Co2 recovery and liquefaction system for biogas upgrading
Maximize methane recovery while producing food-grade liquid CO2 in your biogas operation with a modular system that seamlessly integrates into existing processes, enhancing sustainability and reducing carbon emissions.

Liquefies and Purifies CO2 from Biogas
The Mini CO2 Liquefier from HoSt Group is a modular system designed for biogas plant operators and carbon capture facilities seeking to liquefy and purify CO2. This system leverages CO2 as a natural refrigerant, differentiating it from conventional options like Freon or Ammonia, thus enhancing environmental safety. It efficiently recovers over 99% of CO2, producing food-grade liquid CO2 for varied applications, including horticulture, food, and refrigeration industries. The system supports continuous, containerized operation, accommodating up to 600 kg/hr of CO2 with energy consumption between 0.20-0.22 kWh/kg. Its containerized design ensures seamless integration into existing operations, offering quick, plug-and-play installation. Additionally, it contributes to sustainability goals by utilizing renewable biogas sources and offers ease of maintenance through its automated features.
Benefits
- Ensures high CO2 purity, meeting food-grade standards for expanded market use.
- Minimizes environmental impact by using CO2 as a natural refrigerant.
- Reduces operational costs through efficient energy consumption of 0.20-0.22 kWh/kg.
- Facilitates quick and easy installation with modular, containerized design.
- Enhances sustainability by converting biogas emissions into valuable CO2 byproducts.
- Applications
- Bio-co2, Bio-lng, Methane recovery, Biogas upgrading, Refrigeration, Co2 purification, Biogas, Food industry, Bio-cng, Horticulture, Carbon capture
- End products
- Packaged bio-co2 for horticulture, Purified food-grade co2 containers, Methane extracted from biogas, Bio-lng cylinders, Refrigeration-grade co2, Bio-cng canisters, Bottled liquid co2 for food processing, Food-grade liquid co2
- Steps before
- Biogas upgrading, Carbon capture
- Steps after
- CO2 purification, CO2 liquefaction, Food-grade CO2 utilization, Horticulture application, Food industry application, Refrigeration industry application
- Input ingredients
- biogas, captured CO2
- Output ingredients
- liquid bio-CO2, food-grade CO2, reduced carbon emissions
- Market info
- HoSt is known for designing and manufacturing biogas plants, biomass energy systems, and waste-to-energy technologies. They have a strong reputation for sustainable energy solutions and innovation in renewable energy sectors.
- Capacity
- 300-6, 000 kg/hr
- Electrical Consumption
- 0.20-0.22 kWh/kg of liquid CO2
- CO2 Recovery Rate
- >99%
- CO2 Purity
- >99.99% (food-grade)
- Cooling Method
- CO2 as a refrigerant
- Footprint
- 40 ft. container + reboiler skid, varies with the scale
- Modularity
- Modular and containerized design
- Start-Up
- Quick start-up
- CO2 Recovery Efficiency
- >99%
- Electrical Consumption
- 0.20-0.22 kWh/kg of liquid CO2
- Operational Mode
- Continuous
- Cooling Method
- CO2 as Refrigerant
- Integration with Biogas Plant
- Enhances Methane Recovery
- CO2 Purity
- >99.99% (Food-grade)
- Biological compatibility
- Food-grade quality
- Corrosive resistance (e.g. acids)
- High resistance
- Density/particle size
- Suitable for liquid CO2
- Cooling with CO2 as a refrigerant
- Yes
- End-product
- Liquid bioCO2
- Machine footprint
- 40 ft. container + reboiler skid / 45 ft. container + reboiler skid / 40 ft. container + 20 ft. container + reboiler skid / 40 ft. container + 2 x 20 ft. / 40 ft. container + reboiler skid
- Container type
- Modular and containerized solution
- Capacity
- 300-600 kg/hr / 800-1, 200 kg/hr / 1, 500-4, 000 kg/hr / 4, 500-6, 000 kg/hr
- End-product
- Liquid bioCO2