СATALOGUE / DRYING OF BULK MATERIALS IN A FLUIDIZED BED / Combining spray drying and freeze drying

Combining spray drying and freeze drying

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СATALOGUE / DRYING OF BULK MATERIALS IN A FLUIDIZED BED / Combining spray drying and freeze drying

Combining spray drying and freeze drying

The evaporation surface and the thickness of the frozen material layer play a significant role in improving heat and mass transfer. Increasing the evaporation surface is achieved by increasing the dispersibility and specific surface area of the material. This can be accomplished by atomization and additional pulverization of the frozen product, which allows to obtain a product of high dispersibility. According to preliminary estimates, the cost of removing 1 kg of moisture by spray drying is 6 times less than freeze drying. At the same time, transportation costs are significantly lower, and the condition of the products is stable during long-term storage. However, research has shown that spray drying can only be used for microorganisms that can withstand high temperatures.

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Information updated : 10 / 12 / 2025
In stock
Manufacturer : 1 year for Combining spray drying and freeze drying

Model: Combining spray drying and freeze drying

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Powders obtained by spray drying and combined spray and freeze drying have fundamental differences in particle shape. At the same time, the residual moisture content, surface properties of particles obtained by these two methods were similar. In both cases, the bulkiness was unsatisfactory. With the use of additives, an improvement in bulkiness was observed. In view of the above, it becomes obvious that there is a need to improve the energy efficiency of freeze dehydration technology, to develop new equipment, to create combined drying methods aimed at improving the quality of the obtained products. One of the tasks of improving the process of freeze drying (reducing the duration, energy consumption of the process) with simultaneous solution of the problems of quality of the obtained products can be solved by transition from drying in vacuum to drying at atmospheric pressure.

Pharmaceutical Glossary

Articles — A genre of journalism in which the author sets the task of analyzing social situations, processes, phenomena, primarily from the point of view of the regularities underlying them.

Technical specifications

For most crops, however, freeze drying remains the only suitable method. Recent research by scientists has shown that spray drying and freeze drying can be combined in a single process to produce protein-rich dry powders, with the main advantage of obtaining a highly dispersed product.
The process was carried out in two stages: spraying of the solution in a metal container filled with liquid nitrogen under constant shaking; freeze drying in a Crist vacuum lyophilizer. At the same time, the quality of products dried by the combined method (degree of preservation of valuable properties, original structure, activity of ingredients) is not inferior to freeze-dried in vacuum.

Additional information

The products have better bulkiness and morphology, and there is no sintering of the top layer. The powders obtained in this way can be used for further encapsulation, pressing, epidermal administration, as well as for increasing the solubility of poorly soluble substances. Some scientists have also investigated the effect of the drying method on powder friability, which depends on a combination of different factors: size, shape, and surface properties of the particles. The comparison of spray and combined spray and freeze drying methods was carried out in terms of such indicators as: particle size and shape; moisture content, physical and chemical properties; the influence of additives and coatings on the friability of powders.

Order status tracking

Roman Tsibulsky +79853643808 now online

James
For shipping to Oslo do you have to pay anything extra ? 28/12/2025 03:04

Roman Tsibulsky
Good day James, In our catalog, all prices are inclusive of shipping to the customer's door. Delivery to Oslo is included. 28/12/2025 03:08

Lily
LB-205 horizontal automatic wet alcohol wipes packaging machine delivery status ...thank you 28/12/2025 03:14

Roman Tsibulsky
Hello Lily, it is too early to check the status of your order. In 30 days only the epat of production will be completed. 28/12/2025 03:16

Evelyn
Dear Roman, how are you doing? Our company bought more than a year ago a filling and capping machine for penicillin vials, model XL-10. We got financing this year and want the same machine. Will you give us a discount? 28/12/2025 03:24

Roman Tsibulsky
Evelyn, thank you. We're doing great. Of course we will give a discount to the regular customer. Delivery of equipment also in Louisville ? Contact Natalia, she will send the contract and invoice. 28/12/2025 03:25

Mia
Roman, can you tell me if my rotary tablet press RZJ-35 has been shipped yet? Don't send it yet, I will send to your factory in China drawings of new punches, different design. 28/12/2025 03:34

Roman Tsibulsky
Good afternoon, Mia! We're pausing the shipment. Send drawings to the office mail. The terms of production of new punches 20 working days. 28/12/2025 03:37

Chloe
To what address to send you samples of bottles and caps to send them to the factory ? Regards Chloe. 28/12/2025 03:44

Roman Tsibulsky
Good day, Chloe We received the same question on WhatsApp and replied there as well. Kindly provide the shipment number for tracking purposes. Thank you. 28/12/2025 03:46

Amelia
Good day, tell me need delivery in Milwaukee to the settlement in the distance of 20 km. Can you organize this? 28/12/2025 03:54

Roman Tsibulsky
Amelia, Good afternoon, please send us an email to info@minipress.ru with the exact name of the equipment model, city, and your coordinates. We will calculate the delivery to you. 28/12/2025 03:56

Emily
Today we were promised delivery of a blister machine for MN-14 tablets and capsules, remember us ? No one's called us back. 28/12/2025 04:04

Roman Tsibulsky
Hello Emily, Our manager Natalya in the morning will dial the driver, also we ask you yourself to the transportation company. 28/12/2025 04:08

Aiden
HX-6 Plastic Tube Filling and Sealing Machine in Tbilisi? Price delivery terms and conditions 28/12/2025 04:14

Roman Tsibulsky
Aiden, good afternoon, we have received your request by email. In 15 minutes we will send you our quotation for this model of equipment. 28/12/2025 04:14

James
Good afternoon, we received the PR-15 powder dispenser in plastic vials, scheduled In the afternoon to open the box and test. 28/12/2025 04:24

Roman Tsibulsky
James, Good afternoon. Great news, please WhatsApp +79853643808 to send photo and video report. 28/12/2025 04:25

William
Can your technician come to York? We need technologist consultation and assistance. 28/12/2025 04:34

Roman Tsibulsky
William, We have already received your email. A technician tomorrow until 17:30 will contact you. Don't worry. 28/12/2025 04:38