C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/83
C10G 65/10 (2006.01) C10G 65/02 (2006.01) C10G 65/12 (2006.01)
Patent
CA 1225054
ABSTRACT OF THE DISCLOSURE A method for controlling the temperature and composition of a vapor feedstream into a second reactor connected in series flow arrangement with a first reactor. The effluent stream from the first reactor containing vapor and liquid fractions is first cooled against a vapor stream and then further cooled against a suitable external fluid, then is phase separated to provide vapor and liquid fractions. The separated vapor fraction is reheated against the first reactor effluent stream and passed at an intermediate temperature into the second reactor. The first reactor is preferably an ebullated bed type catalytic reactor and the second reactor is preferably a fixed bed type catalytic reactor which is operated at an inlet temperature 20-200°F lower than the first reactor effluent stream temperature. If desired, the effluent stream from the first reactor can be initially phase separated into vapor and liquid fractions, and the vapor fraction only passed to the first heat exchange step for cooling to a first lower temperature.
436287
Gowling Lafleur Henderson Llp
Hri Inc.
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