TOP 500 WHO CHOOSE US, WE SPECIALIZE IN DRYING FIELD SINCE 1993,
Certificates such as SGS, CE, ISO can also be a proof of our quality
"our machinery has improved production capacity more than 50% in the regular process, not only in capacity but also in fine powder quality."
Drum dryers are used in the food industry for drying a variety of products, such as milk product, baby foods, breakfast cereal, fruit and vegetable pulp, mashed potatoes, cooked starch, and spent yeast. In a drying operation, liquid, slurry, or puree material is applied as a thin layer onto the outer surface of revolving drums that are internally heated by steam. After about three-quarters of a revolution from the point of feeding, the product is dried and removed with a static scraper. Factors affecting the rate of drying and final moisture content are residence time on the drum; surface temperature and film thickness.
A drum dryer consists of one or two horizontally mounted hollow cylinder(s) made of high-grade cast iron
or stainless steel, a supporting frame, a product feeding system, a scraper, and auxiliaries.
Typical structures of single and double drum dryers are shown in Fig.
1. The diameter of typical drums ranges from 0.5m to 6m and the length from 1m to 6m.
In operation, steam at temperature up to 200°C heats the inner surface of the drum.
The moist material is uniformly applied in a thin layer (0.5mm–2 mm) onto the outer drum surface.
Most of the moisture is removed at water boiling temperature. The residence time of the product on the
drum ranges from a few seconds to dozens of seconds to reach final moisture contents of often less than
5% (wet basis) (Tang, et.al., 2003). The energy consumption in a drum dryer may range between 1.1 kg
steams per kg of evaporated water and1.6 kg steam per kg of evaporated water, corresponding to energy
efficiencies of about 60%–90% (Hall, 1986; Moore, 1995).
Packing and Delivery:
Changzhou ZHENXING Environmental Technology Engineering Co., Ltd., this is Drying Equipment manufacture. We are specialized in development, manufacturing, and installation of dryers, mixers, granulators, grinders, conveyors, sieve and etc.
We follow a strict quality control procedure and we provide high-quality products with prompt after sales services and technical support.
During the installation, we can send our engineer to help you instruct if you need.
If you have any other questions, please feel free to contact with me if you need.