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Help CenterLentinan Centrifugal Spray Dryer, Plant Extract Spray Dryer
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Overview of Centrifugal Spray Dryer:
The centrifugal spray dryer is the core equipment in modern industry for efficiently converting liquid materials into high-quality powder. Its working principle is that through a high-speed rotating centrifugal atomizer, the liquid raw material is instantly scattered and stretched to form a fine mist net. At the same time, hot air is precisely introduced into the drying tower and comes into contact with the mist droplets in a highly efficient co - current or counter - current flow. This allows the moisture to evaporate rapidly within a few seconds, and finally a uniform and dry powder product is obtained.
The essence of this process lies in "instant drying". The extremely high heat and mass transfer efficiency enables even heat - sensitive substances (such as proteins, probiotics or natural extracts) to be dehydrated at a relatively low temperature, thus maximally retaining their active ingredients and natural properties. By precisely controlling the speed of the atomizer, the inlet air temperature and the air flow pattern, operators can flexibly control the particle size, moisture content, solubility and fluidity of the finished powder to meet the strict requirements of many fields, from food milk powder, pharmaceutical raw materials to high - end ceramic powder and nanomaterials.
Therefore, the centrifugal spray dryer is not only a drying technology but also a precise powder manufacturing system. It achieves an elegant transformation from "liquid" to "powder" in an efficient, continuous and controllable industrial way, and is an indispensable key link in the modern production line that pursues product quality and process efficiency.
System Flow Chart of Centrifugal Spray Dryer
Application of Spray Dryer in the Drying of Lentinan:
The spray dryer is a very ideal and efficient technical choice in the drying process of lentinan, especially suitable for converting the extracted and purified lentinan solution into high - quality finished powder that is easy to store and apply.
Lentinan is a β - glucan with important biological activities extracted from the fruiting body or mycelium of shiitake mushrooms. The core purpose of spray drying in this process is:
Realize the perfect transformation from liquid to solid: Convert the concentrated polysaccharide solution into fine powder with good fluidity in one step, which is convenient for standardized packaging, long - term storage and transportation.
Maximally retain biological activity: The immunomodulatory and anti - tumor activities of lentinan are its core values. The "instant drying" characteristic of spray drying (high inlet air temperature but extremely short material heating time and low actual temperature) can effectively prevent the degradation and inactivation of heat - sensitive polysaccharide molecules.
Improve solubility and stability: The dried polysaccharide powder has a large specific surface area and good rehydration property, and can dissolve quickly. At the same time, the powder form isolates moisture, preventing possible microbial contamination and enzymatic hydrolysis in the liquid state, and significantly improving the stability.
Superior product quality: Through process control, high-quality products with uniform particle size, good color and no burnt smell can be obtained.
Suitable for continuous production: It can be easily connected with upstream extraction, filtration and concentration processes to achieve automated continuous production with high efficiency.
Technical advantages of spray dryer:
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Fast drying speed
The atomized droplets have a small diameter (usually 20 - 150μm) and a large specific surface area. After contacting with hot air, they evaporate instantly (drying is completed within a few seconds), which is suitable for heat-sensitive materials.
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High product quality
The powder particle size, moisture content and fluidity can be controlled by adjusting parameters (inlet air temperature, atomization speed).
The material temperature is relatively low during the drying process, which can retain nutritional or active components (such as proteins and probiotics).
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Flexible process
It can handle liquids with different viscosities and solid contents (solutions, emulsions, suspensions).
It can adapt to various material characteristics by adjusting the atomizer structure (centrifugal disk, nozzle).
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Continuous automated production
Equipped with PLC or DCS control system to achieve full - process automation of feeding, drying, powder collection and tail gas treatment, which is suitable for large - scale continuous production.
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Controllable powder physical properties
By adjusting process parameters, powders with high sphericity, good fluidity and excellent solubility can be produced to meet the downstream processing requirements (such as tableting and mixed packaging).
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Energy - saving and environmental protection
The thermal efficiency is relatively high, and some models can be integrated with a waste heat recovery system.
Equipped with high - efficiency dust removal (cyclone separator + bag filter) and tail gas treatment devices to reduce dust emissions.
Industries suitable for centrifugal spray drying:
Food industry
Production of milk powder, soybean milk powder, coffee powder, fruit juice powder, egg powder, yeast, fruit and vegetable powder.
Drying of seasonings (such as soy sauce powder, yeast extract) and food additives (flavors, pigments).
Low-temperature drying of functional foods (probiotics, enzyme preparations) to protect active ingredients.
Pharmaceutical industry
Drying of raw materials such as antibiotics, vitamins, and traditional Chinese medicine extracts.
Preparation of spray-dried microcapsules for drug sustained release or taste masking (such as granules, capsule fillers).
Chemical engineering and materials
Granulation of dyes, pigments, ceramic powders, catalysts, and polymer particles (such as PVC, PE).
Preparation of precursors for nanomaterials and battery anode and cathode materials (such as lithium battery materials).
Environmental protection and bioengineering
Sludge drying in wastewater treatment and immobilization of microbial preparations (such as biopesticides).
Drying of bioactive products such as enzymes and single-cell proteins.
Other industries
Cosmetics (foundation, talcum powder), ceramic glazes, wettable pesticide powders, etc.
Technical parameters of centrifugal spray dryer
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