Importance

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Abstract

A method for mixing one or more fluid streams or for mixing solid particles with one or more fluid streams involves flowing the materials to be mixed through a static fluid mixer. The mixer includes an elongated fluid flow conduit having a centrally located longitudinally extending axis and an inner generally cylindrical wall extending around said axis and defining a fluid flow path within the conduit which extends along the central axis of the conduit. The mixer also includes at least two circumferentially offset internal baffle members designed to create countery-rotating vortices in fluids passing through the conduit. The first baffle is in the form of an elongated inclined plate positioned in said fluid flow path at a first location in said conduit. This baffle plate has an upstream end, a downstream end and a longitudinal axis. The first baffle plate is mounted on a mounting which extends between the wall and the downstream face of the baffle plate so that the upstream end of the first baffle plate is spaced radially from the wall a first distance which is less than a radius of the conduit. The downstream end of the first baffle plate is spaced radially from the wall a second distance which is greater than said first distance so that the baffle plate is disposed at an angle relative to the longitudinal axis of the conduit. The second baffle member has a configuration and arrangement which is essentially the same as the first baffle, except that the second baffle member is circumferentially offset approximately 90 degrees and spaced longitudinally of the conduit from the first baffle member. The upstream ends of the baffle members are spaced from the wall so as to permit fluid flow around the upstream ends to thereby minimize eddy currents and the like behind the baffle members. This arrangement facilitates complete mixing of fluids with other fluids and/or with solid particles flowing through the conduit.

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First Claim