CN110787479A - Purification and crystallization device for zinc sulfate production and preparation method thereof - Google Patents
Purification and crystallization device for zinc sulfate production and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a purification and crystallization device for zinc sulfate production, which comprises a crystallization tank, wherein a purification evaporator is arranged on one side of the crystallization tank, a gas-liquid separator is arranged between the purification evaporator and the crystallization tank, a continuous feeding tank is arranged below the gas-liquid separator, a circulating heater is arranged on one side of the purification evaporator away from the gas-liquid separator, a second-stage liquid inlet is arranged on one side of the gas-liquid separator close to the purification evaporator, a first-stage liquid outlet is arranged at the bottom of the gas-liquid separator, an air outlet is arranged at the bottom of the gas-liquid separator, a third-stage liquid inlet is arranged at the lower end of the crystallization tank close to one side of the gas-liquid separator, a second-stage liquid outlet is arranged on the gas-liquid separator above the third-stage liquid inlet, and a crystallization outlet is, the sufficient steam quantity of the purification evaporator is ensured, the production efficiency of zinc sulfate liquid purification crystallization is improved, and meanwhile, the cost is reduced.
Description
Technical Field
The invention relates to the field of purification and crystallization, and particularly relates to a purification and crystallization device for zinc sulfate production and a preparation method thereof.
Background
The zinc sulfate is colorless or white crystal, granule or powder, also known as goslarite, and has no odor and astringent taste, the zinc oxide is added into dilute sulfuric acid solution and mixed into slurry, after the reaction is completed, the obtained product is passed through the processes of filtering, adding zinc powder to make copper, cadmium and nickel be substituted, filtering, heating filtrate, adding potassium permanganate to make the impurities of iron and manganese be oxidized, filtering, clarifying, concentrating, cooling, crystallizing, centrifugal separation and drying so as to obtain the invented product.
In view of the above, chinese patent No. CN209161511U proposes a zinc sulfate purification apparatus, which can remove chloride, potassium, sodium, iron, manganese, cadmium, and other ions, thereby greatly improving the purity of zinc sulfate products and obtaining pure and qualified zinc sulfate crystals. However, the above patent adopts the heater to directly heat the zinc sulfate when crystallizing, the crystallization mode not only can not be used continuously, but also the solution after heating is cooled and crystallized to cause a large amount of heat loss, so that the zinc sulfate purification crystallization energy consumption and the cost are large, the energy conservation and the environmental protection are not facilitated, and the practicability is poor.
Disclosure of Invention
The invention mainly aims to provide a zinc sulfate production purification crystallization device and a preparation method thereof, which can effectively solve the problems that in the background art, a heater is adopted for directly heating zinc sulfate during crystallization, the crystallization mode cannot be continuously used, and a large amount of heat loss is caused by cooling and crystallizing a heated solution, so that the energy consumption and the cost of zinc sulfate purification crystallization are high, and the energy conservation and the environmental protection are not facilitated.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a zinc sulfate production is with purification crystallization device, includes the crystallizer, one side of crystallizer is equipped with the purification evaporimeter, be equipped with vapour and liquid separator between purification evaporimeter and the crystallizer, vapour and liquid separator's below is equipped with continuous feed jar, one side that vapour and liquid separator was kept away from to the purification evaporimeter is equipped with circulation heater, one side that vapour and liquid separator is close to the purification evaporimeter is equipped with the second grade inlet, vapour and liquid separator's bottom is equipped with the one-level leakage fluid dram, vapour and liquid separator's bottom is equipped with the gas outlet, the lower extreme that the crystallizer is close to vapour and liquid separator one side is equipped with tertiary inlet, be equipped with the second grade leakage fluid dram on the vapour and liquid separator of tertiary inlet top, vapour and liquid separator's bottom is equipped.
Preferably, the purification evaporator comprises an evaporator shell, a liquid collecting tray, a liquid distribution tray, heat exchange tubes, a liquid outlet, a primary liquid inlet, a primary steam inlet, a secondary steam inlet and a water outlet, the upper end of the interior of the evaporator shell is fixedly provided with the liquid collecting tray, the lower end of the interior of the evaporator shell is fixedly provided with the liquid distribution tray, a plurality of heat exchange tubes are fixedly arranged between the liquid distribution tray and the liquid collecting tray in a communicating manner, the top of the evaporator shell is provided with the liquid outlet communicated with the liquid collecting tray, the liquid outlet is connected with a primary pump through a liquid conveying pipeline, the primary pump is connected with the secondary liquid inlet through a liquid conveying pipeline, the bottom of the evaporator shell is provided with the primary liquid inlet communicated with the liquid distribution tray, the secondary steam inlet is connected with a heat pump through a steam pipeline, and the heat pump is connected with the gas, the continuous feeding device is characterized in that the primary liquid inlet is connected with the continuous feeding tank through a liquid conveying pipeline, a primary steam inlet is formed in one side, close to the gas-liquid separator, of the upper end of the evaporator shell, a secondary steam inlet is formed in the evaporator shell on one side, opposite to the primary steam inlet, of the evaporator shell, a water outlet is formed in the lower end of the evaporator shell below the secondary steam inlet, and the water outlet is connected with the circulating heater.
Preferably, the continuous feed jar detects the head including a jar body, feed inlet, pivot, blade, servo motor and HP, be equipped with the feed inlet on the jar body, the top of the jar body is passed through the infusion pipeline and is connected with the secondary pump, the secondary pump passes through the infusion pipeline and is connected with the second grade leakage fluid dram on the crystallizer, the pivot is installed to jar internal rotation, install a plurality of blades in the pivot, the one end of pivot is run through jar body and servo motor's output fixed mounting, install HP on the jar body and detect the head.
Preferably, a heating element is arranged in the circulating heater, a steam outlet is arranged at the top of the circulating heater, and the steam outlet is connected with the primary steam inlet through a circulating steam pipe.
Preferably, the evaporator shell, the liquid collecting tray and the liquid distributing tray are all arranged in a circular structure.
The preparation method of the purification and crystallization device for zinc sulfate production comprises the following steps
Firstly, heating by a circulating heater to generate steam, and enabling the steam to enter the inner part of an evaporator shell through a circulating steam pipe through a primary steam inlet;
secondly, under the action of a primary pump, zinc sulfate liquid in a continuous feeding tank enters a liquid distribution disc from a primary liquid inlet, uniformly enters a heat exchange tube through the liquid distribution disc, moves from bottom to top in the heat exchange tube through the primary pump, passes through a liquid collection disc, enters a gas-liquid separator from a liquid outlet through a liquid conveying pipeline, and is heated by steam generated by a circulating heater in the process;
performing gas-liquid separation on the zinc sulfate liquid heated in the third step in a gas-liquid separator, feeding the separated gas into a heat pump through a steam pipeline from a gas outlet, heating the gas through the heat pump, feeding the heated gas into an evaporator shell through a second-stage steam inlet for recycling, discharging the separated liquid through a first-stage liquid outlet, feeding the liquid into a crystallizing tank through a liquid conveying pipe and a third-stage liquid inlet, and crystallizing and purifying the liquid in the crystallizing tank;
step four, circulation: in the second step, water with waste heat generated after heat exchange is discharged from a water outlet and enters a circulating heater for circulating heating, and steam generated by heating is continuously supplied to a purification evaporator; the zinc sulfate solution generated by the purification in the third step enters a continuous feeding tank to be mixed, circulated, supplied and purified under the action of a secondary pump;
and discharging the purified crystallized zinc sulfate from a crystallization outlet at the bottom of the crystallization tank for storage.
Compared with the prior art, the invention has the following beneficial effects:
in the invention, through the arranged purification evaporator, the gas-liquid separator and the continuous feeding tank, the zinc sulfate liquid can be continuously evaporated and crystallized, the continuity of zinc sulfate crystallization and the stability of product quality are ensured, the labor intensity is reduced, simultaneously, the high-temperature gas separated by the gas-liquid separator is heated by the heat pump and is used for the purification evaporator, the water with waste heat generated by the purification evaporator enters the circulating heater to be heated to generate steam for the purification evaporator, the high-temperature gas reduces the energy consumption of the heat pump and the waste heat water reduces the energy consumption of the circulating heater while ensuring the sufficient steam quantity of the purification evaporator, the cost is reduced while improving the production efficiency of zinc sulfate liquid purification and crystallization, the heating steam and the zinc sulfate liquid are isolated by the heat exchange tube, the purity of the zinc sulfate crystallization product is improved, the liquid is gradually close to a steam inlet, the practicability is stronger.
Drawings
FIG. 1 is a schematic structural view in elevation and section of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the structure of a purification evaporator of the present invention;
FIG. 4 is a schematic structural view of a liquid collection tray according to the present invention;
fig. 5 is a schematic view showing the structure of the continuous feed tank of the present invention.
In the figure: 1. a crystallization tank; 2. a purification evaporator; 21. an evaporator housing; 22. a liquid collection pan; 23. a liquid distribution tray; 24. a heat exchange pipe; 25. a liquid outlet; 26. a primary liquid inlet; 27. a primary steam inlet; 28. a secondary steam inlet; 29. a water outlet; 3. a gas-liquid separator; 31. a secondary liquid inlet; 32. a primary liquid discharge port; 33. an air outlet; 4. a circulation heater; 41. circulating the steam pipe; 5. a heat pump; 6. a transfusion pipeline; 7. a continuous feed tank; 71. a tank body; 72. a feed inlet; 73. a rotating shaft; 74. a blade; 75. a servo motor; 76. an HP detection head; 8. a primary pump; 81. a secondary pump; 9. a third-stage liquid inlet; 10. a secondary liquid outlet; 11. and (4) a crystallization outlet.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1-4, a zinc sulfate production is with purification crystallization device, including crystallizer 1, one side of crystallizer 1 is equipped with purification evaporimeter 2, be equipped with gas-liquid separator 3 between purification evaporimeter 2 and crystallizer 1, the below of gas-liquid separator 3 is equipped with continuous feed jar 7, one side that purification evaporimeter 2 kept away from gas-liquid separator 3 is equipped with circulating heater 4, one side that gas-liquid separator 3 is close to purification evaporimeter 2 is equipped with second grade inlet 31, the bottom of gas-liquid separator 3 is equipped with one-level drain 32, the bottom of gas-liquid separator 3 is equipped with gas outlet 33, the lower extreme that crystallizer 1 is close to one side of gas-liquid separator 3 is equipped with tertiary inlet 9, be equipped with second grade drain 10 on the gas-liquid separator 3 above tertiary inlet 9, the bottom of gas-liquid separator 3 is equipped with crystallization outlet 11, the first-stage liquid outlet 32 is connected with the third-stage liquid inlet 9 through a liquid conveying pipeline 6.
Purification evaporimeter 2 includes evaporimeter shell 21, liquid catch tray 22, liquid distribution dish 23, heat exchange tube 24, liquid outlet 25, one-level inlet 26, one-level steam inlet 27, second grade steam inlet 28 and outlet 29, the inside upper end fixed mounting of evaporimeter shell 21 has liquid collection dish 22, the inside lower extreme fixed mounting of evaporimeter shell 21 has liquid distribution dish 23, intercommunication fixed mounting has a plurality of heat exchange tubes 24 between liquid distribution dish 23 and the liquid collection dish 22, the top of evaporimeter shell 21 is equipped with the liquid outlet 25 that sets up with liquid collection dish 22 intercommunication, liquid outlet 25 is connected with primary pump 8 through infusion pipeline 6, primary pump 8 is connected with second grade inlet 31 through infusion pipeline 6, the bottom of evaporimeter shell 21 is equipped with the one-level inlet 26 that sets up with liquid distribution dish 23 intercommunication, second grade steam inlet 28 is connected with heat pump 5 through steam pipeline, the heat pump 5 is connected with the air outlet 33 through a steam pipeline, the primary liquid inlet 26 is connected with the continuous feeding tank 7 through a liquid conveying pipeline 6, one side, close to the gas-liquid separator 3, of the upper end of the evaporator shell 21 is provided with a primary steam inlet 27, a secondary steam inlet 28 is arranged on the evaporator shell 21 on one side, opposite to the primary steam inlet 27, of the evaporator shell 21, a water outlet 29 is arranged at the lower end of the evaporator shell 21 below the secondary steam inlet 28, and the water outlet 29 is connected with the circulating heater 4.
Example two:
as shown in fig. 5, on the basis of the first embodiment, the continuous feeding tank 7 includes a tank 71, a feeding port 72, a rotating shaft 73, blades 74, a servo motor 75, and an HP detection head 76, the tank 71 is provided with the feeding port 72, the top of the tank 71 is connected with a secondary pump 81 through a liquid conveying pipeline 6, the secondary pump 81 is connected with a secondary liquid discharge port 10 on the crystallization tank 1 through the liquid conveying pipeline 6, the tank 71 is rotatably provided with the rotating shaft 73, the rotating shaft 73 is provided with the blades 74, one end of the rotating shaft 73 penetrates through the tank 71 and is fixedly installed at an output end of the servo motor 75, the tank 71 is provided with the HP detection head 76, and zinc sulfate solution generated after purification continuously enters the tank 71 to be mixed with residual solution in the tank 71 for continuous evaporation and purification.
Further, the inside of the circulation heater 4 is provided with a heating element, the top of the circulation heater 4 is provided with a steam outlet, the steam outlet is connected with the first-stage steam inlet 27 through a circulation steam pipe 41, the waste heat water generated by the purification evaporator 2 can be utilized for circularly heating to generate steam for the use of the purification evaporator 2, and the waste heat water can reduce heating energy consumption.
On the basis of the above scheme, the evaporator shell 21, the liquid collecting tray 22 and the liquid distributing tray 23 are all arranged in a circular structure.
The embodiment also provides a preparation method of the purification and crystallization device for zinc sulfate production, which comprises the following steps
Firstly, heating by a circulating heater 4 to generate steam, and enabling the steam to enter the evaporator shell 21 through a circulating steam pipe 41 through a primary steam inlet 27;
secondly, under the action of a primary pump 8, zinc sulfate liquid in a continuous feeding tank 7 enters a liquid distribution disc 23 from a primary liquid inlet 26, uniformly enters a heat exchange pipe 24 through the liquid distribution disc 23, moves from bottom to top in the heat exchange pipe 24 through the primary pump 8, passes through a liquid collection disc 22, enters a gas-liquid separator 3 from a liquid outlet 25 through a liquid conveying pipeline 6, and is heated by steam generated by a circulating heater 4 in the process;
performing gas-liquid separation on the zinc sulfate liquid heated in the third step and the second step in a gas-liquid separator 3, enabling the separated gas to enter a heat pump 5 through a steam pipeline from a gas outlet 33, heating the gas through the heat pump 5, enabling the gas to enter an evaporator shell 21 through a secondary steam inlet 28 for recycling, discharging the separated liquid through a primary liquid outlet 32, enabling the liquid to enter a crystallization tank 1 through a liquid conveying pipeline 6 and a tertiary liquid inlet 9, and crystallizing and purifying the liquid in the crystallization tank 1;
step four, circulation: in the second step, the water with waste heat generated after heat exchange is discharged from a water outlet 29 and enters a circulating heater 4 for circulating heating, and steam generated by heating is continuously supplied to the purification evaporator 2; the zinc sulfate solution generated by the third step of purification enters the continuous feeding tank 7 under the action of the secondary pump 81 for mixed circulation supply and purification;
and discharging the purified crystallized zinc sulfate from a crystallization outlet 11 at the bottom of the crystallization tank 1 for storage.
It should be noted that, the invention is a zinc sulfate production uses the purification crystallization device and its preparation method, when using, the circulation heater 4 heats the steam to produce and enter the inside of the evaporator shell 21 through the first grade steam inlet 27 by the circulation steam pipe 41, under the function of the first grade pump 8, the zinc sulfate liquid in the continuous feed tank 7 enters the liquid distribution disk 23 from the first grade liquid inlet 26, enter the heat exchange tube 24 evenly through the liquid distribution disk 23, move from bottom to top through the first grade pump 8 zinc sulfate liquid in the heat exchange tube 24, enter the gas-liquid separator 3 through the liquid collecting disk 22 from the liquid outlet 25 through the liquid conveying pipeline 6, this process utilizes the steam produced by the circulation heater 4 to heat the zinc sulfate liquid, the heated zinc sulfate liquid carries on the gas-liquid separation in the gas-liquid separator 3, the separated gas enters the heat pump 5 through the steam pipeline from the gas outlet 33, heat enters the evaporator shell 21 through the second grade steam inlet 28 by, the separated liquid is discharged from a first-stage liquid outlet 32, enters a crystallizing tank 1 from a third-stage liquid inlet 9 through a liquid conveying pipeline 6, is crystallized and purified in the crystallizing tank 1, water with waste heat generated after heat exchange in an evaporator shell 21 is discharged from a water outlet 29 and enters a circulating heater 4 for circulating and heating, steam generated by heating continuously supplies the purifying evaporator 2, zinc sulfate solution generated by purifying the crystallizing tank 1 enters a continuous feeding tank 7 under the action of a second-stage pump 81 for mixing, circulating and supplying for purification, and purified zinc sulfate crystal is discharged from a crystal outlet 11 at the bottom of the crystallizing tank 1 for storage The water that has the waste heat that purification evaporimeter 2 produced gets into circulating heater 4 heating and produces steam and be used for purification evaporimeter 2, when guaranteeing the sufficient steam volume of purification evaporimeter 2, high-temperature gas reduces the heat pump 5 energy consumption, the energy consumption of circulating heater 4 is reduced to the waste heat water, reduce the cost when improving zinc sulfate liquid purification crystallization production efficiency, keep apart through heat exchange tube 24 between heating steam and the zinc sulfate liquid here, improve the purity of zinc sulfate crystallization product, and liquid is close to steam inlet in heat exchange tube 24 gradually, improve the heat transfer effect, the practicality is stronger.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a zinc sulfate production is with purification crystallization device, includes crystallizer (1), its characterized in that: one side of the crystallization tank (1) is provided with a purification evaporator (2), a gas-liquid separator (3) is arranged between the purification evaporator (2) and the crystallization tank (1), a continuous feed tank (7) is arranged below the gas-liquid separator (3), one side of the purification evaporator (2) far away from the gas-liquid separator (3) is provided with a circulating heater (4), one side of the gas-liquid separator (3) close to the purification evaporator (2) is provided with a secondary liquid inlet (31), the bottom of the gas-liquid separator (3) is provided with a primary liquid outlet (32), the bottom of the gas-liquid separator (3) is provided with a gas outlet (33), the lower end of the crystallization tank (1) close to one side of the gas-liquid separator (3) is provided with a tertiary liquid inlet (9), and the gas-liquid outlet (10) is arranged on the gas-liquid inlet (3, the bottom of the gas-liquid separator (3) is provided with a crystallization outlet (11), and the first-stage liquid outlet (32) is connected with the third-stage liquid inlet (9) through a liquid conveying pipeline (6).
2. The purification and crystallization device for zinc sulfate production according to claim 1, characterized in that: purification evaporimeter (2) includes evaporimeter shell (21), liquid catch tray (22), liquid distribution dish (23), heat exchange tube (24), liquid outlet (25), one-level inlet (26), one-level steam inlet (27), second grade steam inlet (28) and outlet (29), the inside upper end fixed mounting of evaporimeter shell (21) has liquid catch tray (22), the inside lower extreme fixed mounting of evaporimeter shell (21) has liquid distribution dish (23), intercommunication fixed mounting has a plurality of heat exchange tubes (24) between liquid distribution dish (23) and liquid catch tray (22), the top of evaporimeter shell (21) is equipped with liquid outlet (25) that set up with liquid catch tray (22) intercommunication, liquid outlet (25) are connected with primary pump (8) through infusion pipeline (6), primary pump (8) are connected with second grade inlet (31) through infusion pipeline (6), the bottom of evaporator shell (21) is equipped with one-level inlet (26) that sets up with liquid distribution dish (23) intercommunication, second grade steam inlet (28) are connected with heat pump (5) through steam conduit, heat pump (5) are connected with gas outlet (33) through steam conduit, one-level inlet (26) are connected with continuous feed tank (7) through infusion pipeline (6), one side that evaporator shell (21) upper end is close to vapour and liquid separator (3) is equipped with one-level steam inlet (27), be equipped with second grade steam inlet (28) on evaporator shell (21) of one-level steam inlet (27) relative one side, evaporator shell (21) lower extreme of second grade steam inlet (28) below is equipped with outlet (29), outlet (29) are connected with circulation heater (4).
3. The purification and crystallization device for zinc sulfate production according to claim 2, characterized in that: continuous feed jar (7) detect head (76) including jar body (71), feed inlet (72), pivot (73), blade (74), servo motor (75) and HP, be equipped with feed inlet (72) on jar body (71), the top of jar body (71) is passed through infusion pipeline (6) and is connected with secondary pump (81), secondary pump (81) are connected with second grade leakage fluid dram (10) on crystallization jar (1) through infusion pipeline (6), pivot (73) are installed to jar body (71) internal rotation, install a plurality of blades (74) on pivot (73), the output fixed mounting of jar body (71) and servo motor (75) is run through to the one end of pivot (73), install HP on jar body (71) and detect head (76).
4. The purification and crystallization device for zinc sulfate production according to claim 2, characterized in that: the heating element is arranged in the circulating heater (4), the steam outlet is formed in the top of the circulating heater (4), and the steam outlet is connected with the primary steam inlet (27) through a circulating steam pipe (41).
5. The purification and crystallization device for zinc sulfate production according to claim 2, characterized in that: the evaporator shell (21), the liquid collecting tray (22) and the liquid distribution tray (23) are all arranged in a circular structure.
6. The preparation method of the purification and crystallization device for zinc sulfate production according to claim 1, characterized in that: comprises the following steps
Firstly, heating by a circulating heater (4) to generate steam, and enabling the steam to enter the inner part of an evaporator shell (21) through a circulating steam pipe (41) through a primary steam inlet (27);
secondly, under the action of a primary pump (8), zinc sulfate liquid in a continuous feeding tank (7) enters a liquid distribution disc (23) from a primary liquid inlet (26), uniformly enters a heat exchange pipe (24) through the liquid distribution disc (23), moves from bottom to top in the heat exchange pipe (24) through the primary pump (8), passes through a liquid collection disc (22), enters a gas-liquid separator (3) from a liquid outlet (25) through a liquid conveying pipeline (6), and is heated by steam generated by a circulating heater (4);
thirdly, performing gas-liquid separation on the zinc sulfate liquid heated in the second step in a gas-liquid separator (3), enabling the separated gas to enter a heat pump (5) through a steam pipeline from a gas outlet (33), heating the gas through the heat pump (5), enabling the gas to enter an evaporator shell (21) through a second-stage steam inlet (28) for recycling, discharging the separated liquid through a first-stage liquid outlet (32), enabling the liquid to enter a crystallization tank (1) through a liquid conveying pipeline (6) from a third-stage liquid inlet (9), and crystallizing and purifying the liquid in the crystallization tank (1);
step four, circulation: in the second step, water with residual heat generated after heat exchange is discharged from a water outlet (29) and enters a circulating heater (4) for circulating heating, and steam generated by heating is continuously supplied to a purification evaporator (2); the zinc sulfate solution generated by the third step of purification enters a continuous feeding tank (7) under the action of a secondary pump (81) for mixed circulation supply and purification;
and discharging the purified crystallized zinc sulfate from a crystallization outlet (11) at the bottom of the crystallization tank (1) for storage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911188790.XA CN110787479A (en) | 2019-11-28 | 2019-11-28 | Purification and crystallization device for zinc sulfate production and preparation method thereof |
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| CN201911188790.XA CN110787479A (en) | 2019-11-28 | 2019-11-28 | Purification and crystallization device for zinc sulfate production and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112717457A (en) * | 2020-12-08 | 2021-04-30 | 萍乡宝海锌营养科技有限公司 | Production zinc sulfate is with concentrated evaporation crystallizer |
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Application publication date: 20200214 |