Special Considerations for Selecting Desulfurization Pumps

As a leading enterprise in slurry pump manufacturing, Hebei Xingou Machinery Equipment Co., Ltd. understands that selecting the right desulfurization pump is critical for the efficiency and longevity of flue gas desulfurization (FGD) systems. These pumps operate under uniquely challenging conditions, requiring specific design and material considerations to ensure optimal performance. Below, we outline the key technical requirements for desulfurization pump selection.

Key Factors Influencing Desulfurization Pump Selection

1. Slurry Characteristics and Material Compatibility

The properties of the slurry—such as density, chloride content, and the size and shape of solid particles—directly impact pump material selection and type. For instance:

High chloride concentrations (which can exceed 60,000 ppm) demand materials with excellent corrosion resistance, such as super-low carbon duplex stainless steel CD4MCuN or high-chromium alloys like Cr30A -7.

Abrasive slurries with high solid concentrations (up to 60% by weight) require wear-resistant materials to combat erosion. High-chromium alloy impellers are widely adopted for their durability in such environments -1-7.

2. Robust Mechanical Design for Severe Operating Conditions

Desulfurization pumps must endure abrasive, corrosive, and high-temperature conditions. Essential design features include:

"Back-Pull" Structure: Enables maintenance of components like the impeller and mechanical seal without disassembling inlet/outlet pipelines, reducing downtime -7.

Efficient Sealing Systems: Single-ended cartridge mechanical seals or auxiliary impeller sealing structures prevent leakage under pressure. For example, a sealed structure with a thermoplastic body and corrosion-resistant alloys can extend service life -4-7.

Heavy-Duty Axes and Lubrication: A large-diameter, short shaft minimizes deflection, while oil-lubricated bearings enhance reliability under continuous operation -7.

3. Adaptation to Process Requirements

Flushing Systems: To avoid mechanical clogging, pumps and pipelines should be equipped with automatic cleaning devices. Process wastewater (e.g., from gypsum production) can be repurposed for flushing. After flushing, pumps should be refilled with water to prevent corrosion from residual flue gas -1.

Pressure and Flow Capabilities: Pumps must handle system pressures up to 3.0 MPa (G) and accommodate varying flow rates, ensuring stable operation in demanding FGD circuits -8.

Why Partner with Hebei Xingou Machinery Equipment Co., Ltd.?

At Hebei Xingou, we specialize in engineering desulfurization pumps that integrate advanced materials, innovative design, and stringent manufacturing standards. Our pumps are designed to meet the specific challenges of FGD systems, including:

Compatibility with slurries containing chlorides up to 60,000 ppm and temperatures ≤100°C.

Designs that prioritize energy efficiency, ease of maintenance, and extended service life.

If you are looking for a reliable, high-performance desulfurization pump solution tailored to your operational needs, contact us today to learn how our expertise can enhance your system's reliability and efficiency.

Jack +8615364966178   info@xo-pump.com