Tørring i overhedet damp Peder Fosbøl Oktober 2008 Stord.pdf · Production Facility 35.000 m²...
Transcript of Tørring i overhedet damp Peder Fosbøl Oktober 2008 Stord.pdf · Production Facility 35.000 m²...
Tørring i overhedet damp
Peder Fosbøl
Oktober 2008
Denmark
Norway
GermanyUSA
Peru
Office LocationsOffice Locations
Spain
Production FacilityProduction Facility
35.000 m35.000 m²² production facilityproduction facilityLocated in Located in HaarslevHaarslev, , FunenFunen -- DKDKPrePre--assembly facilitiesassembly facilitiesService setupService setup
through:through:▲Thermal Drying▲Evaporation▲Mechanical Separation
........””for a profitable and sustainable businessfor a profitable and sustainable business””
Our Objective:Our Objective:
Main Business Areas:Main Business Areas:
▲▲ Rendering, Animal ByRendering, Animal By--ProductsProducts
▲▲ Industrial Fish and Fish ByIndustrial Fish and Fish By--ProductsProducts
▲▲ Distillers and Brewers ByDistillers and Brewers By--ProductsProducts
▲▲ BioBio--Fuel, BioFuel, Bio--MassMass
▲▲ Municipal and Industrial SludgeMunicipal and Industrial Sludge
Type RCD Type TSH
Type TST Type TSC
Disc Drier – Rotor types
Tube Driers
Vacuum Disc Driers
Comparison of air driers
Drum Drier
Hot Air Drier
Dyno-JeT Hot Air Drier
Oil Consumption46,3 kg/ton fish
Oil Consumption33,3 kg/ton fish
Evaporators
Superheated steam drierEnergy ultilization
Comparison Superheated steam drier and Hot air drier
Drier/Evaporator influence on quality of fish meal
Drier Energy for Evaporator
Energy consumption
Mink digestibility, % Evaporation temperature °C
Steam drier Atm. Waste Heat Low 85-90 ~100
Vacuum Disc drier Waste Heat Very Low 90-92 ~70
Hot air drier, drum Steam or MVR High 90-93
60-65
Superheated steam, drum Waste Heat Low 85-90 ~100 Steam drier+Hot air drier 75-80 %, TS split
Waste Heat Low 88-90 ~100/~65
Steam drier+Hot air drier 60-65 % TS split
Waste Heat Steam or MVR
Medium 90-93
~100/~65
Steam drier+Flash drier, superheated steam 60-65 % TS split
Waste Heat Medium 90-92 ~100
Flash Drier, Air Steam or MVR High 92-96 60-65
DynoFlash DrierTemperature profile
0
100
200
300
400
500
0 1 2 3 4Drying time, min
Hot
air
tem
pera
ture
Hot air temperature Material temperature
V
Drier/Evaporator energy consumptionDrier Energy consumption
Drier. kg fuel/kg evaporated
Energy for Evaporator
Energy consumption Evaporator kg fuel/kg evaporated Wh/kg evaporated
Total fuel consumption kg/h
Steam drier Atm. 0,090 Waste Heat 0 990
Vacuum Disc drier 0,087 Waste Heat 0 960
Hot air drier, drum 0,087 Steam MVR
0,030 kg/kg 30 Wh/kg
1500
Superheated steam, drum 0,094 Waste Heat 0 1035 Steam drier+Hot air drier 75-80 %, TS split
0,090 Waste Heat 0 990
Steam drier+Hot air drier 60-65 % TS split
0,089 Waste Heat Steam or MVR
0,030 kg/kg 30 Wh/kg
1080
Steam drier+Flash drier, superheated steam 60-65 % TS split
0,092 Waste Heat 0 1010
Flash Drier, Air 0,087 Steam
MVR 0,030 kg/kg 30 Wh/kg
1500
Superheated Steam DryingWaste Heat utilization in evaporator and/or coagulator
Superheated steam drying contra Hot air dryingRetention time>~5 min
Protein containing products
Advantages• Energy consumption reduced (30-40%)• Dust exploision risk reduced• Feed safety increasedDisadvantages• Protein Quality reduced
Superheated steam dryingRetention time<~5 min contra retention time>~15 min
Protein containing products
Advantages• Increased protein quality
Disadvantages• Particle size reduction
Superheated steam drier. Termo oxidixer
Comparison Superheated steam drier and Hot air drier
Why Superheated steam drying?
• Convective driers can be designed for hot air drying and/or superheated steamdrying. Drying mode depending on rawmaterial.
• Existing Air driers can be modified to bothdrying modes
• A superheated steam drier may beoperated as a termo oxidizer. All waterevaporated (no condensate)
Hot Air Drying or Superheated Steam DryingSelect the operation which is most convenient