Nitrogen Rejection Units
Cryogenic nitrogen rejection offers the highest methane recovery rates. NRU solutions from 15MMSCFD to >900MMSCFD of feed gas. Inlet nitrogen concentrations from 1% to >70%.
Cryogenic nitrogen rejection offers the highest methane recovery rates. NRU solutions from 15MMSCFD to >900MMSCFD of feed gas. Inlet nitrogen concentrations from 1% to >70%.
A Chart integrated nitrogen rejection unit monetizes low btu gas reserves and provides increased revenue opportunities through the recovery of natural gas liquids (NGL) and helium and the off-take of LNG and liquid nitrogen.
Single low pressure column NRU
Single high pressure column NRU
Two (or more) Column NRU
Where inlet nitrogen concentrations are <40% and/or integrated helium recovery is required Chart’s patented and proven pre-fractionator nitrogen rejection technology is the optimum processing solution. The resultant two column design features a pre-fractionator followed by a low pressure NRU fractionator and offers the following:
Chart is responsible for around 25% of the world's installed NRU database and 50% of the world's name plate capacity.
Vertically integrated design and manufacture of integral Brazed Aluminum Heat Exchangers (BAHX).
Process design, detailing and shop fabrication of flange to flange cold box solutions.
Incorporating recovery of ethane, propane and heavier hydrocarbons results in significantly reduced equipment costs and lower energy consumption compared to independent nitrogen rejection and NGL recovery units.
Chart’s primary Cold Box fabrication location is a 40-acre coastal facility in New Iberia, Louisiana, USA, providing direct access to the US inter-coastal waterway and the Gulf of Mexico. This Nitrogen Rejection Unit (NRU) comprises dual cold boxes and processes 900 million scf/day of natural gas.
Nitrogen has no calorific value and its removal form natural gas is often required to meet product specifications. Cryogenic nitrogen rejection technology has the highest methane recovery rate and is standard practice for plants >15MMSCFD. As the nameplate capacity increases so do the economies of scale.
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Telephone +1 281 364 8700
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