Delayed coking of pyrolysis fuel oils
Abstract
Abstract OPTIONALLY, A QUENCH SYSTEM MAY BE EMPLOYED IN THE VAPOR LINE LEAVING THE COKE DRUM, PARTICULARLY WHERE A HIGHLY REACTIVE FEEDSTOCK IS USED, TO PREVENT VAPOR PHASE COKING. PROCESS FOR DELAYED COKING OF PYROLYSIS FUEL OIL WHEREIN THE OPERATION INCLUDES THE FOLLOWING STEPS, ALONG OR IN COMBINATION: (A) ADDITION OF SULFUR INTO THE PYROLYSIS FUEL OIL PRIOR TO INTRODUCTION INTO A SOAKING TANK, (B) MAINTENANCE OF THE PYROLYSIS FUEL OIL AT ABOVE 450* F. FOR AT LEAST 5 MINUTES IN THE SOAKING TANK BEFORE IT IS PASSED TO THE COKING HEATER, AND (C) OPERATION OF THE HEATER COIL OUTLET AND THE COKE DRUM AT A PRESSURE OF NOT LESS THAN 40 P.S.I.G. THE USE OF THE ABOVE STEPS IN THE DELAYED COKING PROCESS AVOIDS THE FORMATION OF PLUGS IN THE SYSTEM AND FACILITATES THE PREPARATION OF HIGH QUALITY COKES FROM PYROLYSIS FUEL OILS.
Inventors
- 👤 Morgan C Sze
- 👤 Harold Unger
- 👤 Thomas M Bennett
Bibliographic Details
Claims Analysis
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