Controlling thermal coking
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United States of America Patent
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Dec 29, 1998
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N/A
app pub date -
Apr 1, 1996
filing date -
Apr 1, 1996
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Abstract
The invention provides a method for controlling the relative proportion of products produced from a petroleum residuum by thermal coking. Coke yield promoting compounds are identified, and effective attenuating agents are specified. The method can mitigate a coke promoting effect induced by certain surfactants, antifoulants, or fugitive catalysts in thermal coking units. Mitigating the coke yield promoting effect of molybdenum, for example, in a thermal coker permits recovery of a greater proportion of distillate boiling range products.
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