High-concentration waste liquid treatment evaporation reactor and waste liquid treatment method

Abstract

The invention relates to a high-concentration waste liquid treatment evaporation reactor which comprises a tank. A stirring shaft with stirring blades is arranged in the tank, a liquid level detectiondevice is mounted in the tank, the stirring shaft is driven by a stirring motor at the top of the tank, the liquid level detection device comprises a floating ball pipe inserted into the tank, a floating ball floating in the floating ball pipe, a scale pipe mounted at the top end of the floating ball pipe and arranged outside the tank and a magnetic induction scale mounted on the outer side of the scale pipe, and a magnetic block capable of moving up and down is arranged in the scale pipe and connected with the floating ball through a connecting rod; the stirring blades are arranged in an up-down separated manner, and stirring blades and the stirring shaft are mounted in an axially sliding manner. The magnetic turning plate type liquid level detection device is adopted, so that the defects that U-shaped liquid level meters cannot realize detection due to crystallization and conventional ultrasonic liquid level meters are inaccurate in detection due to inside liquid agitation can be avoided; the stirring blades capable of floating up and down are adopted, so that stirring resistance can be lowered timely, and stirring effect is improved.

Description

technical field [0001] The invention relates to an evaporator, in particular to an evaporator for treating high-concentration waste liquid. Background technique [0002] Evaporators are widely used in chemical industry, food industry. In the pharmaceutical and other industrial fields, it is mainly used to concentrate dilute solutions to directly produce products or to process concentrated solutions into solid products; to concentrate solutions and recover solvents; to obtain pure solvents, etc. [0003] At present, when the evaporator is used for high-salinity waste liquid, the liquid evaporates completely, and the remaining salt concentrate is discharged. After the discharge, the temperature drops to room temperature and the salt precipitates out. [0004] The application number is 2012203081685, and the name is a patent for a high-efficiency enamel evaporator. In the disclosed technical solution, since the evaporator is an enamel reaction equipment, it is airtight and opa...

AI Technical Summary

Problems solved by technology

[0004] The application number is 2012203081685, and the name is a patent for a high-efficiency enamel evaporator. In the disclosed technical solution, since the evaporator is an enamel reaction equipment, it is airtight and opaque, and the liquid level cannot be displayed; for the convenience of displaying the liquid level, a U-shaped tube is conventionally used , but because the concentrated salt liquid is easy to crystallize and block in the U-shaped tube, the liquid level display is inaccurate; and, because the internal paddle keeps stirring and the page is unstable and fluctuates greatly, it is impossible to use a conventional ultrasonic liquid level gauge Accurate measurement

[0005] In the existing evaporator, the stirring blade has a fixed structure. During the evaporation process, due to the existence of crystals, the stirring resistance of the lower layer is greater than that of the upper layer. The stirring resistance of the fixed stirring blade cannot be adjusted in real time, resulting in poor stirring effect

Images