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Cooling equipment for seed precipitation tank

A technology of slotting and equipment, which is applied in the preparation of alkali metal aluminate/alumina/aluminum hydroxide, sustainable manufacturing/processing, climate sustainability, etc., which can solve the problem of low heat exchange efficiency and reduce solution flow resistance, etc. problem, to achieve the effect of improving productivity, reducing resistance, and facilitating crystallization

Active Publication Date: 2014-01-29
SHANDONG BEICHEN MECHANICAL & ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the low heat exchange efficiency of the existing sub-tank cooling equipment, the present invention provides a sub-tank cooling equipment, which uses an immersion heat exchanger to save power and occupy space, and adopts a 45-degree inclination The installation reduces the flow resistance of the solution, facilitates the crystallization of aluminum hydroxide and improves the output rate

Method used

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  • Cooling equipment for seed precipitation tank
  • Cooling equipment for seed precipitation tank
  • Cooling equipment for seed precipitation tank

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Embodiment 1

[0023] Embodiment 1, a seed sub-tank cooling equipment, including a seed sub-tank 1, a stirring device 4 installed on the central axis 3 of the seed sub-tank, characterized in that: at least 3 submerged heat exchangers 2 are distributed in a circular array Around the stirring device, the angle between the main central surface of the submerged heat exchanger and the central axis of the seed division tank is 45 degrees.

Embodiment 2

[0024] Embodiment 2, a seed sub-tank cooling equipment, including a seed sub-tank 1, a stirring device 4 installed on the central axis 3 of the seed sub-tank, characterized in that: at least three submerged heat exchangers 2 are distributed in a circular array Around the stirring device, the angle between the main central surface of the submerged heat exchanger and the central axis of the seed division tank is 45 degrees. The immersion heat exchanger is a fully welded plate heat exchanger, which consists of a front tube box 5 and a rear tube box 7 with water inlets 8 and water outlets 9, and a plate bundle 6 fixed between the front and rear tube boxes. The front and rear tube boxes are cylindrical bodies composed of tube plates 14 and multiple arc plates 10, with blocking plates 12 welded at both ends, and connecting arc plates and tubes welded between two adjacent arc plates. The dividing partition 11 of the plate, the sewage outlet 13 is housed on the curved plate, and the f...

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Abstract

The invention discloses cooling equipment for a seed precipitation tank, which belongs to heat exchange equipment, especially a cooling device for metallurgical aluminum hydroxide seed precipitation tank. The cooling equipment for the seed precipitation tank comprises the seed precipitation tank and an agitator arranged on the central axis of the seed precipitation tank and is characterized in that at least three submersible heat exchangers are distributed around the agitator according to a round array, and the included angle of a main central plane of the submersible heat exchangers and the central axis of the seed precipitation tank is 45-degree. According to the cooling equipment, the submersible heat exchangers with a front tube header and a rear tube header which are arc-shaped are distributed around the agitator according to the round array, and the included angle of the main central plane of the submersible heat exchangers and the central axis of the seed precipitation tank is 45-degree. The submersible heat exchangers are distributed around the agitator according to the round array by adopting a fully-welded plate design, gaps between the plate groups are wide, so that not only heat exchange efficiency and sealing property can be effectively improved, but also the resistance of the heat exchangers on the flowing of solution in the seed precipitation tank can be reduced so as to be beneficial to crystallization separation of the aluminum hydroxide and improve the productivity.

Description

technical field [0001] The invention belongs to heat exchange equipment, in particular to a cooling device for metallurgical aluminum hydroxide seed sub-troughs. Background technique [0002] The device of sodium aluminate solution plus seed crystallization to produce aluminum hydroxide is called "seed split tank", which is the key device for alumina production. The principle is to separate aluminum hydroxide from supersaturated sodium aluminate solution to obtain quality Good aluminum hydroxide and mother liquor with high caustic ratio. The seed sub-tank adopts a cylindrical flat-bottomed mechanical stirring structure, and the sodium aluminate solution is continuously stirred and rolled by mechanical transmission, so that the solution flows horizontally and up and down, so as to prevent aluminum hydroxide crystal particles from settling and accumulating at the bottom of the seed sub-tank. The effect of uniform cooling of the mixture. When the composition of the sodium alu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/14
CPCY02P20/10
Inventor 李本远徐吉田杨朋叶龙
Owner SHANDONG BEICHEN MECHANICAL & ELECTRICAL EQUIP