Vacuum powered addition system
First Claim
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1. A method for adding material to an FCC unit, comprising:
- providing a first vessel under low pressure containing a first material;
moving the material through a first eductor to the FCC unit; and
determining an amount of material moved from the vessel through the eductor.
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Abstract
A method for adding material to an FCC unit is provided. In one embodiment, a method for adding material to an FCC unit includes providing a first vessel under low pressure containing a first material, moving the material through a first eductor to the FCC unit, and determining an amount of material moved dispensed from the vessel through the eductor.
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Citations
20 Claims
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1. A method for adding material to an FCC unit, comprising:
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providing a first vessel under low pressure containing a first material; moving the material through a first eductor to the FCC unit; and determining an amount of material moved from the vessel through the eductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for adding material to an FCC unit, comprising:
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providing a plurality of vessels maintained at low or atmospheric pressure coupled to a selection system; actuating the selection system to selectively couple one of the plurality of vessels to the FCC unit; and activating an eductor to pull material from the selected vessel through the eductor to the FCC unit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for adding material to an FCC unit, comprising:
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selectively coupling one or more of a plurality of vessels maintained at or near atmospheric pressure to one or more eductors; transferring additives from the selected vessel or vessels to the FCC through the one or more eductors; and determining an amount of additives transferred by a change in weight of the vessel.
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Specification