Operation evaluation of 4.5×10⁶ m³/d purification unit in the fourth natural gas purification plant of Changqing Oilfield

The fourth natural gas purification plant of PetroChina Changqing Oilfield Company is the first set of 4.5×10⁶ m³/d purification unit designed independently by Changqing Design Institute. It was put into production in November 2013, two sets of 4.5×10⁶ m³/d purification unit run smoothly up to now, which have reached the design requirements of the project in general. Through summing up experience and optimizing operational parameters in running process, the purification unit operated smoothly and well, and the key parameters were all controlled within the range of design index. This article summarized the operating condition of the fourth purification plant in the past year, put forward some countermeasures for solving existing problems of the unit, and also provided the improvement suggestions.