ERTO users have documented annual energy cost reductions on the order of 5-6% from optimization.
Plus, additional savings can be obtained by:
- Identification of wasted steam and various operating problems, such as:
a) Using steam to strip hydrocarbons from a distillation column for maintenance and then not closing the valve after a few hours.
b) Sending steam to an air condenser in order to be condensed and disposed of, seeking to avoid the direct vent to the atmosphere that would result in a noisy and visible plume.
- Tracking performance.
- Auditing and accounting of the steam and boiler feed water to help reduce wasted steam and identify imbalances.
- Continuous monitoring to prevent plant upsets resulting in steam wastage.
- Alerting for changes by periodic scan of all the flowmeters inside the model and warning of any change that occurs which exceeds a pre-defined threshold.
Reduce Energy Costs
Example: This chart shows the reduction in lost opportunity costs at a medium-complexity Refinery plus Olefins Unit.
First month: "Base line", ERTO being executed on-line but no optimization actions are taken.
Second month:, ERTO Optimization suggestions are obeyed progressively.
Third month:, ERTO Optimization suggestions are followed on a daily basis.