Purification Plant (CH4, CO2)
Technical Specification
| Parameter | Specification |
|---|---|
| Feedstock | CO₂ (captured) + H₂ (from electrolysis) |
| Main Reaction | CO₂ + 3H₂ → CH₃OH + H₂O |
| Operating Pressure | 50 – 100 bar |
| Operating Temperature | 200 – 280°C |
| Catalyst | Cu/ZnO/Al₂O₃ (fixed bed) |
| Methanol Purity | 99.99% (customized for high purity) |
| CO₂ Conversion (per pass) | 15 – 25% (with gas recycle, 85–95%) |
| H₂:CO₂ Feed Ratio | 3:1 |
Appliction
- Fuel
- Chemical feedstock
- Hydrogen carrier
- Carbon recycling
Process Description
The Green Methanol Production Plant utilizes an advanced catalytic synthesis process to produce methanol from renewable hydrogen and captured carbon dioxide. The process begins with the purification and compression of two primary feedstock’s:
Green Hydrogen (H₂) – Sourced from electrolysis powered by renewable energy. Carbon Dioxide (CO₂) – Captured from industrial emissions.
These feedstock’s are mixed in a stoichiometric ratio and fed into a catalytic reactor, where they undergo hydrogenation at elevated temperatures (200–280°C) and pressures (50–100 bar) over a copper-zinc oxide or copper-zinc- alumina catalyst. The reaction is represented as:
CO₂ + 3H₂ → CH₃OH + H₂O
The reactor output is cooled to separate crude methanol from unreacted gases and water. The crude methanol is purified through a multi-column distillation system to achieve fuel-grade purity (>99.99%). Unreacted gases are recycled to improve carbon efficiency.
