How the spray dryer drys materials with higher sugar content or thermal sensitivity

Spray dryer how to dry sugary material spray dryer spray dryer contains the problem of machine-soluble material drying difficult, generally organic solution will be flammable and explosive characteristics, explosion-proof closed laboratory spray dryer so that the material can circulate in a closed drying system, the whole system is full of inert gases (such as nitrogen or argon), can avoid organic dissolved media gas and external oxygen contact, to ensure safe production.
spray dryer is a safe nitrogen (or other inert gas) closed circulation mode, the entire system is closed, oxygen concentration online monitoring, once the oxygen concentration in the system reached 2%, the system will automatically force a shutdown and alarm, is a safe, easy-to-operate laboratory organic solvent special small spray dryer, through the nitrogen gas closed circulation and the use of solvents fully recovered and can be treated with flammable, toxic solvents, and can be dried with flammable, toxic solvents.
, due to the low boiling point of organic solvents, it is available to dry substances prone to thermal denaturation by means of low temperature drying.
spray dryer spray drying sugar content is relatively high (if juice, herbal or natural products extract) or thermally sensitive materials (such as enzymes live bacteria, etc.) because most polysaccharides, melting point is relatively low, in the heat, sugar melting, and polysaccharides itself is relatively easy to absorb moisture, so ordinary spray dryers, it is easy to appear sticky wall phenomenon, not easy to get good dry powder or particles.
In addition, such as enzyme preparations, live bacteria and some polymer materials that are relatively easy to denature at high temperatures, the use of ordinary spray dryers, materials are very easy to lose life or degeneration, at this time, reduce the spray dryer air in and out of the temperature, you can get a better experimental effect.
the advantages of the spray dryer mainly focus on the following points: (1) spray dryer drying speed is very rapid after the liquid after spray, the surface area is very large.
in high-temperature airflow, it evaporates instantaneously.
(2) spray dryer drying process droplet temperature is not high, product quality is better.
spray drying uses a very wide range of temperature (80-800 degrees), even with high temperature hot air, its exhaust temperature will not be very high, in the early drying, the material temperature does not exceed the humidity of the surrounding hot air wet ball, drying product quality is better.
, such as protein changes, vitamin loss, oxidation and other defects.
the quality of thermally sensitive materials, organisms and drugs is basically close to the standard for drying under vacuum.
(3) Spray dryer products have good dispersion, fluidity and solubility Because the drying process is done in the air, the product can basically maintain a spherical shape similar to the droplets, with good dispersion, mobility and solubility.
(4) spray dryer production process de-hydration, operation control easy spray drying is usually used to deal with 40%-60% wet content of the solution, special materials even if the wet content of up to 90%, can not be concentrated, the same can be dried into powdered products at once.
most products are dried and no longer need to be crushed and screened, thus reducing production procedures and simplifying production processes.
particle size, pine density, moisture, within a certain range, can be adjusted with changes in operating conditions, control and management are very convenient.
(5) to prevent pollution, improve the production environment Because spray drying is carried out in a closed drying tower, which avoids drying products flying in the workshop.
for toxic gases and odorous materials, the production process of closed circulation system can be used to burn toxic gases and odors, prevent air pollution and improve the production environment.
(6) spray dryer is suitable for continuous large-scale production spray drying can adapt to the requirements of large-scale industrial production, drying products by continuous discharge, in the after-treatment can be combined with coolers and wind transport, to form a continuous production line.