PROCESS AND APPARATUS FOR COOLING A FLUE GAS STREAM FROM A REFORMER FURNACE
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
Mar 13, 2024
filing date -
Mar 13, 2023
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Abstract
The invention relates to a process and an apparatus for cooling a flue gas stream from a reformer furnace of a steam reformer for steam reforming a hydrocarbon containing feed stream with a reforming steam stream to produce a crude synthesis gas stream. According to the invention, the flue gases are cooled by heat exchange with air in a combustion air preheater which comprises at least two separate heat exchange zones, and the temperature of the flue gas stream passing the separate heat exchange zones decreases stepwise in flow direction of the flue gas stream.
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