Catalytic conversion process for producing ethylene and propylene using low-density oil fraction
A light oil, catalytic conversion technology, applied in catalytic cracking, petroleum industry, cracking, etc., can solve problems such as unrelated process methods, and achieve the effects of high selectivity, high cracking activity, and wide source of raw materials
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[0030] This embodiment illustrates: adopt the method provided by the present invention, the situation that olefin-rich light petroleum distillate is catalytically converted in a small-scale riser plus a fluidized bed reactor to produce ethylene and propylene
[0031] Using the steam cracked C4 fraction with an alkane content of 19.8% by weight and an olefin content of 80.2% by weight as a raw material, catalyst A was used to conduct a catalytic conversion test on a small riser plus fluidized bed reactor device with continuous reaction-regeneration operation. The raw materials are transported to the fluidized bed reactor of the riser plus fluidized bed reactor device. When the reaction temperature is 650°C, the pressure at the top of the reactor is 180 kPa, and the weight hourly space velocity of the feed is 4 -1 1. The weight ratio of the catalyst to the raw material is 30:1, and the weight ratio of the water vapor to the raw material is 0.25:1, and the catalytic conversion rea...
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