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A mechanical crystallizer for potassium salt industry

A technology for crystallizers and industrial use, applied in the field of mechanical crystallizers for potassium salt industry, can solve problems such as the inability to separate crystallized circulating slurry from crystallized products, and achieve improved mass concentration and crystallizer throughput, increased concentration, and good crystallization effect of effect

Active Publication Date: 2017-08-25
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

[0009] The technical problem to be solved by the present invention is to overcome the deficiency that the crystallization circulation slurry and the crystallization product cannot be relatively separated in the existing potassium salt crystallizer, and provide a kind of raw material with strong adaptability, which can increase the crystal particle size and improve the production efficiency of the crystallizer. , A mechanical crystallizer for potassium salt industry that reduces the entrainment rate of raw materials in underflow crystallization products

Method used

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  • A mechanical crystallizer for potassium salt industry

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] refer to figure 1 , the present embodiment includes a crystallizer body 1, an outer cylinder 3, a guide cylinder 4, a feed baffle 5, a main stirring device 6, a bowl-shaped baffle 7 and a discharge stirring device 9, the outer cylinder 3, the guide The cylinder 4, the feeding baffle plate 5, and the bowl-shaped baffle plate 7 are fixedly connected to the crystallizer body 1 by welding, and the main stirring device 6 and the discharge stirring device 9 are connected to the crystallizer body 1 through brackets and bearings. The upper end of the crystallizer body 1 is provided with a mother liquor overflow port 2, and the bottom is provided with a discharge port 10. The bowl-shaped baffle 7 is located directly below the guide tube 4. There are material communicating holes 8.

[0025] In this embodiment, the angle between the hypotenuse of the bowl-shaped baffle 7 and the horizontal is 32°, the diameter of the upper end of the bowl-shaped baffle 7 is larger than the diamet...

Embodiment 2

[0038] The difference between this embodiment and embodiment 1 is:

[0039] 1) The cylinder at the upper end of the crystallizer body has a diameter of ￠6m and a height of 2.5m, and the angle between the conical hypotenuse and the horizontal at the lower end is 45° and a height of 2.6m;

[0040] 2) The diameter of the upper end of the trumpet-shaped outer cylinder is ￠4.8m, and the height is 0.48m;

[0041] 3) The diameter of the upper end of the trumpet-shaped guide tube is ￠2.4m, the angle between the hypotenuse and the horizontal is 45°, and the height is 2.4m; the diameter of the lower end cylinder is ￠1.2m, and the height is 1.5m;

[0042] 4) The diameter of the feeding cylinder baffle is ￠2.0m, and the height is 0.48m;

[0043] 5) The bottom edge of the mother liquor overflow hole is 0.4m from the upper end of the crystallizer body;

[0044] 6) The upper diameter of the bowl-shaped baffle is ￠3.0m, the angle between the hypotenuse and the horizontal is 45°, the bottom ...

Embodiment 3

[0050] The difference between this embodiment and embodiment 1 is:

[0051] 1) The cylinder at the upper end of the crystallizer body has a diameter of ￠6m and a height of 2.5m, and the angle between the conical hypotenuse and the horizontal at the lower end is 45° and a height of 2.6m;

[0052] 2) The diameter of the upper end of the trumpet-shaped outer cylinder is ￠4.8m, and the height is 0.48m;

[0053] 3) The diameter of the upper end of the trumpet-shaped guide tube is ￠2.4m, the angle between the hypotenuse and the horizontal is 45°, and the height is 2.4m; the diameter of the lower end cylinder is ￠1.2m, and the height is 1.5m;

[0054] 4) There is a ring-shaped heating coil on the outside of the trumpet-shaped guide tube;

[0055] 5) The diameter of the feeding cylinder baffle is ￠2.0m, and the height is 0.48m;

[0056] 6) The bottom edge of the mother liquor overflow hole is 0.4m from the upper end of the crystallizer body;

[0057] 7) The upper diameter of the bo...

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Abstract

The invention relates to a mechanical crystallizer for sylvite industry. The mechanical crystallizer for sylvite industry comprises a crystallizer body, an outer barrel, a guide cylinder, a feeding baffle plate, a main stirring apparatus, a bowl-shaped baffle plate and a discharged material stirring device, wherein the outer barrel, the guide cylinder, the feeding baffle plate and the bowl-shaped baffle plate are fixedly connected with the crystallizer body, the main stirring apparatus and the discharged material stirring device are connected with the crystallizer body by a support and a bearing, a mother solution overflow opening is formed at the upper end of the crystallizer body, a discharge hole is formed at the bottom of the crystallizer body, the bowl-shaped baffle plate is arranged just under the guide cylinder, and the bottom of the bowl-shaped baffle plate is of an arched-shaped structure which is high in the middle and low at the periphery and is provided with material communication holes at the periphery. The mechanical crystallizer is used for crystallization production of potassium chloride and potassium sulfate and makes the feeding size of raw materials be increased to 8mm, circulating paste for crystallization is relatively separated from crystallized products, the mass concentration of the circulating paste and the handling capacity of the crystallizer can be effectively increased, the particle size of the crystallized products is increased, the entrainment rate of the raw material in the crystallized products is reduced and good crystallization effect is achieved.

Description

technical field [0001] The invention relates to a mechanical crystallizer for potassium salt industry, in particular to a mechanical crystallizer for potassium salt industry which optimizes the circulating flow direction of slurry and improves the crystallization discharge condition. Background technique [0002] Mechanical crystallization is widely used in chemical, food, pharmaceutical, metallurgical and other industries. Commonly used crystallizers include forced external circulation type (FC type) crystallizer, particle size classification type (Oslo type) crystallizer, DTB type crystallizer, DP type Crystallizer, Messo type turbulent crystallizer. [0003] FC type crystallizer is composed of crystallization chamber, circulation pipe, circulation pump, heat exchanger and so on. The crystallization chamber has a conical bottom. After the crystal slurry is discharged from the conical bottom, it is pumped through the heat exchanger with an axial flow circulation pump throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D9/02
CPCB01D9/00
Inventor 甘顺鹏季荣汤建良卢志斌胡勇蒋世鹏于海
Owner CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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