forced evaporation circulating pumps

forced evaporation circulating pumps for soda ash plants

Forced evaporation circulating pump mainly through the high-efficiency liquid circulation mechanism, the medium (such as the liquid in the evaporator) continuously and uniformly transported to the inside of the evaporator, to ensure the uniform distribution of heat as well as the smooth evaporation process.

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Description

Forced evaporation circulating pumps are designed for high temperature, high pressure, and high flow applications, ensuring reliable liquid circulation in evaporation, crystallization, and chemical reaction processes. Through optimized rotor and vane design, they deliver stable performance and maximize thermal efficiency in evaporators and heat exchangers.

Main Features

  • Excellent anti-cavitation performance: Engineered for low liquid level evaporators, reduces plant investment costs and resists vapor corrosion for enhanced reliability.
  • High efficiency & energy saving: Adjustable vane angles and rotational speeds maintain optimal operating conditions, significantly reducing energy consumption.
  • Slow running, low wear: Low-speed design minimizes overflow component wear and crystal breakage, improving pump and process longevity.
  • Cantilevered rotor design: Fewer shaft seals, reduced weight and dimensions, easier maintenance, and smoother operation with less vibration and noise.
  • Pump body center support: Superior thermal neutrality and stable long-term operation compared to foot supported designs.
  • Rear door opening structure: Enables easy rotor withdrawal for maintenance without removing inlet/outlet flanges.
  • Advanced shaft sealing technology: Assembled mechanical seals (up to 612 months service life) or liquid-retardant packing seals (up to 36 months), both highly abrasion- and corrosion-resistant.
  • Evaporator without expansion joint design: Elastic base or suspended pump options allow for thermal compensation, reducing evaporator investment.
  • High reliability: Robust pump shaft and bearing design, water-cooled sleeve for effective heat dissipation, and long-life seals for stable extended operation.

Typical Applications

  • Phosphate fertilizer plants (phosphoric acid thickener and slurry circulation)
  • Bayer alumina plants (sodium aluminate lye evaporation)
  • Diaphragm caustic soda plants (NaCl caustic soda evaporation)
  • Vacuum salt plants (NaCl evaporator/crystallizer)
  • Manganese nitrate plants (Na2SO4 evaporation)
  • Hydrometallurgical plants (CuSO4, NiSO4 evaporation)
  • Union alkali plants (ammonium chloride/salt crystallizer)
  • Soda ash plants (ammonium vaporization waste recovery)
  • Pulp/paper mills (black liquor concentration)
  • Power plants (flue gas desulfurization, coking, chemical fiber evaporation/crystallization)
  • Light industry (alcohol/citric acid/sugar evaporation)

Transmission Methods

  • Direct drive (D): Motor and pump connected via flexible coupling; compact and efficient for small/medium pumps.
  • Belt drive (V): Triangular belt allows flexible speed/performance adjustment for variable flow/head requirements.
  • Reducer drive (G): Gearbox for stable operation under high power loads, suitable for large-scale applications.