳水合物形成的促进剂。实验结果还表明，在氮气中混入二氧化碳，水合物相平衡压力降低；随着二氧化碳含量的增大，水合物相平衡压力下降的幅度增大。
Hydrate phase equilibrium data for tetra-n-butyl ammonium bromide （TBAB）-nitrogen-water and TBAB-nitrogen-carbon dioxide - water mixtures were experimentally studied and reported in the temperature range of 283.25 -288.65 K, the pressure range of 11 98 -5.89 MPa, and the TBAB concentration range of 10 - 30 mass % using pressure search method. The experimental results showed that the presence of TBAB decreased the forma- tion pressure of nitrogen and nitrogen ＋ carbon dioxide hydrate at the experimental range. The pressure reduction increased with the increase of the concentration of TBAB. It presented that TBAB was a good promoter for nitrogen and nitrogen ＋ carbon dioxide hydrate formation. The experimental results also indicated that hydrate equilibrium pressure reduced when carbon dioxide was added into nitrogen. Moreover, pressure reduction was dependent on the carbon dioxide concentration. Nitrogen hydrate was more stable with the increase of the concentration of carbon di- oxide in mixed gas.
出处
《科学技术与工程》
北大核心
2014年第17期125-128,共4页
Science Technology and Engineering
基金
江苏省自然科学基金项目(BK2012602)
苏州市科技计划项目(SYG201042)资助
