High-salt organic wastewater heat pump evaporation coupled heat pump drying intensive treatment apparatus and using method thereof

Abstract

The invention provides a high-salt organic wastewater heat pump evaporation coupled heat pump drying intensive treatment apparatus. The apparatus comprises an integrated evaporator, a heat exchange tube array is arranged at the bottom of the inner chamber of the integrated evaporator, a perforated tube and a swirling demister are mounted at the upper part of the inner chamber of the integral evaporator, the perforated tube is located below the swirling demister, the liquid inlet of the perforated tube is communicated with a defoaming port in the outer shell of the integrated evaporator, a shielding cover is mounted at a manhole in the upper part of the outer side surface of the integrated evaporator, and a raw material feeding port is arranged in the middle part of the outer side surface of the integrated evaporator. The main devices of the high-salt organic wastewater heat pump evaporation coupled heat pump drying intensive treatment apparatus are the integrated evaporator, a steam compressor and a hollow blade dryer, so the apparatus has the advantages of high intensification degree, small occupied area, low investment cost, few control points, high automation degree, simplicityin operation, stability in operation, labor cost saving, and realization of reducing the running cost by full utilization of secondary steam.

Description

technical field [0001] The invention relates to the technical field of high-salt organic wastewater drying, in particular to an intensive treatment device for high-salt organic wastewater heat pump evaporation coupling heat pump drying. Background technique [0002] High-salt organic wastewater comes from the production process of coal chemical industry, metallurgy, pesticide, pharmaceutical, seafood processing and other industries. The waste water has a high salt content, and the total dissolved solids mass fraction exceeds 1%; the organic pollutant content is high, and the COD concentration is 1000-100000mg / L. Compared with ordinary wastewater, high-salt organic wastewater contains a large amount of inorganic salts, which have an inhibitory effect on microorganisms and are difficult to treat with biochemical methods. [0003] At present, evaporation is the most commonly used method for the treatment of high-salt organic wastewater. After the high-salt organic wastewater ...

AI Technical Summary

Problems solved by technology

After the high-salt organic wastewater is desalinated by evaporation and crystallization, the salt content and organic matter concentration of the effluent are greatly reduced, and can be directly discharged, or reused after advanced treatment, to build a zero discharge system; but the conventional high-salt organic wastewater evaporation and crystallization system is more complicated , the equipment is numerous, the operation is difficult, and the system is difficult to operate stably; in addition, after the high-salt organic wastewater is evaporated and crystallized, the high-concentration mother liquor containing a large amount of organic matter is returned to the system, and the organic matter is continuously concentrated and accumulated, which will cause the boiling point to rise, foaming, running out, Scaling and other problems, the evaporation system cannot operate normally, and the high-concentration mother liquor needs to be discharged regularly and quantitatively

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