复合真空除氧器的研究与应用

Research and application of the compound vacuum deaerator

针对现有除氧器存在占地面积大、能耗高、除氧指标不稳定、运行费用高等问题,研制了复合真空除氧器。该除氧器采用雾化喷嘴、负压泵和解析除氧等关键技术,可使水珠细化并形成二次雾化,最终使喷嘴喷出的雾状颗粒形成实心锥体,达到深化除氧的目的。在胜利油田现河采油厂的应用表明,当供水压力为0.35～0.55MPa、进水含氧质量浓度低于8mg/L时,复合真空除氧器运行稳定,并能使出水含氧质量浓度低于0.06mg/L;该除氧器占地面积小、操作简单、除氧指标低、可以在油田热采领域推广应用。

Considering the problem of the existing deaerator, such as large area covered, high energy consumption, unstable deoxidation and high operation costs, the compound vacuum deaerator was developed. The deaerator adopts the key technologies such as atomizing nozzle, negative pressure pump and analytical deoxidation, which gives rise to the thinning of water droplet and secondary atomization and finally makes the fog particle produced by the nozzle turn into a solid cone so as to achieve the purpose of stronger deoxidation. Its application in Xianhe Oil Production Plant of Shengli Oilfield shows that, when the water supply pressure is between 0.35 MPa and 0.55 MPa and the oxygenic quality fraction of water inflow is lower than 8 mg/L, the compound vacuum deaerator operates stably and can make the oxygenic quality fraction of water drainage lower than 0.06 mg/L. The deaerator is characterized by requirement of only a small area, easy operation and good effect of deaeration. It can be spread and applied in thermal recovery of oilfields.