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 production.

M⁰ – Frame

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).

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

General cooling system

Our biogas purification and liquefaction plants utilize an optimized cooling system tailored for efficient and reliable operation throughout the year.

Non-Critical Processes

Processes that do not require a constant temperature year-round are cooled by an Air Free Cooler water circuit, ensuring energy efficiency. This system maintains water temperatures approximately 8°C above ambient air temperature, making it ideal for cost-effective and eco-friendly operation.

Critical Processes

Processes requiring precise temperature control are managed using a Chiller water circuit, which maintains water temperatures at 10°C. This guarantees stable performance and eliminates process fluctuations, regardless of seasonal temperature variations, ensuring consistent operation in both summer and winter.

Our advanced cooling technology ensures optimal system performance, energy efficiency, and minimal environmental impact.