Abstract: The demand for lube base oils is growing steadily. Under the background of carbon peaking and carbon neutrality goals, carbon footprint assessment has become a new way to promote the green transformation of industry. Based on the basic principles of accounting standard PAS 2050 developed by the British Standards Institute, the key accounting parameters were adaptively optimized, and the carbon footprint accounting method in line with the actual production of domestic lube base oil was established. Taking the lube base oil products of an enterprise as the evaluation object, the carbon footprint of its production stage was calculated, the emission impact assessment was carried out on the production process, unit devices and emission sources, etc., and targeted emission reduction measures and suggestions were put forward. The results showed that the carbon footprints (calculated in carbon dioxide equivalent) of the old three processes, hydrogenation and isomerization dewaxing were 437.9, 372.4 and 494.4 kg/t,respectively. Hydrocracking and lube oil hydrogenation units are the key devices to reduce emissions, and steam, electricity, fuel gas and circulating water are the key emission sources. Based on this, The emission reduction suggestions were put forward from the aspects of accelerating the substitution of new energy, improving device energy efficiency, strengthening carbon emission factor monitoring and optimizing public engineering systems to help enterprises achieve high performance.

Key words: lube base oil, carbon footprint, carbon emission reduction, carbon emission, production stage