Method and device for improving the action effect of ultrasound in the replacement process

Abstract

A method and device for improving the effect of ultrasonic waves in the replacement process. An ultrasonic cleaning device is installed inside or outside the replacement chamber, and the ultrasonic waves emitted by the ultrasonic cleaning device prevent the deposition of solid-phase products of the replacement reaction on the surface of the solid-phase reducing agent, thereby realizing solid-phase products. A displacement reaction that is efficiently separated from a solid-phase reducing agent; the displacement reaction environment is carried out under a slight negative pressure environment, and negative pressure is used to prevent the gas-phase product of the displacement reaction from forming a gas film on the inner wall of the closed displacement chamber and the surface of the solid-phase reducing agent Effect, realize the guarantee of ultrasonic effect and clean production. With the help of the ultrasonic cleaning function, the present invention efficiently removes the displacement products on the surface of the solid-phase reductant under a slight negative pressure displacement reaction environment, fully exposes the fresh active surface of the solid-phase reductant, accelerates the process of the displacement reaction, and maximizes the use of the solid-phase reductant. Reducer effect.

Description

Technical field [0001] The invention relates to a replacement method and device of a wet process, in particular to a method and a device for improving the effect of ultrasonic waves in the replacement process, belonging to the technical field of wet processes. Background technique [0002] In the wet process, the conversion of ionic elements in solution to the crystalline state by means of displacement reactions is a common industrial method. The solid-phase reducing agent used in the displacement reaction usually includes powder and plate. Under the condition of using powdery reducing agent, when the particle size does not meet the uniformity requirements, there is often a certain amount of residual powdery reducing agent entering the solid phase replacement product, resulting in waste of reducing agent; Under low conditions, because the scouring force of the solution to be replaced on the surface of the replacement plate is not enough, the solid-phase replacement product ...

AI Technical Summary

Problems solved by technology

Under the condition of using powdery reducing agent, when the particle size does not meet the uniformity requirements, there is often a certain amount of residual powdery reducing agent entering the solid phase replacement product, resulting in waste of reducing agent; Under certain conditions, because the scouring force of the solution to be replaced on the surface of the replacement plate is not enough, the solid phase replacement product is easy to deposit on the surface of the replacement plate, resulting in a significant reduction in the effective replacement surface area of ​​the replacement plate

The method, device and application of improving the activity of zinc powder with ultrasonic wave (ZL200810031128.9) proposed the method of improving the surface activity of powdered reducing agent with ultrasonic wave, although the consumption of zinc powder was reduced by 30-50%, there was still a small amount of zinc The powder enters the solid-phase replacement product; especially with the substantial increase in the replacement efficiency, the gas-phase product produced by the replacement reaction also increases. Once the gas-phase product forms a gas film effect on the inner surface of the replacement chamber, the new gas film will greatly weaken the ultrasonic waves. effect

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