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Pre-nucleation reactor of nanometer calcium carbonate and preparation technology of the nanometer calcium carbonate

A nano-calcium carbonate and a preparation process technology are applied to the crystal nucleus preforming reactor of nano-calcium carbonate and the field of preparation thereof, which can solve the problems of insignificant effect and easy blocking of the crystal nucleus preforming device, and achieve a wide range of process control parameters. , not easy to block, the effect of small particle size

Inactive Publication Date: 2014-02-26
宜兴天力化工纳米科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this preformation reactor has no obvious effect on the reaction of the gelation phenomenon in the later stage; and for the gelation phenomenon in the early stage, the crystal nucleus preformer is easy to block and is not easy to quickly destroy the gelation phenomenon

Method used

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  • Pre-nucleation reactor of nanometer calcium carbonate and preparation technology of the nanometer calcium carbonate

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing.

[0025] The crystal nucleus preforming reactor provided by the invention includes a jet flow section and a gel breaking section, and the jet flow section and the gel breaking section are sealed and connected by screws. A specific embodiment of the present invention is as figure 1 As shown, there is a slurry inlet 1 at the front end of the jet section, an air inlet 2 at the side, and a bell mouth at the rear end, and the airtight connection between the bell mouth and the gel breaking section.

[0026] Such as figure 2 As shown, the gel breaking section can be a schematic diagram of a SK type static mixer with a slurry outlet 3 opened. Its internal units such as image 3 As shown, it is a spiral plate twisted 180° or 270°.

[0027] Such as Figure 4 As shown, the gel breaking section can also be a schematic diagram of an SD type static mixer with a slurry outlet 3 opened...

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Abstract

The invention provides a pre-nucleation reactor of nanometer calcium carbonate and a preparation technology of the nanometer calcium carbonate. The pre-nucleation reactor comprises a jet flow section and a gel destroy section. The front end of the jet flow section is provided with a slurry inlet and a gas inlet, and the tail end of the jet flow section is provided with a flared opening. The flared opening and the gel destroy section are connected in a sealing manner. The gel destroy section relates to an SK-type static mixer or an SD-type static mixer and is provided with a slurry outlet. Gel can be destroyed rapidly and effectively in the gel destroy section and fluid passages are not liable to block. The jet flow section has an obvious function on gelatinization of reactions, and therefore temperatures, concentrations and other technology control parameters in a subsequent carbonization kettle have wide ranges.

Description

technical field [0001] The invention relates to the field of preparation of nano-calcium carbonate, in particular to a reactor for pre-forming crystal nuclei of nano-calcium carbonate and a preparation process thereof. Background technique [0002] The method of existing suitability for industrialized production nano-calcium carbonate mainly is to adopt the intermittent bubbling stirring type carbonization reaction method. It pumps the slurry containing calcium hydroxide into the carbonization reaction kettle in advance, and then turns on the kiln gas under stirring to carry out the carbonization reaction. The particle size control agent is added before the carbonization reaction or during the carbonization process, so that the nano calcium carbonate product can be obtained. [0003] But, because the carbonization reaction belongs to the exothermic reaction, the inaccurate control of the reaction temperature is caused, and the fluctuation of the carbon dioxide gas concentr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18B82Y40/00B01J10/00B01J19/26
Inventor 张业红
Owner 宜兴天力化工纳米科技有限公司
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