Fog computing for raising delayed coker yields
AssigneeHoneywell International Inc.
InventorSoumendra Mohan Banerjee
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Abstract
A method of operating a refinery including at least one coke drum coupled to a coker fractionator. A pump characteristics curve is provided for a fractionator bottom pump coupled to the coker fractionator comprising a net positive suction head required (NPSHr) curve as a function of a pump flow rate. Fog computing utilizes the pump characteristics curve along with at least one sensed input parameter including a real-time value for the pump flow rate to control the fractionator bottom pump to dynamically control a column pressure (Pc) in the coker fractionator. A reduction in Pc is obtained that reduces an available NPSH (NPSHa) which lessens a difference between the NPSHa and the NPSHr.
Claims12
A method of operating a refinery including at least one coke drum coupled to a coker fractionator, comprising:
- providing a pump characteristics curve for a fractionator bottom pump coupled to said coker fractionator comprising a net positive suction head required (NPSHr) curve as a function of a pump flow rate for said fractionator bottom pump, and
- fog computing utilizing said pump characteristics curve along with at least one sensed input parameter including a real-time value for said pump flow rate to control said fractionator bottom pump to dynamically control a column pressure (Pc) in said coker fractionator,
- wherein a reduction in said Pc reduces an available NPSH (NPSHa) which lessens a difference between said NPSHa and said NPSHr.
A coker system, comprising:
- at least one coke drum coupled to a coker fractionator that are heated by a coker furnace, wherein said coker fractionator is pumped by a fractionator bottom pump;
- a fog computing block for providing fog computing utilizing a pump characteristics curve for said fractionator bottom pump comprising a net positive suction head required (NPSHr) curve as a function of a pump flow rate of said fractionator bottom pump along with at least one sensed input parameter including a real-time value for said pump flow rate to control said fractionator bottom pump to dynamically control a column pressure (Pc) in said coker fractionator,
- wherein a reduction in said Pc reduces an available NPSH (NPSHa) which lessens a difference between said NPSHa and said NPSHr.
Dependencies are inferred from the claim text.