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Concentration production device for mirabilite-method barium sulfate byproduct sodium sulfide

A production device, sodium sulfide technology, applied in the direction of alkali metal sulfide/polysulfide, separation method, chemical instrument and method, etc., can solve the problems of labor occupation, pipe plugging, high energy consumption of multi-effect evaporation, etc. Scale, improve the effect of concentration efficiency

Pending Publication Date: 2020-09-22
JIANGSU RUISHENGHUA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used concentration method is multi-effect evaporation, and because sodium sulfide contains barium sulfate, calcium sulfate, calcium carbonate and other trace insoluble substances, it is easy to foul in the evaporator and cause tube blockage, which requires frequent disassembly and cleaning, which takes a lot of labor.
Coupled with multiple factors such as high energy consumption of multi-effect evaporation, the production cost of sodium sulfide remains high, which seriously reduces the production efficiency of the sodium sulfide industry.

Method used

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  • Concentration production device for mirabilite-method barium sulfate byproduct sodium sulfide
  • Concentration production device for mirabilite-method barium sulfate byproduct sodium sulfide

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Embodiment Construction

[0019] The specific embodiment of the present invention is:

[0020] see Figure 1-2 As shown, the concentrated production device of barium sulfate by-product sodium sulfide by Glauber’s salt method, sodium sulfide solution inlet 1, feed pump 2, primary preheater 4, primary settling tank 5, secondary settling tank 7, transfer pump 10 , microfilter 11, secondary preheater 12, and separator 14 are sequentially connected by pipelines; primary preheater 4 heats through heat source inlet 3; primary preheater 4 heats sodium sulfide solution; secondary preheater The device 12 is connected with the second steam inlet 13; the first evaporation heating chamber 17 and the second evaporation heating chamber 18 form a closed loop with the separator 14 in turn; the first evaporation heating chamber 17 and the second evaporation heating chamber 18 are The sodium sulfide solution is heated and evaporated, and the forced circulation pump 19 pushes the sodium sulfide solution to return to the ...

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Abstract

The invention discloses a concentration production device for a mirabilite-method barium sulfate byproduct sodium sulfide. The device includes a sodium sulfide solution inlet, a first-stage preheater,a first-stage settling tank, a second-stage settling tank, a microfilter, a second-stage preheater and a separator that are sequentially connected through pipelines; the at least one evaporation heating chamber and the separator form a closed loop; the lower part of the separator is connected to a concentrated liquid outlet through a pipeline; the first-stage settling tank comprises a box body, amotor, a scraping plate and a rotating shaft; a scraping plate is arranged in the box body; the scraping plate is attached to the bottom of the box body; the scraping plate is arranged on the rotating shaft; the rotating shaft is rotatably connected to the box body; and the motor drives the rotating shaft to rotate. According to the invention, the sodium sulfide solution is filtered and settled before separation, scaling in the evaporator is avoided, and the concentration efficiency of the sodium sulfide solution is improved; the motor drives the rotating shaft to rotate to drive the scrapingplate to rotate, pipe blockage is prevented, disassembly and cleaning are avoided, and a large amount of manpower and material resources are saved.

Description

technical field [0001] The invention relates to the concentration field, in particular to the concentration production field of sodium sulfide. Background technique [0002] Sodium sulfide is one of the main by-products in the production of barium sulfate by Glauber's salt method, and its concentration is as low as 5% (wt). In actual production, the low-concentration sodium sulfide by-product needs to be concentrated as a downstream industrial product. At present, the commonly used concentration method is multi-effect evaporation, and because sodium sulfide contains barium sulfate, calcium sulfate, calcium carbonate and other trace insoluble substances, it is easy to foul in the evaporator and cause tube blockage, which requires frequent disassembly and cleaning, which takes a lot of labor. Coupled with multiple factors such as high energy consumption of multi-effect evaporation, the production cost of sodium sulfide remains high, which seriously reduces the production effic...

Claims

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Application Information

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IPC IPC(8): B01D1/30B01D36/04B01D21/06C01B17/22
CPCB01D1/30B01D21/06B01D36/04C01B17/22
Inventor 张小江万起展陈竹林周齐夏协兵
Owner JIANGSU RUISHENGHUA ENERGY TECH CO LTD
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