Food-Grade Liquid CO2 Recovery Plant
Zhejiang Jinhua Air Separation Equipment Co., Ltd. designs and manufactures skid-mounted CO2 recovery plants that turn raw CO2 source gas into ISBT food & beverage grade liquid CO2 with purity ≥ 99.9%. Backed by 25+ years of cryogenic equipment experience, every plant is engineered to the customer's feed gas and required output, starting from 50 Nm³/h.
CO2 Recovery Process
Raw CO2 source gas – fermentation off-gas, flue gas or natural CO2 well.
Scrubbing & compression – water wash, then two-stage oil-free compression.
Desulfurization – dedicated beds cut total sulfur below 0.1 ppm.
Purification & drying – activated carbon and molecular-sieve dryers.
Liquefaction – refrigeration cycle condenses CO2 to liquid.
Rectification – internal reflux, no auxiliary heat source or fuel.
LCO2 storage & filling – tank, pump and filling to ISBT ≥ 99.9%.
Why Choose Jinhua CO2 Recovery Plants
ISBT food-grade purity – CO2 ≥ 99.9%, meeting ISBT beverage-grade specification for carbonated soft drinks and brewing.
Ultra-low sulfur purification – total sulfur reduced to < 0.1 ppm through dedicated desulfurization and adsorption stages.
Energy-saving rectification – internal-reflux rectification, no extra fuel consumption required.
Skid-mounted compact design – everything except the storage tanks is packaged on skids for fast installation and a small footprint.
Automated, reliable control – PLC with DCS integration for unattended, stable round-the-clock operation.
Technical Parameters
Parameter | Specification |
CO2 purity | ≥ 99.9% (ISBT food grade) |
Total sulfur | < 0.1 ppm |
Moisture | ≤ 20 ppm |
Oxygen | ≤ 30 ppm |
NOx / hydrocarbons | Within ISBT limits |
Product state | Liquid CO2, -20 ~ -25 °C |
Product pressure | 1.6 – 2.1 MPa |
Plant capacity | Customized, from 50 Nm³/h |
Feed gas source | Fermentation off-gas, flue gas, natural CO2 well, etc. |
Configuration | Skid-mounted (except storage tank) |
Control system | PLC + DCS |
Operation | Continuous, 24 h/day |
Delivery | 5–10 months, depending on plant scale |
Customization | OEM/ODM – capacity, branding and color |
Capacity, utility consumption and layout are engineered per project – send us your source-gas analysis and required output for a tailored proposal.
Applications
Beverage carbonation – carbonated soft drinks and sparkling water, ISBT grade with no off-taste.
Brewing & distilling – tank purging, counter-pressure filling and beer carbonation.
Dry ice production – pellet and block dry ice for cold chain and blasting.
Welding & fabrication – shielding gas for MIG/MAG welding of steel structures.
Greenhouse dosing – CO2 enrichment that lifts crop yield in controlled-environment farms.
Oil & gas EOR – CO2 injection for enhanced oil recovery and well stimulation.
FAQ
Q: What CO2 purity can this plant achieve?
A: ≥ 99.9% (V/V), complying with the ISBT food & beverage grade standard.
Q: What feed gas is required?
A: Customized per customer – fermentation off-gas, flue gas, natural CO2 well, etc. A complete raw-gas analysis is required to finalize the design.
Q: What is the delivery time?
A: 5–10 months after the contract becomes effective, depending on plant scale.
Q: What are the payment terms?
A: 30% deposit, 70% before pick-up of goods (ex-works).
Q: Is installation support provided?
A: Yes – technology, instrumentation and compressor engineers can be dispatched on site.
Q: Can the plant be customized?
A: Yes – OEM/ODM service for capacity, branding and color per your request.
Let's Talk About Your CO2 Project
Send us your source-gas composition and required liquid CO2 output, and our engineers will prepare a tailored CO2 recovery solution for you.
