Desulfurization Pump

Product Overview

The desulfurization pump is a horizontal single-stage single-suction cantilever slurry pump specially developed for flue gas desulfurization systems of thermal power plants and smelters. It is mainly used to convey solid-liquid two-phase media such as limestone slurry and gypsum slurry. The medium carries both abrasion and weak corrosivity. The pump adopts wear-resistant and anti-corrosion materials for wetted parts, with hydraulics optimized for desulfurization slurry. It features stable operation, good anti-cavitation performance and long wear life. As key equipment for Limestone-Gypsum Wet Flue Gas Desulfurization (FGD) systems, it serves absorption tower circulation, gypsum discharge, limestone feeding and wastewater transportation.

Structural Features

Special wear-resistant & anti-corrosion wetted parts

Impeller, throatbush and liners are available in high-chromium wear-resistant alloy or wear-resistant rubber to resist erosion by gypsum particles and weak acid corrosion. Optimized flow passage reduces clogging risks for desulfurization slurry.

Back pull-out design

The rotor assembly can be removed without disconnecting inlet and outlet pipelines, minimizing maintenance downtime.

Proven shaft sealing system

Two options: packing seal and cartridge mechanical seal. Mechanical seal is equipped with independent flushing water circuit to prevent slurry crystallization on seal faces and avoid dry friction damage.

Oil-lubricated bearing frame

Oil bath lubrication provides excellent heat dissipation. Suitable for long-term continuous operation with stable bearing temperature.

Optimized hydraulic performance

Wide and smooth flow passage reduces vortex impact and abrasion. Wide high-efficiency range saves energy with reliable anti-cavitation capability.

Anti-crystallization design

Flushing port is reserved at the lowest position of pump casing. Clean water can be injected after shutdown to wash residual slurry and prevent crystallization and blockage.

Application Fields

Wet flue gas desulfurization systems in thermal power plants, metallurgical sintering flue gas treatment, waste incineration desulfurization, chemical flue gas desulfurization; transportation of limestone slurry, absorber circulating slurry, gypsum discharge, feed for wastewater cyclones and emergency slurry transfer.

Suitable Medium

Limestone slurry, gypsum slurry, acidic desulfurization wastewater containing chloride ions, mixed with solid particles (gypsum and limestone powder). Normal medium temperature ≤80℃, pH value 4～9.

Typical Technical Parameters

Flow rate: 20～2500 m³/h

Head: 10～90 m

Rotating speed: 740～1480 r/min

Drive: 380V three-phase asynchronous motor; variable frequency drive optional