Abstract
Yanbei project of Schlumberger Copower Oilfield Engineering Co., Ltd. - natural gas purification plant decarbonization unit is equipped with two sets of decarbonization systems (parallel operation). The two sets of systems adopt two tower process, full lean liquid circulation regeneration process, one tower absorption (absorption pressure 5.4mpag), one tower regeneration (regeneration temperature 95 oC~ 110 oC), purified natural gas carbon dioxide content <= 2.5vol%, single set The treatment capacity is 2300 KM3 / d. This paper introduces the problems existing in the decarbonization solution of the decarbonization unit in the natural gas purification plant in recent three years, analyzes the causes of pollutants affecting the quality of the decarbonization solution, and probes into the control measures for the pollution of the decarbonization solution, so as to provide reference.