Device for adding solid organic surface treatment agent for titanium dioxide

Abstract

The invention discloses a damping device. A device for adding a solid organic surface treatment agent for titanium dioxide comprises a steam powder machine feeding screw, a steam powder machine and a configuration storage tank, wherein a first feed port is formed in the steam powder machine feeding screw; a solid organic surface treatment agent feeding screw is connected onto the first feed port; the solid organic surface treatment agent feeding screw is driven by a solid organic surface treatment agent feeding screw variable-frequency motor; a second feed port is further formed on the solid organic surface treatment agent feeding screw. The solid organic surface treatment agent entering the steam powder machine from the configuration storage tank originally directly enters the steam powder machine feeding screw from the solid organic surface treatment agent feeding screw, so that the solid organic surface treatment agent and the titanium dioxide are primarily mixed in the steam powder machine feeding screw and enter the steam powder machine together, a series of problems caused by dissolving the solid organic surface treatment agent into water and conveying the solid organic surface treatment agent into the steam powder machine are fundamentally eliminated , and new functions are increased.

Description

technical field [0001] The invention belongs to the field of chemical production, in particular to a device for adding a solid organic surface treatment agent for titanium dioxide. Background technique [0002] The production of titanium dioxide products mainly includes two different processes: sulfuric acid method and chlorination method. The crude titanium dioxide obtained in the production process of these two processes needs to be surface modified to obtain titanium dioxide with good dispersibility, strong weather resistance and other application properties. finished product. [0003] Generally, the surface modification includes inorganic surface modification and organic surface modification. Inorganic surface modification is to chemically deposit one or more layers of uniform colorless or white inorganic oxide film on the surface of titanium dioxide particles, the main purpose is to improve the application performance of titanium dioxide such as weather resistance, glo...

AI Technical Summary

Problems solved by technology

[0005] The existing adding device has the following defects: First, when the solubility of the organic surface treatment agent in water is low at room temperature, it needs to be dissolved by heating up, and at the same time, the dissolved organic surface treatment agent needs to be continuously added with steam to keep it warm, which wastes energy

[0007] Third, when the climate changes greatly, especially in winter, not only the energy consumption of steam is wasted, but also the crystallization of the organic surface treatment agent is easily caused, the pipeline and the metering pump are blocked, and the organic surface modification of titanium dioxide cannot be carried out continuously and stably, resulting in Unstable quality; at the same time, during the crystallization cleaning process, the workload is large and the organic surface treatment agent is wasted, which affects the normal production and the output is limited

[0008] Fourth, the crystallization of the organic surface treatment agent causes fluctuations in the concentration, which brings difficulty to the stable control of the amount of the organic surface treatment agent added

[0010] Sixth, due to various reasons, the phenomenon of easy clogging of the liquid treatment agent inlet is a common problem that is difficult to solve at home and abroad. The clogging of the import makes it impossible to carry out organic surface modification, resulting in a decrease in the performance of the finished product such as dispersibility

[0011] Seventh, the water in the diluted organic surface treatment agent volatilizes under the high temperature state of the steam powder, and the dilution water increases the energy consumption of the steam

[0012] Water-insoluble organic surface treatment agents cannot be used

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