Desulphurization Pump
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Desulfurization pumps are a type of industrial pump specifically designed for use in flue gas desulfurization (FGD) systems. Flue gas desulfurization is a process used to remove sulfur dioxide (SO2) from exhaust gases produced by the combustion of fossil fuels, particularly in power plants. The removal of sulfur dioxide is crucial for environmental reasons, as it helps reduce air pollution and the formation of acid rain. Desulphurization pump are corrosion-resistant pumps, mainly used for the transportation of corrosive liquids. It is a widely used pump among general equipment pumps. The desulfurization pump is usually a horizontal cantilever single-stage single-suction centrifugal pump, which is specially designed and developed for transporting corrosive media containing fine particles. The flow material of the desulfurization pump is required to be wear-resistant and corrosion-resistant.
Our desulfurization pumps are constructed with materials that resist corrosion and abrasion, such as high-chrome alloys or other wear-resistant materials.
Specialized seals and sealing systems are employed to prevent leakage and ensure the efficient operation of the pump over an extended period.
Given the critical nature of the desulfurization process, our pumps are designed for high reliability and extended service life.
The pumps are engineered to handle the specific characteristics of FGD slurry efficiently, minimizing energy consumption and optimizing overall system performance.
Desulfurization pumps are designed with considerations for the density and composition of the slurry, as well as the operating conditions within the FGD system.
SGB offers a comprehensive selection of dredger pumps designed to meet the demanding requirements of the dredging industry. Our products are built to handle a wide range of slurry pumping applications, including dredging, sand and gravel extraction, mining, and more.
Our Desulphurization pumps are specially designed to handle high-pressure slurry pumping applications, including the transportation of corrosive and abrasive materials. They are ideal for use in power plant desulphurization processes, where they can effectively pump limestone slurry and other abrasive materials.
Our Sludge Recirculation Pumps are designed to handle the transfer of sludge from one location to another, making them ideal for use in wastewater treatment plants, chemical processing facilities, and other applications. They are built to handle high volumes of sludge and are available in a variety of sizes and configurations to meet the specific needs of your application.
Whether you need a Desulphurization Pump, a Sludge Recirculation Pump, or any other type of dredger pump, SGB has the solutions you need to get the job done right. Contact us today to learn more about our products and services.
February 4, | 5 minute read
Ambient (outdoor) air pollution is a major environmental health problem affecting everyone in low-, middle-, and high-income countries. According to the World Health Organization (WHO), 91 percent of the world's population lives in places where air quality exceeds WHO guideline limits, placing millions of people's short- and long-term health at risk.
Outdoor air pollution originates from natural and anthropogenic sources. While natural sources contribute substantially to local air pollution in arid regions more prone to forest fires and dust storms, the contribution from human activities far exceeds natural sources.
Of today's ambient air pollutants, sulfur dioxide (SO2) is one of the most prevalent. SO2 is a corrosive gas that is created by the oxidation of sulfur-bearing materials such as coals, oil and natural gas. To minimize the adverse effects of sulfur oxides (SO2 and SO3) on the environment, many power plants and industrial facilities have begun to use flue gas desulphurization (FGD) scrubbers to remove both SO2 and SO3 from combustion gases.
What is Flue Gas Desulfurization?
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In tackling continuously growing environmental challenges, effective flue gas sulfurization (FGD) enables you to control your plant's emissions and chemical balance more effectively. Flue gas desulfurization is a set of technologies used to remove SO2 from exhaust flue gases of fossil-fuel power plants, as well as from the emissions of other SO2 emitting processes.
One of the most integral parts of the FGD process is that of pumped slurry applications, which contain fluid properties consisting of both abrasives and solids that require the appropriate application of sealing technology.
These slurries are moved through a series of pumps, agitators, fans and blowers during the FGD process. However, when it comes to this process, it's essential for companies to ensure they are selecting the proper seal, as this is critical in maximizing the operational performance of equipment.
Below is an explanation of slurry types, as well as sealing recommendations to ensure optimal sealing and equipment uptime.
Slurry Types
Limestone slurry
transfer and feed pumps are heavy-duty slurry pumps that can handle slurries which can contain solids content as high as 50 percent. Operating temperature is usually ambient to 125°F/51°C. A small amount of water 'ush is often allowed when utilizing a liquid quench. This helps cool the seal to keep it operational. Grease quenches have also been successfully applied. Fly ash scrubber systems require special consideration because of their extreme abrasiveness.
Recirculation slurry
is a heavy-duty slurry requiring large-shaft pump designs that are generally single-stage centrifugal pumps. Due to the abrasive nature of the slurries and possible high concentration of chloride ions and low pH (5.5), these pumps are often manufactured with high-nickel alloy materials, such as alloy C-276, or are rubber-lined. These pumps are subject to cavitation due to entrained air in the slurry. Solids will be in the 15 percent to 20 percent range. Often, a small water 'ush or liquid quench is used to extend seal life.
Thickener under'ow slurry
is comprised of 45 percent to 50 percent gypsum that is pumped into a surge tank. Heavy-duty slurry pump designs with relatively large shaft sizes are used to move this slurry, and they are generally single-stage centrifugal pumps. The slurry is abrasive and can have high concentrations of chloride ions (up to 20,000 ppm) and a low pH. The pumps are often constructed from a high nickel-alloy such as C-276 or are rubber-lined. Alloy C-276 is used to prevent stress corrosion cracking. The pumped slurry also has high concentrations of solids in the 45% to 50% range. The operating temperature will be around 100°F/38°C.
Sealing Recommendations
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