Novel vacuum evaporator

Abstract

The invention relates to a novel vacuum evaporator. The evaporator includes an evaporation tank, a cover, a condensate tank and a vacuum pump. The evaporation tank is connected with the cover through a flange, the middle connection part is provided with PTFE, an anti-fouling layer coats on the inner wall of evaporator, the anti-fouling layer is formed by spraying a synthesized paint containing magnesium, carbon, talc, fluorocarbon compound and F46 tetrafluoroethylene-hexafluoropropylene copolymer, so as to effectively prevent fouling of the inner wall of the evaporation tank, reduce fouling thermal resistance, and improve evaporation efficiency. A foam removal device is arranged below the connection of the evaporation tank and the cover to prevent steam from entering the cover carrying liquid foam, and effectively prevent fouling and corrosion of the cover ad condensate tank. The vacuum pump is controlled by a computer, so as to improve the degree of automation equipment and prolong the service life of the equipment. The evaporator provided by the invention is more perfect in structure, enhances the evaporation efficiency, has simple operation, reduces operation cost, saves energy, greatly improves the production efficiency, and effectively improves the degree of automation of the equipment, and prolongs the service life of the equipment.

Description

technical field [0001] The invention relates to a novel vacuum evaporator, which belongs to the technical field of evaporation. Background technique [0002] The evaporator is an important chemical equipment, which is often used for the separation and concentration of products, and is also widely used in the field of wastewater treatment. The wastewater produced by the industrial production of vanadium oxide contains acidic wastewater such as vanadium and chromium. The vanadium and chromium are reduced through treatment, and then concentrated by evaporation for further treatment. Vacuum evaporation can effectively reduce the boiling point of waste water. In order to maintain the vacuum of the system, the sealing performance of the evaporator is very important. For example, the utility model patent published on September 9, 2010: evaporator, patent number: 201020522232.0, in The connection between the evaporating tank and the cover is provided with a polytetrafluoroethylene ...

AI Technical Summary

Problems solved by technology

Vacuum evaporation can effectively reduce the boiling point of wastewater. In order to maintain the vacuum of the system, the sealing performance of the evaporator is very important. For example, the utility model patent published on September 9, 2010: Evaporator, patent number: 201020522232.0, in The connection between the evaporating tank and the cover is provided with a polytetrafluoroethylene sealing ring, so that the sealing performance of the evaporating tank is good, and it is cleaner and safer. The disadvantage is that the waste water is easy to scale in the evaporating tank, and the steam carries a certain amount of water. A large amount of liquid foam enters the condensation tank, which will easily cause corrosion and scaling of the condensation tank

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