95% Dried Powder Collecting Spray Dry Machine For Coffee And Tea Industry
Product Description
A spray dryer is a device commonly used in the food industry, including the coffee and tea industry, for drying various liquid or semi-liquid substances into powder form. It is particularly useful for transforming heat-sensitive substances like coffee and tea extracts into dry powders while preserving their flavor and aroma.
The process of using a spray dryer for coffee and tea involves the following steps:
- Preparation of the liquid extract: The coffee or tea is typically brewed or extracted using hot water to obtain a concentrated liquid extract. This extract may undergo filtration or other treatments to remove impurities or unwanted particles.
- Atomization: The liquid extract is pumped into the spray dryer and atomized into tiny droplets. This is usually achieved by passing the liquid through a nozzle or a rotary atomizer. The droplets are dispersed into a stream of hot air inside the drying chamber of the spray dryer.
- Drying: As the atomized droplets enter the drying chamber, they come into contact with the hot air stream. The hot air rapidly evaporates the water content in the droplets, leaving behind dried particles.
- Powder collection: The dried coffee or tea particles are collected from the bottom or cyclone separator of the spray dryer. These particles have transformed into a fine powder form during the drying process.
Technical Parameters:
| Model | PLG |
| 5 | 25 | 50 | 100 | 150 | 200-2000 |
| inlet temperatyre ℃ | 140-350 automatically controlled |
| outlet temperatyre ℃ | 80-90 |
| Max water evaporation capacity kg/h | 5 | 25 | 50 | 100 | 150 | 200-2000 |
| centrifugal spraying nozzle transmission mode | compressed air transmission | mechaical transmission |
| rotation speed (r.p.m) | 25000 | 18000 | 18000 | 18000 | 15000 | 8000-15000 |
| spraying desc diameter (mm) | 50 | 100 | 120 | 140 | 150 | 180-340 |
| max electric heating power (kw) | 9 | 36 | 63 | 81 | 99 | settled by customer |
| overall dimensions | 1.8*0.93*2.2 | 3*2.7*4.26 | 3.7*3.2*5.1 | 4.6*4.2*6 | 5.5*4.5*7 | depends on tryer |
| dried powder collection | ≥95 | ≥95 | ≥95 | ≥95 | ≥95 | ≥95 |
Applications:
The advantages of using a spray dryer for coffee and tea include:
- Preservation of flavor and aroma: The spray drying process is known for its ability to retain the taste and aroma of the original liquid extract, resulting in a high-quality powdered product.
- Improved shelf life: The low moisture content achieved through spray drying helps to extend the shelf life of coffee and tea products.
- Enhanced solubility: Spray-dried powders often exhibit improved solubility compared to other drying methods, making them easier to dissolve in hot or cold water.
- Efficient production: Spray dryers can handle large volumes of liquid extract, making them suitable for industrial-scale production.
It's worth noting that the specific parameters and conditions during spray drying, such as temperature, airflow, and nozzle design, can be adjusted to optimize the drying process and achieve the desired characteristics of the final coffee or tea powder product.
