Chinese Academy of Sciences

Sabic Global Technologies B.v.

Mingzhi Li

Zhongmin Liu

Mao Ye

Xiangao Wang

Changqing He

Yunpeng Xu

Bing Li

Yue Qi

Haitao Liu

Guangye Liu

Yingxu Wei

Peng Xie

Xinde Sun

A process for converting naphtha, lower olefin, light aromatic hydrocarbon, and gasoline with a high octane number by combining catalytic cracking of naphtha with steam cracking of lower alkane and catalytic cracking of higher alkanes and higher olefins. The process increases the yield of product with high value and significantly decreases the yield of low value product. At the same time, the power consumption is decreased as a whole since most reactants are converted in catalytic cracking at a lower temperature.

Process for converting naphtha

The present invention provides a process for methanol coupled catalytic cracking reaction of naphtha using a modified ZSM-5 molecular sieve catalyst, comprising performing a co-feeding reaction of methanol and naphtha on the modified ZSM-5 molecular sieve catalyst to produce low carbon olefins and/or aromatic hydrocarbons. In the process, the modified ZSM-5 molecular sieve catalyst comprises, in term of weight percent, 25-80 wt % of a ZSM-5 molecular sieve, 15-70 wt % of a binder, and 2.2-6.0 wt % of lanthanum and 1.0-2.8 wt % of phosphorus loaded on the ZSM-5 molecular sieve. The naphtha comprises 63.8-89.5 wt % of saturated chain alkanes and 5.6-29.8 wt % of cyclic alkanes. The naphtha and methanol concurrently pass through the catalyst bed, which are reacted during contacting with the catalyst under a reaction condition of a reaction temperature of 550-670&#xb0; C., a mass ratio of methanol to naphtha of 0.05-0.8, and a total mass space velocity of naphtha and methanol of 1.0-5 h.

Process for methanol coupled catalytic cracking reaction of naphtha using a modified ZSM-5 molecular sieve catalyst

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Dalian, China

Mingzhi Li