Developed by the Institute of Engineering Thermophysics, Chinese Academy of Sciences (CAS), CGAS Circulating Fluidized Bed Coal Gasification is a high-efficiency, clean coal conversion solution with over a decade of R&D. Its industrialization was supported under the CAS "Hongguang Special Project" for key technology transfer.
As the industrialization platform, CAS Hefei Coal Gasification Technology Co., Ltd. provides coal gasification systems leveraging CGAS technology. Key breakthroughs include:
· High carbon/energy circulation via CFB-enhanced loops
· Efficient, low-cost conversion under mild conditions
· Flexible gasification agents:
☆Air/Pure O₂/O₂-enriched air → Industrial fuel gas
☆ O₂-enriched/pure O₂ → Syngas/H₂
As a key energy source for industrial kilns (non-ferrous metallurgy, building materials, glass, ceramics), fuel gas constitutes a major production cost component. CGAS technology reduces gas production costs by enabling low-rank coal utilization - cutting raw material expenses by 40-60% versus conventional fixed-bed systems.
Cost Advantages
• Feedstock Flexibility: Uses <600 RMB/ton low-rank/high-ash coals vs. >1200 RMB/ton lump coal in fixed-bed
• Process Savings: Eliminates tar/phenol water treatment costs
Scalability: Compact footprint for high-capacity plants
Automation: Reduced labor requirements
Precision Control: Adjustable gas calorific value (1,100-2,200 kcal/kg) via oxygen modulation
Eco-Friendly: No tar/phenol byproducts
Technical Comparison
CGAS Oxygen-Enriched/Pure Oxygen Gasification Technology is ideal for cost-effective syngas/hydrogen production to manufacture clean chemical feedstocks (ammonia, methanol, ethanol). Particularly suited for small/medium coal chemical enterprises seeking to upgrade from outdated fixed-bed gasifiers.
Wide Feedstock Adaptability 
Low Gas Production Cost 
High Energy Efficiency 
Proven Reliability 
Operational Flexibility 
Low Emissions 
