Shell And Tube Heat Exchangers
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United States of America Patent
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Issued Date -
Nov 10, 2011
app pub date -
May 7, 2010
filing date -
May 7, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process for exchanging heat in a shell and tube gas-to-gas heat exchanger between a plurality of gases, said process comprising passing a cold first gas in parallel flow to a second hot gas to provide a warmer first gas; and passing said warmer first gas in counter-current flow to a hot third gas to provide a cooler said third gas. The invention provides increased minimum tube wall temperature within the exchanger for given process conditions while maintaining a high log mean temperature differential allowing for the prevention of corrosion from entrained corrosive vapours or entrained corrosive mist with a minimal increase in effective area.
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