Biogas Purification & Liquefaction Plant

Unit capacity

Biogas (50% CH₄): 320 Sm3/h
Biomethane: 160 Sm3/h
BioLNG: 110 kg/h 2.65 TPD

The NANO Biogas Purification & Liquefaction Plant is a modular, ready-to-install full-cycle system capable of converting biogas from anaerobic digestion facilities into high-quality BioLNG. This eco-friendly, cost-effective, and reliable solution is designed for small and medium-sized biogas enterprises, offering a unique modular design for easy integration, even on limited production sites.

PROCESS #1: Processing biogas into high-purity biomethane

Removal of all components H₂S, VOCs, CO₂ & H₂O from biogas to obtain highly purified biomethane (LNG spec).

M0 - Frame
M1 - Biogas desulfurization and pre-compression
M2 - Amine gas treating
M3 - Compression and dehydration of biomethane

PROCESS #2: Biomethane liquefaction

The biomethane is liquefied in a Brazed Aluminum Heat Exchanger using a Reverse Brayton Cycle in which dry air is compressed and expanded down to -165°C.

M5 - Biomethane liquefier

PROCESS #3: Central services

The biomethane is liquefied in a Brazed Aluminum Heat Exchanger using a Reverse Brayton Cycle in which dry air is compressed and expanded down to -165°C.

M4 - Dry air generator
M6 – Industrial Chiller
M7 - Air Dry cooler (Adiabatic Cooler for hot country)
M8 - Power and control room

Modular Design

All stages of the process—gas purification, drying, and liquefaction—are integrated into eight compact modules assembled in a Plug & Play format.

Compact Size

All technological equipment is housed on a platform with dimensions of 14.0 m (length) x 2.9 m (width) x 9.5 m (height).

Operational Flexibility

The system is designed to handle biogas of various compositions, including gas with high CO₂ and H₂S content. It can also be customized to meet specific technical requirements.

High Automation

The fully automated system eliminates the need for constant operator presence, significantly reducing operational costs.

Eco-Friendliness

The plant employs an air-based cryogenic cycle, which is safe for the environment and free of chemical refrigerants

If you would like to learn more about the technology and its implementation at your location, please feel free to reach out to us.