abstractDiesel vehicles are many large internal combustion engines and the main force, with power and fuel prices cheaper in China, is the largest oil consumption of products. Along with the people environmental protection consciousness, the enhancement of diesel oil products' quality, therefore our new 2000 diesel GB252-2000, the standard of the sulfur diesel, chroma, sediment, etcA higher article mainly discusses the application of FS hydrogenation - complexation capture process refined oil catalytic cracking diesel oil. Raw material and fushun petrochemical companies from the production of catalytic cracking diesel (d), mix pure preparations for 55% of pure and FS01 complexometric capture. FS method after refining diesel fuel catalytic cracking diesel oil refining of high yield, can reach. Alkaline nitrogen removal rate, reduce tissue rate, total insoluble, reduce to mg / 100 ml. After the catalytic cracking diesel oil refining consists of water-soluble acid-base, Mercaptan from muon g, sulfur is 0-1 drop g. g. g. - 1, speeds, After the refined oil catalytic cracking diesel oil, the chroma of the oxidation stability total insoluble, for mg / 100 ml, satisfy GB252-2000 quality paper designs an annual capacity of 200,000 tons of RFCC diesel hydrotreating process equipment, as well as the principle of selection of equipment, the main technical parameters, calculation and size. Experimental results show that this technique processing costs far less hydrotreating, is the ability to ascend without hydrogenation of the quality of diesel oil refinery effective ways.