摘要
采用高压全透明蓝宝石水合物相平衡装置,测定了(CH4+CO2+H2S)三元酸性天然气在纯水条件下的水合物生成条件数据.实验温度范围为274.2～299.7K,压力范围为0.58～8.68MPa.混合物气体中H2S和CO2的浓度分别为4.95%(mol)～26.62%(mol)和6.81%(mol)～10.77%(mol).采用ChenGuo水合物模型对实验数据进行了计算,结果表明,在不同的H2S浓度下,ChenGuo水合物模型的预测精度优于CSMHYD模型.随着H2S浓度的增加,计算的绝对偏差增大.针对H2S浓度较高[>10%(mol)]的体系,该两种水合物模型均有待改进.
Hydrate formation conditions of （CH4＋CO2＋H2S） ternary sour natural gas mixtures in the presence of pure water were measured by using transparent sapphire cell device. The experimental temperature range was 274.2 to 299.7 K and pressure range was 0.58 to 8. 68 MPa. The hydrogen sulfide and carbon dioxide contents in the gas mixtures varied from 4.95% （mol） to 26.62%（mol） and 6.81% （mol） to 10.77 %（mol）, respectively. The hydrate phase equilibria data for sour natural gas in water were also predicted based on the Chen-Guo hydrate model and CSMHYD model. The calculation deviation increased, in general, with increasing H2S concentration in the gas mixture and the Chen-Guo hydrate model gave better predictions. However, both models are subjected to further improvement for high H2S content [e.g. 〉10% （mol）] systems.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2005年第7期1159-1163,共5页
CIESC Journal
基金
国家高技术研究发展计划项目(2005AA615030)
全国博士学位论文作者专项资金资助项目(200447).~~
关键词
酸性天然气
水合物
相平衡
模型
Carbon dioxide
Computer simulation
Hydrates
Hydrogen sulfide
Methane
Phase equilibria
Thermodynamics
作者简介
黄强（1965-），男，博士研究生，高级工程师．
