Method for producing aromatics by highly selective conversion of raw materials containing methanol and/or dimethyl ether
A high-selectivity, dimethyl ether technology, applied in the direction of hydrocarbon production from oxygen-containing organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problem of low selectivity of aromatics
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Embodiment 1
[0026] Methanol feedstock enters the bottom reaction zone, middle reaction zone, and top reaction zone of the fluidized bed reactor in sequence, and contacts with the Cu-ZSM-5 molecular sieve catalyst to generate aromatic products including benzene and toluene; the height of the bottom reaction zone is fluidized 10% of the total height of the bed reactor, the height of the middle reaction zone is 20% of the total height of the fluidized bed reactor, the height of the top reaction zone is 70% of the total height of the fluidized bed reactor, the bottom reaction zone, the middle reaction zone, the top The reaction temperature in the reaction zone increases sequentially, the temperature at the bottom of the reaction zone is 440°C, the temperature difference between the top reaction zone and the middle reaction zone is 80°C, and the temperature difference between the middle reaction zone and the bottom reaction zone is 60°C; among them, the bottom reaction zone The conversion rate ...
Embodiment 2
[0029] According to the conditions and steps described in Example 1, the dimethyl ether raw material enters the bottom reaction zone, the middle reaction zone, and the top reaction zone of the fluidized bed reactor successively, and contacts with the Ga-ZSM-5 molecular sieve catalyst to generate Aromatic products; the height of the bottom reaction zone is 20% of the total height of the fluidized bed reactor, the height of the middle reaction zone is 60% of the total height of the fluidized bed reactor, and the height of the top reaction zone is the total height of the fluidized bed reactor 20%, the reaction temperature in the bottom reaction zone, middle reaction zone, and top reaction zone increases sequentially, the temperature at the bottom of the reaction zone is 480°C, the temperature difference between the top reaction zone and the middle reaction zone is 20°C, the middle reaction zone and the bottom The temperature difference in the reaction zone is 60°C; among them, the...
Embodiment 3
[0032]According to the conditions and steps described in Example 1, methanol and dimethyl ether raw materials (the mass ratio of methanol to dimethyl ether is 1:1) successively enter the bottom reaction zone, middle reaction zone, and top reaction zone of the fluidized bed reactor, Contact with Zn-ZSM-5 molecular sieve catalyst to generate aromatic products including benzene and toluene; the height of the bottom reaction zone is 15% of the total height of the fluidized bed reactor, and the height of the middle reaction zone is 15% of the total height of the fluidized bed reactor 35%, the height of the top reaction zone is 50% of the total height of the fluidized bed reactor, the reaction temperature of the bottom reaction zone, the middle reaction zone, and the top reaction zone increases sequentially, the temperature at the bottom of the reaction zone is 470 ° C, the top reaction zone and The temperature difference in the middle reaction zone is 50°C, and the temperature diffe...
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