Single-Effect Evaporator

Sodium chloride single-effect evaporators are highly efficient and energy-saving integrated concentration/crystallization devices specifically developed for NaCl solutions. They employ either "forced circulation + mechanical vapor recompression (MVR)" or "single-effect + live steam thermal compression (TVR)" process packages, resulting in a comprehensive operating cost reduction of over 50% compared to traditional triple-effect evaporators. They are widely used in the resource recovery of sodium chloride and "zero discharge" of wastewater in industries such as chlor-alkali, dyes, pharmaceuticals, coal chemicals, and seawater desalination brine.

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This MVR single-effect evaporator is specifically designed for the concentration and crystallization of sodium sulfate solutions. It employs forced circulation and mechanical vapor recompression technology, consuming ≤32kWh of electricity per ton of water, resulting in operating costs more than 45% lower than triple-effect evaporators. The system inhibits scaling through preheating and high-speed circulating evaporation, and, combined with an OSLO crystallizer, produces high-purity crystals of 0.4–0.8mm. Its core advantages include: heat recovery rate ≥90%, virtually no need for live steam and cooling water, support for automated operation and modular installation, and wide applicability to high-salt wastewater treatment in coal chemical and lithium battery industries, achieving energy conservation, emission reduction, and resource recovery.