ºÝºÝߣ

ºÝºÝߣShare a Scribd company logo

part 2

•Download as PPTX, PDF•
•
Samir Albadri
Samir Albadri

Grain crop drying, handling, and storage involves several key steps: 1) Bin sanitation which includes cleaning aeration ducts, augers, floors and removing debris before loading grain. 2) Loading grain in a way that optimizes storage, such as using augers at slow speeds and a spreader to fill bins evenly. 3) Aeration to cool dried grain to 30-35°F using fans in positive or negative pressure, with the goal of moving the cooling front completely through the grain mass. 4) Monitoring grain temperatures and inspecting bins regularly for insects or hot spots.

1 of 20
Downloaded 53 times
Grain crop drying, handling and storage By SAMIR ALBADRI
S.L.A.M. • Sanitation • Loading • Aeration • Monitoring
Bin Sanitation • Clean and sanitize aeration ducts, augers, floors • Remove weeds, trash, moldy crop • Spray insecticides while bin is empty • Clean/inspect/replace aeration equipment and dryers
Loading • Optimize handling & storage operations • Operate augers at capacity, slow speed • Use a spreader to fill bin • Core the fines from center of grain • Record grain moistures going into storage • Screen for my cotoxins
Aeration Goals • To cool dried grain uniformly to 30-35oF. • Move cooling front completely through and out of grain mass • Avoid condensation on inside walls/roof • Maintain low grain temps as long as possible
Aeration • Aeration rates depend upon 4 factors. – Bin type – Air distribution system – Desired grain moisture content – Management practices
Movement of Cooling Zones During Aeration Air flow either positive pressure (flow up) or negative (flow down)
Aeration • Air flow either positive pressure (flow up) or negative (flow down) • Ventilation required during fan operation • Fan operation times depend upon airflow rate
Static pressure
Static pressure - Static pressure is the force required to overcome the resistance to air flow through grain and is usually expressed in inches of water column. - It is also the measure used to rate a fan's performance under load conditions such as drying, cooling and aerating grain - Static pressure is measured with a simple instrument known as a manometer (which is connected to the air plenum of a grain bin (air space below the false floor).
Monitoring • Check for insects while grain temperature is above 50 F. If found then fumigate. Fumigation will not be effective below 50 F. • Temperatures below 50 F will control insects • Inspect grain surface at least every other week • Walk on grain, poke into it, check for hot spots or insect infestations.
Bridged grain
3D Level Scanner http://www.gulfatlanticequipment.com/manufacturer-binmaster.php
Drying Methods • Equilibrium – Natural air and fans – Relative vapor pressure – Charts – Drying front moves through grain
Drying Methods .Non-equilibrium -Heated air in a bin or column dryer
Drying • Calculations to get the amount of grain stored • You can calculate the size of the job • You can relate it all to the speed of harvest for bin management
Bin Safety • Enter a bin only if you know its history and if you are not alone • If grain has not been removed you should see a cone in the middle of the bin. • If grain has been removed you should see a flat area or inverted cone, and a shiny surface on the side of the bin. If you do not see these signs, surface may be crusted and unsafe to enter.
Bin Safety • Shut off and lock out power when entering • Do not work alone in bins • Do not enter while loading/unloading
Grain Bin Entry Procedures Saves Lives http://www.youtube.com/watch?v=FhIq87HPkT0
Thank you

More Related Content

part 2

  • 1. Grain crop drying, handling and storage By SAMIR ALBADRI
  • 3. Bin Sanitation • Clean and sanitize aeration ducts, augers, floors • Remove weeds, trash, moldy crop • Spray insecticides while bin is empty • Clean/inspect/replace aeration equipment and dryers
  • 4. Loading • Optimize handling & storage operations • Operate augers at capacity, slow speed • Use a spreader to fill bin • Core the fines from center of grain • Record grain moistures going into storage • Screen for my cotoxins
  • 5. Aeration Goals • To cool dried grain uniformly to 30-35oF. • Move cooling front completely through and out of grain mass • Avoid condensation on inside walls/roof • Maintain low grain temps as long as possible
  • 6. Aeration • Aeration rates depend upon 4 factors. – Bin type – Air distribution system – Desired grain moisture content – Management practices
  • 7. Movement of Cooling Zones During Aeration Air flow either positive pressure (flow up) or negative (flow down)
  • 8. Aeration • Air flow either positive pressure (flow up) or negative (flow down) • Ventilation required during fan operation • Fan operation times depend upon airflow rate
  • 10. Static pressure - Static pressure is the force required to overcome the resistance to air flow through grain and is usually expressed in inches of water column. - It is also the measure used to rate a fan's performance under load conditions such as drying, cooling and aerating grain - Static pressure is measured with a simple instrument known as a manometer (which is connected to the air plenum of a grain bin (air space below the false floor).
  • 11. Monitoring • Check for insects while grain temperature is above 50 F. If found then fumigate. Fumigation will not be effective below 50 F. • Temperatures below 50 F will control insects • Inspect grain surface at least every other week • Walk on grain, poke into it, check for hot spots or insect infestations.
  • 14. Drying Methods • Equilibrium – Natural air and fans – Relative vapor pressure – Charts – Drying front moves through grain
  • 16. Drying • Calculations to get the amount of grain stored • You can calculate the size of the job • You can relate it all to the speed of harvest for bin management
  • 17. Bin Safety • Enter a bin only if you know its history and if you are not alone • If grain has not been removed you should see a cone in the middle of the bin. • If grain has been removed you should see a flat area or inverted cone, and a shiny surface on the side of the bin. If you do not see these signs, surface may be crusted and unsafe to enter.
  • 18. Bin Safety • Shut off and lock out power when entering • Do not work alone in bins • Do not enter while loading/unloading
  • 19. Grain Bin Entry Procedures Saves Lives http://www.youtube.com/watch?v=FhIq87HPkT0