Semi Regenerative Reforming Catalysts

Platinum and rhenium are the basic active metal components of semi-regenerative reforming catalysts. Semi regenerative reforming catalysts are an effective way to improve the catalyst by adding other auxiliary components to modulate the structure, density and properties of the metal reactive center. Rare earth metals have a good modification effect on the metal platinum, and the research on improving the performance of reforming catalysts as additives is more active.

The semi-regenerative reforming unit uses straight-run naphtha and secondary processed naphtha after hydrogenation as raw materials. And it adopts a two-stage mixed hydrogen semi regenerative catalytic reforming process to produce high-octane gasoline blending components. And it is by-produced hydrogen.

Semi regenerative reforming catalysts generally use alumina as a catalyst carrier.And they are supported by  the active component metal platinum, auxiliary agents and acidic components. Among them, the physicochemical properties such as the specific surface area and pore structure of the alumina carrier have an important influence on the activity, selectivity and stability of the catalyst. The carrier of it is prepared from special pseudo-boehmite (ASIA) powder produced by the aluminate precipitation method, and its specific surface area and pore volume are higher than those of the alumina carrier prepared by the hydrolys is method of aluminum alkoxide. Semi regenerative reforming catalysts prepared by this carrier are beneficial to the internal diffusion process of the reforming reaction,it has strong anti-coking ability, and it is also beneficial to the regeneration of the deactivated catalyst.

Catalytic reforming (reforming for short) is an important secondary process that mainly uses naphtha as raw material to produce high-octane gasoline blending components and light aromatics. Reformed gasoline has high aromatics content, low olefin and sulfur content. The research octane number (RON) is above 90, and it is a high-quality gasoline blending component. BTX (benzene, toluene, xylene) is an important basic organic chemical raw material, and it is about 70% of the BTX needed in the world comes from the reforming process. Hydrogen produced by reforming is an important and inexpensive source of hydrogen for refinery hydrotreating units.

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