US 11,920,784 B2 · Total flare gas recovery system

Abstract

Flare gas is recovered by varying a number of ejector legs that depends on a flare gas flowrate. The ejector legs include ejectors piped in parallel, each ejector has a flare gas inlet and a motive fluid inlet. Flare gas and motive fluid is provided to ejectors by selectively opening or closing valves. The number of ejector legs online is varied to accommodate the amount of flare gas. The controller is also programmed to direct signals to actuators attached to the valves to open or close the valves, or to change the capacity of the ejector legs so they can handle changing flowrates of the flare gas. Included is a flare gas storage system with vessels made with flexible material, when flare gas is evacuated from the vessels, pressure in the vessels is maintained by compressing the vessels with an external force.

Claims10

Dependent claims

A processing facility comprising:

a source of flare gas;
a flare gas recovery system;
and
a flare gas storage system made up of flare gas storage units that each comprise,
a vessel comprising, a resilient member, an outer shell made from a flexible material that is supported on the resilient member, and
a pressure system that is selectively changeable between an extended configuration and a retracted configuration, and when in the extended configuration the vessel is in a compressed configuration,
wherein the resilient member expands from the compressed configuration to a free configuration when the pressure system is in the retracted configuration, and wherein the vessel comprises lateral sidewalls that are undulated when in the compressed configuration, and wherein the lateral sidewalls are generally linear and without undulations when ion the free configuration.

4 more elements

Dependencies are inferred from the claim text.

Total flare gas recovery system

Life of this patent

Total flare gas recovery system

Life of this patent

Abstract

Claims10