clamped between two flanges of the existing tu-bes. The Flash Mixer is used as a complete in-bet-
ween flange mixer. The latter has the advantage
of being removable in radial direction without any
need of disassembling the tubes.
Dichte = 1000 kgmViskosität = 1 mPas -3 CSE-B Mixer CSE-F Mixer Slide-in mixer Fig. 3 Aquamix DN100 / PN10, material 316 L Mixing performance and pressure drop The mixing performances of the Aquamix and the
Flash Mixer are based on two contrarily rotating
vortexes. These vortexes stretch over the whole
cross sectional area thus ensuring the excellent,
stable and well controlled mixing efficiency. The ho-
mogeneity is normally expressed by the coefficient
of the standard deviation. Acoefficient of variation
of < 0.03 is assessed as homogeneous. Full per-
formance of the mixer is achieved at flow veloci-
ties of > 0.3 ms Aquamix
Flash Mixer 10
100
500
50
dp(mbar) 0.512 1.5 34 w (ms )
-1 Fig. 5 Pressure drop for Fluitec
industrial mixers (water) The remarkable low pressure drops of the newlydeveloped Aquamix and of the Flash Mix allow for
the first time the application of
static mixers at li-
quid velocities of up to 4 ms
-1 . In the Aquamix, the additive isdosed before the flange connection, while the do-
sing device of the Flash Mixer can be integrated
directly in the in-between flange. For additive con-
centrations of lower than 1%, the dosing nozzle
must be mounted concentric before the mixing ele-
ment. Otherwise a normal T-piece can be applied
in a distance of 2 to 5D (D=diameters of the tube)
-1 .
Reynolds-Number > 15000Concentration X = 0.01-0.05
Sample size 0.033 DRatio of viscosity <10 X CSE-F Mixer Slide-in mixer CSE-B Mixer 0.050.55 AquamixFlash Mixer 0.010.1110 1234567891011120 Relative Length L/D (-) Fig. 4 Coefficient of variation in function of the relative mixing length before the mixing element. Fig. 4 shows the coef-ficient of variation in function of the relative mixing
length. The table indicates that measuring points
such as
temperature probes or pH probes must be
installed at a minimum distance of 10 D to the mixing element. Abb. 6 Fluitec Flash Mischer DN65 /PN10-PN64