Spray drying tower

A technology of spray drying tower and drying tower, which is applied in the direction of spray evaporation and evaporator accessories, which can solve the problems of fire and other problems, and achieve the effects of cost saving, energy consumption reduction and tower diameter reduction

Pending Publication Date: 2020-02-28
浙江美宝工业科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

and sometimes it catches fire

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] refer to Figure 1-2 , a spray drying tower, hot gas is input from the air inlet at the bottom of the drying tower, passes through the hot gas distributor 7, and is evenly output to the top of the drying tower, and the material to be dried is sprayed from the side of the drying tower through the atomizer Into the tower, after drying, it will be output in powder form from the bottom of the drying tower. The drying tower includes an upper tower body 1, which is a conical cylinder with an outlet on the top that shrinks upwards. After drying, the gas flows from the top of the upper tower body 1. Exit discharge. The drying tower of the present invention is a counter-flow type, that is, the direction of movement of the drying medium (hot air) is opposite to that of the atomized material liquid, and the atomized droplets move from top to bottom, while the hot air moves from bottom to top. The movement direction of the hot air in the drying tower is opposite to that of the ato...

Embodiment 2

[0031] refer to image 3 , this embodiment is the drying tower before the improvement, and the main technical parameters of the drying tower, the drying tower before the improvement, the spray gun is located at the top of the drying tower, the material droplets are sprayed from top to bottom, and the hot air is from the bottom of the drying tower upwards, as Countercurrent drying tower. The height of the straight section of the drying tower is 25 meters, and the diameter of the straight section is 7 meters. Taking drying laundry powder as an example, the evaporation capacity of the drying tower is 13500kg / h, the initial mass fraction of laundry powder is 63~65%, the feed temperature is 55~60 ℃, and the air volume of the inlet air is 84440m 3 / h (under standard conditions), inlet air temperature: 380-400 ℃; exhaust air volume: 103040 m3 / h (under standard conditions); exhaust air temperature: 105-120 ℃; powder mass fraction: 97.2%. At this time, the hourly energy supply is abo...

Embodiment 3

[0033] This embodiment is the drying tower of the present invention, and the main technical parameters of the drying tower. There are 3 short spray guns evenly distributed on the upper part of the first straight barrel section, a central spray gun is distributed in the middle of the straight barrel section, and the upper part of the second straight barrel section is evenly distributed. Distributed with 3 long spray guns. The material droplets are sprayed from top to bottom, and the hot air is from the bottom of the drying tower upwards, which is a countercurrent drying tower. The height of the straight section of the drying tower is 21 meters, and the diameter of the straight section is 6 meters. Taking dry laundry powder as an example, the evaporation capacity of the drying tower is 13,500kg / h, the initial mass fraction of laundry powder is 63~65%, the feed temperature is 55~60 ℃, and the air intake volume: 65,790 m3 / h (under standard conditions) , Inlet air temperature: 420...

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Abstract

The invention discloses a spray drying tower. A hot gas enters from the bottom of the drying tower and is output from the top, to-be-dried materials entering the drying tower from the side face in a spraying mode are dried and then are output from the bottom of the drying tower in a powdery mode, and the drying tower comprises an upper tower body, a straight cylinder section and a lower tower body. The upper tower body is a conical barrel body which is provided with an outlet in the top and is reduced in diameter upwards, and the dried gas is discharged from the outlet in the top of the uppertower body; the straight cylinder section extends vertically downwards from the lower end of the upper tower body, the straight cylinder section comprises a first straight cylinder section and a second straight cylinder section which are equal in axial length from top to bottom, a circle of short spray guns are annularly arranged on the inner wall of the first straight cylinder section, and a circle of long spray guns are annularly arranged on the inner wall of the second straight cylinder section; a central spray gun is arranged on the inner wall of the middle of the straight cylinder section, the lower tower body is in a cone shape with the diameter shrunk downwards, and a hot gas distributor is arranged on the cross section of the top of the lower tower body.

Description

technical field [0001] The invention relates to the field of drying equipment, in particular to a spray drying tower. Background technique [0002] Spray drying is a drying process in which the raw material liquid is put into an atomizer to separate into droplets, and hot air or other gases are in direct contact with the droplets to obtain powder-shaped products. The method of using a spray dryer is often used in the food, pharmaceutical, chemical and other industries. Spray drying has a fast drying speed, and it only takes a few seconds to complete. It is suitable for drying heat-sensitive materials. Since the drying process is completed in an instant, the particles of the finished product can basically maintain the approximate spherical shape of the liquid droplets, and the product has good dispersion and fluidity. and solubility, the production process is simplified, and the operation control is convenient. Spray drying is usually used for solutions with a solid content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/18B01D1/20B01D1/30
CPCB01D1/18B01D1/20B01D1/30
Inventor 童永请柴荣才符俊黄斌
Owner 浙江美宝工业科技股份有限公司
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