Closed type condensate water recovery device

Abstract

The invention discloses a closed type condensate water recovery device, belongs to the device for supplying water to a boiler, and particularly relates to a device for returning condensate water back to the boiler. The closed type condensate recovery device is characterized in that a condensate water outlet is formed in the bottom of a condensate water tank with a condensate water inlet, a gas-water separation room is arranged at the top of the condensate water tank, and a liquid meter and a liquid sensor are arranged on the lateral face of the condensate water tank; an anti-rotation device is mounted at the bottom, which is close to a condensate water outlet, inside the tank body; a secondary flashing device is connected with the condensate water inlet; the condensate water outlet is connected with a water pump through a pipeline; a cavitation eliminator is connected with the other end of the water pump; the cavitation eliminator is provided with a pipeline which is connected with a top gas outlet of the condensate water tank; the recovery device is provided with a control system. According to the closed type condensate water recovery device provided by the invention, the specific cavitation eliminator connected with the water pump is adopted, so that the closed recovery of the condensate water is realized, so that vapor generated by secondary flashing of the condensate water is fully recycled, energy and water resources can be saved; the energy can be fully utilized. Therefore, the recycle rate of the energy is up to 95%.

Description

technical field [0001] The invention belongs to a device for supplying water to a boiler, in particular a device for returning condensed water to a boiler. Background technique [0002] As a heat carrier, steam is widely used in power generation, petroleum, chemical industry, printing and dyeing, papermaking, textile, brewing, rubber, ceramics and other industrial fields. After the steam releases the latent heat of vaporization in various steam-using equipment, it becomes saturated condensed water at almost the same temperature and pressure. Since the operating pressure of the steam is greater than the atmospheric pressure, the heat of the condensed water can reach 20% of the total heat of the steam- 30%, and the higher the pressure and temperature, the more heat the condensed water has, and the greater the proportion of the total heat of the steam. It can be seen that 100% recovery of the heat of condensed water and effective utilization has great energy-saving potential. ...

AI Technical Summary

Problems solved by technology

[0006] With so many downsides to open recycling equipment, why not seal it up? It turns out that condensed water itself is a two-phase flow of soda and water. High-temperature condensed water can easily cause cavitation damage known as "pump cancer". Since the cavitation damage of the condensed water pump cannot be solved, in the past, the water tank can only be connected to the atmosphere, and the secondary The steam is released to fully cool the condensed water, which wastes energy, and only a small amount of water and heat energy can be recovered, and what is more, it is completely drained.

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