PROCESS AND APPARATUS FOR COOLING CATALYST
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United States of America Patent
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Issued Date -
Jun 27, 2019
app pub date -
Dec 21, 2017
filing date -
Dec 21, 2017
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Abstract
A process and apparatus for cooling catalyst in a catalyst cooler is disclosed. Nested tubes in the catalyst cooler have an undulating wall for improving heat transfer from the catalyst bed across the wall to the water inside the tubes. The outer tubes have an end wall at an inlet end opposed to an outlet end of a respective inner tube. The helical wall improves the efficiency of heat transfer to increase cooler duty for heavy feed stocks.
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