Fluid purging system
AssigneeCNX Resources Corporation
InventorsBrian Green, Joseph M. Fink, Nathan Horne, Matthew Imrich
Life of this patent
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Abstract
A method for reducing emissions from a vessel includes isolating the vessel from a downstream fluid flow line, purging a fluid from the vessel by injecting purging media into the vessel to push the fluid through a check valve of a vent tubing and into the downstream fluid flow line, and draining the purging media from the vessel. A first end of the vent tubing is coupled to the housing of the vessel, and a second end of the vent tubing is coupled to the downstream fluid flow line. Further, the vent tubing includes a check valve disposed between the first end and the second end, and the check valve is configured to allow fluid to flow from the housing to the downstream fluid flow line.
Claims16
A system, comprising:
- a vessel, wherein the vessel comprises:
- a housing;
- an isolation valve, wherein the isolation valve is coupled to the housing, and wherein the isolation valve is configured to be coupled to a downstream fluid flow line;
- a vent tubing, wherein a first end of the vent tubing is coupled to the housing and a second end of the vent tubing is configured to be coupled to the downstream fluid flow line, wherein the vent tubing includes a check valve disposed between the first end of the vent tubing and the second end of the vent tubing, and wherein the check valve is configured to allow a fluid to flow from the housing to the downstream fluid flow line;
- and
- an inlet and drainage valve, wherein the inlet and drainage valve is coupled to the housing;
- a purging media tank;
- and
- a first pump, wherein the first pump is coupled to the purging media tank and configured to be coupled to the inlet and drainage valve, and wherein the first pump is configured to pump a purging media between the purging media tank and the housing.
A method for reducing emissions from a pig launcher/receiver, comprising:
- passing a pig through a mainline valve of the pig launcher/receiver, wherein the mainline valve is coupled between the pig launcher/receiver and a pipeline;
- isolating the pig launcher/receiver from the pipeline;
- purging a pipeline fluid from the pig launcher/receiver, wherein purging the pipeline fluid from the pig launcher/receiver comprises:
- injecting a purging media into the pig launcher/receiver to push the pipeline fluid through a check valve and into the pipeline, wherein the check valve is coupled between the pig launcher/receiver and the pipeline;
- and
- draining the purging media from the pig launcher/receiver.
A system, comprising:
- a pig launcher/receiver, wherein the pig launcher/receiver comprises:
- a housing, wherein the housing is configured to receive a pig from a pipeline or insert the pig into the pipeline;
- an isolation valve, wherein the isolation valve is coupled to the housing, and wherein the isolation valve is configured to be coupled to the pipeline;
- a mainline valve, wherein the mainline valve is coupled to the housing, and wherein the mainline valve is configured to be coupled to the pipeline;
- a vent tubing, wherein a first end of the vent tubing is coupled to the housing and a second end of the vent tubing is configured to be coupled to the pipeline, wherein the vent tubing includes a check valve disposed between the first end of the vent tubing and the second end of the vent tubing, and wherein the check valve is configured to allow a pipeline fluid to flow from the housing to the pipeline;
- and
- an inlet and drainage valve, wherein the inlet and drainage valve is coupled to the housing;
- a purging media tank;
- and
- a first pump, wherein the first pump is coupled to the purging media tank and configured to be coupled to the inlet and drainage valve, and wherein the first pump is configured to pump a purging media between the purging media tank and the housing.
Dependencies are inferred from the claim text.