Comparison of powder extraction rates for special herbal extracts and high-speed spray dryers
ZPG special-purpose spray dryer is a special spray dryer. The high-speed centrifugal spray device of traditional Chinese medicine extract is the application of centrifugal spray drying technology in the drying of specific materials, and also uses high-speed centrifugal atomizers to disperse the material into mist. Full contact with hot air, complete instantaneous drying, forming a drying device for powdered products.
ZPG special-purpose dryer for extracting Chinese herbal medicines is a spray dryer that is specially designed to solve the Chinese herbal extracts and plant extracts. The special-purpose dryer for Chinese herbal extracts solves the following problems that occur when materials are dried in the original LPG high-speed spray dryer.
When the liquid material (filtered liquid material) is fed onto a centrifugal atomizing disk rotating at a high speed, the material liquid is stretched into a film on the rotating surface by the centrifugal force of the rotating disk and moves toward the edge continuously, resulting in sticking of the material, and the powder collection rate Will be low.
When it leaves the edge, it is atomized, and the atomized droplets (with a greatly increased surface area) exchange heat with the hot air and complete the drying process quickly within 10-30 seconds. If the material stays on the wall for a long time, the material will be generated. Coking deterioration is difficult to clean and does not meet GMP requirements.
In summary, this results in low yields, such as the LPG-150 spray dryer, which can only handle 50-60 kg/h of feed. The ZPG herbal extract dryer is fully enclosed. All parts are made of stainless steel and equipped with a three-stage purification device. The filtered air reaches 100,000 grades. Simplified and top equipped with a cold wall device, so that the temperature of the tower wall is lower than the gas temperature inside the tower to about 10 °C, the material stays on the wall will not produce coking metamorphism, greatly increased the rate of powder collection, and will not produce sticky wall phenomenon.
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