At the core of the triple-effect evaporator is the strategic reuse of energy. This system operates on a clever mechanism where the secondary steam generated from one evaporation process is utilized as the heating source for the next, thereby substantially reducing the need for fresh steam.
Triple-effect evaporator is a common type of multi-effect evaporator. By utilizing the energy of secondary steam multiple times, it aims to reduce the consumption of external live steam. It is a traditional and reliable evaporating process. Combined with separators and crystallizers of different structures, it can achieve concentration and crystallization processes for various materials, meeting multiple processing requirements.
During the evaporation process, a large amount of secondary steam is generated, containing significant latent heat, which should be recovered and utilized. The secondary steam is fed into the heating chamber of the subsequent effect evaporator. As long as the operating pressure and boiling point of the solution in the subsequent effect are lower than those in the current effect, the fed-in secondary steam can still function as a heating source. This cascading effect of reusing steam across multiple stages or effects ensures a magnified efficiency in heat utilization, leading to significant energy savings and reduced operating costs.
In the triple-effect evaporator, the secondary steam from the first effect is used as the heating source for the second effect, and the secondary steam from the second effect as the heat source for the third effect. By controlling the pressure difference and the boiling point difference within each effect evaporator, it is possible to use the secondary steam generated by one evaporator to heat the next.
The triple-effect evaporator consists of three interlinked evaporators, a condenser, and auxiliary equipments. The three evaporators operate in a series to form the triple-effect system,with each stage designed to progressively utilize the residual energy from the preceding one. The entire evaporation system adopts a continuous input and output production method, achieving continuous operation.
The triple-effect evaporator is suitable for the evaporation concentration and crystallization in industries with crystalline, high concentration, and high viscosity substances, such as chemical, pharmaceutical, dyeing, environmental engineering, and waste liquid evaporation recovery. It is also commonly used in the industrial production of chemical, light industry, food, pharmaceutical, etc., for the production and preparation of ammonium nitrate, caustic soda, antibiotics, sugar making, and freshwater preparation, as well as in the treatment of industrial wastewater in industries like chemical, pharmaceutical, metallurgy, mining, petrochemical, rare earths, lithium batteries, and hazardous waste.
Generally, the triple-effect evaporator consumes 0.37~0.46 tons of steam per ton of water evaporated.
When designing a triple-effect evaporator system, our engineers consider several critical factors to optimize its operation. These include the specific needs for heat recovery, the potential for automatic online cleaning to ensure long-term efficacy, and the choice among various process configurations such as forced or natural circulation and falling or rising film evaporation. The selection is tailored to meet the unique requirements of each application, ensuring the system’s maximum efficiency and reliability.
If any demands on evaporator and crystallizers, pls feel free to contact us.
