System and process for injecting catalyst and/or additives into a fluidized catalytic cracking unit
AssigneeW. R. Grace & Co.-Conn.
InventorLenny Lee Albin
Life of this patent
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Abstract
A preferred embodiment of a system for loading catalyst and/or additives into a fluidized catalytic cracking unit includes a bin for storing at least one of the catalyst and/or additives, and a loading unit in fluid communication with the storage bin and the fluidized catalytic cracking unit on a selective basis. The loading unit is capable of being evacuated so that a resulting vacuum within the loading unit draws the catalyst and/or additive from the bin. The loading unit is also capable of being pressurized so that the catalyst and/or additive is transferred from the loading unit to the fluidized catalytic cracking unit.
Claims9
A process for introducing catalyst and/or additives into a fluidized catalytic cracking unit, comprising:
- generating a vacuum within a loading unit;
- drawing one of the catalyst and/or additives from a storage bin and into the loading unit in response to the vacuum wherein drawing one of the catalyst and/or additives from a storage bin and into the loading unit in response to the vacuum comprises opening a valve to place the storage bin in fluid communication with the loading unit;
- drawing another catalyst and/or additive from another storage bin and into the loading unit in response to the vacuum by opening another valve to place the another storage bin in fluid communication with the loading unit;
- monitoring the weight of the catalyst and/or additives drawn into the loading unit and stopping generation of the vacuum when the weight reaches a predetermined value;
- pressurizing the loading unit;
- and
- injecting the catalyst and/or additives into the fluidized catalytic cracking unit in response to the pressurization of the loading unit.
A process for introducing at least two catalysts and/or additives into a fluidized catalytic cracking unit, each of said at least two catalysts and/or additives being stored in separate storage bins, the process comprising:
- generating a vacuum within a loading unit;
- opening a first valve to place a first storage bin holding one of the at least two catalysts and/or additives in fluid communication with the loading unit to draw the catalyst or additive from the first storage bin and into the loading unit in response to the vacuum;
- opening a second valve to place a second storage bin holding at least one other catalyst or additive in fluid communication with the loading unit to draw the catalyst or additive from the second storage bin and into the loading unit in response to the vacuum;
- pressurizing the loading unit;
- and
- injecting the catalyst and/or additive from the loading unit into the fluidized catalytic cracking unit in response to the pressurization of the loading unit.
Dependencies are inferred from the claim text.