引用本文:沈长寿,贾长青,莫林,喻智明,刘永良. 高含硫天然气中元素硫溶解理论分析[J]. 石油与天然气化工, 2024, 53(6): 68-73.
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高含硫天然气中元素硫溶解理论分析
沈长寿1,2,3, 贾长青4, 莫林1,2,3, 喻智明1,2,3, 刘永良5
1.中国石油西南油气田公司天然气研究院;2.国家能源高含硫气藏开采研发中心;3.中国石油天然气集团公司高含硫气藏开采先导试验基地;4.西南油气田川东北作业分公司;5.中国石油西南油气田公司川东北气矿
摘要:
目的 通过高含硫天然气中元素硫溶解度的测试数据分析元素硫溶解过程。方法 依据化学反应的物料平衡理论计算物料比例和化学反应产物占比，论证元素硫溶解过程是否适用化学溶解理论。结果 元素硫溶解过程物料比例不满足化学反应的要求，化学溶解占比通常在10%以下，不适用化学溶解理论。元素硫在H2S、CH4、CO2、含H2S天然气中溶解度随着压力的升高而增大，适用物理溶解理论。结论 高含硫天然气中元素硫溶解过程适用物理溶解理论。
关键词:  高含硫天然气  元素硫  溶解过程
DOI：10.3969/j.issn.1007-3426.2024.06.011
分类号:
基金项目:中国石油西南油气田公司科研项目“高含硫集输系统新工艺、新材料应用适应性研究”（20230305-04）
Theoretical analysis of elemental sulfur dissolution process in high-sulfur natural gas
SHEN Changshou1,2,3, JIA Changqing4, MO Lin1,2,3, YU Zhiming1,2,3, LIU Yongliang5
1.Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;2.National Energy R&D Center of High Sulfur Gas Exploitation, Chengdu, Sichuan, China;3.High Sulfur Gas Exploitation Pilot Test Center, CNPC, Chengdu, Sichuan, China;4.Southwest Oil & Gas Field CDB Operating Company Chengdu, Sichuan, China;5.Northeastern Sichuan Gas District, PetroChina Southwest Oil & Gasfield Company, Dazhou, Sichuan, China
Abstract:
Objective Utilizing laboratory-measured data of elemental sulfur solubility in high-sulfur natural gas, the elemental sulfur dissolution process is analyzed. Methods Depending on the material balance theory of chemistry reaction, the proportion of materials and the proportion of chemical reaction products were calculated, and the applicability of chemical dissolution theory to the process of elemental sulfur dissolution was demonstrated. Results The proportion of materials in the process of elemental sulfur dissolution did not meet the requirements of chemical reactions, and the proportion of chemical dissolution was generally below 10%, which did not apply to chemical dissolution theory. The solubility of elemental sulfur in H2S, CH4, CO2, and H2S-containing natural gas increased with increasing pressure, which did apply to physical dissolution theory. Conclusion The dissolution process of elemental sulfur in high-sulfur natural gas is suitable for physical dissolution theory.
Key words:  high-sulfur natural gas  elemental sulfur  dissolution process