Icing sugar spray drying system with high DE value

Abstract

The invention discloses an icing sugar spray drying system with a high DE value, which consists of a feeding part, an atomizing part, a drying part and an air supply part; a sizing agent obtained from pretreatment is thrown into a stock chest, the stock chest is connected with the feeding part, the feeding part conveys syrup to the atomizing part, then the syrup enters the drying part after being atomized by the atomizing part, and dry and hot wind is sent to the drying part by the air supply part; the syrup evaporated moisture content at the drying part enters the stage of product package after whirl wind separation; as the icing sugar has lower softening point (about 50 DEG C) and strong hygroscopicity, the icing sugar is soften to stick on the wall if the temperature of the tower wall is too high, while the icing sugar reaches the dew point to stick on the wall if the temperature of the tower wall is too low, therefore, a jacket is utilized to control the temperature of the tower wall, the entering air temperature is controlled at 120-140 DEG C, and the leaving air temperature is controlled at 65-75 DEG C, thus being capable of preventing the icing powder from sticking on the wall.

Description

Technical field [0001] The invention relates to a spray drying system for xylose powder. Background technique [0002] In the prior art, a spray drying system for powdered sugar is composed of a feeding part, a spraying part, a drying part, a blowing part, and a powdered sugar conveying part. The slurry from the previous treatment is driven into the storage tank, which is connected with the feeding part. The feeding part conveys the syrup to the spray part. After being atomized by the spray part, it enters the drying part, and the air supply part sends the dry hot air to In the drying part, the powdered sugar after evaporating water in the drying part is conveyed by the powdered sugar conveying part and finally enters the product packaging. The feeding part generally uses a screw pump. The spray part is a high-speed centrifugal atomizer. The main body of the drying part is a drying tower. The upper part of the tower is designed with a hot air distributor, which is connected to t...

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Problems solved by technology

[0005] 2. The air inlet of the existing centrifugal spray drying equipment is only equipped with an ordinary air filter. This configuration can only meet the spraying of materials with general hygroscopicity, and is greatly affected by factors such as weather and climate, because if the outside If the air humidity is high, the humidity in the tower will increase. Even if the water in the powdered sugar evaporates completely, the powdered sugar will re-absorb moisture and stick to the wall.

[0006] 3. The humidity in the tower of the existing centrifugal spray drying equipment increases, the air volume is small, it is difficult to form a strong air curtain in the tower, and the powdered sugar is easy to stick to the wall

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