With increasingly strict environmental regulations on ultra-low emissions across the global iron and steel industry, metallurgical plants are confronted with thorny flue gas treatment obstacles. Hot blast stoves, CDQ (Coke Dry Quenching) equipment and sintering production lines feature variable flue gas flow and unstable operating temperature. Traditional SDS sodium bicarbonate desulfurization brings obvious drawbacks including high raw material expenses, strict reaction temperature requirements and hazardous waste by-products, forcing plant operators to seek economical and reliable alternative desulfurization technology.

Tianjin Huineng Environmental Protection Technology Co., Ltd. specializes in the R&D, production and supply of ultra-fine high specific surface calcium hydroxide desulfurizer, alongside the mature HNPS dry calcium injection desulfurization EPC service. Our high-active calcium-based desulfurizer boasts far larger specific surface area than conventional lime powder, enabling sufficient contact reaction with acidic pollutants such as SO₂, SO₃ and HCl within low-temperature flue gas. Stable desulfurization performance can be maintained even under frequent load fluctuation of steel production facilities.

The HNPS dry injection process adopts fully enclosed pneumatic powder conveying, with no wastewater generation throughout the system. After gas-solid reaction, the produced desulfurization ash is classified as general industrial solid waste. It can be reused as raw materials for cement manufacturing and sintering batching in steel mills, turning waste into available resources. This is a prominent advantage compared with SDS technology, where sodium sulfate residues require costly hazardous waste disposal.

Our technical solution has achieved stable industrial operation on the 4500m³ blast furnace hot blast stove desulfurization project of Baowu Shaogang. Long-term operation data proves that the flue gas SO₂ concentration can be steadily controlled below national ultra-low emission limits. Under equal desulfurization efficiency, the consumption of desulfurizer is greatly reduced, significantly cutting comprehensive environmental operation costs for steel enterprises.

Beyond desulfurizer supply, Huineng delivers one-stop supporting services including flue gas working condition detection, process scheme design, equipment matching, on-site commissioning and long-term technical operation guidance. We tailor targeted flue gas treatment plans based on the actual production parameters of each customer, adapting to hot blast stoves, CDQ systems and sintering flue gas treatment scenarios of different scales.

If your factory is looking to optimize existing desulfurization facilities or build new flue gas treatment systems, welcome to contact our team. We can provide professional working condition evaluation and detailed cost comparison scheme free of charge.

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Tianjin Huineng Environmental Protection Technology Co., Ltd.