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Multistage chemical pump
Multistage chemical pump
High-temperature multistage chemical pump Selection Method
The core selection criteria should revolve around three key factors: medium characteristics, temperature parameters, and operating condition requirements. Combined with the product design standards of Changsha Zhonglian Pump Industry, you can follow these steps for precise equipment selection:
Clearly define the medium and temperature limits.
First, determine the maximum operating temperature of the conveyed medium (e.g., 200℃, 350℃), as well as whether the medium contains particles, is corrosive, or has flammable and explosive properties.
The material of the flow parts for high-temperature, multistage chemical pumps must be appropriately matched: For temperatures below 200℃, cast steel or stainless steel 304 can be used; for temperatures between 200℃ and 350℃, stainless steel 316L or duplex steel is preferred; in ultra-high temperature conditions, it is recommended to use Hastelloy or titanium alloys to prevent material deformation or corrosion at high temperatures.
Verify the core parameters of operating conditions.
Calculate and verify the rated flow rate, head, and inlet and outlet pressures. Under high-temperature operating conditions, the net positive suction head (NPSH) required for pump operation will increase; therefore, it is necessary to select a pump model with strong cavitation resistance. If needed, install a booster pump upstream or raise the elevation of the suction tank to prevent damage caused by dry running.
[For more information on models, specifications, selection guidelines, and quotation plans for horizontal high-temperature multistage chemical pumps, click the image above to learn more.]
Matching pump structure
Horizontal high-temperature multistage chemical pump Highly stable, suitable for applications with large flow rates and high head conditions, easy to maintain, and widely used in chemical workshops and flue gas desulfurization systems in power plants.
Vertical high-temperature multistage chemical pump: occupies a small footprint, suitable for space-constrained environments, and can be installed in dry mode to eliminate the risk of leakage from high-temperature media.
If the medium is flammable and explosive, an explosion-proof motor must be used in conjunction with a high-temperature-resistant mechanical seal (such as a metal bellows seal or a magnetic seal) to prevent leakage at the shaft seal.
Refer to the manufacturer's technical solution.
Provide detailed operating condition parameters to specialized manufacturers such as Changsha Zoomlion Pump Industry. Based on the medium’s temperature, corrosivity, and operating pressure, these manufacturers will customize the materials for flow-path components, sealing structures, and cooling system solutions. For example, for high-temperature pumps, an axial-end cooling device can be added to reduce the operating temperatures of bearings and seals.
Verify industry adaptation cases
Prioritize models with application cases in the same industry—for example, mature use cases in scenarios such as oil refining, high-temperature heat-transfer oil transportation, and fertilizer production—so that they can more accurately meet actual needs.
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