1. 1. Grain crop drying, handling and storage By SAMIR ALBADRI
2. 2. S.L.A.M. Sanitation Loading Aeration Monitoring
3. 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. 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. 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. 6. Aeration Aeration rates depend upon 4 factors. Bin type Air distribution system Desired grain moisture content Management practices
7. 7. Movement of Cooling Zones During Aeration Air flow either positive pressure (flow up) or negative (flow down)
8. 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
9. 9. Static pressure
10. 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. 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.
12. 12. Bridged grain
13. 13. 3D Level Scanner http://www.gulfatlanticequipment.com/manufacturer-binmaster.php
14. 14. Drying Methods Equilibrium Natural air and fans Relative vapor pressure Charts Drying front moves through grain
15. 15. Drying Methods .Non-equilibrium -Heated air in a bin or column dryer
16. 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. 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. 18. Bin Safety Shut off and lock out power when entering Do not work alone in bins Do not enter while loading/unloading
19. 19. Grain Bin Entry Procedures Saves Lives http://www.youtube.com/watch?v=FhIq87HPkT0
20. 20. Thank you