DISCHARGE AND TRANSPORT METHOD FOR FLUIDIZED PARTICLES

PROBLEM TO BE SOLVED: To provide a discharge and transport method whereby the amount of fluidized particles discharged from a concentrated fluidized bed and the fluctuation of particle transport by a riser are decreased, enabling a stable uniform transportation. SOLUTION: In a method for upwardly di...

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Hauptverfasser:	FUJIYAMA YUICHIRO, IKEDA YONEICHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CONVEYING CRACKING HYDROCARBON OILS FUELS HANDLING THIN OR FILAMENTARY MATERIAL INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LUBRICANTS MEASURING METALLURGY MINERAL WAXES PACKING PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PNEUMATIC TUBE CONVEYORS PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA SHOP CONVEYOR SYSTEMS STORING TECHNICAL GASES CONTAINING CARBON MONOXIDE TESTING THEIR RELEVANT APPARATUS TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a discharge and transport method whereby the amount of fluidized particles discharged from a concentrated fluidized bed and the fluctuation of particle transport by a riser are decreased, enabling a stable uniform transportation. SOLUTION: In a method for upwardly discharging and transporting fluidized particles from a concentrated fluidized bed 1 to a riser section 5 which is a high-speed transport layer having particle size smaller than that of the concentrated fluidized bed, at least one intermediate tube section 3 is inserted into between the concentrated fluidized bed and the high-speed transport layer, thus enabling fluidized particles to be stably discharged and transported. When this method is applied to a circulating fluidized bed system, such as a downer- type FCC (a downflow-type fluidized catalytic cracking process), the operation is stabilized and the reaction performance can be improved by the sufficient progress of regeneration or decomposition reaction.