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Desulfurization of petroleum coke

阅读:892发布:2022-07-26

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1. THE METHOD OF REDUCING THE SULFUR CONTENT OF RAW PETROLEUM COKE CONTAINING 3 TO 6 WEIGHT PER CENT SULFUR AND PREPARED BY HEATING SULFUR-CONTENT RESIDUAL PETROLEUM OIL AT A COKING TEMPERATURE OF UP TO 1800* F., WHICH COMPRISES INTRODUCING THE RAW COKE INTO A TERMINAL PART OF AN ELONGATED DESULFURIZING ZONE MAINTAINED AT A DESULFURIZING TEMPERATURE IN THE RANGE BETWEEN ABOUT 2500* AND 3200* F., ALSO FEEDING AN OXYGEN-CONTAINING GAS DIRECTLY INTO THE TERMINAL PART OF THE DESULFURIZING ZONE WHICH CONTAINS THE FRESHLY INTRODUCED COKE, WHEREBY THE FRESH COKE FEED IS RAPIDLY HEATED TO THE SAID DESULFURIZING TEMPERATURE, PASSING THE COKE THROUGH THE DESULFURIZING ZONE, MAINTAINING THE COKE AT THE DESULFURIZING TEMPERATURE FOR A PERIOD BETWEEN ABOUT 1/4 AND 8 HOURS UNTIL THE CONTENT OF THE COKE IS REDUCED BELOW 2 WEIGHT PER CENT, AND WITHDRAWING A SULFUR-CONTAINING GAS AND DESULFURIZED COKE FROM THE DESULFURIZING ZONE.
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