Objective
In drying operation in Malteries, the cost of energy reach over 40% of the final product. In this sector, many improvement have been done since the last few years, but none of them is fully satisfied independently of last innovation on dryers. The problem we are concerned with is to dry as quick as possible a grain from an initial know moisture to a desired value, with the minimal energy cost and with respect to quality constraints for the product.
The objectives of this project, based on the innovative idea to save energy by washing the exhausted saturated air and to restituate energy saving by water transfert and treatment on a pre-heating exchanger on air inlet is to reduce from about 25% energy cost within a maximum payback of 3 years investment.
The main characteristics of the project which would be installed in St. Saulves Units are the following : ACTUAL DATAS :
Grains product capacity : 55000 tons/year.
Operational times : 8600 hours/year.
Actual consumption of thermic energy : 3400 TOE/year.
Actual cost of thermic energy : 3400 KF/year.
Exhausted air temperature and moisture : 28 deg. C and 95% HR.
Inlet air temperature and moisture : 11 deg. C and 70% HR.
PROJECT DATAS :
Grains product capacity : 5500 tons/year.
Operational times : 8600 hours/year.
Previsional consumption of thermic energy : 2600 TOE/year.
Previsional cost of thermic energy : 2600 KF/year.
Exhausted air temperature and moisture : 14 deg. C and 95 % HR.
Inlet air temperature and moisture : 22 deg. C and 50% HR.
Energy power of direct exchanger : 1000 kW
Energy power of restituate unit : 1400 kW
Air flow : 260000 kgs/hour.
Programme(s)
Topic(s)
Call for proposal
Data not availableFunding Scheme
DEM - Demonstration contractsCoordinator
75066 Paris
France