Preparation device and preparation method of environment-friendly composite concrete water reducing agent

Abstract

The invention relates to the technical field of concrete water reducing agent preparation, and discloses a preparation device and a preparation method of an environment-friendly composite concrete water reducing agent. The device comprises a reaction kettle, which is provided with an auxiliary material feeding mechanism, wherein the auxiliary material feeding mechanism comprises a first heat exchange mechanism and three second heat exchange mechanisms which are sequentially connected, the first heat exchange mechanism is located above a reaction liquid level, the three second heat exchange mechanisms are located below the reaction liquid level, the three second heat exchange mechanisms are spaced in the circumferential direction and the axial direction of the reaction cavity, a first flow channel is formed in the first heat exchange mechanism, a second flow channel is formed at the second heat exchange mechanism, and the lengths of the second flow channels at the three second heat exchange mechanisms are gradually increased in an auxiliary material feeding direction. Through the structure, the temperature difference between the auxiliary materials added into the reaction tank and the reaction liquid in the reaction tank is minimum, so that the situation that the local temperature fluctuation of the position where the auxiliary materials are added into the reaction liquid is large, and consequently preparation of the water reducing agent is affected is avoided.

Description

technical field [0001] The invention relates to the technical field of concrete water-reducer preparation, in particular to an environment-friendly composite concrete water-reducer preparation device and a preparation method. Background technique [0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete basically unchanged. Most of them are anionic surfactants, such as lignosulfonate, naphthalenesulfonate formaldehyde polymer, etc. After being added to the concrete mixture, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture; or reduce the unit cement consumption and save cement. [0003] The temperature of the concrete water reducer needs to be well controlled during the preparation process. In the prior art, the water reducer is generally prepared in a reactor, and the temperature is mostly adjusted by electric ...

AI Technical Summary

Problems solved by technology

At present, in the preparation process of the water reducer, different auxiliary materials are added to the reactor. Due to the temperature difference between the temperature of these auxiliary materials and the temperature of the reaction liquid in the reactor, the direct addition of auxiliary materials to the reaction liquid will lead to the addition of The temperature difference between the temperature of the reaction liquid at the auxiliary material and other parts of the reaction liquid is large, so that the local temperature fluctuation of the reaction liquid is large, thus affecting the preparation of the water reducing agent

Images