Catalyst injection system with pressure control
First Claim
1. A fluid catalytic injection system comprising:
- a vessel configured to store one or more catalysts;
a pressure transmitter configured to provide a metric of pressure within the vessel;
a pressure control valve coupled to the vessel for regulating gas pressure therein;
a discharge valve coupled to the vessel for controlling a discharge of catalyst from the vessel; and
a controller having the metric provided by the transmitter as an input, the controller containing instructions, that when executed, prevents the pressure control valve and the discharge valve from simultaneously being in an open state.
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Accused Products
Abstract
The invention is a catalyst injection system and method for injecting catalyst. In one embodiment, a fluid catalytic injection system includes vessel configured to store one or more catalysts, a pressure transmitter, a pressure control valve, a discharge valve, and a controller. The pressure control valve is coupled to the vessel and regulates the gas pressure therein. The discharge valve is coupled to the vessel and controls a discharge of catalyst from the vessel. The pressure transmitter provides a metric of pressure to the controller as an input. The controller contains instructions, that when executed, prevents the simultaneous opening of the pressure control valve and the discharge valve. In another embodiment, a method for injecting catalyst into a fluid catalytic cracking unit is provided. The method includes regulating pressure within a catalyst storage vessel, changing an amount of catalyst in the storage vessel, and preventing a simultaneous occurrence of the regulating and changing steps.
20 Citations
38 Claims
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1. A fluid catalytic injection system comprising:
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a vessel configured to store one or more catalysts; a pressure transmitter configured to provide a metric of pressure within the vessel; a pressure control valve coupled to the vessel for regulating gas pressure therein; a discharge valve coupled to the vessel for controlling a discharge of catalyst from the vessel; and a controller having the metric provided by the transmitter as an input, the controller containing instructions, that when executed, prevents the pressure control valve and the discharge valve from simultaneously being in an open state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A catalyst injection system comprising:
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a vessel suitable for storing fluid cracking catalyst; a separator disposed in the vessel and defining at least two compartments within the vessel; a pressure transmitter configured to provide a metric of pressure within the vessel; and a plurality of dispense mechanisms, a respective one of the dispense mechanisms coupled to a respective compartment. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A fluid catalytic cracking system comprising:
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a fluid catalytic cracking unit; a catalyst injection vessel coupled to the fluid catalytic cracking unit; a pressure regulation system coupled to the vessel for regulating pressure within the vessel; a discharge control mechanism for selectively allowing catalyst to exit the vessel; and a controller coupled to the pressure regulation system and the discharge control mechanism, the controller containing instructions, that when executed, prevent simultaneous pressurization of the vessel by the pressure regulation system and discharge of catalyst from the vessel by the discharge control mechanism. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for injecting catalyst into a fluid catalytic cracking unit, comprising:
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regulating pressure within a catalyst storage vessel with a pressure control valve; dispensing an amount of catalyst in the storage vessel with a discharging valve; and preventing the pressure control valve and the discharge valve from simultaneously being in an open state. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A fluid catalytic injection system comprising:
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a vessel; at least one separator disposed in the vessel and defining a plurality of fluidly isolated compartments therein; a plurality of discharged valves coupled to the vessel, each compartment having at least one discharged valve for controlling a discharge of catalyst from the vessel; a pressure control system coupled to the vessel and configured to independently control pressures within each of the compartments; a pressure transmitter configured to provide a metric of pressure within one compartment of the vessel; and a controller having a metric provided by the transmitter as an input, the controller containing instructions that, when executed, prevents simultaneous operation of the pressure control system while the discharge valve is in an open state.
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Specification