Is a binary distillation column limited by Carnot?

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SUMMARY

A distillation column operates similarly to a heat engine and is indeed limited by Carnot efficiency, which defines the maximum possible efficiency based on the temperature difference between the hot and cold sides. The discussion emphasizes that while the Carnot theorem applies universally to heat engines, real-world distillation columns rarely achieve efficiencies close to this theoretical limit. Understanding the relationship between the hot and cold side temperatures is crucial for determining the maximum efficiency of a distillation column.

PREREQUISITES
  • Carnot efficiency principles
  • Thermodynamics of heat engines
  • Distillation column operation
  • Heat transfer concepts
NEXT STEPS
  • Research the calculation of Carnot efficiency for various temperature ranges
  • Explore the design and optimization of distillation columns
  • Study real-world efficiency metrics of heat engines
  • Investigate the role of energy demixing in thermodynamic processes
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Chemical engineers, process engineers, and anyone involved in the design and optimization of distillation processes or heat engines.

ejnovek
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Hi Physics Forums,

I'm wondering if a distillation column is limited by the carnot efficiency and, if so, how this limitation can be used to determine the maximum efficiency of a distillation column with particular hot and cold side temperatures.

A distillation column has a hot and cold side and rejects heat. Additionally, the energy of demixing could be classified as 'work.' In this way it resembles a heat engine.
 
Science news on Phys.org
All heat engines are restricted to carnot efficiency.
The theorem is used the same way for all heat engines.
However, almost no heat engines have efficiencies close to the carnot efficiency.
 

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