TACIT®
In a complex heat exchanger network, at any point of time
- Can’t decide which exchanger(s) to clean to obtain maximum energy savings?
- Can’t determine the optimal time window to clean the candidate exchanger(s)?
TACIT® is a continuous monitoring solution to track fouling in heat exchanger network to effectively:
- Prioritize the cleaning of exchanger(s)
- Determine the optimal schedule of heat exchanger(s) cleaning
- Determine ROI based justification for selecting exchanger(s) for cleaning
- Reduce energy consumption in crude distillation furnace
A common presumption is that cleaning a more fouled exchanger will lead to more energy and cost savings; however, this is not always true. As seen from the below graph, the energy savings potential of a lesser fouled exchanger can be more as compared to a more fouled exchanger.
Thus, at any given point of time, TACIT® identifies which exchanger(s) to clean and when, based on an overall economic/benefit analysis.
The problem
Challenge
Monitoring the performance of complex Heat Exchanger Network (HEN) to determine the optimal cleaning schedule to minimize energy consumption.
How we solve it
Solution
Implement TACIT® (Thorough Assessment of Coil Inlet Temperature), application assisted decision making to gain optimal control on your Heat Exchanger Network (HEN) performance.
What you gain
Benefits
- Improved energy efficiency by improving the heat recovery in the Preheat section to reduce the furnace fuel firing
- The reduced fuel consumption in furnace will also lead to reduced emissions
- For a 250 kbpsd refinery (~10 MMTPA), that could mean a savings of as much as $3.5 million or more annually, the consequent emission reduction from sustained maintenance of Coil Inlet Temperature represents a potential savings of 10,000 to 20,000 tonnes CO2/year