PSA Nitrogen Generator, Nitrogen Gas Plant, Nitrogen
Gaztron Engineering is a leading designing, manufacturing and supplying PSA Nitrogen gas generator. Nitrogen is widely used in Pre-commissioning and commissioning activities like Nitrogen Pigging, Nitrogen Purging, Nitrogen drying and Nitrogen pressure testing of pipelines in oil and gas fields. Used for both onshore and offshore applications Nitrogen Inert gas can be produced onsite very economically.
In the past, pipeline construction companies generally built pipelines and pipeline service companies provided the cleaning, testing, dewatering, drying, inspection, and coating services. Now those services are provided by either the service companies or the construction companies themselves.
Pipeline projects can have a long sales cycle and may be delayed or even cancelled due to permitting, weather or construction delays. I will not go into detail on explaining the pipeline construction cycle and will jump directly to the 3 most common applications that typically happen during pre-commissioning, inspection and maintenance.
Dewatering process consists in removing large portions of water out of the pipeline. Usually a pig is sent through the pipeline driven by air to push the water out. High pressure compressors, boosters and related equipment need to be used. The maximum dewatering speed is defined by the customer and in many cases the customer collects the water for environmental reasons.
Usually after dewatering a pipeline, water still remains in the pipes. Dry air goes under pressure into the pipes to absorb the remaining water in the pipeline. Compressors and dryers with pressure dew points down to –40 degrees F or even lower are usually provided to insure the shortest possible drying time.
Purging and inerting procedures are usually done in new natural gas pipelines. Nitrogen enters the pipeline by injection and the pipes are then safely purged of air. These procedures are essential. Not only do they displace the oxygen, but they also delay oxidation and avoid explosions by not allowing air and natural gas to mix in dangerous concentrations. Nitrogen generators with different flows and purities are matched with compressors and boosters to reach the desired Nitrogen pressure and flow.