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1. Short drying time, 2. Easy to operate, labor intensity is low, 3. Easy to clean, 4. GMP, 5. High efficiency - details see: https://www.machineto.com/collagen-protein-spray-dryer-collagen-protein-hydrolyzed-spray-dryer-10295593

1. General description of collagen spray dryer:

LPG Centrifugal Spray Dryer is widely used in producing collagen powder, such as fish collagen.The designing of collagen spray dryer is as follows:

1. Drying system type: Open circulation type
2. Feeding type: Screw pump (regulated by inverter)
3. Hot air contact way: Parallel flow
4. Heating source: Steam/ Steam + electricity/ Thermal oil/ Hot air furnace (gas, oil, coal, etc)
5. Product collecting type: Two degrees cyclone separator (Collecting level>98%)
6. Atomizing type: Centrifugal type atomizing
7. Control system: Touch screen & PLC
8. Air filter system: Pre, middle and sub-high efficient filter (100,000 degree)
9. Discharging system: Cool air (dehumidifying) cooling collecting

Following is a picture of the spray dryer that we sold to Ecuador to produce collagen powder

2. General description of LPG Centrifugal Dryer:

Spray dryingis a method of producing a dry powder from a liquid or slurry by rapidly drying with a hot gas. This is the preferred method of drying of many thermally-sensitive materials such as foods and pharmaceuticals. A consistent particle size distribution is a reason for spray drying some industrial products such as catalysts. Air is the heated drying medium; however, if the liquid is a flammable solvent such as ethanol or the product is oxygen-sensitive then nitrogen is used

All spray dryers use some type of atomizer or spray nozzle to disperse the liquid or slurry into a controlled drop size spray. The most common of these are rotary disks and single-fluid high pressure swirl nozzles. Alternatively, for some applications two-fluid or ultrasonic nozzles are used. Depending on the process needs, drop sizes from 10 to 500 µm can be achieved with the appropriate choices. The most common applications are in the 100 to 200 µm diameter range. The dry powder is often free-flowing

Spray Dryingis still the most economical method of evaporation to reduce a liquid feed to solid powder particles. Powder remaining one of the most versatile methods of preservation and cost effective in both storage and transportation of finished goods.

Following is the PID diagram of LPG Centrifugal Spray Dryer:

3. Features of LPG Centrifugal Spray Dryer:

1. Quick drying speed, the surface area of material liquid through atomizing is increased greatly. In hot air stream, 95%~98% of moisture can be evaporated at moment. Particularly suitable to finish drying thermal sensitive material.
2. The product made by the machine has good uniformity, fluidity, solubility, high purity, and high quality.
3. The productive process is simple and the operation control is very convenient. For liquid containing is 40%~60% (for special material, may be 90%), it can be dried to powder product through drying one time. After dried, it is not necessary to crush and sieve. So it reduces productive procedure and raises the purity of product. For the size, bulk density and moisture of product can be adjusted within certain scope through changing operation condition. The control and management are very convenient.

4. Application of LPG Centrifugal Spray Dryer:

Foodstuff industry:Protein, milk powder, egg powder, blood powder, tea powder, soy sauce flavor, yeast, fruit powder, vegetable powder, collagen, non-diary creamer, acacia gum, carrageenan, mushroom powder, chicken power, Chinese herbal extract, etc

Ceramic industry:Alumina, zirconia, magnesium oxide, titanium oxide, magnesium titanate, pottery clay, china clay,

Chemical industry:Dispersed dyestuff, active dyestuff, organic catalyst, white carbon black, detergent powder, zinc sulfate, silicon dioxide, sodium metasilicate, potassium fluoride, calcium carbonate, potassium sulfate, and all kinds of waste liquid, etc.

5. Technical parameters of LPG Centrifugal Spray Dryer

Item	LPG
	5	25	50	100	150	200-3000
Inlet air temperature	≤ 350°C
Outlet air temperature	80-90°C
Evaporate capacity (kg/h)	5	25	50	100	150	200-3000
Driving type	compressed air drive	mechanical drive
Rotary speed	25000	22000	21500	18000	18000	15000
Diameter of atomizer tray (mm)	50	120	120	120	150	180-340
Heating source	Electricity	Electricity	electricity +steam	electricity +steam	To be solved by users	To be solved by users
Electric-heating power (kw)	9	45	60	81	99
Dried powder recovery rate (%)	≥ 95	≥ 95	≥ 95	≥ 95	≥ 95	≥ 95

6. Following are pictures of our LPG Centrifugal Spray Dryer:

A big spray dryer in Brazil

The spray dryer in our lab room