Shanghai Xinyu Packaging Machinery Co., Ltd.
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LPG500 Centrifigural Spray Dryer
Ⅰ,Equipment design condition:
1, Feed liquid condition
Name of material: liquid
Solid content: 25%
Final moisture: 5%
Inlet air temperature: 200--210℃ (Inlet air temperature is 210℃)
Outlet air temperature: ～90℃
Water evaporation: 500 kg/h
Viscosity: no
Proportion of liquid: ～1.1 g/cm3
Heat source: Gas-fired hot blast stove
Liquid temperature: 20℃
2, Dry product condition:
Dry grain size: ～120 mesh
Dry matter accumulation proportion: ～0.8 g/cm3
Hygroscopicity: no
Outlet material temperature: 40～50℃
3, Process conditions
Atomization mode: Centrifugal
Contact mode between droplets and hot air: Parallel flow
Heat sources and heating methods: Gas-fired hot blast stove
Inlet air temperature: 210℃
Outlet air temperature: ～90℃
Powder collection mode: Two-stage cyclone precipitatorSystem material requirements: The contact part and outside of mainframe are SS304,Remaining are Q235.
4, Design meteorological conditions
Atmospheric pressure: standard atmosphere pressure
Ambient temperature: 20℃
Relative humidity: 60%
Ambient air moisture content:0.012 kg/kg
5, Public works (Total)
5.1 Electric source
Power supply: 380V,3phase,50HZ
Power: driving force 267 kw
6. Main parameters of equipment:
(1) Tower inner diameter: Φ5800 mm
(2) Tower outer diameter: Φ5960 mm
(3) Air volume: 15000 kg/h
(4) Inlet air temperature: 210℃
Outlet air temperature: ～90℃
(5) Dry product output: ～200 kg/h
Water evaporation: 500 kg/h
(6) Water content of dry powder: 4%
(7) Gas-fired hot blast stove: 800000 kcal/h
(8) Cyclone dust extractor 1: 2-- XXF/Φ1100
Cyclone dust extractor 2: 2-- XXF/Φ1000
(9) Blowing machine: Model:4-72-5A Power:15KW Speed:2900 rpm
(10) Induced draft fan: Model:9-26-10D Power:55KW Speed:1450 rpm
(11) Screw pump: Model:GF40-1 Power:4KW pressure:0.6 Mpa
Rate of flow:8 m3/h Speed:700 rpm
(12) Atomizer: Model:XH-500 Power:11KW
Speed:12000～15000 rpm
Ⅲ,Systems definition
Initial selection: LPG-500 spray dryer unit
Heating system: Gas-fired hot blast stove
Powder capture system: Two-stage cyclone separator
Dielectric circulation system: Draft fan open cycle
Air filtration system: Initial air filter
Feeder system: Screw pump adjustable automatic feeding
Control system: Control cabinet centralized control
Ⅳ, Schematic diagram of technological process (with drawings)
Ⅴ, Equipment technical parameter table
| Water evaporation(Purified water evaporation) | 500 Kg/h(max) | Tower diameter / tower height | Φ5.8m/13.6 m |
| Operating temperature | Inlet air 210℃/Outlet air 90℃ | Atomizer LPG-500 |
Speed:12000 r.p.m Disc diameter:Φ180mm |
| installed power | transmission～69KW | ||
| System heat | 80×104 Kcal/h | Compressed air consumption | 0.6 m3/min |
| Drying system form | Open circulation system | Feeding mode | Screw pump stable feeding |
| Hot air contact mode | Parallel flow mode | Heat source mode | Gas-fired hot blast stove |
| Powder collection mode | Two-stage cyclone precipitator | Atomization mode | Centrifugal atomization |
| Control mode | Control cabinet centralized control, can control inlet air temperature, digital temperature, pressure, pressure difference | ||