| 摘要 |
A quench zone mixing apparatus ( 16 ) that occupies a low vertical height and has an improved mixing efficiency and fluid distribution across the catalyst surface includes a swirl chamber ( 20 ), a rough distribution network ( 100 ), and a distribution apparatus ( 120 ). In the swirl chamber ( 20 ), reactant fluid from a catalyst bed above is thoroughly mixed with a quench fluid by a swirling action. The mixed fluids exit the swirl chamber ( 20 ) through an aperture to the rough distribution system ( 100 ) where the fluids are radially distributed outward across the vessel to the distribution apparatus ( 120 ). The distribution apparatus ( 120 ) includes a plate ( 122 ) with a number of bubble caps ( 130 ) and associated a drip trace ( 150 ) that multiply the liquid drip stream from the bubble caps ( 130 ) to further symmetrically distribute the fluids across the catalyst surface. Alternatively, deflector baffles may be associated with the bubble caps ( 130 ) to provide a wider and more uniform liquid distribution below the plate ( 122 ). The distribution apparatus ( 120 ) can be used in the reaction vessel ( 10 ) without the swirl chamber ( 20 ) and rough distribution system ( 100 ), e.g., at the top of a vessel.
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