Process Design For Optimum Energy Efficiency - sasta

ENERGY EFFICIENCY
• The principles of process energy efficiency in a
sugar factory are fairly simple :
– Reduce the amount of steam / vapour consumption
– Make use of lower-grade vapours for heating purposes
• The basic principle of vapour bleeding
– If 1 ton of evaporator bleed vapour from effect “n” in
an “N”-effect evaporator station is substituted for
exhaust steam, then the saving in exhaust steam
consumption is “n/N” tons.