摘要:
A process and apparatus for upgrading a petroleum charge of crude oil or residual fractions thereof to provide a product with substantially reduced heavy metals content and Conradson Carbon number. The charge is dispersed into a descending curtain of heated, substantially inert contact material. This contact material preferably has a conversion rate not substantially greater than 10% in the CAT D test. The vapors generated on contact of the charge with the curtain are collected immediately from the side of the curtain opposite from where the charge is dispersed. The collected vapors are cooled to avoid thermal cracking. The product is suitable for catalytic cracking or use as heavy fuel or heavy fuel precursor.
摘要:
The presently disclosed subject matter provides methods for producing olefins and/or aromatics from coker naphtha. In a non-limiting embodiment, a method for producing aromatics includes hydrogenating the coker naphtha stream in the presence of a first catalyst to remove diolefins and sulfur, if any, to obtain a hydrogenated stream and subjecting the hydrogenated stream to aromatization in the presence of a second catalyst to produce an aromatic-rich stream that includes benzene, toluene and xylene. In certain embodiments, a method for producing olefins includes hydrogenating the coker naphtha stream in the presence of a first catalyst to remove diolefins and sulfur, if any, to obtain a hydrogenated stream and subjecting the hydrogenated stream to catalytic cracking in the presence of a second catalyst to produce an olefin-rich stream that includes ethylene, propylene and aromatics.
摘要:
A fluid coking unit for converting a heavy oil feed to lower boiling products by thermal has a centrally-apertured annular baffle at the top of the stripping zone below the coking zone to inhibit recirculation of solid particles from the stripping zone to the coking zone. By inhibiting recirculation of the particles from the stripping zone to the coking zone, the temperatures of the two zones are effectively decoupled, enabling the coking zone to be run at a lower temperature than the stripping zone to increase the yield of liquid products.
摘要:
Die Erfindung bezieht sich auf einen Gaswandler für kohlenwasserstoffhaltige Schwelgase mit einer in einem gasdicht verschlossenen Gehäuse angeordneten Koksschüttung, einem Kokseinfüllschacht, einem Koksabzugsschacht, einem Spaltgasabzug und einer durch die Koksschüttung vom Spaltgasabzug getrennten Brennkammer (20) mit einem Brenner für die Schwelgase. Bei solchen Gaswandlern besteht das Problem, das sich verbrauchende Koksbett kontinuierlich zu erneuern und sowohl über den Querschnitt des Koksbettes hinweg aus auch während der Betriebsdauer konstante physikalische und chemische Zustandsdaten einzuhalten. Hierzu sieht die Erfindung vor, daß das Gehäuse (4) im wesentlichen senkrecht steht, sich im Bereich der Koksschüttung (23) trichterförmig verjüngt und die Brennkammermündung durch eine freie Böschung (22) der Koksschüttung gasdurchlässig abgeschlossen ist. Des weiteren kann die Brennkammer (20) im Bereich der Koksschüttung (23) in einer Seitenwand (12) des Gehäuses (4) eingelassen sein. Ein erfindungsgemäßer Gaswandler ist insbesondere für den Einsatz bei Verschwelungsanlagen geeignet.
摘要:
A fluid coking unit for converting a heavy oil feed to lower boiling products by thermal has a centrally-apertured annular baffle at the top of the stripping zone below the coking zone to inhibit recirculation of solid particles from the stripping zone to the coking zone. By inhibiting recirculation of the particles from the stripping zone to the coking zone, the temperatures of the two zones are effectively decoupled, enabling the coking zone to be run at a lower temperature than the stripping zone to increase the yield of liquid products.
摘要:
Process and apparatus for rapidly cracking a hydrocarbon feed followed by rapid separation of the cracked gases from the particulate solids including a cracking reactor having offset orifices and at least two opposed inlet nozzles in the same plane, an entrained bed heater having an array of fuel inlet nozzles in a plane at the bottom of the heater and axially directed air inlet nozzles, and a separator assembly for separating particulate solids from the gaseous products thus produced.