Desulfurization pumps play a crucial role in various industrial processes, especially in power plants, chemical industries, and waste treatment facilities. As a desulfurization pump supplier, I have in – depth knowledge of different types of desulfurization pumps available in the market. In this blog, I will introduce you to the main types of desulfurization pumps, their features, and applications. Desulfurization Pump
Centrifugal Desulfurization Pumps
Centrifugal desulfurization pumps are the most commonly used type in the desulfurization process. They work on the principle of centrifugal force. When the impeller rotates, it creates a centrifugal force that pushes the liquid outwards from the center of the impeller.
Features
- High flow rate: Centrifugal pumps can handle large volumes of liquid, making them suitable for large – scale desulfurization systems. For example, in a large power plant, a centrifugal desulfurization pump can pump thousands of cubic meters of desulfurization slurry per hour.
- Wide range of head: They can provide different heads according to the system requirements. The head is the height to which the pump can lift the liquid. Depending on the design and size of the pump, the head can range from a few meters to several tens of meters.
- Simple structure: Centrifugal pumps have a relatively simple structure, which makes them easy to install, operate, and maintain. They usually consist of an impeller, a casing, and a shaft.
Applications
- Power plants: In coal – fired power plants, centrifugal desulfurization pumps are used to transfer the desulfurization slurry from the absorber to the gypsum dewatering system. The slurry contains calcium carbonate and other chemicals that react with sulfur dioxide in the flue gas to remove it.
- Chemical industries: They are also used in chemical processes where desulfurization is required. For example, in the production of sulfuric acid, centrifugal pumps can be used to transfer the desulfurized liquid.
Diaphragm Desulfurization Pumps
Diaphragm desulfurization pumps are positive displacement pumps. They use a flexible diaphragm to move the liquid. The diaphragm is usually made of rubber or other elastic materials.
Features
- Self – priming: Diaphragm pumps can self – prime, which means they can draw liquid into the pump without the need for external priming devices. This is very useful in applications where the pump needs to start and stop frequently.
- Ability to handle abrasive and viscous fluids: The diaphragm can withstand the abrasion caused by solid particles in the desulfurization slurry. It can also handle viscous fluids, which is important in some desulfurization processes where the slurry has a high viscosity.
- Precise flow control: Diaphragm pumps can provide precise flow control. By adjusting the stroke length and frequency of the diaphragm, the flow rate can be accurately regulated.
Applications
- Small – scale desulfurization systems: Diaphragm pumps are often used in small – scale desulfurization systems, such as in some industrial workshops or small power plants. They are suitable for applications where the flow rate is relatively low and the requirements for flow control are high.
- Waste treatment facilities: In waste treatment facilities, diaphragm pumps can be used to transfer desulfurized wastewater. The ability to handle abrasive and viscous fluids makes them a good choice for this type of application.
Submersible Desulfurization Pumps
Submersible desulfurization pumps are designed to be submerged in the desulfurization slurry. They are usually used in sumps or tanks.
Features
- Compact design: Submersible pumps have a compact design, which allows them to be installed in small spaces. They do not require a separate pump room, which can save space and installation costs.
- Low noise: Since the pump is submerged in the liquid, the noise generated during operation is relatively low. This is beneficial in environments where noise pollution needs to be controlled.
- High efficiency: Submersible pumps can operate at high efficiency because they do not need to overcome the suction head. The liquid can directly enter the pump from the surrounding environment.
Applications
- Absorber tanks: In desulfurization systems, submersible pumps are often used in absorber tanks to circulate the desulfurization slurry. They can ensure that the slurry is evenly distributed in the tank and that the desulfurization reaction proceeds smoothly.
- Wastewater treatment ponds: In wastewater treatment ponds, submersible desulfurization pumps can be used to transfer the desulfurized wastewater for further treatment.
Magnetic Drive Desulfurization Pumps
Magnetic drive desulfurization pumps use magnetic coupling to transfer power from the motor to the impeller. This eliminates the need for a traditional shaft seal, which reduces the risk of leakage.
Features
- Leak – free operation: The magnetic coupling design ensures that there is no leakage of the desulfurization slurry. This is very important in applications where the slurry contains harmful chemicals or where environmental protection requirements are high.
- Low maintenance: Since there is no shaft seal, there is no need to replace the seal regularly. This reduces the maintenance cost and downtime of the pump.
- High – speed operation: Magnetic drive pumps can operate at high speeds, which can increase the flow rate and efficiency of the pump.
Applications
- Chemical industries: In chemical industries where the desulfurization process involves handling corrosive and toxic chemicals, magnetic drive desulfurization pumps are a preferred choice. They can prevent the leakage of these chemicals and ensure the safety of the production process.
- Pharmaceutical industries: In pharmaceutical industries, where the quality and purity of the products are of utmost importance, magnetic drive pumps can be used to transfer desulfurized liquids without the risk of contamination.
Selecting the Right Desulfurization Pump
When selecting a desulfurization pump, several factors need to be considered.
- Flow rate: The flow rate required by the desulfurization system is an important factor. It depends on the size of the system, the amount of flue gas to be treated, and the desulfurization efficiency.
- Head: The head is also crucial. It is determined by the height difference between the source and the destination of the liquid, as well as the resistance in the pipeline.
- Fluid properties: The properties of the desulfurization slurry, such as its viscosity, density, and the presence of solid particles, need to be considered. Different types of pumps have different capabilities in handling different fluid properties.
- Operating conditions: The operating conditions, such as the temperature, pressure, and corrosiveness of the environment, also affect the pump selection.
As a desulfurization pump supplier, I can provide professional advice on pump selection based on your specific requirements. We have a wide range of desulfurization pumps with different specifications and features to meet the needs of various industries.
Sight Glass If you are in the market for desulfurization pumps or need more information about our products, please feel free to contact us. We are committed to providing high – quality products and excellent service. Our team of experts can help you choose the most suitable pump for your desulfurization system and ensure its reliable operation.
References
- "Pump Handbook" by Igor J. Karassik et al.
- "Centrifugal Pumps: Design and Application" by Heinz P. Bloch and Allan R. Budris.
- "Positive Displacement Pumps: Technology and Applications" by Heinz P. Bloch.
Chongqing Hongar Industries Co., Ltd.
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