Cracking furance having radiant heating tubes the inlet and outlet legs of which are paired within the firebox
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United States of America Patent
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Mar 4, 2003
Grant Date -
N/A
app pub date -
May 12, 1998
filing date -
May 13, 1997
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Abstract
The present invention provides a furnace and process that relies on a multiplicity of radiant heating tubes, each in the form of a U-shaped coil, that are mounted within a furnace firebox such that an inlet leg of any one of the plural tubes is immediately adjacent and spaced apart from an outlet leg of another one of the plural tubes within the firebox of a thermal cracking furnace. This spacial pairing of an inlet leg of one tube with an outlet leg of another tube of the plural radiant heating tubes of the cracking furnace maximizes utilization of the available radiant heat within the firebox of a thermal cracking furnace while reducing the likelihood of localized hot spotting that could produce coke-tar plugging of a tube.
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