Nitrogen is the most common impurity found in landfills, with inlet concentrations ranging between 3-15%. Air ingress is a major source of nitrogen in landfill gas (LFG), which lowers the BTU value of natural gas and makes nitrogen removal or treatment crucial. The typical pipeline specification for nitrogen is less than 2%. Several methods exist for treating nitrogen, one of which is cryogenic distillation.
BCCK’s patented Nitrogen Rejection Unit (NRU), known as NiTech, offers low OPEX and high methane recovery, making it an ideal solution for your project.
BCCK’s NiTech NRU eliminates the need for cryogenic rotating equipment, significantly reducing OPEX and maintenance requirements. The process is heat-integrated and auto-refrigerated, ensuring no external or auxiliary refrigerant is needed, thus eliminating the need for a utility.
NiTech NRU
- Cryogenic Distillation based
- Any inlet Nitrogen concentrations
- Outlet nitrogen concentration as low as .5%
- 3,000 SCFM inlet flow minimum
- Greater than 99% recovery
- Low OPEX
- Options available for < 10 ppmv methane in the Nitrogen vent