Shanghai Xinzhuang Instrument's Small Spray Dryer utilizes freeze dehumidification to continuously produce low-temperature and low-humidity air, combined with a specially designed atomization system for continuous ice-making and drying of liquid materials. Supercritical spray drying, which employs supercritical fluid technology, is an emerging method in the field of powder production. This technique has been used to prepare protein liposome powders, and studies comparing supercritical and subcritical spray drying methods have analyzed differences in particle size distribution, morphology, and other properties. When applied to drying sugar and chicken protein, the results show that the dried particles range from 1 to 60 μm, with spherical shapes and smooth surfaces. Due to the unique characteristics of supercritical fluids, they are increasingly being applied in various fields, such as extraction, drying, and chemical reactions. However, their poor water compatibility makes direct use in drying difficult, often requiring entrainment by other solvents. Since spray drying commonly involves aqueous solutions, the integration of supercritical fluid technology with traditional spray drying represents a promising research direction. While this technology has been studied abroad, no related reports have been published in China yet.
In terms of modeling and simulation, the development of computer technology has made it possible to solve complex mathematical models efficiently. Internationally, computational fluid dynamics (CFD) has been widely used to simulate the entire spray drying process, leading to significant progress. Research has focused on model development, calibration, and application in different drying systems, including horizontal, centrifugal, and large-scale pressure spray drying. Current commercial CFD software can analyze temperature, velocity, and humidity fields within the drying tower, as well as track the movement and changes in moisture and temperature of the material. To better understand droplet drying behavior, custom user programs are often added for more accurate analysis.
Adhering to the principle of "customer first," Shanghai Xinzhuang Instrument Manufacturing Co., Ltd. has dedicated itself to offering genuine, affordable products, ensuring a safe, reliable, and convenient shopping experience. The company's products have been selected by prestigious institutions such as the Chinese Academy of Sciences, the Academy of Agricultural Sciences, medical research institutes, and top universities including Peking University, Shanghai Jiao Tong University, Fudan University, Zhejiang University, Hong Kong Baptist University, and the Hong Kong Polytechnic University. These products are widely used in high-tech industrial zones like the Zhangjiang Medicine Valley in Shanghai, the Suzhou Nano Technology Park, and the Taizhou Medicine High-Tech Park.
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