1、 Betaine dryingEquipment design conditions
1. Liquid conditions
Material name: Betaine aqueous solution
Material solid content: 60-63%
Material handling capacity: 1667kg/hour
Dry solid content: ≥99%
Dry final moisture content: ≤1%
Dry product output: 1000Kg/h
Water evaporation rate: 667Kg/h
Liquid temperature: around 40 ℃
Equipment material: Physical contact 316L
Using heat source: superheated saturated steam 0.8MPa+electric heating compensation (or heat transfer oil)
Inlet air temperature of drying tower: 200-220 ℃
Drying tower outlet temperature: 100-110 ℃
Exhaust emission temperature: 80-90 ℃
Finished product particle size: around 60-80 mesh
Dry product recovery rate: ≥ 96%
2. Process conditions
Atomization method: centrifugal type
Contact mode between fog droplets and hot air: parallel flow
Heat source and heating method: steam
Tower inlet air temperature: around 200-220 ℃
Tower exhaust temperature: 100～110℃
Product capture method: tower bottom+cyclone collector
Product collection method: Main tower and cyclone collector
Equipment material requirements: 316L at the contact point with the material
3. Design meteorological conditions (standards)
Atmospheric pressure: 101.325KPa
Environmental temperature: 20℃
Relative humidity: 80%

4. Public works
4.1 Power Supply
Power supply: 380V, 3-phase, 50HZ
Power: 80kw
4.2 Steam consumption:
586950kcal/h÷500kcal=~1200kg/h
(Steam/kg calorific value: 500Kcal)
4.3 Compressed Air
Pressure: 0.4MPa
consumption: 1.2m³/min
4.4 Water consumption (cleaning of drying tower)
Pressure: Cleaning water gun
consumption: 500kg/h
4.4. The equipment occupies an area of approximately (10 × 15) meters
IICalculation process
1. Hourly dry product output:
G dry=1000 kg/h
2. Water evaporation rate per hour:
W water=1000 × (100-60) ÷ (100-40)=667kg/h
3. Hourly processing capacity of raw liquid:
G wet=G dry+W water=1000+667=1667 kg/h
4. Total heat consumption for water evaporation:
Q1= 667×650= 433550kcal/h
5. The necessary heat for material heating:
Q2=1000×0.4×1.2×(100-40)=28800kcal/h
6. The heat required to raise the temperature of moisture in wet materials:
Q3=1667×0.4×1.2×(100-40)=48000kcal/h
7. Total heat consumption: Qtotal=Q1+Q2+Q3=510350kcal/h
8. Drying equipment heat loss 15%:
Total Q=510350 × 1.15=586950kcal/h


3、 Selection description
Primary type: LPG800 centrifugal spray drying unit
Heating system: superheated saturated steam
Fine powder capture system: main tower+cyclone collector
Fine powder collection system: main tower+cyclone collector
Medium circulation system: open circulation of induced draft fan
Air filtration system: Junior high school efficiency
Feeding system: screw pump adjustable feeding
Control system: Instrument display temperature, pressure difference, inlet and outlet air temperature self-control, material liquid self-control


fourEquipment Technical Parameter Table

Water evaporation rate (Water purification evaporation)	667Kg/h (set)	Tower diameter/tower height	6.5M/15M
operate temperature	Inlet temperature 200/outlet temperature 100	Mechanical centrifugal atomizer	Domestic well-known brands
Installed power	Transmission 80KW
Gas consumption	About 1.2m3/min	water consumption	500kg/h (for cleaning purposes)

Drying system form	Open cycle system	Feeding method	Stable feeding of screw pump
Hot air contact method	Parallel flow method	Heat source method	Steam+electric heating compensation
Product capture method	Main tower+cyclone dust removal	Atomization method	Mechanical centrifugal atomization
control mode	Arbitrarily set and control the inlet air temperature, display temperature, pressure difference, and flow rate self-control

fiveExplanation of Equipment Mechanism Performance
The spray drying system includes the following
1Feed System
2Hot air system
3dry system
4Dust removal system
5Exhaust System
6control system
1. Feeding system
1.1 Mixing tank
Provide one 2400L mixing tank, with stainless steel 316L in contact with the material.
Form: Vertical
Capacity: 2400L
Material: The part in contact with the material is made of stainless steel 316L
1.2. Sink
Provide one conical water tank with a discharge valve underneath for converting water and materials
Material: The part in contact with the material is made of stainless steel 316L
1.3 Feed pump
Form: Screw pump
Power: 4KW
Structural material: The part in contact with the material is made of stainless steel 316L
1.4. Feed pipeline
Provide a feed pipeline from the feed pump to the drying tower.
Quantity: 1 set
Material: All stainless steel 316L
2. Hot air system
2.1 Initial Effectcentreair filter
Provide clean air required before spray drying
Filtration capacity: 27000m³/h（max）
Material: The filter material is non-woven fabric




2.2. Supply fan
A device used for conveying air
Form: Centrifugal
Power: 15kw
Model: 4-72-5A
Airflow: 15500m³/h
Wind pressure: 3100Pa/h
Attachment: Air regulating valve, shock-absorbing pad
2.3Steam heat exchanger+Electric compensation
Heat exchange area: 960m2+electric heating power: 486kw (normal operation 162kw self-control)
Material: 20g tube wing aluminum sheet
2.4. Hot air duct
Used to connect the outlet of the heater to the top of the drying tower, the pipeline is filled with heated hot air. The exterior is made of carbon steel plate, the inner wall is made of carbon steel Q235 after the high-temperature high-efficiency filter, and the insulation material is rock wool.
3. Drying system
3.1 Hot air distributor
The hot air distributor is located at the top of the drying tower, providing stable hot air for the drying tower.
Form: Specially designed distributor
Quantity: Three layers
Material: Stainless Steel 316L
3.2 Drying Tower Body
A tall cylindrical cylinder with a conical bottom for spray drying. The tower body has hot air inlet and outlet, inspection and cleaning port, observation hole, lighting hole, etc. The conical part is also equipped with a tapping device. The entire tower is installed on a bracket.
Tower diameter: inner diameter of 6300, outer diameter of 6500
Total height:~15000 (including discharge height)
Dry powder discharge port: φ240
Tower inner wall: δ 3mm stainless steel 316L
Outer wall of tower: color steel plate
XPS
Material: Rock wool
Thickness: 100
Observation doors: 2, mirrors: 2, lighting fixtures: 2
Vibration device: 6 pieces
Cone bottom: 1 piece
Star shaped discharge valve: 1 piece
Volume: 10L
Power: 1.1kw
Material: Stainless Steel 316
4. Dust removal system
A device used to remove tiny dust particles from the tail gas of the drying tower.
4.1whirlwinddust eliminationimplement
Quantity: 2 pieces
Diameter: φ1000
Material: Stainless steel 316L, δ2mm
4.2. Commutator
Quantity: 1 piece
Material: Stainless steel 316L, δ2mm
4.3. Storage bin
Material: Stainless steel 316L, δ2mm
4.4 Star shaped discharge valve
Volume: 5L
Power: 1.1kw
Material: Stainless Steel 316L
4.5. Air duct
Material: Stainless steel 316L, δ2.0mm
4.6Water filmdust collector
Size: Φ1800× 7500
Description: Ceramic nozzle, two-layer spray pipe, corrosion-resistant pump FS40-18-20 steel lined fluoroplastic
texture of material: SUS304
Power: 2.2kw
5. Exhaust system
5.1 Induced draft fan
A device used to generate the air volume required for the whole spray drying.
Form: Centrifugal
model: 9-26-12.5D
Power: 45kw
Airflow: 27000m³/h
Wind pressure: 4100Pa/h
Connection method: Coupling
Attachment: Air regulating valve, shock-absorbing pad
Material: Carbon Steel
5.2. Air outlet duct
Material: Carbon Steel
6. Control system
Explosion-proof control box
Material: Spray coating
Electrical control system configuration instructions:
1. Ordinary control.
2. Interlocking control of outlet temperature and feeding amount.