US 2019/0292469 A1 · FOG COMPUTING FOR RAISING DELAYED COKER YIELDS

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

Dependent claims

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.

Dependencies are inferred from the claim text.

Fog computing for raising delayed coker yields

Life of this patent

Fog computing for raising delayed coker yields

Life of this patent

Abstract

Claims12