CN220194049U - Extraction device for preparing high-purity phosphoric acid - Google Patents
Extraction device for preparing high-purity phosphoric acid Download PDFInfo
- Publication number
- CN220194049U CN220194049U CN202320685819.0U CN202320685819U CN220194049U CN 220194049 U CN220194049 U CN 220194049U CN 202320685819 U CN202320685819 U CN 202320685819U CN 220194049 U CN220194049 U CN 220194049U
- Authority
- CN
- China
- Prior art keywords
- phosphoric acid
- extraction
- inlet
- chamber
- extractant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 238000000605 extraction Methods 0.000 title claims abstract description 85
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 78
- 239000006185 dispersion Substances 0.000 claims abstract description 37
- 238000005245 sintering Methods 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000011152 fibreglass Substances 0.000 claims description 3
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002612 dispersion medium Substances 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 239000002686 phosphate fertilizer Substances 0.000 description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 4
- 238000006115 defluorination reaction Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 239000006012 monoammonium phosphate Substances 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses an extraction device for preparing high-purity phosphoric acid, and belongs to the technical field of purification. Comprises an extractant storage tank, a phosphoric acid storage tank, a clarifying tank and an extraction structure; the extraction structure comprises an extraction chamber, an extractant inlet at the bottom of the extraction chamber, a phosphoric acid inlet at the lower part of the extraction chamber, a mixed liquor outlet at the top of the extraction chamber, an inner cavity vertically arranged in the extraction chamber, a dispersion chamber between the phosphoric acid inlet and the inner cavity and a metal sintering film in the dispersion chamber, wherein the extractant inlet, the mixed liquor outlet and the dispersion chamber are all communicated with the inner cavity, the cross section area of the dispersion chamber is larger than that of the phosphoric acid inlet, the metal sintering film separates the dispersion chamber and has an aperture of 5-40 mu m, the extractant inlet is connected with the extractant storage tank through a pipeline with a first pump, the phosphoric acid inlet is connected with the phosphoric acid storage tank through a pipeline with a second pump, and the mixed liquor outlet is connected with the clarifying tank through a pipeline. The metal sintering film with special aperture is used as a dispersion medium to form micron-sized liquid drops, and the dispersion effect is good.
Description
Technical Field
The utility model belongs to the technical field of purification, and particularly relates to an extraction device for preparing high-purity phosphoric acid, in particular to a purification device for water-soluble phosphate fertilizer raw materials.
Background
In the prior art, the phosphate fertilizer can be obtained by adopting wet phosphoric acid to react with ammonia gas, the high-purity wet phosphoric acid is the basis for preparing the water-soluble phosphate fertilizer, and the water-soluble phosphate fertilizer can be obtained only by the high-purity phosphoric acid. The wet phosphoric acid is obtained by reacting phosphorus ore pulp with concentrated sulfuric acid, and then purifying by concentrating, defluorinating, desulfurizing, extracting, back extracting and the like.
A method for preparing purified phosphoric acid from wet process phosphoric acid is disclosed in application number CN 200710092904.1. The scheme is as follows: the wet phosphoric acid with high concentration is subjected to five-stage extraction by a solvent method four-tank one-tower, desulfurization, defluorination, washing and back extraction, wherein 46-48% of phosphorus pentoxide is extracted and then is used for manufacturing industrial phosphoric acid, and the rest 52-54% of phosphorus pentoxide is conveyed to a ammonium phosphate plant in the form of raffinate to manufacture the low-concentration slurry monoammonium phosphate. The utility model discloses a wet process phosphoric acid clean system as in patent application number CN201520592700.4, including extraction system, desulfurization defluorination device, subsidence washing device and back extraction system that establish ties in proper order, wherein extraction system comprises one-level extraction tank, second grade extraction tank, tertiary extraction tank and the four-level extraction tank of establishing ties in proper order, the four-level extraction tank with desulfurization defluorination device is connected, back extraction system comprises stripping tower and extraction tower, subsidence washing device is connected with the stripping tower, the extraction tower with the four-level extraction tank is connected.
Phosphoric acid is extracted by adopting an extraction tank or an extraction reaction kettle, as disclosed in patent application number CN201520648044.5, the extraction kettle comprises a kettle body, wherein a stirring mechanism is arranged in the kettle body, a sealing cover is arranged at the top of the kettle body, and a feed inlet, an extractant feed inlet and a vent valve are arranged on the sealing cover; one side of the kettle body is provided with a branch pipe for observing the layering completion condition of the extracting solution, the bottom of the kettle body is provided with a discharge hole, and a viewing mirror is arranged below the discharge hole. In the extraction process, the mass transfer coefficient is increased mainly by increasing the contact area of two phases or increasing the turbulence degree of the extraction process (such as the stirring mechanism). In the phosphoric acid extraction process, the two phases are easy to emulsify by increasing the turbulence of the two phases, so that the extraction process is not facilitated. In addition, phosphoric acid has a high viscosity and is not easy to stir.
Disclosure of Invention
In order to solve the problems, the embodiment of the utility model provides an extraction device for preparing high-purity phosphoric acid, and the patent forms micron-sized liquid drops by taking a metal sintering film with a special aperture as a dispersion medium, so that the dispersion effect is good; in addition, the device has no back mixing phenomenon, high mass transfer speed and short residence time required for mass transfer to reach equilibrium. The technical scheme is as follows:
the embodiment of the utility model provides an extraction device for preparing high-purity phosphoric acid, which comprises an extractant storage tank 2, a phosphoric acid storage tank 3, a clarifying tank 4 and an extraction structure 1; the extraction structure 1 comprises an extraction chamber 5 arranged vertically, an extractant inlet 6 at the bottom of the extraction chamber 5, a phosphoric acid inlet 7 at the lower part of the extraction chamber 5, a mixed liquor outlet 8 at the top of the extraction chamber 5, an inner cavity 9 arranged vertically in the extraction chamber 5, a dispersion chamber 10 between the phosphoric acid inlet 7 and the inner cavity 9 and a metal sintering film 11 in the dispersion chamber 10, wherein the extractant inlet 6, the mixed liquor outlet 8 and the dispersion chamber 10 are communicated with the inner cavity 9, the cross section area of the dispersion chamber 10 is larger than that of the phosphoric acid inlet 7, the metal sintering film 11 separates the dispersion chamber 10, the aperture of the metal sintering film is 5-40 mu m, the extractant inlet 6 is connected with the extractant storage tank 2 through a pipeline with a first pump 12 and a first valve 13, the phosphoric acid inlet 7 is connected with the phosphoric acid storage tank 3 through a pipeline with a second pump 14 and a second valve 15, and the mixed liquor outlet 8 is connected with the clarifying tank 4 through a pipeline with a third valve 16.
Specifically, the extraction chamber 5 in the embodiment of the utility model is a glass fiber reinforced plastic cylinder, and the inner cavity 9 is a cylindrical inner cavity coaxially arranged with the extraction chamber 5.
The extractant inlet 6, the mixed solution outlet 8, the dispersion chamber 10, the phosphoric acid inlet 7 and the metal sintering film 11 in the embodiment of the utility model are all perpendicular to the inner cavity 9, the diameter of the dispersion chamber 10 is larger than that of the phosphoric acid inlet 7, and the dispersion chamber is coaxially arranged with the phosphoric acid inlet 7, and the metal sintering film 11 is positioned at one end of the dispersion chamber 10 close to the inner cavity 9.
Preferably, the extractant inlet 6 and the phosphoric acid inlet 7 in the embodiment of the utility model are located on opposite sides of the extraction chamber 5, respectively, and the mixed liquor outlet 8 and the phosphoric acid inlet 7 are located on the same side of the extraction chamber 5.
The metal sintering film 11 in the embodiment of the present utility model is a stainless steel sintering film.
Preferably, the pore diameter of the metal sintering film 11 in the embodiment of the present utility model is 20 μm.
Specifically, the first pump 12 and the second pump 14 in the embodiment of the present utility model are peristaltic pumps.
The technical scheme provided by the embodiment of the utility model has the beneficial effects that: the embodiment of the utility model provides an extraction device for preparing high-purity phosphoric acid, which is used for preparing high-concentration wet-process phosphoric acid. The metal sintering film with special aperture is used as a dispersion medium to form micron-sized liquid drops, so that the dispersion effect is good; in addition, the device has no back mixing phenomenon, high mass transfer speed and short residence time (less than 2.5 s) required for mass transfer to reach equilibrium.
Drawings
FIG. 1 is a schematic diagram showing the structure of an extraction apparatus for producing phosphoric acid of high purity in an embodiment of the present utility model.
In the figure: 1 extraction structure, 2 extractant storage tank, 3 phosphoric acid storage tank, 4 clarifying tank, 5 extraction room, 6 extractant import, 7 phosphoric acid import, 8 mixed liquor export, 9 inner chamber, 10 dispersion room, 11 metal sintering film, 12 first pump, 13 first valve, 14 second pump, 15 second valve, 16 third valve.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
Referring to fig. 1, an embodiment of the present utility model provides an extraction apparatus for preparing high purity phosphoric acid, which includes an extractant tank 2, a phosphoric acid tank 3, a clarifier 4, an extraction structure 1, and the like. The extractant storage tank 2 is used for providing an extractant, and the extractant can be specifically composed of TBP and a diluent, and the diluent can be kerosene or isopropyl ether. The phosphoric acid storage tank 3 is used for storing wet phosphoric acid, preferably after concentration, preferably at a concentration of more than 40wt%. The clarifying tank 4 is used for separating phase of the extracted mixed liquid, the water phase is purified phosphoric acid, and the organic phase is recycled or used as an extractant for the next-stage extraction. To enhance the effect, multiple extraction devices may be combined into a multi-stage extraction system, such as stages 3-5. The extraction structure 1 comprises an extraction chamber 5, an extractant inlet 6 at the bottom of the extraction chamber 5, a phosphoric acid inlet 7 at the lower part of the extraction chamber 5, a mixed liquid outlet 8 at the top of the extraction chamber 5, an inner cavity 9 in the extraction chamber 5, a dispersion chamber 10 between the phosphoric acid inlet 7 and the inner cavity 9, a metal sintering film 11 in the dispersion chamber 10 and the like. The extraction chamber 5 is a vertically arranged cylindrical structure, and is made of glass fiber reinforced plastic. The inner chamber 9 is arranged coaxially to the extraction chamber 5, and may be a cylindrical inner chamber, with a height to diameter ratio of 6-12:1 (may be 8:1 in particular). The extractant inlet 6, the mixed liquor outlet 8 and the dispersion chamber 10 are all communicated with the inner cavity 9, and the cross-sectional area (in the flowing direction of phosphoric acid) of the dispersion chamber 10 is larger than that of the phosphoric acid inlet 7. The extractant inlet 6, the mixed liquor outlet 8, the dispersion chamber 10 and the phosphoric acid inlet 7 can all be of circular hole structures, and the diameter of the dispersion chamber 10 can be almost equal to the inner diameter of the inner cavity 9. The extractant inlet 6 and the phosphoric acid inlet 7 are respectively positioned on opposite sides of the extraction chamber 5, and the mixed liquor outlet 8 and the phosphoric acid inlet 7 are positioned on the same side of the extraction chamber 5. The metal sintering film 11 (perpendicular to the flow direction of phosphoric acid) partitions the dispersion chamber 10 and has a pore diameter of 5 to 40 μm. The extractant inlet 6 is connected to the extractant reservoir 2 via a line with a first pump 12 and a first valve 13 and the phosphoric acid inlet 7 is connected to the phosphoric acid reservoir 3 via a line with a second pump 14 and a second valve 15. The water-oil ratio of the extraction can be adjusted by controlling the first pump 12, the first valve 13, the second pump 14 and the second valve 15 to achieve good extraction effect. The mixed liquor outlet 8 is connected with the clarifier 4 through a pipeline with a third valve 16.
Referring to fig. 1, the extractant inlet 6, the mixed solution outlet 8, the dispersion chamber 10, the phosphoric acid inlet 7 and the metal sintering film 11 in the embodiment of the utility model are all perpendicular to the inner cavity 9, the diameter of the dispersion chamber 10 is larger than that of the phosphoric acid inlet 7, and the dispersion chamber is coaxial with the phosphoric acid inlet 7, and the metal sintering film 11 is located at one end of the dispersion chamber 10 near the inner cavity 9 and can be basically level with the inner wall of the inner cavity 9.
The metal sintering film 11 in the embodiment of the utility model is a stainless steel sintering film, and the aperture of the metal sintering film 11 is 20 μm.
Specifically, the first pump 12 and the second pump 14 in the embodiment of the present utility model are peristaltic pumps.
Taking TBP+isopropyl ether (volume fraction: 25%) as an example, the mass concentration of phosphoric acid is 50wt%, the volume ratio of phosphoric acid to extractant is 2:1, the extraction rate is 78.3%, and the residence time required for mass transfer to reach equilibrium is 2.1s.
The "first", "second" and "third" in this embodiment are only used for distinguishing, and have no other special meaning.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
1. An extraction device for preparing high-purity phosphoric acid, comprising an extractant storage tank (2), a phosphoric acid storage tank (3), a clarifying tank (4) and an extraction structure (1); the extraction structure (1) is characterized by comprising an extraction chamber (5) which is vertically arranged, an extractant inlet (6) at the bottom of the extraction chamber (5), a phosphoric acid inlet (7) at the lower part of the extraction chamber (5), a mixed liquid outlet (8) at the top of the extraction chamber (5), an inner cavity (9) which is vertically arranged in the extraction chamber (5), a dispersion chamber (10) between the phosphoric acid inlet (7) and the inner cavity (9) and a metal sintering film (11) in the dispersion chamber (10), wherein the extractant inlet (6), the mixed liquid outlet (8) and the dispersion chamber (10) are communicated with the inner cavity (9), the cross section area of the dispersion chamber (10) is larger than the cross section area of the phosphoric acid inlet (7), the metal sintering film (11) separates the dispersion chamber (10) and the aperture of the metal sintering film is 5-40 mu m, the extractant inlet (6) is connected with the extractant (2) through a pipeline with a first pump (12) and a first valve (13), the phosphoric acid inlet (7) is connected with a third storage tank (4) through a pipeline with a second pump (14) and a second valve (15), and the phosphoric acid inlet (3) is connected with a third storage tank (16) through a pipeline (16).
2. The extraction device for preparing high-purity phosphoric acid according to claim 1, wherein the extraction chamber (5) is a glass fiber reinforced plastic cylinder and the inner cavity (9) is a cylindrical inner cavity coaxially arranged with the extraction chamber (5).
3. Extraction device for the preparation of high purity phosphoric acid according to claim 2, characterized in that the extractant inlet (6), the mixed liquor outlet (8), the dispersion chamber (10), the phosphoric acid inlet (7) and the metal sintering film (11) are all perpendicular to the inner cavity (9), the diameter of the dispersion chamber (10) is larger than the diameter of the phosphoric acid inlet (7) and is arranged coaxially to the phosphoric acid inlet (7), and the metal sintering film (11) is located at the end of the dispersion chamber (10) close to the inner cavity (9).
4. Extraction device for the preparation of high purity phosphoric acid according to claim 1, characterized in that the extractant inlet (6) and the phosphoric acid inlet (7) are located on opposite sides of the extraction chamber (5), respectively, and the mixed liquor outlet (8) is located on the same side of the extraction chamber (5) as the phosphoric acid inlet (7).
5. Extraction device for the preparation of high purity phosphoric acid according to claim 1, characterized in that the metal sintering film (11) is a stainless steel sintering film.
6. The extraction apparatus for producing high-purity phosphoric acid according to claim 5, wherein the pore diameter of the metal sintering film (11) is 20 μm.
7. The extraction device for producing high purity phosphoric acid according to claim 1, wherein the first pump (12) and the second pump (14) are peristaltic pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320685819.0U CN220194049U (en) | 2023-03-31 | 2023-03-31 | Extraction device for preparing high-purity phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320685819.0U CN220194049U (en) | 2023-03-31 | 2023-03-31 | Extraction device for preparing high-purity phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220194049U true CN220194049U (en) | 2023-12-19 |
Family
ID=89144949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320685819.0U Active CN220194049U (en) | 2023-03-31 | 2023-03-31 | Extraction device for preparing high-purity phosphoric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220194049U (en) |
-
2023
- 2023-03-31 CN CN202320685819.0U patent/CN220194049U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102512848B (en) | Large phase ratio liquid-liquid two-phase continuous extraction apparatus | |
| CN100522836C (en) | Gas stripping type internal circulation device, and method for recovering nitrogen, phosphor from MAP crystal | |
| CN103466829B (en) | High-concentration ammonia nitrogen waste water treatment method and system thereof | |
| CN220194049U (en) | Extraction device for preparing high-purity phosphoric acid | |
| CN1090982C (en) | Continuous stirring vacuum sodium sulfate crystallization technology | |
| CN112657336B (en) | Stable isotope floating extraction precise separation method | |
| CN107055666A (en) | The apparatus and method of contents of many kinds of heavy metal ion in a kind of efficient process waste water | |
| CN213652601U (en) | Floating extraction system for extracting rare and noble metals | |
| CN105176826B (en) | A kind of method and separator of alkalescent flocculation-foam fraction factor microalgae | |
| CN1116096C (en) | Double passageway confection reverse osmosis separating apparatus and the components of double passage way reverse osmosis film | |
| CN1654317A (en) | Purified wet-process technique for producing phosphoric acid and equipment thereof | |
| CN111020240A (en) | Method and device for continuously preparing mixed rare earth chloride feed liquid by using rare earth sulfate solution | |
| CN201552000U (en) | Special filtering device | |
| CN210973887U (en) | Phosphate slurry magnesium removal device capable of utilizing acid wastewater | |
| CN107686193A (en) | A kind of method for handling high-concentration sulfuric acid ammonium waste water | |
| CN215516653U (en) | Wet-process phosphoric acid ore pulp desulphurization unit | |
| CN206635149U (en) | Iron carbon Fenton combination waste water treatment units | |
| CN216614297U (en) | Continuous flocculation device for plant extraction | |
| CN207158921U (en) | A kind of decalcification processing unit of high calcium waste water | |
| CN212998521U (en) | Membrane extraction and separation device | |
| CN219279677U (en) | Nanoscale silicon dioxide wastewater treatment system | |
| CN218306336U (en) | Solid-liquid separation precipitation tank for product enrichment and recovery | |
| CN220999546U (en) | Nitrogen-phosphorus compound fertilizer preparation system | |
| CN215538607U (en) | Device for strengthening removal of impurity ions in ammonium dihydrogen phosphate | |
| CN104627971B (en) | Industrial yellow phosphorus purifies dearsenification device and processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |