闪蒸分离又称接触分离、接触脱气或一次脱气。在油田矿场，一次脱气方式相当于油井产出物直接进入分离器或储罐，油气瞬间达到相态平衡。一般用这种分离方式分离出的气体较重，气体中含轻质油较多。
使少量分离液达到油田分离测试条件，并经闪蒸后达到油田储罐测试条件。
A small volume of the separator liquid is raised to field separator test conditions and flashed to field stock-tank test conditions.
在这一点，闪蒸汽和空气被自动从凝结水中分离开。
At this point, flash steam and air are automatically separated from the condensate.
气液分离装置分离出的闪蒸气原先送到火炬系统，但现在作为燃烧气返回锅炉机组。
The expansion gases from the gas liquor separation unit were originally sent to the flare system, but are now recycled as fuel for the boiler unit.
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