Abstract: In order to meet the demand for high-quality raw materials in steam-crackedethyleneunits, SINOPEC Research Institute of Petroleum Processing Co.,Ltd.(RIPP) had developed the first generation of cost-effective MHUG-E technology and catalyst. The diesel and light naphtha fractions produced by using this technology can be used as high-quality ethylene raw materials. Fujiang Refining & Petrochemical Company Limited (FREP) uses MHUG-E technology to process straight run diesel. The product diesel shows a high-quality steam-crackedethylene raw material, with a conversion rate of only 9.5%, the mass fraction of paraffin of the product diesel increased from 47.5% to 55.7%, and the BMCI value decreased from 29.5 to 18.7. The results of long-term industrial operation show that the industrial equipment has been running stably for 70 months, with a very slow catalyst deactivation rate. The diesel product has a cetane index greater than 55, which is not only a high-quality national Ⅵclean diesel, but also a high-quality steam-cracked ethyleneraw material.

Key words: ethylene, MHUG-E, hydroupgrading, straight run diesel