Waste Heat Recovery in a Chemical Process and Plant, Particularly for the Synthesis of Ammonia
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Issued Date -
Jun 21, 2012
app pub date -
May 17, 2010
filing date -
Sep 3, 2009
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Abstract
A method for recovering waste heat in a process for the synthesis of a chemical product, particularly ammonia, where the product is used as the working fluid of a thermodynamic cycle; the waste heat is used to increase the enthalpy content of a high-pressure liquid stream of said product (11), delivered by a synthesis section (10), thus obtaining a vapour or supercritical product stream (20), and energy is recovered by expanding said vapour or supercritical stream across at least one suitable ex-pander (13); the method is particularly suited to recover the heat content of the syngas effluent after low-temperature shift.
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