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Production system and production method for sodium sulfate by adopting single effect and mechanical thermal compression technology

A production system and production method technology, applied in the direction of alkali metal sulfite/sulfate dehydration, etc., can solve the problem of low evaporation efficiency of the evaporation tank, achieve the effects of simplifying equipment, improving evaporation efficiency, and simplifying the structure of the preparation device

Pending Publication Date: 2018-02-02
四川省洪雅青衣江元明粉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiencies of the prior art, and provides a system and method for producing sodium bicarbonate powder using single-effect and mechanical thermal compression technology, which can fully stir the nitric acid slurry in the evaporation tank to improve evaporation efficiency, and solve the problem of the prior art. The problem of low evaporation efficiency of the evaporation tank in the starch production system

Method used

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  • Production system and production method for sodium sulfate by adopting single effect and mechanical thermal compression technology
  • Production system and production method for sodium sulfate by adopting single effect and mechanical thermal compression technology
  • Production system and production method for sodium sulfate by adopting single effect and mechanical thermal compression technology

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Embodiment 1

[0033] like figure 1 and figure 2 , the present invention includes an evaporation system, the evaporation system is connected with a drying system for concentrating the nitrate slurry discharged from the evaporation system, and the drying system is connected with a purification system for purifying the air containing nitrate discharged from the drying system; the evaporation system includes an evaporation tank, an evaporation tank The steam outlet of the steam tank is connected to a scrubber and a compressor in turn through a pipeline, the outlet of the compressor is connected to the air inlet of the evaporation tank through a pipeline, and the nitrate outlet of the evaporation tank is connected to the drying system; the evaporation tank includes a tank body 1, a tank body 1 is fixed with a partition 2, and there are gaps between the partition 2 and the upper and lower ends of the tank body 1. The partition 2 separates the inside of the tank 1 into a stirring chamber and a co...

Embodiment 2

[0037] like image 3 As shown, on the basis of Embodiment 1, the stirring mechanism 3 includes a motor 31, the motor 31 is installed on the tank body 1, the output shaft of the motor 31 is connected with a rotating rod 32, the rotating rod 32 is located in the stirring chamber, and the rotating rod 32 is connected with the tank body 1 by a bearing, and several forward stirring paddles 33 and some reverse stirring mechanisms 34 are respectively installed on the rotating rods 32 .

[0038] When the motor 31 is started, the forward stirring paddle 33 rotates forward together with the rotating rod 32, while the reverse stirring paddle 345 on the reverse stirring mechanism 34 rotates reversely. Therefore, the stirring directions of the nitric acid slurry in different height layers are different in the stirring chamber, avoiding the formation of vortex or internal and external stratification of the nitric slurry in the mixing chamber, improving the heating uniformity of the nitric s...

Embodiment 3

[0040] On the basis of Embodiment 1 and Embodiment 2, the reverse stirring mechanism 34 includes a driving bevel gear 341, and the driving bevel gear 341 is fixed on the rotating rod 32; the driving bevel gear 341 is meshed with a connecting bevel gear 342, and the connecting bevel gear The rotating shaft of 342 is connected to the inner wall of the tank body 1 through a bearing, and the connecting bevel gear 342 is also meshed with a driven bevel gear 343. A collar 344 is fixed inside the driven bevel gear 343, and the collar 344 is connected to the rotating rod 32 through a bearing. On the collar 344, a reverse stirring paddle 345 is fixed.

[0041] The driving bevel gear 341 forwardly rotates together with the rotating rod 32 , and the connecting bevel gear 342 transmits power to the driven bevel gear 343 . Connecting the bevel gear 342 plays a reversing role, and the driven bevel gear 343, the collar 344, and the reverse stirring paddle 345 all rotate in the opposite direc...

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Abstract

The invention relates to the field of sodium sulfate production, in particular to a production system and a production method for sodium sulfate by adopting a single effect and mechanical thermal compression technology. The technical scheme provided by the invention is that the production system for the sodium sulfate by adopting the single effect and mechanical thermal compression technology comprises an evaporating system, a drying system and a purifying system, wherein the evaporating system comprises an evaporating tank; the evaporating tank comprises a tank body; a separating board is fixed in the tank body; clearances are reserved between the separating board and upper and lower ends of the tank body; the inner part of the tank body is separated into a stirring cavity and a convection cavity by the separating board; a stirring mechanism is arranged in the stirring cavity; a material pushing mechanism is arranged in the convection cavity. The production method for the sodium sulfate by adopting the single effect and mechanical thermal compression technology comprises the steps of evaporating, drying and purifying tail gases. The invention provides the production system and theproduction method by adopting the single effect and mechanical thermal compression technology, by which nitrate slurry is sufficiently stirred in the evaporating tank so as to improve the evaporationefficiency; the problem of relatively-low evaporation efficiency of the evaporating tank in an existing production system for the sodium sulfate is solved.

Description

technical field [0001] The invention relates to the field of sodium sulfate production, in particular to a production system and method for sodium sulfate using single-effect and mechanical thermal compression technology. Background technique [0002] Sodium sulfate generally refers to sodium sulfate. Sodium sulfate is a salt formed by the combination of sulfate radical and sodium ion. Sodium sulfate is soluble in water and its aqueous solution is weakly alkaline, soluble in glycerin but not in ethanol. Inorganic compound, sodium sulfate decahydrate, also known as Glauber's salt, and high-purity, fine-grained anhydrous substance is called Yuanmingfen. It is easy to absorb water to form sodium sulfate decahydrate when exposed to air, and sodium sulfate decahydrate is commonly known as Glauber's salt. Yuanmingfen, white, odorless, bitter crystal or powder, hygroscopic. Appearance is colorless, transparent, large crystals or granular small crystals. Mainly used in the manufac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D5/18
CPCC01D5/18
Inventor 张春太余建兵张云照石兆亮
Owner 四川省洪雅青衣江元明粉有限公司
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