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Crystallizer with rectifying hood

A technology of fairing and crystallizer, applied in the direction of solution crystallization, can solve the problems of complicated calculation, high cost of crystallizer, complex force, etc., and achieve the effects of being conducive to growth, reducing stirring power and uniform flow rate

Active Publication Date: 2015-08-12
CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, foreign W-shaped rectifying cone-bottom crystallizers, whose W-shaped rectifying structure is directly used as a pressure-bearing part, are subject to complex forces and cumbersome calculations. To manufacture the rectifying structure, custom molds are required to meet the design accuracy requirements, which makes the cost of the crystallizer high

Method used

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  • Crystallizer with rectifying hood
  • Crystallizer with rectifying hood
  • Crystallizer with rectifying hood

Examples

Experimental program
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Embodiment 1

[0028] like figure 1 As shown, this embodiment includes a cylinder body 1 and a cone bottom 2, and a conical fairing I5 is built in the lower part of the cone bottom 2; device 4. The cone angle of the conical fairing I5 is 120°, the diameter of the bottom of the conical fairing I5 is 1 times the diameter of the guide tube 3, and the cone generatrix of the conical fairing I5 is a straight side. The top end of the conical fairing I5 is provided with an opening 6 . The cone angle of the cone bottom 2 is 60°, and the bottom is in the shape of a spherical crown. The cylinder 1 is the body of an existing conventional crystallizer. The cylinder body 1, cone bottom 2, conical fairing I5, guide tube 3 and stirring device 4 described in this embodiment are all installed concentrically.

[0029] By ANSYS FLUENT to simulate the crystallizer with fairing in this embodiment, there is almost no dead angle of stirring in the mother liquor crystallization process, such as figure 2 As sh...

Embodiment 2

[0031] like image 3 As shown, this embodiment includes a cylinder body 1 and a cone bottom 2, and a conical fairing II7 is built in the lower part of the cone bottom 2; device 4. The cone angle of the conical fairing II7 is 120°, the diameter of the bottom of the conical fairing II7 is 1 times the diameter of the guide tube 3, and the cone generatrix of the conical fairing II7 is a curved side, and the curved side The radius of curvature is 0.4 times the radius of the cylinder. The top end of the conical fairing II7 is provided with an opening 6 . The cone angle of the cone bottom 2 is 60°, and the bottom is in the shape of a spherical crown. The cylinder 1 is the body of an existing conventional crystallizer. The barrel body 1, the cone bottom 2, the conical fairing II7, the guide tube 3 and the stirring device 4 described in this embodiment are all installed concentrically.

[0032] By ANSYS FLUENT to simulate the crystallizer with a fairing in this embodiment, there i...

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Abstract

A crystallizer with a rectifying hood comprises a barrel and a conical bottom, the rectifying hood shaped in a cone is arranged inside the lower portion of the conical bottom, a flow guiding cylinder is arranged inside the barrel, and a stirring device is arranged inside the flow guiding cylinder. The crystallizer with the rectifying hood is stable in flow pattern, free of stirring dead angle during mother liquid crystallization, beneficial to growing of crystals and higher in stirring efficiency; the cone-shaped rectifying hood not serving as a pressure bearing component can be reconstructed on an existing crystallizer; the crystallizer with the rectifying hood is simple in structure, convenient to manufacture and low in manufacturing cost.

Description

technical field [0001] The invention relates to a crystallizer with a fairing, in particular to a crystallizer with a fairing for crystallizing mother liquor to obtain solid particles. Background technique [0002] In chemical production, there are many processes that require the crystallization of mother liquor to obtain products, such as vacuum salt production, carnallite production of potassium chloride, etc. Mother liquor crystallization generally adopts a crystallizer with a stirring device. The stirring device makes the mother liquor circulate continuously in the crystallizer, produces crystal nuclei and grows continuously, and discharges the crystallizer after reaching the required particle size. Domestic crystallizers widely use the traditional crystallizer with a conical bottom structure with an included angle of about 60° (see Figure 5 ), although its manufacture is simple and cheap, but this structure has a stirring dead angle (see Figure 6 ), which cannot make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02
Inventor 杨晓烽郭立杨灿辉
Owner CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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