Catalytic cracking process

Details Catalytic cracking process Catalytic cracking process

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01)

Patent

CA 2117524

In a process for catalytically cracking a heavy hydrocar- bon feedstock in a vertical riser reactor (120), the feedstock is mixed with hot regenerated cracking catalyst adjacent the base (12) of the reactor and, as the mixture flows up the riser (l30), is thermally and catalytically cracked by the catalyst for at least I second and for at least the first 50 % of the length of the riser reactor (130) from the base (120). The mixture is then quenched in a quench zone (50) located within the first 90 % of the length of the riser reactor (130) from the base (120) by injection of a quench fluid in an amount sufficient to lower the temperature in the riser by at least 3 °C (5 °F).

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