Abstract: To reduce carbon emissions in crude oil stabilization processes, this paper takes a negative-pressure flash evaporation process in a certain oilfield as the research object and analyzes the impacts of stabilization tower operating pressure, operating temperature, and compressor outlet pressure on various parameters. The results show that the carbon-emitting equipment includes buffer tanks, heaters, air coolers and negative pressure screw compressors and the carbon emission types are flare combustion carbon emissions and net purchased electricity carbon emissions. The operating temperature of the stabilization tower has the greatest impact on carbon emissions. When the operating pressure of the stabilization tower is 60kPa and the operating temperature is 70℃, the total carbon emissions decrease from 152.6tCO2 to 123.9tCO2. By changing the heat required for the front-end heater from being supplied by purchased electricity to being jointly supplied by low-pressure steam and associated gas combustion, the total carbon emissions can be further reduced from 123.9tCO2 to 81.9tCO2.

Key words: carbon emission reduction, crude oil stability, operating temperature, operating pressure, saturated vapor pressure