Descaling separation assembly and landfill leachate MVR evaporation device comprising same

Abstract

The invention discloses a descaling separation assembly which comprises a separator sealed tank body, a feed liquid nozzle and a heating pipe, wherein the feed liquid nozzle is arranged in the separator sealed tank body, the heating pipe is matched with the separator sealed tank body for use, the feed liquid nozzle is arranged at the upper part, and the heating pipe is arranged at the lower part and used for receiving feed liquid sprayed by the feed liquid nozzle; inert solid particles and a compressed air pipe which is used for producing air flow to blow the inert solid particles to fluidized state boiling are arranged at the bottom of the separator sealed tank body. By the aid of using of the descaling separation assembly, on-line cleaning can be realized, the equipment can operate for a long time and is not required to be cleaned with other methods, the inner wall of the equipment can be kept to be smooth and clean as new simultaneously, the service life of the equipment is prolonged, and the device has great economic benefit, environmental benefit and social benefit.

Description

technical field [0001] The invention relates to a descaling and separation component and a landfill leachate MVR evaporation device containing the same. Background technique [0002] There are different degrees of fouling problems in the heater of the evaporation concentration device, especially when the medium is sodium chloride, sodium sulfate, sodium hydroxide, magnesium chloride, magnesium sulfate and other inorganic salts, and landfill leachate treatment (high concentration organic wastewater) , Sewage treatment, food, sugar, papermaking, seawater desalination, oil field wastewater, diaphragm caustic soda, ionic membrane caustic soda and other evaporation concentration, crystallization heaters, due to the precipitation of dissolved substances in the feed liquid, the scaling problem is very prominent. Scaling is a common phenomenon in evaporative crystallization devices. Scaling of evaporative crystallization devices not only reduces the effective working volume of the e...

AI Technical Summary

Problems solved by technology

Scaling is a common phenomenon in evaporative crystallization devices. Scaling of evaporative crystallization devices not only reduces the effective working volume of the equipment, increases thermal resistance and flow resistance, but also reduces the heat transfer coefficient of the heating tube and reduces production capacity. Serious Scaling will also stop production, shorten effective production time, reduce equipment life and even damage equipment, and increase raw material and energy consumption

[0003] After scaling, two methods of mechanical cleaning or chemical cleaning are generally used (according to different scales, water-soluble method, pickling method, alkali boiling, mechanical descaling, corrosion inhibitor for pickling, ultrasonic cleaning and other methods can be used) , frequent mechanical cleaning will cause irreversible damage to the equipment, while chemical cleaning is easy to cause corrosion to the equipment, and will produce a large amount of cleaning wastewater containing chemical components, which will cause great pressure on the environment

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