Method for regulating particle transfer rates

A controlled method of changing the transport rate of particles between a source zone and a destination zone is disclosed. Changes are made in a desired value of the pressure difference of the conduit between the two zones through which the particles are transported. The changes are of a magnitude t...

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Bibliographische Detailangaben
Hauptverfasser:	RICHARDSON, LARRY D
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL 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 TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A controlled method of changing the transport rate of particles between a source zone and a destination zone is disclosed. Changes are made in a desired value of the pressure difference of the conduit between the two zones through which the particles are transported. The changes are of a magnitude that are determined by the batchwise transfer of particles into the source zone and are performed at a rate that is determined by the dynamics of the process, rather than by the frequency of the batchwise transfers, until the desired final value of the pressure difference is reached. The method minimizes fluctuations in the pressures of the two zones without over-sized vessels or additional equipment that would otherwise be needed to accommodate pressure changes. This results in a savings in construction costs. This invention is adaptable to a multitude of processes for the catalytic conversion of hydrocarbons in which deactivated catalyst particles are regenerated.