Slurry spray-drying method
A drying and slurry technology, applied in the direction of spray evaporation, injection device, liquid injection device, etc., can solve the problems of microsphere bursting, generation of special-shaped and fine powder, etc., to reduce the probability of particle rupture, reduce the formation of special-shaped particles, Avoid the effect of too rapid evaporation
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specific Embodiment approach
[0050] The nozzle specifically includes:
[0051] Nozzle body, the nozzle body is provided with a nozzle head 1 for spraying material into droplets, a material inlet 4 communicated with the nozzle head 1, and a material cavity 8 connecting the nozzle head 1 and the material inlet 4; and protection Wind guide pipe 2, the protection wind guide pipe 2 is provided with a protection wind distribution port 5 and a protection wind injection port 6 communicated with the protection wind distribution port 5; the protection wind guide pipe 2 is arranged around the nozzle body, so that The protection wind ejected from the protection air injection port 6 surrounds the mist-shaped material ejected from the material injection port 3 of the nozzle head 1 .
[0052] In the present invention, in the pressure nozzle, in order to facilitate the installation and make full use of the structure of the existing nozzle as much as possible, so as to reduce the modification and save the cost, the presen...
Embodiment 1
[0103] This example is used to illustrate a method for spray-drying slurry provided by the present invention. The spray dryer of the present embodiment contains such as figure 2 nozzle shown.
[0104]The catalyst slurry (the total content of kaolin and pseudo-boehmite is 30% by weight) is introduced into the nozzle from the material inlet by a high-pressure pump. The tower body of the spray dryer is sprayed to form a mist cone, wherein the cone angle of the mist cone is 110 degrees, and the tower body is filled with high-temperature hot air from the drying air distributor. At the same time, the protection wind is introduced from the protection wind inlet (1), and the protection wind is sprayed into the tower body through the protection wind casing, the protection wind distribution port (4), the protection wind guide pipe and the protection wind injection port to surround the tower body. The fog cone is such that the outer surface of the fog cone is relatively isolated from ...
Embodiment 2
[0107] This example is used to illustrate a method for spray-drying slurry provided by the present invention. The spray dryer of the present embodiment contains such as figure 1 nozzle shown.
[0108] The catalyst slurry (the total content of kaolin and pseudo-boehmite is 30% by weight) is introduced into the nozzle from the material inlet by a high-pressure pump. The tower body of the spray dryer is sprayed to form a mist cone, wherein the cone angle of the mist cone is 120 degrees, and the tower body is filled with high-temperature hot air from the drying air distributor. At the same time, the protection wind is introduced from the protection wind distribution port (1), and the protection wind is sprayed into the tower body through the protection wind guide pipe and the protection wind injection port to surround the fog cone, so that the outer surface of the fog cone It is relatively isolated from the high-temperature hot air in the tower, wherein the flow rate of the prot...
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