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Method and system for spray carbonation of nanometer calcium carbonate

A technology of nano-calcium carbonate and spray carbonization, which is applied in chemical instruments and methods, calcium carbonate/strontium/barium, calcium/strontium/barium compounds, etc., which can solve problems such as low production efficiency, high equipment cost, and uneven particle size distribution , to achieve the effect of improving efficiency, improving production efficiency and increasing specific surface area

Inactive Publication Date: 2019-10-22
ENPING YANYI NEW MATERIALS CO LTD
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Problems solved by technology

[0007] Aiming at the problems of uneven particle size distribution, low production efficiency and high equipment cost in the existing spray carbonization technology, the present invention provides a method and system for spray carbonization of nano-calcium carbonate

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  • Method and system for spray carbonation of nanometer calcium carbonate
  • Method and system for spray carbonation of nanometer calcium carbonate

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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] The embodiment of the present invention discloses a nano-calcium carbonate spray carbonization method, comprising the following steps:

[0030] The calcium hydroxide slurry is pumped into the jet carbonizer, and the jet carbonizer is provided with a diameter-reducing part, and the negative pressure generated by the calcium hydroxide slurry passing through the diameter-reducing part at high speed is used to suck carbon dioxide gas for mixing, and the inhalation The carbon dioxide gas atomizes and disperses the calcium hydroxide slurry, and the calcium hydroxide is ...

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Abstract

The invention provides a method for spray carbonation of nanometer calcium carbonate in order to solve the problems of uneven particle size distribution, low production efficiency and high device costin existing spray carbonation technologies. The method comprises the following operating steps: a calcium hydroxide slurry is pumped into a spray carbonizer, a reducing portion is arranged in the spray carbonizer, and the calcium hydroxide slurry and a carbon dioxide gas sucked by a negative pressure generated by the reducing portion are mixed at a high speed; and the obtained gas-liquid mixtureformed by the spray carbonizer is introduced into a bubbling tank by an extension tube, the extension tube is inserted to a position below the liquid level in the bubbling tank, and the unreacted carbon dioxide gas is bubbled in the bubbling tank. The invention also discloses a system for spray carbonation of nanometer calcium carbonate. The method for spray carbonation of nanometer calcium carbonate ensures the dimensional consistency of the nanometer calcium carbonate, reduce the proportion of particles with too large or too small particle sizes and improves the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of nano-calcium carbonate preparation, and in particular relates to a nano-calcium carbonate spray carbonization method and system. Background technique [0002] The carbonization process is very important in the production process of nano calcium carbonate. Crystallization control technology includes pure process control technology and additive control technology. The production of nano calcium carbonate in Japan is mainly based on process control technology, while Germany and other European countries are mainly based on additive control technology. Simple and backward carbonization equipment requires many and strict process control parameters, and a slight fluctuation will affect the shape and size of the particles. However, in the actual production process, there are many process conditions, such as: the content and flow of carbon dioxide in the tail gas of the lime kiln, the change of the weather and am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18B01J4/00B01J19/00B01J19/26
CPCC01F11/181B01J19/26B01J19/00B01J4/004B01J4/001B01J2204/002
Inventor 潘文甄兴新
Owner ENPING YANYI NEW MATERIALS CO LTD
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