Increasingly competitive, globalized markets. Continually rising energy costs. You can no longer afford to do things the way you always have. If you don’t improve – you won’t survive.
Your recovery boiler represents the single largest pulp mill investment. To maintain the profitability and competitiveness of your mill it is essential to optimize combustion—the driving force behind all recovery boiler processes. Poor combustion generates a host of costly problems, including high carry over, poor emissions, high sootblowing consumption and premature pluggage. Rather than expending capital, maintenance and personnel assets in a “Band-Aid” treatment of symptoms, doesn’t it make sense to get the fundamental process correct?
Industry-leading technology
Anthony-Ross Company leads the industry in developing and implementing combustion air system technology for recovery boilers worldwide. Our experience includes Computational fluid dynamic (CFD) modeling of more than 50 recovery boilers with successful modifications of more than two dozen air systems.
Primary level solution
The Anthony-Ross primary level solution eliminates crotch plate corrosion and allows operators to reduce the amount of primary combustion air and relocate it higher in the boiler to reduce carryover, while maintaining char bed control, improving chemical reduction efficiency, and increasing boiler loading. Our solution accomplishes this by replacing the entire primary level windbox/nozzle assemblies with an open windbox, port castings, and an Automatic Port Cleaner (APC) and Port Damper Assembly (PDA). This makes it possible to reduce the total primary air to approximately 30 percent of the total combustion air.
Stacked Air System™ (SAS)
Our patent-pending Stacked Air System™ (SAS) technology can improve the throughput, runtime, thermal and reduction efficiencies, and emissions from your recovery boiler without requiring costly boiler expansions and heat transfer tube modifications. Your boiler will be much more stable, even burning waste streams with greater stability, while reducing risk.
Top 10 Advantages:
Operational, performance and environmental
What is the Stacked Air System:
Illustrated description
Conventional vs. Stacked Air System:
CFD Modeling of flue gas patterns
Iso views of vertical flows
Improving combustion time, temperature and turbulence
Good combustion depends on the three “T’s”: temperature, time and turbulence. SAS technology improves all three beyond the capability of any known conventional recovery combustion system.
- Time within the combustion chamber is improved by utilizing the full furnace volume to transport the gases upward and by improving the air/fuel mixing, so that less excess air is needed.
- Temperature at the lower furnace is improved because of increased mixing speeds, enabling the air and fuel to burn more quickly.
- Turbulence is improved, because airflow introduction occurs at more elevations and in a pattern that reinforces each preceding level.
|
