Flue Gas Treatment

Effective flue gas treatment is essential for controlling acid gases, heavy metals, and organic pollutants, helping plants comply with environmental regulations and protect downstream equipment. Rospen designs and supplies dry powder handling and dosing systems that accurately inject reagents such as sodium bicarbonate and powdered activated carbon (PAC) into flue gas streams for reliable emissions reduction.

From Bulk Storage to Precise Injection

Flue gas treatment systems typically rely on dry sorbents, and PAC dosed into the duct to capture acid gases, mercury and organic contaminants. Rospen provides complete material handling solutions from the delivery point to injection lances.

• Systems for unloading, storing and conditioning sodium bicarbonate and PAC from 25 kg sacks, big bags or bulk silos, sized to suit plant throughput.
• Engineered storage and discharge arrangements to maintain reliable powder flow and minimise compaction, bridging and segregation.
• Layouts tailored to retrofit and new‑build projects, integrating with existing flue gas ducts, mixers and control systems.

Stable Dosing for Emissions Control

Regularity in emissions performance requires accurate, sensitive dosing of sorbents and PAC, even at extremely low addition rates relative to the flue gas volume. The high-accuracy feeding and control systems at Rospen contribute to stable control in the emissions compliance with optimal reagent utilisation.

• Loss in weight screw feeders and gravimetric systems to meter sorbents and PAC into conveying air or directly towards injection points.
• Dosing settings that can provide between a few grams per cubic metre and above, depending on the flue gas flow and pollutant load.
• Connection with plant PLC/SCADA so dosing rates can be linked to flue gas flow, load, or emissions measurements, and data can be recorded for reporting and optimisation.

Designed for Demanding Energy Applications

Flue gas treatment systems operate in harsh environments and must combine high availability with tight dust control. Rospen’s equipment and system designs reflect these operational demands.

• Dust‑tight equipment and transfer points to limit fugitive dust and help maintain clean, safe operating areas around reagent handling systems.
• Robust components selected for continuous service, with straightforward access for inspection and routine maintenance.
• Proven use of loss‑in‑weight screw feeders and dry dosing systems in energy and waste‑to‑energy applications for flue gas treatment and pH correction.

A Partner for Energy and Waste‑to‑Energy Plants

Rospen has extensive experience supplying powder-handling and dosing systems to the energy sector, including flue gas treatment processes. This background supports reliable delivery of complete reagent dosing solutions for new and existing plants.

• Systems that add sodium bicarbonate and activated carbon to waste gas and air flows to absorb undesirable compounds and support emission limits.
• Ability to combine mechanical equipment, controls and documentation to meet the expectations of utilities, EPCs and plant operators.
• Support from feasibility and design through to factory testing, site installation and commissioning as part of wider flue gas treatment packages.