高含硫气井新型胺类溶硫剂的性能研究:溶硫规律和再生性能(上)

Performance studies on new sulfur solvent containing amine for high-sulfur gas well:Dissolving sulfur rule and regeneration property(Ⅰ)

关键词:  高含硫气井  硫沉积  硫溶剂  性能评价 

Key words:  high-sulfur gas well  sulfur deposition  sulfur solvent  property evaluation

摘要:

针对造成高含硫气井内堵塞和腐蚀的硫沉积问题,研制出了以有机胺类化学溶剂为主剂,以物理溶剂为助剂,并配合乳化剂、硫化物催化剂、表面活性剂等的新型胺类溶硫剂体系,并对其溶硫性能以及溶硫后单质硫的分离回收性能进行了评价和研究。结果 表明,新型胺类溶硫剂的溶硫过程迅速,在30 min时基本完成,溶硫量达59.45 g/100 mL；升高溶硫温度、反应气氛中含有H₂S或硫以粉状形态存在时,均有利于溶硫量的提高；溶硫体系中加水量为10%(φ)时,溶硫量保留率为74.27%；产物中加水可使单质硫析出回收,当加水量为900 mL时,单质硫的回收率高达34.32%。

Abstract:

Aiming at the blocking and serious corrosion caused by sulfur deposition in high-sulfur gas wells, a new sulfur solvent containing amine was developed, which composed of organic amine as promoter, physical solvent as assistant and a series of agents such as emulsifier, sulfide catalyst and surfactant. Properties of dissolving sulfur and separation recovery performance of elemental sulfur after soluble sulfur were evaluated and studied. Test results show that sulfur dissolving process is quickly by using the new amine sulfur solvent, mainly finishing in 30 minutes, and total dissolved solids (TDS) is 59.45 g/100 mL. It is beneficial to increase TDS with elevated temperature, H₂S content in the sulfur dissolving environment and powdery elemental sulfur. When the amount of water is 10%, the retention rate of TDS is 74.27%. The elemental sulfur is able to separate out for recycling through adding water to the amine solvent with dissolved sulfur. What is more, the recovery rate of elemental sulfur is 34.32%, when the content of adding water is 900 mL.