Abstract: To achieve energy conservation and emission reduction in oil and gas stations, the carbon emission processes of the in-station treatment system were analyzed based on dynamic heat transfer modeling of separators and heat exchangers and the main directions and specific measures for carbon emission reduction were determined. The results show that the main types of carbon emissions are direct emissions, fugitive emissions and indirect emissions from net purchased electricity. The sources of carbon emissions are equipment such as heating furnaces, pipelines, storage tanks, external transfer pumps, venting systems, booster pumps, injection pumps and associated gas coolers. The carbon emissions of the crude oil processing system, the produced water treatment system and the associated gas treatment system are 341.75kgCO2/h, 56.96kgCO2/h and 8.67kgCO2/h respectively. By applying the multi-functional oil-water separator, the waste heat utilization process of the produced water and the solar thermal utilization process, zero carbon emissions of the crude oil processing system can be achieved, with a reduction rate of 94.1% at the station.

Key words: station, carbon emission, heat transfer model, organic Rankine cycle, solar energy utilization