Industria de Cloro Álcali
INDUSTRIA

Pumps for the Chlor Alkali Industry

El chlor alkali industry uses electrolysis to produce chlorine, caustic soda, and hydrogen from purified brine. Pumping systems are involved throughout brine preparation, chemical treatment, product processing, and wastewater handling. Depending on the process, pumps may handle chloride-rich brine, hydrochloric acid, caustic soda, sodium hypochlorite, chlorinated liquids, and corrosive wastewater.

These applications require careful consideration of chemical compatibility, temperature, concentration, solids content, leakage control, flow rate, and head. Changyu provides corrosion-resistant pump solutions for different chlor alkali process duties, with pump configuration and wetted materials selected according to the actual operating conditions.

Fluido compatible

Chlor Alkali Industry Pumping Applications

Different sections of a chlor alkali plant handle very different fluids. Saturated brine containing salt mud, circulating electrolyte, high-temperature caustic soda with salt crystals, sodium hypochlorite, and hydrochloric acid all place different demands on the pump.

For this reason, Changyu selects pumps according to the actual process duty, not simply according to the chemical name. Solids content, temperature, chloride concentration, crystallization, leakage requirements, and the installation position of the pump all affect the final selection.

Changyu’s chlor alkali pump solutions cover key process sections including:

Brine Purification / Electrolysis / Caustic Soda Evaporation and Concentration / Chlorine Gas and Hypochlorite Handling / Hydrochloric Acid Synthesis

Brine Purification

Aplicación:

Brine purification is one of the first stages of pumping in chlor alkali production. Saturated brine may contain a certain amount of salt mud and other suspended impurities before and during purification. The pump therefore needs to cope with both corrosion and particle wear rather than treating the liquid as a clean chemical solution.

For brine containing suspended salt mud, the UHB Series corrosion-resistant slurry pump is a suitable option. The UHB series can handle corrosive slurry with solids content of less than 45%, making it more appropriate for this type of mixed liquid-solid service than a conventional clean-liquid chemical pump.

Recommended Pumps

Main selection factors:

  • Resistencia al desgaste
  • Saturated brine concentration
  • Salt mud and suspended solids
  • Contenido en sólidos
  • Flow rate and head
  • Chloride corrosion

Bombas industriales para lodos de la serie UHB

Bombas industriales de lodos de alto rendimiento diseñadas para fluidos corrosivos y abrasivos. Resistentes y personalizables, ideales para aplicaciones en los sectores químico, minero y de aguas residuales. ¡Solicite una cotización hoy mismo!

Bomba para lodos abrasivos de la serie UHB

La bomba para lodos abrasivos de la serie UHB de Changyu es una bomba centrífuga de alto rendimiento diseñada para manejar medios corrosivos con un alto contenido de sólidos. Entre sus características principales se incluyen un revestimiento grueso de UHMW-PE (8-20 mm) que ofrece una resistencia extrema al desgaste, un impulsor semiabierto para evitar atascos y un sello dinámico tipo K que garantiza un funcionamiento sin fugas. Se utiliza ampliamente en las industrias de fundición, fertilizantes y tratamiento de aguas residuales.

Electrolysis

Aplicación:

The electrolysis section handles anolyte and catholyte containing chloride ions and, depending on the process location, free chlorine. Leakage control becomes particularly important when transferring aggressive electrolyte.

For these duties, a magnetic-drive pump can be considered where zero-leakage or reduced leakage is required. The final pump selection should be based on the electrolyte composition, temperature, flow, head, and material compatibility.

Bombas Recomendadas:

Main selection factors:

  • Chloride concentration
  • Free chlorine content
  • Temperatura
  • Requisitos de fugas
  • Flow rate and head
  • Wetted material compatibility

Bomba centrífuga de accionamiento magnético – Serie CYQ

Changyupump CYQ Series Magnetic Drive Centrifugal Pump ofrece una solución de bomba de accionamiento magnético sin sello y bomba de proceso químico, garantizando una transferencia de fluidos 100% libre de fugas para aplicaciones industriales exigentes.

Caustic Soda Evaporation and Concentration

Aplicación:

The caustic soda concentration section presents a different pumping challenge. The liquid can be hot and may contain NaCl crystals, so the pump must withstand both elevated temperature and potential crystallization or solids-related wear.

For high-temperature caustic soda circulation, Changyu recommends the CYG Series High Temperature Chemical Pump, with a working temperature of up to 150°C according to the pump configuration.

This application is different from ordinary caustic soda transfer. The pump is selected not only for NaOH compatibility, but also for the temperature and salt-crystal conditions in the circulation system.

Bombas Recomendadas:

Main selection factors:

  • NaOH concentration
  • Temperatura de funcionamiento
  • NaCl crystal content
  • Circulation flow
  • Required head
  • Compatibilidad de materiales

Bomba química para altas temperaturas de la serie CYG

La serie CYG de Chuangyu Pump es una bomba química de alta temperatura y alto rendimiento que cuenta con un revestimiento moldeado de PFA de 8 a 20 mm. Diseñada para medios agresivos como el ácido sulfúrico y lodos abrasivos (con hasta un 40,1 % de sólidos), funciona de manera estable entre -20 °C y 180 °C. Ideal para la desulfuración de gases de combustión (FGD), la metalurgia y el procesamiento químico.

Chlorine Gas and Hypochlorite Handling

Aplicación:

Chlorine handling involves conditions that differ from ordinary liquid chemical transfer. Wet chlorine and sodium hypochlorite require materials with good resistance to chlorine-containing and oxidizing media.

For sodium hypochlorite liquid handling, the FYH Series fluoroplastic submerged pump can be considered.

Bombas Recomendadas:

Main selection factors:

  • Wet chlorine or hypochlorite concentration
  • Oxidizing conditions
  • Temperatura
  • Installation depth
  • Resistencia a la corrosión
  • Gas-liquid conditions

Bomba semisumergible de fluoroplástico de la serie FYH: bomba química de alta eficiencia y resistente a la corrosión

La bomba semisumergible de la serie FYH de Changyu Pump es una solución vertical de alto rendimiento y sin sellos diseñada para el transporte de productos químicos agresivos. Gracias a su revestimiento de FEP resistente a la corrosión y a su impulsor abierto de doble equilibrio, es capaz de manejar ácidos concentrados y sólidos sin fugas. Este equipo, con certificación CE, admite caudales de hasta 400 m³/h, lo que lo convierte en una alternativa de bajo mantenimiento para entornos industriales hostiles.

Bomba sumergible resistente a productos químicos de la serie FYH

La serie FYH de Changyu Pump es una bomba sumergible de primera calidad resistente a productos químicos, con un diseño vertical que no requiere cebado. Diseñada para medios corrosivos a temperaturas de entre -20 °C y 90 °C, cuenta con un revestimiento de fluoroplástico de grado militar que garantiza un funcionamiento estable y de bajo mantenimiento en los sumideros industriales más exigentes.

Hydrochloric Acid Synthesis

Aplicación:

Hydrochloric acid synthesis and handling require pumps that can withstand hydrochloric acid and associated chloride-rich conditions. Conventional metal pump materials may not provide sufficient corrosion resistance for these duties.

For hydrochloric acid transfer, a fluoroplastic-lined centrifugal pump is a suitable configuration where the process requires high corrosion resistance.

Bombas Recomendadas:

Main selection factors:

  • Concentración de ácido clorhídrico
  • Temperatura
  • Caudal
  • Cabeza
  • Resistencia a la corrosión
  • Lining and seal compatibility

Bomba centrífuga de fluoroplástico serie CYF

La bomba centrífuga de fluoroplástico CYF está diseñada para manejar productos químicos altamente corrosivos, como ácidos, álcalis, solventes y aguas residuales. Gracias a sus piezas de paso revestidas de FEP, PFA o PTFE, ofrece una excelente resistencia a la corrosión, un funcionamiento estable y una larga vida útil. Se utiliza ampliamente en las industrias química, de galvanoplastia, farmacéutica, metalúrgica y de tratamiento de aguas residuales. Suministro directo del fabricante en China con servicio de personalización.

Bomba centrífuga de transferencia de ácido clorhídrico serie CYF

Bomba Centrífuga de Transferencia de Ácido Clorhídrico Serie CYF La bomba centrífuga de transferencia de ácido clorhídrico de la serie CYF de Changyu Pump presenta una construcción de fluoroplástico de una sola etapa que ofrece resistencia a la corrosión y tolerancia a altas temperaturas. Es ideal para transportar fluidos ácidos en las industrias química, de recubrimiento electrolítico y petrolera, sirviendo como una bomba centrífuga altamente eficiente y estable Introducción del Producto La serie CYF…

How to Select a Pump for the Chlor Alkali Industry

The chemical name alone is not enough to determine the correct pump. Two pumps handling the same chemical can have completely different requirements when concentration, temperature, solids content, or installation conditions change.

  • The concentration of brine, NaOH, HCl, or sodium hypochlorite affects material compatibility and should be confirmed before selecting the pump.
  • Temperature is particularly important for concentrated caustic soda and evaporation processes. Higher operating temperatures can change material performance and pump operating conditions.
  • Salt mud and NaCl crystals introduce a wear component that does not exist in clean chemical liquid transfer. Pump construction and hydraulic design should therefore be considered together with corrosion resistance. For aggressive electrolyte and other hazardous chemical liquids, leakage control can influence the pump configuration. Magnetic drive pumps can be considered where this requirement is significant.
  • Some applications require a submerged pump rather than a conventional horizontal centrifugal configuration. Sodium hypochlorite handling is one example where installation conditions can affect the appropriate pump design.
  • The required flow rate and head determine the hydraulic performance needed from the pump.

These parameters should be confirmed together with the chemical and temperature conditions before final selection.

Pump Selection by Chlor Alkali Process

Chlor Alkali ProcessMedio BombeadoMain Pumping ChallengeBomba recomendada
Brine PurificationSaturated brine + salt mudCorrosion + suspended solids + wearSerie UHB
ElectrolysisAnolyte/catholyteChloride + free chlorine + leakage controlMagnetic Drive Pump / CYQ Series
Caustic Soda EvaporationHot concentrated NaOH + NaCl crystalsHigh temperature + crystallizationSerie CYG
Chlorine & Hypochlorite HandlingWet chlorine/sodium hypochloriteOxidation + chloride corrosionFYH Series
Hydrochloric Acid SynthesisHydrochloric acid / HClFuerte corrosión químicaFluoroplastic-Lined Pump / CYF Series

Note: The pump should be selected according to the actual process conditions rather than assigning the same pump type to every chlor alkali application.

Si no está seguro de cómo elegir, por favor póngase en contacto con nuestro equipo, y le responderemos dentro de las 24 horas.

Preguntas frecuentes

Different sections of a chlor alkali plant require different pump configurations. UHB pumps can be used for corrosive slurry duties such as brine containing salt mud, CYG pumps are suited to high-temperature caustic soda circulation, and FYH pumps can be considered for sodium hypochlorite and other submerged corrosive liquid applications. CYQ and CYF provide alternative solutions for specific leakage-control and fluoroplastic requirements.

For saturated brine containing salt mud or other suspended solids, the UHB Series corrosion-resistant slurry pump is a suitable option. The selection should consider solids content, chloride concentration, flow rate, head, and wear conditions.

The CYG Series High Temperature Chemical Pump can be considered for high-temperature caustic soda circulation. The pump configuration can handle working temperatures of up to 150°C according to the specified configuration. NaOH concentration, temperature, NaCl crystal content, flow, and head should be confirmed before selection.

The FYH Series Fluoroplastic Submerged Pump can be considered for sodium hypochlorite transfer where a submerged installation is suitable. Concentration, temperature, oxidizing conditions, installation depth, and gas-liquid conditions should be considered.

A fluoroplastic-lined centrifugal pump can be used for hydrochloric acid transfer where strong corrosion resistance is required. The CYF Series Fluoroplastic Centrifugal Pump can be considered as an alternative, with the final selection based on HCl concentration, temperature, flow, head, and material compatibility.

Yes. Magnetic drive pumps can be considered for suitable corrosive liquid applications where leakage control is important. In chlor alkali processes, they may be used for electrolyte and other aggressive liquid transfer depending on the medium and operating conditions.

Pump selection should start with the actual process conditions: pumped medium, concentration, temperature, solids content, flow rate, head, installation position, and leakage requirements. The pump material and configuration should then be matched to those conditions.

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Producto

Recommended Chlor Alkali Industry Pumps

Below are selected pump models for chlor alkali production and related chemical transfer duties. Each pump is suited to different process conditions, such as corrosive brine containing solids, high-temperature caustic soda, sodium hypochlorite, electrolyte, and hydrochloric acid. The final pump selection depends on the medium, concentration, temperature, solids content, flow rate, head, installation conditions, and leakage requirements. If you are not sure which pump is suitable for your process, contáctenos ahora.