A nanoscale calcium carbonate processing device

Abstract

The invention belongs to the field of nanoscale calcium carbonate processing, in particular to a nanoscale calcium carbonate processing device. A nanoscale calcium carbonate processing device includes a base, a support column, a reaction vessel, a sealing cover, a bubbling mechanism, a one-way water inlet and a circulation pipe. The bubbling mechanism divides the carbon dioxide, so that carbon dioxide bubbles are evenly generated at the bottom of the reaction vessel, without considering the problem of uneven distribution of gas along the cross-section due to the large diameter of the reaction vessel, increasing the amount of one-time carbonization reaction and improving production efficiency; At the same time, the bubbling mechanism divides the carbon dioxide, so that the carbon dioxide is evenly distributed in the liquid phase, so that the reaction between the carbon dioxide and the liquid phase is more uniform, the carbon dioxide absorption rate is improved, the reaction is more sufficient, and the time required for the carbonization reaction is reduced.

Description

technical field [0001] The invention belongs to the field of nanoscale calcium carbonate processing, in particular to a nanoscale calcium carbonate processing device. Background technique [0002] In the processing technology of nano-scale calcium carbonate, it is known from the existing production methods that the carbonization methods are divided into: spray carbonization method, tower carbonization method and supergravity carbonization method. [0003] The specific method of the spray carbonization method is as follows: lime is digested with water into a calcium hydroxide suspension, the suspension is adjusted to a certain concentration and temperature, a certain amount of dispersant is added, and then sprayed into the carbonization tower through the spray nozzle, It is in reverse contact with the rising carbon dioxide gas in the tower to generate calcium carbonate particles. The process conditions are: calcium hydroxide emulsion concentration 1.034-1.069 (relative conce...

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Problems solved by technology

[0012] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a nanoscale calcium carbonate processing device. The bubbling mechanism divides carbon dioxide, so that carbon dioxide bubbles are uniformly generated at the bottom of the reaction vessel, without considering that the diameter of the reaction vessel is too large to cause gas The problem of uneven distribution along the cross section increases the amount of one-time carbonization reaction and improves production efficiency; at the same time, the bubbling mechanism divides carbon dioxide, so that carbon dioxide is evenly distributed in the liquid phase, making the reaction between carbon dioxide and liquid phase more uniform, and improving the carbon dioxide production efficiency. The low absorption rate makes the reaction more sufficient and reduces the time required for the carbonization reaction; the automatic air intake mechanism can automatically inject carbon dioxide according to the pressure change caused by the consumption of carbon dioxide in the reaction vessel, so that the carbon dioxide in the reaction vessel maintains At a certain level, no manual operation is required, which is convenient, fast, time-saving and labor-saving; the ultrasonic waves emitted by the ultrasonic generator cause cavitation inside the medium, and the nonlinear movement of the cavitation bubbles and the local high pressure generated by the collapse of the cavitation bubbles make the system The energy of each point in the interior changes, causing large fluctuations in energy, weakening the force between molecules, enhancing the mass transfer movement and collision opportunities between reactant molecules, and strengthening the mixing of gas, liquid, and solid phases. The chemical mechanism can cause microscopic vibration inside the solution, accelerate molecular diffusion, and strengthen the mass transfer process. Therefore, ultrasonic waves can make the liquid phase in a nearly ideal mixing state, improve the conversion rate of the liquid phase, and can effectively strengthen the carbonization reaction.

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