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公开(公告)号：US3647677A
公开(公告)日：1972-03-07
申请号：US3647677D
申请日：1969-06-11
Applicant: STANDARD OIL CO
Inventor： WOLFF WILLIAM F , ROSSCUP ROBERT J , RIDGWAY JOHN A JR
CPC classification number: C10G75/04 , C10G7/10 , C10G9/16 , Y10S585/95
Abstract: THE FORMATION OF COKE IN HIGH-TEMPERATURE PETROLEUM TREATMENTS IS RETARDED BY ADDING TO THE OIL A COKE-RETARDING AMOUNT OF A COKE RETARDER SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL PHOSPHOROUS AND COMPOUNDS THEREOF. VERY SMALL AMOUNTS OF THESE COKE RETARDERS ARE EFFECTIVE, WHILE THEY GENERALLY BECOME INEFFECTIVE ABOVE ABOUT 0.5%, BASED ON THE WEIGHT OF THE OIL.
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