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Benefits of condensate recovery
Release time:
2021-01-15
Steam, as a clean and safe energy source, is widely used in various industries. After the latent heat of evaporation is released from the steam using equipment, it turns into saturated condensate at almost the same temperature and pressure. Because the operating pressure of the steam is greater than atmospheric pressure, the heat of the condensate can reach 25% of the evaporation, and the higher the pressure and temperature, the greater the heat of the condensate and the greater the proportion of the condensate. It can be seen thatCondensate Recoveryand effectively utilizing its heat has enormous energy-saving potential.
Condensate RecoveryBenefits: saving boiler fuel, saving industrial water, saving boiler feedwater costs, improving the factory environment, eliminating steam clouds, and improving the actual thermal efficiency of the boiler.
The condensate recovery system recovers high-temperature condensate discharged from the steam system, which can greatly utilize the heat of the condensate and save water and fuel. Condensate recovery systems are generally divided into open recovery systems and closed recovery systems.
Open recovery systemsCondensate Recoveryinto the boiler feedwater tank. In the process of condensate recycling, one end of the recovery pipeline is open to the atmosphere, that is, the condensate collection tank is open to the atmosphere. When the pressure of the condensate is low and cannot reach the reuse location by self-pressure, the condensate is transported by a high-temperature water pump. The advantages of this system are simple equipment, convenient operation, and low initial investment. However, the system occupies a large area, has poor economic benefits, and causes significant environmental pollution. Moreover, because the condensate directly contacts the atmosphere, the concentration of dissolved oxygen in the condensate increases, easily leading to equipment corrosion. Therefore, this system is suitable for small steam supply systems with low condensate volume and less secondary steam. When using this condensate recovery system, secondary steam emissions should be minimized.
Closed recovery systemsCondensate RecoveryThe collection tank and all pipelines are under constant positive pressure, and the system is closed. The condensate recovery system directly recovers most of the energy contained in the condensate into the boiler through certain recovery equipment. The recovery temperature of the condensate is only lost in the cooling part of the pipe network. Due to the closure, the water quality is guaranteed, and the water treatment cost for returning to the boiler is reduced. The advantages are good economic benefits of condensate recovery and long equipment life, but the initial investment of the system is relatively large, and the operation is inconvenient.
In summary, we understand thatCondensate Recoverythe method of steam condensate recovery needs to be selected according to the Applications and the amount of condensate. Choosing a suitable condensate recovery method not only simplifies the system design but also fundamentally eliminates problems in system operation and maintenance, ensuring the smooth operation of steam condensate recovery.
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