摘要
Catalytic reforming is an important means for producing high-octane gasolinecomponent and aromatics from naphtha feedstock while providing a hefty amount of cheap hydrogen torefineries. Catalytic reforming, as one of the important processes needed by global refineries andpetrochemical plants, has become the focus of attention. In order to tackle the global environmentalprotection issues, every country has promulgated new gasoline standard. The reformer gasoline hasbeen regarded as the most ideal blending component for the reformulated gasoline thanks to its highoctane number, low olefin content and nearly zero sulfur content. The share of reformer gasolineaccounts for less than 10% of total gasoline pool marketed in China, while this share in thedeveloped countries of North America and Europe reaches 30%—38%. Hence increasing the ratio ofreformate blending component in gasoline pool should be the main instrument for improving thequality of clean gasoline in China. Large amount of hydrogen, as the co-product of catalyticreforming, can be used to improve the quality of petroleum products, develop hydrogenation process,reduce the olefin and sulfur contents in oil products, and provide a spate of cheap hydrogen sourcesto save large investment in construction of hydrogen plants and operating cost. Thus the role ofcatalytic reforming is increasingly capturing the attention of people in China. As China currentlyis faced with an urgent shortage of catalytic reforming capacity, catalytic reforming units in Chinawill have large development potentials as compared to the situation of catalytic reforming in thedeveloped countries of North America and Europe. China began to engage in the R&D work on catalyticreforming since the mid 1950s. In 1965 a 100kt/a semi-regenerative catalytic reforming unit, theR&D, design and construction of which were implemented by Chinese engineers and workers themselves,was put on stream successfully at Daqing refinery, which had operated on the first domesticallymanufactured Pt/γ-Al_2O_3 reforming catalyst (commercial catalyst grade designation: 3641).Afterwards a series of bimetallic and multimetallic semi-regenerative reforming catalysts andcontinuous catalytic reforming (CCR) catalysts have been developed and widely applied. In themeantime, the catalytic reforming process in China has been developing with a spi-raling rate. As ofMarch 31, 2003 forty-seven semi-regenerative reforming units with a total processing capacity of9.935 Mt/a had been put on stream in China, whereas 18 CCR units with a total capacity of 11.54 Mt/ahad been put into operation. The status of development of catalytic reforming in China is presentedin Table 1.
1 IntroductionCatalytic reforming is an important means for producing highoctane gasoline component and aromatics from naphtha feedstock while providing a hefty amount of cheap hydrogen to refineries.
