Abstract:
Material withdrawal apparatus and methods and systems of regulating material inventory in one or more units are provided. A material withdrawal apparatus includes a heat exchanger and a sensor. The heat exchanger includes a material inlet, material outlet, cooling fluid inlet, and cooling fluid outlet. The material inlet is coupled to the unit and the sensor is coupled to the heat exchanger to provide a metric indicative of the temperature at the material inlet; material outlet; cooling fluid inlet and cooling fluid outlet. Another embodiment of a material withdrawal apparatus includes a vessel having an outer wall, liner, fill port, and a discharge port. The liner at least partially covers the inner surface of the outer wall. The fill port and discharge port are defined in the vessel and the fill port is configured to receive withdrawn material from at least a unit. Other embodiments provide methods of withdrawing or regulating material in a unit.
Abstract:
Material delivery systems and methods are disclosed. Material delivery system includes delivery vessel, metering device, dispense mechanism, and mixer. The delivery vessel is configured to dispense material to a unit and metering device provides a metric indicative of the dispensed material to the unit. The dispense mechanism is configured to couple the delivery vessel to the unit. The mixer is coupled to the delivery vessel and configured to sufficiently mix the material with an activating agent. The method includes dispensing metered material from a dispense mechanism of a delivery vessel coupled to a mixer, wherein a metric is indicative of the dispensed material to the unit; sufficiently mixing the metered material with an activating agent in the mixer to activate the material, the mixer coupled to the unit; and delivering the activated material to the unit via the mixer. Systems and method also include providing material to plurality of units.
Abstract:
Catalyst withdrawal apparatuses and methods for regulating catalyst inventory in one or more units are provided. In one embodiment, a catalyst withdrawal apparatus for removing catalyst from a FCC unit includes a vessel coupled to a flow control circuit. Another embodiment of a catalyst withdrawal apparatus includes a vessel, a delivery line, and control valve. The control valve is configured to control the amount of gas to the delivery line and entrained with the catalyst. Another embodiment of catalyst withdrawal apparatus includes a vessel coupled to a heat exchanger. The heat exchanger includes a first conduit; a housing confining a coolant volume around a portion of the first conduit; and a sliding seal sealing the housing to the first conduit in manner that allows longitudinal expansion. A fluid catalyst cracking system coupled to a catalyst withdrawal apparatus and method for withdrawing catalyst from a unit are also disclosed.
Abstract:
A system and method for injecting catalyst into a fluid catalyst cracking (FCC) unit (202) is provided. In one embodiment, a system for injecting catalyst into a FCC unit includes at least one catalyst injection apparatus (206A) for providing catalyst to a fluid catalyst cracking unit (202), at least one sensor (224) adapted to provide a metric indicative of the composition of a product stream produced in the fluid catalyst cracking unit, and a controller (204) coupled to the sensor (224), for controlling the additions made by the catalyst injection system (206A) in response to the metric provided by the sensor (224). Another embodiment of the invention comprises a method for injecting catalyst from a catalyst injection system into a FCC unit that includes the steps of dispensing catalyst for a catalyst injection system into a fluid catalytic cracking unit, sensing an output in the fluid catalytic cracking unit, and automatically adjusting the amount of catalyst dispensed in response to the at least one sensed metric.
Abstract:
Material withdrawal apparatus, methods, and systems of regulating material inventory in one or more units are provided. A material withdrawal apparatus includes a heat exchanger and transport medium junction configured to provide transport medium to transport the withdrawn material from the unit to the heat exchanger. Another material withdrawal apparatus includes a heat exchanger and shock coolant junction configured to provide shock coolant to the material withdrawn from the unit. Another material withdrawal apparatus includes a heat exchanger, shock coolant junction, and transport medium junction. Another embodiment of a material withdrawal apparatus includes a vessel and shock coolant junction. Another material withdrawal apparatus includes a vessel and transport medium junction. The vessel includes a wall, liner with heat insulating refractory material, fill port, and a discharge port. Other embodiments provide methods of withdrawing or regulating material in a unit and systems coupled to a material withdrawal apparatus.
Abstract:
A mobile fluid cracking catalyst injection system (200) and a method of controlling a fluid catalyst cracking process is provided. In one embodiment, a mobile fluid catalyst cracking system includes a transportable platform (212), a catalyst reservoir coupled to the platform and a flow control device coupled (206) to an outlet of the reservoir and adapted to control the flow of catalyst from the reservoir to a fluid catalyst cracking unit (FCCU).
Abstract:
A method and apparatus for metering catalyst in a fluid catalytic cracking catalyst injection system (402) are provided. In one embodiment, apparatus for metering catalyst (408) in a fluid catalytic cracking catalyst injection system (402) includes a low pressure storage vessel (440) coupled to a pressure vessel (420) that defines a high pressure side of the apparatus, where the determination of the amount of catalyst transferred is made on the low pressure side of the apparatus.
Abstract:
A method and apparatus for metering catalyst in a fluid catalytic cracking catalyst injection system (402) are provided. In one embodiment, apparatus for metering catalyst (408) in a fluid catalytic cracking catalyst injection system (402) includes a low pressure storage vessel (440) coupled to a pressure vessel (420) that defines a high pressure side of the apparatus, where the determination of the amount of catalyst transferred is made on the low pressure side of the apparatus.
Abstract:
Material delivery systems and methods are disclosed. A material delivery system includes a delivery vessel and at least one dispense mechanism outlet. The delivery vessel is configured to deliver material to at least one unit, with the proviso that when the unit is an FCC unit, the unit includes a plurality of units. The at least one dispense mechanism outlet is configured to couple the delivery vessel to the at least one unit. A method includes providing a material to at least one unit. The method includes dispensing material from a delivery vessel, wherein a metering device provides a metric indicative of the dispensed material with respect to at least a unit, and delivering the metered material to at least one unit via at least one dispense mechanism outlet of the delivery vessel coupled to the at least one unit. Another method includes providing a material to a plurality of units.
Abstract:
The invention is a multi-catalyst injection system (106). In one embodiment, the system (106) comprises a vessel (110) suitable for storing fluid cracking catalyst and having a separator (101) defining at least two compartments (102a and 103b) within the vessel (110). A plenum (105) is defined in the vessel (110) and is fluidly coupled to each of the compartments (103a and 103b). A plurality of dispense mechanisms (140) are respectively coupled to a respective compartment (103a and 103b) to control the flow of catalyst from the injection system.