High-efficiency and energy-saving multi-effect evaporator system

Abstract

The invention provides a high-efficiency and energy-saving multi-effect evaporator system which comprises a multi-effect evaporation set, a condensing tank and a circulation pool, wherein the multiple-effect evaporation set comprises series-connected evaporators with more than two effects, each evaporator is provided with a feeding hole, a discharging hole, a steam inlet and a steam outlet; the feeding hole of the first-effect evaporator is a general feeding hole of the evaporation set, a steam inlet of the first-effect evaporator is a general steam inlet of the evaporation set, a discharging hole of a final-effect evaporator is a total discharging hole of the evaporation set, a steam outlet of the final-effect evaporator is a general steam outlet of the evaporation set, a discharging hole of the former-effect evaporator is communicated with a feeding hole of a second-effect next-effect evaporator, a steam outlet of the former-effect evaporator is communicated with a steam inlet of the next-effect evaporator, the condensing tank is communicated with the general steam outlet, and the circulating pool is communicated with the condensing tank. The multi-effect evaporator system disclosed by the invention is high in efficiency, energy-saving, and good in adaptability. The high-efficiency and energy-saving multi-effect evaporator system can be used for treating high-salt content wastewater.

Description

technical field [0001] The invention relates to the field of material separation, in particular to a high-efficiency energy-saving evaporation desalination concentration system. Background technique [0002] Chemical, electroplating, rare earth smelting and other enterprises will produce a large amount of wastewater in the production process. The wastewater has complex components and contains various heavy metal salts, benzene, aldehydes, etc. Because these wastewaters contain a large amount of inorganic salts, they can cause dehydration and rupture of cells, which are toxic to organisms and can lead to the death of organisms. Therefore, high-salt wastewater must be treated before it can be discharged. [0003] At present, there are mainly biochemical methods and physicochemical methods for the treatment of saline wastewater at home and abroad. The biochemical method reduces the concentration of inorganic salts by diluting high-salt wastewater, and then enters the biochemi...

AI Technical Summary

Problems solved by technology

[0004] However, the water quality of high-salt wastewater fluctuates greatly, and the growth of some protozoa and filamentous bacteria will be inhibited. Therefore, the direct use of biochemical methods to treat high-salt wastewater will face problems such as large treatment facilities, high investment and operating costs, etc.

However, physical and chemical methods such as reverse osmosis, ion exchange, and electrolysis are still in the experimental stage, and the treatment costs are relatively high, and they are not yet mature from the perspective of economic technology.

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