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High-shear-force grinding reactor

A high-shear, reactor technology, applied in chemical/physical/physical-chemical stationary reactors, applications, inert gas generation, etc., can solve the problems of difficult to control the gap between dynamic and static abrasives, energy loss, etc., and achieve convenient maintenance. , prolong the service life, not easy to block the effect

Inactive Publication Date: 2014-11-19
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of energy loss caused by the difficult control of the gap between the dynamic and static grinding tools in the prior art and the need for "shaft sealing", and provide a high-shear grinding reactor, which is durable Easy maintenance and cleaning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1 (no inert gas protection required, speed ratio = 2, frequency converter is 50Hz, speed = 3000×2 revolutions / min)

[0075] Ultrafine nano-calcium carbonate has a wide range of uses, and its preparation raw materials often use milk of lime and carbon dioxide. The present invention omits the step of preparing milk of lime, and directly prepares it with calcium hydroxide.

[0076] raw material

[0077] Calcium hydroxide (slaked lime, ≥99%) 149.68g

[0078] Carbon dioxide (steel cylinder, 99.8%) 88.2g

[0079] Distilled water 1133.4g

[0080] The equipment parameters used are shown in Table 1 and 2.

[0081] Table 1 Parameters of reaction vessel

[0082] project inner diameter / cm Section / cm 2 Total height H / cm Effective h / cm Volume / L parameter 12 113.1 20 14.00 1.58

[0083] Table 2 Transmission mechanism parameters

[0084] project Motor (r / min) speed ratio Moving shaft (r / min) Movable grinding tool (...

Embodiment 2

[0097] Example 2 (Protected by inert gas, no cooling, speed ratio=4, frequency converter is 50Hz, speed=3000×4rpm)

[0098] nanometer ferric oxide (Fe 3 o 4 ) is a new type of high-function fine inorganic product, and its preparation raw materials are divalent and ferric salts and soluble hydroxides. The present invention adopts equimolar ferrous sulfate, ferric sulfate and sodium hydroxide to react, in order to ensure that the ferrous iron is not oxidized by oxygen in the air during the reaction process, it is prepared under the protection of nitrogen.

[0099] raw material

[0100] Ferrous sulfate heptahydrate (analytically pure, ≥99%) 21.06g

[0101] Ferric sulfate (analytically pure, 99.8%) 67.01g

[0102] Sodium hydroxide (analytically pure, 96%) 27.16g

[0103] Polyvinyl alcohol (PEG4000) solution (analytical grade, 4%) 41.3g

[0104] Distilled water 939.56g

[0105] The equipment parameters used are the same as in Example 1, and the transmission mechanism param...

Embodiment 3

[0126] Example 3 (Change to large reactor, the amount of reactant increases, and all the other conditions are the same as in Example 1)

[0127]Transmission mechanism parameters and reaction vessel parameters are shown in Tables 4 and 5.

[0128]

[0129] Table 4 Transmission mechanism parameters

[0130] project Motor (r / min) speed ratio Movable grinding tool (r / min) Abrasive radius r / m Linear speed m / s Frequency / Hz parameter 3000 2 6000 0.08 50.3 50

[0131] Table 5 Reaction Vessel Parameters

[0132] project inner diameter / cm Section / cm 2 Total height H / cm Effective h / cm Volume / L parameter 20 314.2 40 28 28

[0133] raw material

[0134] Calcium hydroxide (slaked lime, ≥99%) 898.06g

[0135] Carbon dioxide (steel cylinder, 99.8%) 529.18g

[0136] Distilled water 6795.73g

[0137] Steps:

[0138] 1. Equipment installation (such as figure 1 ):

[0139] ① Loosen the upper and lower chuc...

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Abstract

The invention provides a high-shear-force grinding reactor. The high-shear-force grinding reactor comprises a power device, a transmission device, a grinding device, a stand column and a bottom plate, wherein the power device drives the grinding device to work through the transmission device; the transmission device is supported and mounted on the bottom plate through the stand column; a rotary disc in the device is connected with a driving shaft through a shaft sleeve arranged on a center line and is provided with a flow baffling ring; and a preformed hole through which a reactant conveniently enters a grinding gap is formed in a position between the flow baffling ring and the shaft sleeve. By adopting axial grinding, the rotary speed of reaction materials in a reaction container can be greatly accelerated under the driving of a movable grinding tool rotating at high speed; and the movement speed of particles with the same density and great particle diameter and particles with the same particle diameter and small density to a rotary center is accelerated along with the acceleration of the rotary speed according to a fluid dynamics principle, so that the high-shear-force grinding reactor has functions of automatically grading and regrinding the particles in a reaction mixture.

Description

technical field [0001] The invention relates to a chemical reaction preparation device, in particular to a high shear grinding reactor. Background technique [0002] With the development of nanotechnology, people have developed a variety of reactors. Representative ones are: Patent 1 "Mechanochemical Reactor (95111258.9)", Patent 2 "Multipurpose Bubble Liquid Film Reactor (200610033823.X)", Patent 3 "A Vertical Enhanced Polysaccharide Polymer Modified Stirring Ball milling reactor (201220600031.7)", patent 4 "new gas-liquid reactor (201020128547.7)", patent 5 (Japan) "device for continuous dispersion through strong shear force (201080003537.3)", patent 6 "high shear colloid Mill (201120248049.0)", patent 7 "multifunctional grinding machine (200620075999.7)", patent 8 "a high-efficiency colloid mill (201220525057.X)". Among them, patents 1 and 2 and patents 4 to 8 all need to carry out "shaft seal" to the rotating shaft. In this way, to greatly increase the rotating speed a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01J19/14B02C7/08
Inventor 王利亚李森兰王建平李波刘朗陈俊玲
Owner NANYANG NORMAL UNIV
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