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Manufacture of petroleum coke

阅读:76发布:2022-07-14

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1. THE PROCESS FOR THE PRODUCTION OF PETROLEUM COKE BY THE DELAYED COKING METHOD COMPRISING THE STEPS OF INTRODUCING A HEAVY PETROLEUM RESIDUUM INTO THE BOTTOM OF A COKING DRUM, SUBJECTING SAID RESIDUUM TO DELAYED COKING CONDITIONS OF TEMPERATURE AND PRESSURE TO THERMALLY DECOMPOSE SAID RESIDUUM TO PRODUCE A MASS OF SOLID RAW COKE FILLING THE COKING DRUM, REMOVING THE RAW COKE FROM THE DRUM, CALCINING SAID RAW COKE BY PASSING IT DOWNWARDLY THROUGH AN ELONGATED CALCINING ZONE MAINTAINED AT A TEMPERATURE OF ABOUT 1000*C. AT ONE END OF SAID ZONE AND ABOUT 1500*C. AT THE OTHER END OF SAID ZONE BY PASSING HOT GASES UPWARDLY THROUGH SAID ZONE COUNTERCURRENTLY TO SAID COKE, RECOVERING THE COKE FINES FROM THE GASES PASSING FROM THE CALCINING ZONE, FLUIDIZING THE COKE FINES RECOVERED FROM THE CALCINING ZONE, AND BURNING SAID FLUIDIZED COKE FINES IN SAID CALCINATION ZONE IN AN AMOUNT SUFFICIENT TO PROVIDE A MAJOR PORTION OF THE FUEL REQUIREMENTS TO THE CALCINING ZONE.
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