| http://www.w3.org/ns/prov#value | - This cools the combustion products before they enter the treating section which removes the sulfur compounds produced by partial oxidation of the coke in the spent catalyst so that the sulfur-free low BTU gas containing mainly carbon monoxide, carbon dioxide and nitrogen can be discharged through line 25 through means to recover its heat of combustion as steam in boilers or in fired heaters.
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