Centrifugal spray drying tower of spray granulation fluidized drying unit

A technology of spray drying tower and atomizer, applied in the field of centrifugal spray drying tower, can solve the problems of affecting product quality, high production cost, inability to granulate, etc., to improve heat utilization efficiency, prevent wall sticking, and improve drying efficiency Effect

Active Publication Date: 2013-01-02
CHANGZHOU YUTONG DRYING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the above-mentioned prior art is that the dried droplets of spray granulation must contain binder, otherwise the granulation cannot be done.
The use of binders, on the one hand, makes the production cost higher, and on the other hand, the binders often affect the product quality.

Method used

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  • Centrifugal spray drying tower of spray granulation fluidized drying unit
  • Centrifugal spray drying tower of spray granulation fluidized drying unit
  • Centrifugal spray drying tower of spray granulation fluidized drying unit

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0033] Such as figure 1 , the spray granulation fluidized drying unit of the present embodiment, which includes: a spray drying tower 1, the spray drying tower 1 includes a tower top 1.1, a tower body 1.2 and a conical tower bottom 1.3 which are sealed and connected up and down in sequence; 1.1 is provided with the air distribution ring 1.6 that links to each other with the hot air system. The hot air system includes a spray air heat exchanger 5, and the top air outlet of the spray air heat exchanger 5 is connected to the air inlet of the air distribution ring 1.6 through an electric heater 10 and a first high-temperature high-efficiency filter 9 in sequence. The air inlet at the bottom of the spray air heat exchanger 5 is connected to the air outlet of the spray blower 24 , and the air inlet of the blower 24 is connected to the first primary and medium efficie...

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Abstract

The invention relates to a spray granulation fluidized drying system of a spray granulation fluidized drying unit, comprising a centrifugal spray drying tower, wherein the centrifugal spray drying tower comprises a tower top, a tower body and a tapered tower bottom which have an upper and lower sealing connection in order; the center of the tower top is provided with an atomizer, and a pressure spray nozzle for spraying dry powder upwards is arranged in the spray drying tower and under the atomizer. According to the invention, by adopting the mode of spraying downwards from the top and spraying upwards from the bottom, relative to the upward spraying, the downward spraying is suitable for further fining fog drips and increasing the fog drip density to guarantee the full and high density contact between the fog drips and dry powder; in advance, in the descending process of the fog drips, fine particles in the fog drips rapidly become sticky semi-wet state and bonds with oncoming dry powder to form particles with low humidity, thus granulation and drying can be realized without a binder.

Description

technical field [0001] The invention relates to the technical field of drying equipment, in particular to a centrifugal spray drying tower of a spray granulation fluidized drying unit. Background technique [0002] Existing spray granulation dryers are widely used in chemical, pharmaceutical, food and other industries for the preparation of tablets, granules, capsules, instant food, beverage granules, slow-release granules, chemical granules, etc. [0003] The process flow of the existing spray granulation dryer is generally: the air enters the bottom of the fluidized bed after being heated by a heater, and passes through the distribution plate to contact with the material to make the material fluidized. The mother liquid and the binder are sent to the atomizing nozzle by the pressure pump, and after atomization, they are coated on the surface of the fluidized particles to make the particles bond to each other. After continuous fluidization, coating, and drying, the particle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/18B01D1/14
Inventor 陆文光
Owner CHANGZHOU YUTONG DRYING EQUIP
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