CN216694390U - Drying system for efficiently and continuously producing anhydrous iron phosphate - Google Patents
Drying system for efficiently and continuously producing anhydrous iron phosphate Download PDFInfo
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- CN216694390U CN216694390U CN202123238067.3U CN202123238067U CN216694390U CN 216694390 U CN216694390 U CN 216694390U CN 202123238067 U CN202123238067 U CN 202123238067U CN 216694390 U CN216694390 U CN 216694390U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model belongs to the technical field of drying, and discloses a drying system for efficiently and continuously producing anhydrous iron phosphate, which comprises a first feeding assembly, a hot air dryer, a first material collector, a second feeding assembly, an air flow crusher, a second material collector and a cooling feeding screw, wherein the first feeding assembly, the hot air dryer, the first material collector, the second feeding assembly, the air flow crusher, the second material collector and the cooling feeding screw are sequentially connected; the first feeding assembly comprises an arch breaking hopper and a first feeding screw which are communicated together; the second feeding assembly comprises a hopper and a second feeding screw which are communicated together. According to the utility model, when the material to be dried passes through the hot air dryer, free water is removed, the particle size of the material is reduced, the subsequent heat conduction efficiency can be improved, and the energy consumption is saved; the hot air dryer and the airflow crusher are combined, so that continuous drying can be realized, the time required by production is shortened, and the drying efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of drying, and particularly relates to a drying system for efficiently and continuously producing anhydrous iron phosphate.
Background
Ferric phosphate, also known as ferric phosphate, ferric orthophosphate, of the molecular formula FePO4It is white and off-white monoclinic crystal powder. Is salt formed by the action of ferric salt solution and sodium phosphate, wherein the iron is in positive trivalent state. The method is mainly used for manufacturing lithium iron phosphate battery materials, catalysts, ceramics and the like.
At present, the main method for removing the crystal water of the ferric phosphate dihydrate is high-temperature drying, and a rotary kiln drying method is mainly adopted, wherein the heating temperature of the rotary kiln is 500-700 ℃, and the crystal water is removed after the rotary kiln is retained on a temperature platform for 1-3 h. The rotary kiln has high heating temperature and large energy consumption. In the heating process of the rotary kiln, part of iron phosphate particles can be agglomerated and hardened, and need to be crushed again in the rear end process, and the hardened particles are difficult to crush and long in crushing time, so that the production efficiency is reduced. Therefore, an efficient and continuous drying system is needed to meet the production requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and provide a drying system for efficiently and continuously producing anhydrous iron phosphate.
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
a drying system for efficiently and continuously producing anhydrous iron phosphate comprises a first feeding assembly, a hot air dryer, a first material collector, a second feeding assembly, an air flow crusher, a second material collector and a cooling feeding screw which are sequentially connected;
the discharge hole A of the first feeding assembly is communicated with the feed hole A of the hot air dryer; a discharge hole B of the hot air dryer is communicated with a feed hole B of the first material collector; a discharge hole C of the first material collector is communicated with a feed hole C of the second feeding assembly; a discharge hole D of the second feeding assembly is communicated with a feed hole D of the jet mill; the top of the jet mill is provided with a grading wheel, and the jet mill is communicated with a feed inlet E of the second material collector through the grading wheel; and a discharge hole E of the second material collector is communicated with a feed inlet F of the cooling feed screw.
Preferably, the first feeding assembly comprises an arch breaking hopper and a first feeding screw which are communicated together; the second feeding assembly comprises a hopper and a second feeding screw which are communicated together.
Preferably, a rotary discharge valve is arranged on a discharge hole C of the first material collector; and a discharge hole E of the second material collector is provided with a rotary discharge valve.
Preferably, the first material collector is a cyclone separator or a bag-type dust collector; the second material collector is a cyclone separator or a bag-type dust collector.
Preferably, the drying system further comprises a natural gas hot blast stove, and a hot air inlet of the hot air dryer is communicated with an air outlet of the natural gas hot blast stove.
Preferably, the drying system further comprises a first heat exchanger, a first induced draft fan, a second heat exchanger, a second induced draft fan and a plate heat exchanger.
Preferably, a first exhaust port at the top of the first material collector is sequentially communicated with a first heat exchanger and a first induced draft fan; and a second exhaust port at the top of the second material collector is sequentially communicated with a second draught fan, a plate heat exchanger and a second heat exchanger.
Preferably, an air inlet of the natural gas hot blast stove is communicated with a hot fluid outlet of the plate heat exchanger, and a cold fluid inlet of the plate heat exchanger is communicated with an air source; the second induced draft fan is communicated with a hot fluid inlet of the plate heat exchanger, and a cold fluid outlet of the plate heat exchanger is communicated with the second heat exchanger.
Preferably, the first heat exchanger, the second heat exchanger and the cooling feeding screw are all provided with a cold water inlet and a hot water outlet.
Preferably, the jet mill is communicated with a high-temperature high-pressure steam source.
Wherein the hot air temperature range of the hot air dryer is 200-300 ℃; the high-temperature high-pressure steam source temperature of the jet mill is more than or equal to 300 ℃, and the pressure range is 0.5-2.0 Mpa.
The present invention also includes other components that enable the normal use of a drying system for the efficient continuous production of anhydrous iron phosphate, all by conventional means in the art. In addition, the undefined devices or components in the present invention are all the conventional technical means in the field, and those skilled in the art can select the shape, model, installation mode, control mode, etc. according to the actual use requirement, and will not be described in detail herein.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, when the material to be dried passes through the hot air dryer, free water is removed, the particle size of the material is reduced, the subsequent heat conduction efficiency can be improved, and the energy consumption is saved;
2. according to the jet mill, the milling and drying are integrated, so that the particle size of the material is further reduced, and the heat conduction efficiency is improved; tail gas of the jet mill passes through the plate heat exchanger to heat air entering the hot blast stove, so that heat is fully utilized, and energy consumption is further saved;
3. the utility model combines the hot air dryer and the airflow crusher, can continuously dry, shortens the time required by production and improves the drying efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Description of the drawings: 1. a hot air dryer; 2. a first material collector; 3. a jet mill; 4. a second material collector; 5. cooling and feeding screws; 6. a grading wheel; 7. an arch breaking hopper; 8. a first feed screw; 9. a hopper; 10. a second feed screw; 11. rotating the discharge valve; 12. a natural gas hot blast stove; 13. a first heat exchanger; 14. a first induced draft fan; 15. a second heat exchanger; 16. a second induced draft fan; 17. a plate heat exchanger; 18. an air source; 19. cold water; 20. hot water; 21. a high-temperature high-pressure steam source; 22. a natural gas source; 23. ferric phosphate dihydrate filter cake; 24. anhydrous iron phosphate powder.
Detailed Description
The utility model will be further described with reference to the drawings and specific embodiments, which are illustrative of the utility model and are not to be construed as limiting the utility model.
As shown in fig. 1, a drying system for efficiently and continuously producing anhydrous iron phosphate comprises a first feeding assembly, a hot air dryer 1, a first material collector 2, a second feeding assembly, an air flow grinder 3, a second material collector 4 and a cooling feeding screw 5 which are connected in sequence;
the discharge hole A of the first feeding assembly is communicated with the feed hole A of the hot air dryer 1; a discharge hole B of the hot air dryer 1 is communicated with a feed hole B of the first material collector 2; a discharge hole C of the first material collector 2 is communicated with a feed hole C of the second feeding assembly; a discharge hole D of the second feeding assembly is communicated with a feed hole D of the jet mill 3; the top of the jet mill 3 is provided with a grading wheel 6, and the jet mill 3 is communicated with a feed inlet E of the second material collector 4 through the grading wheel 6; the discharge hole E of the second material collector 4 is communicated with the feed hole F of the cooling feed screw 5.
The first feeding assembly comprises an arch breaking hopper 7 and a first feeding screw 8 which are communicated together; the second feeding assembly comprises a hopper 9 and a second feeding screw 10 which are communicated together.
A discharge port C of the first material collector 2 is provided with a rotary discharge valve 11; the discharge hole E of the second material collector 4 is also provided with a rotary discharge valve.
The first material collector 2 is a bag-type dust collector; the second material collector 4 is a bag-type dust collector.
The drying system further comprises a natural gas hot-blast stove 12, and a hot-blast inlet of the hot-blast dryer 1 is communicated with an air outlet of the natural gas hot-blast stove 12.
The drying system also comprises a first heat exchanger 13, a first induced draft fan 14, a second heat exchanger 15, a second induced draft fan 16 and a plate heat exchanger 17.
A first exhaust port at the top of the first material collector 2 is sequentially communicated with a first heat exchanger 13 and a first induced draft fan 14; and a second exhaust port at the top of the second material collector 4 is sequentially communicated with a second induced draft fan 16, a plate heat exchanger 17 and a second heat exchanger 15.
An air inlet of the natural gas hot blast stove 12 is communicated with a hot fluid outlet of the plate heat exchanger 17, and a cold fluid inlet of the plate heat exchanger 17 is communicated with an air source 18; the second induced draft fan 16 is communicated with a hot fluid inlet of the plate heat exchanger 17, and a cold fluid outlet of the plate heat exchanger 17 is communicated with the second heat exchanger 15.
The first heat exchanger 13, the second heat exchanger 15 and the cooling feeding screw 5 are all provided with a cold water inlet and a hot water outlet. The cold water inlets are communicated with cold water 19, and the hot water outlets discharge hot water 20.
The jet mill 3 is communicated with a high-temperature high-pressure steam source 21. The natural gas hot blast stove 12 is communicated with a natural gas source 22.
The action principle is as follows:
when the utility model is used, the ferric phosphate dihydrate filter cake 23 containing a large amount of free water is conveyed into a first feeding screw through an arch breaking hopper and enters a hot air dryer through the first feeding screw; and (3) carrying out primary drying on the filter cake containing a large amount of free water by a hot air dryer, then feeding the filter cake into a first material collector, and carrying out gas-material separation to obtain the pre-dried ferric phosphate dihydrate. And (3) feeding the pre-dried ferric phosphate dihydrate into a jet mill through a rotary discharge valve, a hopper and a second feeding screw, crushing and secondary drying through high-temperature high-pressure steam, and then feeding the crushed ferric phosphate dihydrate into a second material collector along with the steam to separate gas and material to obtain anhydrous ferric phosphate powder after high-temperature crushing. And (3) allowing the anhydrous ferric phosphate powder after high-temperature crushing to enter a cooling feeding screw through a rotary discharge valve to carry out spiral cooling, and obtaining cooled anhydrous ferric phosphate powder 24 after spiral cooling.
And tail gas separated by the first material collector is subjected to heat exchange, cooling and discharge through the first heat exchanger under the action of the first induced draft fan for subsequent treatment. The tail gas separated by the second material collector is high in temperature, passes through the plate heat exchanger under the action of the second draught fan, is discharged after heating the air entering the natural gas hot blast stove, then enters the second heat exchanger, and is discharged after being cooled by the second heat exchanger for subsequent treatment.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a drying system of anhydrous ferric phosphate of high-efficient continuous production which characterized in that: the drying system comprises a first feeding assembly, a hot air dryer, a first material collector, a second feeding assembly, an airflow crusher, a second material collector and a cooling feeding screw which are connected in sequence;
the discharge hole A of the first feeding assembly is communicated with the feed hole A of the hot air dryer; a discharge hole B of the hot air dryer is communicated with a feed hole B of the first material collector; a discharge hole C of the first material collector is communicated with a feed hole C of the second feeding assembly; a discharge hole D of the second feeding assembly is communicated with a feed hole D of the jet mill; the top of the jet mill is provided with a grading wheel, and the jet mill is communicated with a feed inlet E of the second material collector through the grading wheel; and a discharge hole E of the second material collector is communicated with a feed inlet F of the cooling feed screw.
2. The drying system for efficient and continuous production of anhydrous iron phosphate according to claim 1, characterized in that: the first feeding assembly comprises an arch breaking hopper and a first feeding screw which are communicated together; the second feeding assembly comprises a hopper and a second feeding screw which are communicated together.
3. The drying system for efficiently and continuously producing anhydrous iron phosphate according to claim 2, characterized in that: a discharge port C of the first material collector is provided with a rotary discharge valve; and a discharge hole E of the second material collector is provided with a rotary discharge valve.
4. The drying system for efficiently and continuously producing anhydrous iron phosphate according to claim 3, characterized in that: the first material collector is a cyclone separator or a bag-type dust collector; the second material collector is a cyclone separator or a bag-type dust collector.
5. The drying system for high-efficiency continuous production of anhydrous iron phosphate according to claim 4, characterized in that: the drying system also comprises a natural gas hot blast stove, and a hot air inlet of the hot air dryer is communicated with an air outlet of the natural gas hot blast stove.
6. The drying system for efficiently and continuously producing anhydrous iron phosphate according to claim 5, wherein: the drying system further comprises a first heat exchanger, a first induced draft fan, a second heat exchanger, a second induced draft fan and a plate type heat exchanger.
7. The drying system for efficiently and continuously producing anhydrous iron phosphate according to claim 6, wherein: a first exhaust port at the top of the first material collector is sequentially communicated with a first heat exchanger and a first induced draft fan; and a second exhaust port at the top of the second material collector is sequentially communicated with a second draught fan, a plate heat exchanger and a second heat exchanger.
8. The drying system for high-efficiency continuous production of anhydrous iron phosphate according to claim 7, characterized in that: an air inlet of the natural gas hot blast stove is communicated with a hot fluid outlet of the plate heat exchanger, and a cold fluid inlet of the plate heat exchanger is communicated with an air source; the second induced draft fan is communicated with a hot fluid inlet of the plate heat exchanger, and a cold fluid outlet of the plate heat exchanger is communicated with the second heat exchanger.
9. The drying system for efficiently and continuously producing anhydrous iron phosphate according to claim 8, wherein: the first heat exchanger, the second heat exchanger and the cooling feeding screw are all provided with a cold water inlet and a hot water outlet.
10. The drying system for efficient and continuous production of anhydrous iron phosphate according to claim 9, characterized in that: the jet mill is communicated with a high-temperature high-pressure steam source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123238067.3U CN216694390U (en) | 2021-12-22 | 2021-12-22 | Drying system for efficiently and continuously producing anhydrous iron phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123238067.3U CN216694390U (en) | 2021-12-22 | 2021-12-22 | Drying system for efficiently and continuously producing anhydrous iron phosphate |
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| Publication Number | Publication Date |
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| CN216694390U true CN216694390U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123238067.3U Active CN216694390U (en) | 2021-12-22 | 2021-12-22 | Drying system for efficiently and continuously producing anhydrous iron phosphate |
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2021
- 2021-12-22 CN CN202123238067.3U patent/CN216694390U/en active Active
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