Vacuum powered addition system
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.
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.
2. The method of claim 1 further comprising:
reading information associated with the vessel; and
updating information associated with the vessel after determining the amount of material dispensed through the eductor.
3. The method of claim 1 further comprising:
reading information associated with the vessel;
checking the read information associated with the vessel against a predefined criteria; and
setting a flag in response to the checked information.
4. The method of claim 1 further comprising:
checking a pressure downstream of the eductor; and
opening a valve to allow material to through the eductor in response to the checked pressure.
5. The method of claim 1 further comprising:
moving the material from an outlet of the first eductor through a second eductor.
6. The method of claim 1 further comprising:
providing a second vessel under low pressure containing a second material, the second vessel selectively coupled to the eductor;
coupling either the first or second vessel to the eductor in response to a signal; and
moving material from the selected vessel through the first eductor to the FCC unit.
7. The method of claim 1 , wherein determining further comprises,
detecting a change in volume of material within the vessel or a change in flow rate of material exiting the vessel.
8. The method of claim 1 , wherein determining further comprises,
detecting change in weight of the vessel.
9. The method of claim 1 , wherein the material further comprises at least one member selected from the group consisting of Y-Zeolite containing catalyst, ZSM-5 containing catalyst, SOx reduction catalyst, catalyst fines and NOx reduction catalyst.
10. A method for adding material to an FCC unit, comprising:
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.
11. The method of claim 10 further comprising:
determining a change in weight of the selected vessel; and
deactivating the eductor to stop of the flow of material to the FCC unit in response to the change in weight.
12. The method of claim 10 further comprising:
deactivating the eductor to stop of the flow of material to the FCC unit; and
determining a change in weight of the selected vessel.
13. The method of claim 10 further comprising:
actuating the selection system to selectively couple a second vessel of the plurality of vessels to the FCC unit; and
activating the eductor to pull material from the selected vessel through the eductor to the FCC unit.
14. The method of claim 10 further comprising:
actuating the selection system to selectively couple a second vessel of the plurality of vessels to the FCC unit; and
activating a second eductor to pull material from the selected vessel through second eductor to the FCC unit.
15. The method of claim 10 further comprising:
moving the material from an outlet of the first eductor through a second eductor.
16. The method of claim 10 further comprising:
disconnecting one of the plurality of vessels from the selection system;
replacing the disconnected vessel with a new vessel; and
connecting the new vessel to the selection system.
17. The method of claim 16 , wherein the new vessel is a shipping tote.
18. The method of claim 10 , wherein the material further comprises at least one member selected from the group consisting of Y-Zeolite containing catalyst, ZSM-5 containing catalyst, SOx reduction catalyst, catalyst fines and NOx reduction catalyst.
19. The method of claim 10 further comprising:
filling at least one of the plurality of vessels with fines recovered from the FCC unit.
20. A method for adding material to an FCC unit, comprising:
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.