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    北京霍爾斯 > English > NEWS > Spray Dryer >
    Design Condition Summary of Special Centrifugal Spray Dryer Time:2018.04.10
    Design condition summary of special centrifugal spray dryer for condiments:

    1. Feed liquid condition
    Material Name: Soy Protein (Polypeptides)
    Initial moisture: 60%
    Final moisture: 5%
    Moisture evaporation: 250Kg/h
    Feed liquid temperature: 20°C(normal temperature)
    Feed liquid density: ≤1.2g/cm3
     
    2. Process conditions
    Atomization method: Centrifugal
    Contact method of droplet and hot air: Parallel flow
    Heat source and heating method: LPG fuel gas hot blast stove
    Inlet air temperature: 170~220°C(Temperature rise designed according to 220°C)
    Exhaust air temperature: 80~100°C (designed according to 90°C)
    Dust removal method: Two-stage cyclone + water film dust removal
    Product collection method: Dehumidification cool air cooling centralized material receipt
    System Material Requirements: See Configuration Checklist
     
    3. Design meteorological conditions (standard)
    Atmospheric pressure: 101.3KPa
    Ambient temperature: 20°C
    Relative humidity: 80%
     
    4. Public works
    4.1. Power supply
    Power supply: 380V, 3-phase 5-wire, 50Hz
    Power: about 61.7kw
    4.2. Compressed air
    Pressure: 0.6 MPa
    Dosage: 0.01m3/min
    4.3. Natural gas consumption
    Natural gas consumption: 77 Nm3/h
    4.4. Water consumption
    Pressure: 0.2MPa cleaning nozzle
    Dosage: 150kg/min
    4.5, equipment floor area about (length × width × height) m
    Length×width×height 8×10×14
     
    Condiment special centrifugal spray dryer calculation process
    1. Determinate parameters
    Moisture evaporation W water = 250kg/h
    Dry air inlet temperature t1=180°C
    Dry exhaust air temperature t2=90°C
    Product moisture-based moisture content (early water) ω1=60%
    Product moisture-base moisture content (final water content) ω2=5%
    Ambient temperature t0=20°C
    Humidity of air at ambient temperature d0=0.011kg water/kg dry air
    Raw material temperature: θ1 = 20°C
    The product temperature is 15°C lower than the exhaust air temperature, ie θ2=70°C (uncooled)
    Dry air moisture content d1, indirect heat exchange, d1=d0=0.011kg water/kg dry air






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