20250207041. Device Method Preparing Aromatic Hydrocarbons Na (CHINA SHENHUA COAL TO LIQUID AND CHEMICAL .,)
DEVICE AND METHOD FOR PREPARING AROMATIC HYDROCARBONS FROM NAPHTHA
Abstract: the application discloses a device and method for preparing aromatic hydrocarbons from naphtha, and the device comprises a fluidized bed reactor and a riser reactor; the fluidized bed reactor is used for introducing a naphtha raw material to make contact with a catalyst from the riser reactor and react to generate a btx-containing product gas stream and a spent catalyst, the product gas stream is subjected to gas-solid separation, the product gas stream after separation is sent to a downstream working section, and unconverted naphtha after separation returns to the fluidized bed reactor as a raw material; and a part of low-carbon alkanes after separation return to the riser reactor as raw materials and are further converted into aromatic hydrocarbons and other components. according to the application, by connecting a high-temperature riser reactor and a relatively low-temperature fluidized bed reactor in series, a yield of low-carbon alkane is reduced and a yield of aromatic hydrocarbons is increased; and linear-chain and branched-chain aliphatic hydrocarbons can be efficiently converted into the aromatic hydrocarbons in a highly selective mode, and a content of p-xylene in a xylene mixture is greater than 50 wt %.
Inventor(s): Tao ZHANG, Jiming ZHANG, Zhongmin LIU, Guochun YAN, Mao YE, Liang WEN, Jinling ZHANG, Yanbin ZHANG, Hailong TANG, Huadong LIN, Jinming JIA, Haibo XU, Cheng ZHANG, Zhichao MA, Xiangao WANG, Xiang WANG, Xiangang MA, Gangbin FAN, Jing WANG, Guangyue XIE, Tao LV, Qinbao KANG
CPC Classification: C10G35/14 (CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas ; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution ; cracking to cokes ); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES)
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- Patent Applications
- CHINA SHENHUA COAL TO LIQUID AND CHEMICAL CO., LTD
- CPC C10G35/14
- Tao ZHANG of Dalian CN
- Jiming ZHANG of Beijing CN
- Zhongmin LIU of Dalian CN
- Guochun YAN of Beijing CN
- Mao YE of Dalian CN
- Liang WEN of Beijing CN
- Jinling ZHANG of Dalian CN
- Yanbin ZHANG of Beijing CN
- Hailong TANG of Dalian CN
- Huadong LIN of Beijing CN
- Jinming JIA of Dalian CN
- Haibo XU of Beijing CN
- Cheng ZHANG of Dalian CN
- Zhichao MA of Beijing CN
- Xiangao WANG of Dalian CN
- Xiang WANG of Beijing CN
- Xiangang MA of Dalian CN
- Gangbin FAN of Beijing CN
- Jing WANG of Dalian CN
- Guangyue XIE of Beijing CN
- Tao LV of Beijing CN
- Qinbao KANG of Beijing CN