Evaporator and method for preventing heating chamber from being blocked during evaporation and concentration of sodium permanganate

Abstract

The invention discloses an evaporator and method for preventing a heating chamber from being blocked during evaporation and concentration of sodium permanganate. The evaporator disclosed by the invention comprises a material mixing tank, a feeding pump, a circulation pipe, a forced circulation pipe, a heating chamber, an evaporation chamber, a forced circulation pump and a discharging pump, as well as a sand inlet device connected with the material mixing tank and a sedimentation tank connected with the discharging pump, wherein the circulation pipe is divided into a main circulation pipe and an auxiliary circulation pipe; the feeding pump is connected with the main circulation pipe, the upper end of the main circulation pipe is communicated with one side of the evaporation chamber, the lower end of the main circulation pipe is communicated with the lower end of the heating chamber through the forced circulation pipe, and the upper end of the heating chamber is communicated with the other side of the evaporation chamber; and the lower part of the evaporation chamber is communicated with the upper end of the auxiliary circulation pipe, and the lower end of the auxiliary circulation pipe is connected on the forced circulation pipe and communicated with the forced circulation pipe. The evaporator disclosed by the invention has the advantages of preventing the heating chamber of the evaporator from being blocked, effectively improving the production efficiency and reducing energy consumption and power consumption.

Description

technical field [0001] The invention relates to a method and a device for evaporating and concentrating sodium permanganate, and in particular discloses an evaporator and a method for preventing blockage of a heating chamber during evaporating and concentrating sodium permanganate. Background technique [0002] Due to the further improvement of human requirements for water treatment, the demand for sodium permanganate abroad has increased significantly, and the amount of sodium permanganate exported by my country has increased year by year. And at present domestic when concentrating sodium permanganate dilute solution, owing to containing calcium sulfate, magnesium sulfate in the solution. These two substances are precipitated after reaching saturation with the evaporation and concentration of the feed liquid, and adhere to the wall of the heating tube in the heating chamber of the evaporator to become a scale layer. Initially, the production capacity of the equipment will ...

AI Technical Summary

Problems solved by technology

Labor-consuming, time-consuming and energy-consuming

[0003] In order to solve the above problems, there are some foreign reports about adding solid impurities when concentrated sodium permanganate dilute solution, but no specific implementation is given, and once solid impurities are added to concentrated sodium permanganate dilute solution Not to mention whether the solid impurities will affect the purity of the final product, it will inevitably cause a series of problems such as wear on the evaporator and affect work efficiency.

In addition, the concentration process of dilute sodium permanganate solution has certain particularity and limitations in processing methods and equipment, so once the processing methods and equipment are fixed, it is difficult to make a breakthrough

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