CN206985737U - A kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction - Google Patents
A kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction Download PDFInfo
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- CN206985737U CN206985737U CN201720855533.7U CN201720855533U CN206985737U CN 206985737 U CN206985737 U CN 206985737U CN 201720855533 U CN201720855533 U CN 201720855533U CN 206985737 U CN206985737 U CN 206985737U
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Abstract
A kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction, including disintegrating machine, screw(-type) feeder, stock tank again, reactive tank, vacuum band-type filter machine, pneumatic conveyer dryer, filtrate receiver, inspissator, crystallization tank, centrifuge, fluid bed and mother liquor tank, disintegrating machine connects screw(-type) feeder, stock tank and screw(-type) feeder coupled reaction groove charging aperture again, reactive tank discharging opening connects vacuum band-type filter machine charging aperture, vacuum band-type filter machine solid-phase outlet connects pneumatic conveyer dryer, vacuum band-type filter machine liquid-phase outlet connects filtrate receiver, filtrate receiver connects inspissator, inspissator connects crystallization tank, crystallization tank connection centrifugation machine inlet, centrifuge solid-phase outlet connects fluid bed, centrifuge liquid-phase outlet connects mother liquor tank, mother liquor tank is connected with stock tank again.
Description
Technical field
The utility model is related to the reaction of a kind of salkali waste using caprolactam by-product and ardealite produce precipitated calcium carbonate and
Sulfuric acid sodium system.
Background technology
During Wet-process Phosphoric Acid Production, 1 ton of phosphoric acid is often produced, with regard to 5 tons of ardealites of by-product, how this part ardealite is located
Reason, into it is long-standing the problem of, really can recycle at present the 20% of insufficient total output, other is mainly to take stacking
Disposal method, not only cost is high for such a method, and pollutes big；In caprolactam production process, caused salkali waste, due to product
Matter is bad, not good, is substantially only used for glass manufacture, cheap；The utility model is original using both materials
Material, produce precipitated calcium carbonate and the preferable sodium sulphate of quality, reasonably make use of company's existing resource, realize change give up into
It is precious.
The content of the invention
The technical problem that the utility model solves is to provide a kind of salkali waste using caprolactam by-product and reacted with ardealite
Precipitated calcium carbonate and sulfuric acid sodium system are produced, ardealite and salkali waste can be reclaimed.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：It is a kind of to utilize the useless of caprolactam by-product
Alkali produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction, it is characterised in that：Including disintegrating machine, screw(-type) feeder, again
Stock tank, reactive tank, vacuum band-type filter machine, pneumatic conveyer dryer, filtrate receiver, inspissator, crystallization tank, centrifuge, fluid bed and mother
Liquid bath, disintegrating machine connection screw(-type) feeder, then stock tank and screw(-type) feeder coupled reaction groove charging aperture, the connection of reactive tank discharging opening
Vacuum band-type filter machine charging aperture, vacuum band-type filter machine solid-phase outlet connection pneumatic conveyer dryer, vacuum band-type filter machine liquid phase
Outlet connection filtrate receiver, filtrate receiver connection inspissator, inspissator connection crystallization tank, crystallization tank connection centrifugation machine inlet, centrifugation
Machine solid-phase outlet connects fluid bed, centrifuge liquid-phase outlet connection mother liquor tank, and mother liquor tank is connected with stock tank again.
The beneficial effects of the utility model are：The system is that the salkali waste of caprolactam by-product is reclaimed with ardealite
Utilize, not only handling process is simple, and reaction condition is gentle, is easily controlled, and reduces pollution of the discarded object to environment, reduces
Enterprise's production cost.
Brief description of the drawings
The utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, a kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid with ardealite reaction
Sodium system, including disintegrating machine 1, screw(-type) feeder 2, again stock tank 12, reactive tank 3, vacuum band-type filter machine 4, pneumatic conveyer dryer 5,
Filtrate receiver 6, inspissator 7, crystallization tank 8, centrifuge 9, fluid bed 10 and mother liquor tank 11, disintegrating machine 1 connect screw(-type) feeder 2, then
Stock tank 12 and the charging aperture of 2 coupled reaction groove of screw(-type) feeder 3, the discharging opening of the reactive tank 3 connection charging aperture of vacuum band-type filter machine 4,
The solid-phase outlet of vacuum band-type filter machine 4 connects pneumatic conveyer dryer, the liquid-phase outlet of vacuum band-type filter machine 4 connection filtrate receiver 6, filtrate
Groove 6 connects inspissator 7, and inspissator 7 connects crystallization tank 8, and crystallization tank 8 connects the charging aperture of centrifuge 9, and the solid-phase outlet of centrifuge 9 connects
Fluid bed 10, the liquid-phase outlet of centrifuge 9 connection mother liquor tank 11 are connect, mother liquor tank 11 is connected with stock tank 12 again.
Implementation process of the present utility model is：
（1）First analyze Wet-process Phosphoric Acid Production in by-product ardealite in CaSO4·2H2O content, it will contain
1000gCaSO4·2H2O ardealite adds water to be adjusted to the slurry of solid content 50%, further according to CaSO4·2H2O calculates salkali waste（It is main
Want composition sodium carbonate, purity 80%）Theoretical amount, by CaSO4·2H2The mass ratio 1 of the pure material of O and sodium carbonate:1.05,
Salkali waste, 75 DEG C of keeping temperature, stirring reaction 2.5h are added into reactive tank 3.
（2）For abundant reacted material after the filtering of vacuum band-type filter machine 4, filter cake delivers to pneumatic conveying drying after washing
Device 5 is dried, and drying temperature controls 100 DEG C -105 DEG C, obtains finished light calcium carbonate.
（3）The filtrate that above-mentioned steps obtain is delivered to inspissator 7, is flashed under the conditions of -85kPa, and the filtrate after concentration is entered
Enter in crystallization tank 8 and cool down, the temperature control of crystallization tank 8 is 25 DEG C -30 DEG C, crystallization time 4h.
（4）By the material emptying in crystallization tank 8 to centrifuge 9, finished product sulfuric acid sodium is obtained after the drying of fluid bed 10, is fluidized
10 drying temperatures of bed control 100 DEG C -105 DEG C.
Claims (1)
1. a kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction, its feature
It is：Including disintegrating machine, again screw(-type) feeder, stock tank, reactive tank, vacuum band-type filter machine, pneumatic conveyer dryer, filtrate receiver, dense
Contracting device, crystallization tank, centrifuge, fluid bed and mother liquor tank, disintegrating machine connection screw(-type) feeder, then stock tank connect with screw(-type) feeder
Reactive tank charging aperture, reactive tank discharging opening connection vacuum band-type filter machine charging aperture, the connection of vacuum band-type filter machine solid-phase outlet
Pneumatic conveyer dryer, vacuum band-type filter machine liquid-phase outlet connection filtrate receiver, filtrate receiver connection inspissator, inspissator connection crystallization
Groove, crystallization tank connection centrifugation machine inlet, centrifuge solid-phase outlet connection fluid bed, centrifuge liquid-phase outlet connection mother liquor tank,
Mother liquor tank is connected with stock tank again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720855533.7U CN206985737U (en) | 2017-07-14 | 2017-07-14 | A kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720855533.7U CN206985737U (en) | 2017-07-14 | 2017-07-14 | A kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206985737U true CN206985737U (en) | 2018-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720855533.7U Active CN206985737U (en) | 2017-07-14 | 2017-07-14 | A kind of salkali waste using caprolactam by-product produces precipitated calcium carbonate and sulfuric acid sodium system with ardealite reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206985737U (en) |
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2017
- 2017-07-14 CN CN201720855533.7U patent/CN206985737U/en active Active
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