The 5 million-ton atmospheric-pressure distillation unit at Lanzhou Petrochemical Refinery has successfully implemented pinch technology to optimize the crude oil heat exchange network. This advanced approach not only enhances the terminal temperature of the crude oil in the heat exchanger but also allows for the effective utilization of low-temperature residual heat. By redirecting this waste heat to the power plant’s water treatment system, the refinery is now able to preheat raw water, significantly improving energy efficiency and reducing overall energy consumption. This innovative application of pinch technology demonstrates how modern engineering can turn waste into value, promoting sustainable operations and contributing to environmental protection efforts.
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