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Anhydrous sodium sulfate production system and method by adopting two-effect mechanical thermal compression technology

A production system and thermal compression technology, applied in chemical instruments and methods, inorganic chemistry, alkali metal sulfites/sulfites, etc. Drying efficiency, fast and uniform drying, the effect of accelerating production efficiency

Pending Publication Date: 2018-01-12
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 sulfate that can effectively discharge dry nitrate in the drying bed and adopts two-effect and mechanical thermal compression technology, which solves the problem of drying in the existing production system for sodium sulfate. Bed failure can not eliminate the problem of drying nitrate in time, and the drying degree of nitrate is uneven

Method used

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  • Anhydrous sodium sulfate production system and method by adopting two-effect mechanical thermal compression technology
  • Anhydrous sodium sulfate production system and method by adopting two-effect mechanical thermal compression technology
  • Anhydrous sodium sulfate production system and method by adopting two-effect mechanical thermal compression technology

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Embodiment 1

[0033] Such as figure 1 with figure 2 As shown, 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 drying system to discharge the nitrate-containing air; the drying system includes sequentially connected Cyclone, centrifuge, drying bed, the cyclone is connected to the evaporation system, and the drying bed is connected to the purification system; the drying bed includes a drying bed main body 1, and a drying chamber is arranged in the drying bed main body 1, and a chute is arranged in the drying chamber 2. A scraper mechanism 3 is set inside the chute 2, and a driving mechanism 4 for driving the scraper mechanism 3 to reciprocate is installed on the drying bed main body 1, and the driving mechanism 4 is connected to the scraper mechanism 3.

[0034] The inventio...

Embodiment 2

[0036] Such as image 3 As shown, on the basis of Embodiment 1, the scraper mechanism 3 includes a slide bar 31, the slide bar 31 is sleeved in the chute 2, and one end of the slide bar 31 is hinged to the drive mechanism 4; the scraper mechanism 3 also includes A plurality of mud scraping assemblies 32 , one side of the drying bed main body 1 is provided with a nitrate outlet 11 , and the upper end of the mud scraping assemblies 32 is hinged to the slide bar 31 at the side close to the nitration outlet 11 .

[0037] When the driving mechanism 4 pushes the sliding rod 31 to move towards the direction close to the nitric outlet 11, the mud scraping assembly 32 rotates to the vertical under the reaction force of the wet nitric acid, and the sliding rod 31 can stop the mud scraping assembly 32 from continuing to rotate, thereby scraping mud The assembly 32 can push the dried nitrate in the stratum of the drying chamber to move to the nitrate outlet 11, so as to ensure that the dr...

Embodiment 3

[0039] On the basis of Embodiment 1 or Embodiment 2, the mud scraping assembly 32 includes a rotating block 321, the side of the upper end of the rotating block 321 close to the nitrate outlet 11 is hinged with the slide bar 31, and the other end of the rotating block 321 is provided with Groove, the groove of the rotating block 321 is connected with a spring 322, and the other end of the spring 322 is connected with a scraper block 323.

[0040] The spring 322 on the rotating block 321 can push the mud scraping block 323 out, so that when the slide bar 31 moves close to the nitrate outlet 11, the mud scraping block 323 is always in contact with the bottom surface of the drying chamber to ensure that more dry nitrate is scraped The mud block 323 is scraped out, avoiding the accumulation of dry nitrate at the bottom of the drying chamber and being over-dried, and also avoiding the situation that the dry nitrate in the ground blocks the heating of the wet nitrate in the upper lay...

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Abstract

The invention relates to the field of anhydrous sodium sulfate production and in particular relates to an anhydrous sodium sulfate production system and method by adopting a two-effect mechanical thermal compression technology. The technical scheme is as follows: an anhydrous sodium sulfate production system by adopting a two-effect mechanical thermal compression technology comprises a drying system, wherein the drying system comprises a cyclone, a centrifugal machine and a drying bed which are connected in sequence; the drying bed comprises a drying bed main body; a drying chamber is formed inside the drying bed main body; a chute is formed inside the drying chamber; a scraper mechanism is arranged inside the chute in a sleeving manner; and a driving mechanism is arranged on the drying bed main body and is connected with the scraper mechanism. An anhydrous sodium sulfate production method by adopting the two-effect mechanical thermal compression technology comprises the following steps: evaporating, drying and purifying tail gases. The invention provides the anhydrous sodium sulfate production system and method by adopting the two-effect mechanical thermal compression technology capable of effectively discharging dried nitrate in the drying bed, so as to solve the problems that the dried nitrate in the drying bed of the conventional anhydrous sodium sulfate production system cannot be eliminated in time and the nitrate drying degree is non-uniform.

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 double-effect and mechanical heat 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 manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D5/00C01D5/18
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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