VPSA Oxygen Generation
Gas Separation
Hydrogen Energy
Green & Energy-Efficient
Oxy-Fuel Combustion Technology
Ozone Generation
Equipment Leasing & Operation Services
Resource Utilization of Industrial Exhaust Gas
Blast furnace gas (BFG) and basic oxygen furnace gas (BOFG) are important secondary energy sources in long-process steel production,with their combustible content:
BFG contains CO (20–25%) and CO2(18–22%), accounting for40–50% by volume.
BOFG contains CO (60–70%) and CO2(3–8%), with total combustible components at 65–75%.
Systematic optimization of CO utilization efficiency in these gases helps optimize a steel plant's carbon emission intensity.
By applying Pressure Swing Adsorption (PSA) technology to enrich CO concentration to>80% and recycling it back into the blast furnace,part of fossil fuel consumption can be replaced. When coupled with amine-based or calcium-looping CO2 capture technologies, under design target conditions, the capture cost can be controlled at 200–300 RMB per ton.
By adopting advanced adsorption separation technology,CO/N2 separation can be achieved even under high-N2 atmospheres (60–80%). The purification cost is controlled at 0.8–1.2 RMB/Nm3,optimized compared to conventional processes
The removal of CO2 (15–25%) from steel mill gases can be deeply integrated with carbon capture systems to generate high-concentration CO2 streams (>90%). This controls the overall capture cost at 200–300 RMB per ton of CO2
Through multi-process collaborative optimization, the comprehensive energy consumption for CO2 capture can be reduced to below 1.8 GJ/t . When integrated with steel mill gas CO enrichment systems,it helps reduce energy consumption
After purification, ineffective components such as CO2 can be removed at rates of 85–95%, increasing the effective components (CO + H2) concentration by 15–25%. As a result, the gas heating value improves by 20–30%, reaching 1,800–2,200 kcal/Nm³
