| 摘要 |
The coking tendencies of heavy hydrocarbon feedstocks are reduced by treatment with a free radical removing catalyst such as a transition metal naphthenate, preferably at temperatures below 350 DEG C. The treated product has improved stability as such and may be treated in subsequent processing operations such as catalytic cracking and thermal cracking, including visbreaking and coking, with improved liquid yield and reduced coke production.
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