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Heat Recovery Projects Estimated to Save $4.5 MM per year |
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A 110,000 barrels per day refinery in North America had an older 1970's vintage diesel hydro treating unit which had a combined feed exchanger, charge heater, one reactor, and a stripper. To help this refinery reach their desired level of energy efficiency, it was determined that capital cost modifications were required to increase heat recovery within and across these process units.
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UOP has 95 years of experience in refining and thousands of patents to its credit. It's process consultants use a methodology which not only considers value and cost of improved heat recovery but also the impact on operating flexibility, especially with respect to startup, shutdown, maintenance and control. When UOP process consultants studied this refinery, they recommended adding four heat exchangers to recover more heat from the process and also generate steam. This scheme reduced the product rundown temperature by 107°C and the temperature to the products condenser by 150°C which reduced the amount of heat lost in the fin fans. The capital cost for this project was $3 million but resulted in energy savings of $4.5 million per year.
Projects to improve process unit heat recovery can typically improve energy efficiency by 4-8%. The CO2 reduction for a typical 100,000 BPSD refinery that results from these projects is 48 to 96 MT/year. |
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