Three-effect vacuum evaporation system for improving evaporation efficiency of copper sulfate

Abstract

The invention discloses a three-effect vacuum evaporation system for improving evaporation efficiency of copper sulfate. The system comprises a preheating coiler, a liquid incoming pump, a one-effectvapor-liquid separation chamber, a two-effect vapor-liquid separation chamber, a three-effect vapor-liquid separation chamber, a one-effect plate heat exchanger, a two-effect plate heat exchanger, a three-effect plate heat exchanger, a plate condenser, a water ring vacuum pump, a vacuum separation tank, a balance valve, an axial flow pump, a one-effect feeding pump, a two-effect feeding pump, a two-effect discharging pump and a control valve. By adopting the vapor-liquid separation chambers in unique design, the plate heat exchangers reasonable in model selection and a three-effect mixed flowevaporation process, both operating and cleaning are simple and easy to implement, evaporation efficiency is high, and unit consumption of vapor for using copper sulfate raw materials to produce eachton of copper sulfate is lowered by about 45%. Secondary vapor waste heat of each effect can be recycled, so that energy conservation and consumption reduction are realized; secondary vapor condensateis recycled for copper electrolysis production; continuous and automatic three-effect vacuum evaporation is realized by controlling one-effect temperature, two-effect liquid outgoing time and liquidoutgoing proportion.

Description

technical field [0001] The invention relates to the technical field of copper sulfate evaporation, in particular to a three-effect vacuum evaporation system for improving the evaporation efficiency of copper sulfate. Background technique [0002] At present, due to the needs of the production process, in the electrolyte purification process, the removal of copper sulfate by evaporation and crystallization to provide mother liquor for arsenic and nickel removal is the main process. Since the evaporation system needs to consume a large amount of steam, and with the improvement of the degree of refinement and the improvement of product standards, the traditional atmospheric pressure evaporation-cooling crystallization method is used to produce copper sulfate, which has high steam unit consumption, low evaporation efficiency, and secondary steam condensation. Water cannot be recovered, causing heat loss and large factory buildings. Therefore, the traditional atmospheric pressur...

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Problems solved by technology

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a three-effect vacuum evaporation system that improves the eva

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