Method and device for catalytic cracking of heavy oil
A heavy oil catalysis and catalyst technology, which is applied in the field of catalytic cracking, can solve the problems of high regenerator coking temperature and excess heat removal of regenerator, and achieve the effects of reducing dry gas and coke yield, reducing residence time and promoting contact
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[0040] This embodiment illustrates, but is not limited to, the case where the method provided by the present invention is used to carry out the catalytic reaction of heavy oil to produce clean products.
[0041] As attached figure 2 As shown, the feed oil pipeline is injected into the first reaction zone 7 of the reducing riser reactor 4, and contacts and reacts with the cold catalyst lifted by steam in the lower part of the first reaction zone 7. The cold catalyst is regenerated from The temperature of the reactor 2 is lowered by the heat extractor 5 outside the regenerative inclined tube and enters the bottom of the riser reactor 4. In the first reaction zone 7 the weight ratio of the catalyst to the feedstock oil is 8:1, the residence time of the feedstock oil in the first reaction zone 7 is 1 second, the temperature of the first reaction zone 7 is 526℃, and the oil mixture continues to move upward into the first reaction zone 7 The second reaction zone 8, th...
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