Energy-saving, scaling-free and anti-corrosion MVR low-temperature evaporation system for high-salinity wastewater treatment and use method thereof

Abstract

The invention discloses an energy-saving, scaling-free and anti-corrosion MVR low-temperature evaporation system for high-salinity wastewater treatment and a using method thereof, relates to the technical field of MVR low-temperature evaporation systems.The problems that an existing MVR low-temperature evaporation system is prone to scaling and blocking, normal operation and efficiency are affected due to insufficient corrosion resistance of equipment, energy consumption is increased, and the service life is short are solved. A condensate water heater is arranged at the front end of the electric heater; a heat exchanger is arranged at an outlet in the front end of the condensate water heater; the heat exchanger is formed by connecting one or more than one heat exchanger in parallel, and an evaporation separator is arranged at an outlet in one side of the heat exchanger; the evaporation separator is formed by connecting one or more evaporation separation devices in series; the evaporation separator comprises evaporated mother liquor, a steam separation chamber, a demister, a secondary steam outlet, a separated liquid outlet and a concentrated liquid outlet, a compressor is arranged at the front end of the secondary steam outlet, and a condensate water tank is arranged at the lower end of the heat exchanger.

Description

technical field [0001] The invention relates to the technical field of MVR low-temperature evaporation systems, in particular to an energy-saving, non-scaling, anti-corrosion, and high-salt wastewater treatment MVR low-temperature evaporation system and a method of use thereof. Background technique [0002] The MVR evaporation system uses the secondary steam generated by itself as heating steam. The working process is that the low-temperature and low-pressure steam is compressed by the compressor and becomes high-temperature, high-pressure steam, and then enters the heat exchanger for heat exchange. The evaporation process makes full use of the MVR itself. The energy of the secondary steam generated, thereby reducing the demand for external energy, even in places where there is no steam supply, as long as there is power supply, the evaporation system can also work normally. [0003] Generally, high-salt wastewater is treated through the MVR low-temperature evaporation system...

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Problems solved by technology

[0004] The object of the present invention is to provide an energy-saving, non-scaling, anti-corrosion, high-salt wastewater treatment MVR low-temperature evaporation system and its use method to solve the problem of scaling and clogging in the existing MVR low-temperature evaporation system proposed in the background technology. Insufficient corrosiveness affects normal operation and efficiency, increases energy consumption and shortens service life

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