Environmental Protection Industry - GRAT Hard-Sealed Electric Control Butterfly Valve in Desulfurization Applications

In October 2020, GRAT supplied its hard-sealed electric control butterfly valve for a flue gas desulfurization (FGD) system at a Steel Group in Jinan, China.The process involves gas-liquid reactions, requiring corrosion-resistant and precise control valves to ensure stable operation.

Flue gas desulfurization is key to controlling SO₂ emissions in industries like steel, with wet FGD being the most common method. The valve is used for coke oven gas concentration regulation, handling SO₂, SO₃, CO₂, and other process gases in a demanding industrial environment, and achieves over 90% desulfurization efficiency.

Here are the key specifications of the GRAT valve used in this application:

• Medium: Process gas containing SO₂, SO₃, O₂, N₂, CO₂, H₃O
• Pressure: PN16
• Size: DN350-DN800
• Material: SUS304 stainless steel (disc & seat), WCB (body)
• Connection: Wafer-style
• Actuation: 4-20mA proportional control, smart electric actuator with local/remote switching & LCD display
• Power Supply: AC380V

With its smart electric actuator, the GRAT valve enables precise and automated gas flow regulation, ensuring stable SO₂ removal while simplifying system operation and monitoring.

As industries continue to seek efficient and reliable solutions for emission control, GRAT remains committed to providing durable, high-performance valves that support long-term operational stability in demanding environments.

- GRAT Electric Control Butterfly Valve -