CN204607596U - A kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device - Google Patents
A kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device Download PDFInfo
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- CN204607596U CN204607596U CN201520195483.5U CN201520195483U CN204607596U CN 204607596 U CN204607596 U CN 204607596U CN 201520195483 U CN201520195483 U CN 201520195483U CN 204607596 U CN204607596 U CN 204607596U
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- sodium sulfate
- cooling crystallizer
- crystallizer
- lead plaster
- decrease temperature
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Abstract
The utility model discloses a kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device, comprise solution reservoir, recycle pump, cooling crystallizer and centrifugation apparatus, described solution reservoir lower end material outlet connects cooling crystallizer by recycle pump, under described cooling crystallizer, outlet connects centrifugation apparatus, upper outlet connects solution reservoir upper end by return line, described cooling crystallizer is simultaneously containing cooling component and solid-liquid separation component, cooling crystallizer outside connects refrigerant, metabisulfite solution in crystallizer is under the effect of refrigerant, sodium sulfate is separated out with the form of sal glauberi crystal.The utility model solves equipment in conventional warm-down crystallisation process and easily to scab fouling, and energy expenditure is large, the problem that product eduction rate is not high.
Description
Technical field
The utility model relates to chemical device technical field, is specifically related to a kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device.
Background technology
Produce the method mainly heating evaporation crystallization of sodium sulfate at present both at home and abroad, major way has four-effect evaporation end effect secondary steam waste heat nitre method, complete molten dehydration by evaporation method, down-hole Cavern Solution Mining method three kinds.Complete molten dehydration by evaporation method is applicable to natural mirabilite and prepares sodium sulfate, mainly contains pan method and fiery tower method, pan method the equipment that is suitable for simple, but energy consumption is high, products obtained therefrom is of poor quality; Fire tower method advantage is simple to operate, and coal consumption is low, but equipment is in use easily by heavy corrosion.Four-effect evaporation end effect secondary steam waste heat nitre method improves on the basis of complete molten dehydration by evaporation, although energy consumption decreases, the equipment being applicable to the method easily scabs fouling, and equipment normal operation rate is low, poor product quality.What down-hole Cavern Solution Mining method was used is coarse sulfide water, Mg and Ca contained in coarse sulfide water will affect the quality of later product sodium sulfate, and this method is not subject to seasonal restrictions, but early investment is more.In actual production, the problems such as ubiquity equipment energy consumption is high, fouling scabs.
The utility model according to metabisulfite solution below 40 DEG C to temperature than more sensitive characteristic, adopt the mode of decrease temperature crystalline, make sodium sulfate with sal glauberi crystalline form crystallization in the solution, and sal glauberi crystal more than 40 DEG C time can lose crystal water fast and obtain finished product anhydrous sodium sulphate.
The utility model not only can solve the problem that energy consumption in heating evaporation crystallization method is high, fouling scabs, can also solve in conventional warm-down crystallization method and produce floating nitre so that the less FAQs of product particle degree, improve crystal growth rate, reach the object improving crystalline quality.
Summary of the invention
The purpose of this utility model is to provide a kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device, produces floating nitre so that the less FAQs of product particle degree in the problem that energy consumption in heating evaporation crystallization method is high to solve, fouling scabs and rule cooling crystallization method.
The utility model adopts following technical scheme:
A kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device, comprise solution reservoir, recycle pump, cooling crystallizer and centrifugation apparatus, described solution reservoir lower end material outlet connects cooling crystallizer by recycle pump, under described cooling crystallizer, outlet connects centrifugation apparatus, upper outlet connects solution reservoir upper end by return line, and described cooling crystallizer is simultaneously containing cooling component and solid-liquid separation component.
Further, described cooling crystallizer is outer circulation branch road core parts, has both decrease temperature crystalline and solid-liquid separation function, and described cooling component is placed in cooling crystallizer newel or wall locations, can be chuck, newel, coil pipe or its subassembly; Described solid-liquid separation component can be cyclone separator, also can be sifter or gravitational settler etc.
Further, described cooling crystallizer arranges refrigerant import and refrigerant exit.
Further, described centrifugation apparatus is whizzer or other centrifugal separating devices, and whizzer is separated the liquid phase obtained directly can return production system, also as the pre-cooled refrigerant of metabisulfite solution storage tank, can return production system again after reclaiming refrigerant.
Adopt the lead plaster desulfurizing byproduct sulfate crystal method based on the quick crystallization of Local cooling of said apparatus, comprise the steps:
(1) metabisulfite solution is stored in storage tank, cooling crystallizer is delivered to by recycle pump, metabisulfite solution in cooling crystallizer is under the effect of refrigerant, and the degree of depth is cooled to 0 DEG C ~ 10 DEG C rapidly, and the sodium sulfate of 80% ~ 95% is separated out with the form of sal glauberi;
(2) crystal of separating out concentrating and separating in cooling crystallizer, the concentrated phase of solids content 30% ~ 70% enters centrifugation apparatus separation solid phase and obtains sal glauberi crystal, whizzer is separated the liquid phase that obtains or low temperature mother liquor and returns production system and do system make up water, cooling crystallizer is separated the dilute phase obtained and returns sodium sulfate storage tank, and is brought into by refrigerant the solution in storage tank is progressively lowered the temperature.
Above-mentioned method, not directly to solution reservoir cooling, but applies refrigerant on the branch road of outer circulation, causes fast deep cooling so that the crystallize out more fully of cyclic part fluid.
The beneficial effects of the utility model are:
(1) cooling crystallizer of the present utility model has decrease temperature crystalline and solid-liquid separation function concurrently, and structure is simple, and processing efficiency is high.
(2) of the present utility modelly but apply refrigerant on the branch road of outer circulation not directly to solution reservoir cooling, cause the fast deep of cyclic part fluid to lower the temperature, thus the solution crystallize out more fully that is processed can be made.
(3) the utility model energy consumption is low, to scab problem, use this equipment products obtained therefrom quality high without fouling.
(4) the utility model system is simple, stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further details, but is not limited to this.
As shown in Figure 1, lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device of the present invention, comprise solution reservoir 1, recycle pump 2, cooling crystallizer 3 and centrifugation apparatus 4, described solution reservoir 1 lower end material outlet 101 connects cooling crystallizer 3 by recycle pump 2, described cooling crystallizer 3 times outlets 304 connect centrifugation apparatus 4, upper outlet 303 connects solution reservoir 1 upper end by return line, described cooling crystallizer 3 is simultaneously containing gravitational settler 301 and center column jecket 302, and center column jecket 302 is placed in cooling crystallizer 3 newel position; Described cooling crystallizer 3 arranges refrigerant import 305 and refrigerant exit 306.
Adopt the lead plaster desulfurizing byproduct sulfate crystal method based on the quick crystallization of Local cooling of said apparatus, comprise the steps:
At solution reservoir 1 (Φ 0.6m, high 0.8m) middle injection 300kg metabisulfite solution (massfraction is 25%), metabisulfite solution temperature is normal temperature 25 DEG C, open refrigeration system and input refrigerant to cooling crystallizer 3, ON cycle pump 2, metabisulfite solution pumps in cooling crystallizer 3 by outlet 101, the flow of recycle pump 2 is 50L/h, cooling crystallizer 3 comprises gravitational settler 301 and center column jecket 302, the refrigerant of refrigeration matchmaker import 305 and refrigerant exit 306 is regulated to make cooling crystallizer upper outlet 303 dilute phase temperature be 3 DEG C, cooling crystallizer upper outlet 303 dilute phase returns storage tank 1 and is brought into by refrigerant and the solution in storage tank 1 is progressively lowered the temperature, bottom cooling crystallizer 3 concentrated phase be 42% slurries enter whizzer 4 by lower outlet 304, whizzer 4 separation obtains low temperature mother liquor and returns production system as make up water, solid phase obtains the sal glauberi of moisture 2.9%.
Claims (4)
1. a lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device, it is characterized in that: comprise solution reservoir, recycle pump, cooling crystallizer and centrifugation apparatus, described solution reservoir lower end material outlet connects cooling crystallizer by recycle pump, under described cooling crystallizer, outlet connects centrifugation apparatus, upper outlet connects solution reservoir upper end by return line, and described cooling crystallizer is simultaneously containing cooling component and solid-liquid separation component.
2. lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device according to claim 1, is characterized in that: described cooling component is placed in cooling crystallizer newel or wall locations; Described cooling crystallizer arranges refrigerant import and refrigerant exit.
3. lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device according to claim 1 and 2, is characterized in that: described cooling component is chuck, newel, coil pipe or its subassembly; Described solid-liquid separation component is cyclone separator, sifter or gravitational settler.
4. lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device according to claim 1 and 2, is characterized in that: described centrifugation apparatus is whizzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520195483.5U CN204607596U (en) | 2015-04-02 | 2015-04-02 | A kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device |
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| CN201520195483.5U CN204607596U (en) | 2015-04-02 | 2015-04-02 | A kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device |
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| CN204607596U true CN204607596U (en) | 2015-09-02 |
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| CN201520195483.5U Expired - Fee Related CN204607596U (en) | 2015-04-02 | 2015-04-02 | A kind of lead plaster desulfurizing byproduct sodium sulfate decrease temperature crystalline device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724730A (en) * | 2015-04-02 | 2015-06-24 | 湘潭大学 | Method and device for crystallizing lead plaster desulphurization by-product sodium sulfate based on localized cooling and rapid crystal precipitation |
-
2015
- 2015-04-02 CN CN201520195483.5U patent/CN204607596U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724730A (en) * | 2015-04-02 | 2015-06-24 | 湘潭大学 | Method and device for crystallizing lead plaster desulphurization by-product sodium sulfate based on localized cooling and rapid crystal precipitation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20170402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |