Abstract: In response to the national strategy of “carbon peaking and carbon neutrality”, the application of heat pump technology has become an effective path to change the energy ladder supply system of refining process. Based on the heat demand and waste heat resource of PetroChina Harbin Petrochemical Company (HPC) in the refining process, it showed that the energy-saving potential of refining enterprises through direct heat exchange or hot water indirect heat exchange has reached a bottleneck.The integrated heat pump technology becomes another way to break the thinking pattern. Through exergy analysis and carbon emission analysis, the key energy-saving factors of steam heating and heat pump heating (compression type, absorption type) were compared and analyzed theoretically, and the optimal application scenario of heat pump technology in oil refining process was given. An example of HPC heat pump waste heat recovery project showed that the heat pump technology in refining industry energy saving and carbon reduction action was significant.

Key words: heat pump technology, exergy, refining process, CO2 emissions, waste heat