CN111905401A - Kettle type crystallization equipment and application thereof in potassium permanganate production - Google Patents
Kettle type crystallization equipment and application thereof in potassium permanganate production Download PDFInfo
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- CN111905401A CN111905401A CN202010840230.4A CN202010840230A CN111905401A CN 111905401 A CN111905401 A CN 111905401A CN 202010840230 A CN202010840230 A CN 202010840230A CN 111905401 A CN111905401 A CN 111905401A
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- kettle
- potassium permanganate
- type crystallization
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- cooling water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/17—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/12—Maintenance of mixers using mechanical means
- B01F35/123—Maintenance of mixers using mechanical means using scrapers for cleaning mixers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/12—Manganates manganites or permanganates
- C01G45/1207—Permanganates ([MnO]4-) or manganates ([MnO4]2-)
- C01G45/1214—Permanganates ([MnO]4-) or manganates ([MnO4]2-) containing alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses kettle type crystallization equipment and application thereof in potassium permanganate production, and belongs to the technical field of chemical industry.
Description
Technical Field
The invention relates to the field of chemical equipment, in particular to kettle type crystallization equipment and application thereof in potassium permanganate production.
Background
Potassium permanganate is generated by the electrolysis of potassium manganate, and potassium permanganate crystals discharged from the electrolytic bath are still primary products, have overlarge alkalinity and contain a small amount of mechanical impurities. After the primary product is subjected to one or more times of dissolution, heating, clarification and impurity separation, the clarified liquid is recrystallized, and the obtained crystal is the high-purity potassium permanganate. The process is commonly used by various manufacturers.
The pot crystallization refers to discharging high-temperature clear liquid into a crystallization pot which is a rectangular or round open flat-bottom standing container. Because the clear liquid is in a saturated or supersaturated state, the clear liquid is naturally cooled in a crystallization basin, crystals grow gradually, when the temperature is reduced to the environmental temperature, the crystals do not precipitate and grow any more, at the moment, the liquid (mother liquid) in the basin is discharged, the crystals are manually shoveled out, and the potassium permanganate finished product is obtained through further centrifugation and drying.
The basin type crystallization is naturally cooled, the critical point of the final temperature is the environment temperature, and the soluble crystal is not separated out at the temperature; because the difference between the environmental temperature in winter and the environmental temperature in summer is large, the precipitation amount is obviously different, and the interest rate of the product is in the day;
the basin type crystallization is static type crystallization, and the crystallization forms formed by the basin wall and the basin bottom and the middle layer and the upper layer of the basin are different, which is finally reflected that the crystals of the product are not uniform;
the crystallizing basin is a flat-bottom container, the mixture cannot be discharged through potential difference or power, and after mother liquor is discharged through a bottom valve, solid materials can only be transferred manually.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provides kettle type crystallization equipment and application thereof in potassium permanganate production.
The technical solution of the invention is as follows:
a kettle-type crystallization apparatus comprising: the cauldron body is provided with the pivot on the cauldron body and is used for the drive pivot pivoted drive arrangement, be provided with the stirring leaf in the pivot, be provided with the scraper on the stirring leaf, the scraper includes the fly leaf, fly leaf and stirring leaf swing joint are provided with a scraper blade on the fly leaf, the scraper blade can with cauldron internal wall looks butt.
Preferably, the fly leaf is the L template, and the L template includes long slab and short slab, the one end and the stirring leaf of long slab are articulated, it is provided with a connecting rod still to articulate on the stirring leaf, keep away from the one end of stirring leaf on the connecting rod through an elastic device with the short slab is connected.
Preferably, the connecting rod is disposed in parallel with the long plate.
Preferably, when the scraper blade with cauldron internal wall butt, the fly leaf is the obtuse angle setting with the stirring leaf.
Preferably, the kettle body is an open kettle body.
Preferably, the reactor also comprises a cooling water circulating device, wherein the cooling water circulating device comprises a jacket arranged on the outer wall of the kettle body, an inner coil is arranged in the jacket, and the inner coil is communicated with a cooling water supply device.
The invention also discloses application of the kettle type crystallization equipment in the production of potassium permanganate, which comprises the following steps: adding the high-temperature potassium permanganate mother liquor into kettle type crystallization equipment, starting a driving device, and after a kettle body is reduced to a specified temperature, obtaining a mixture containing potassium permanganate crystals in the kettle body.
Preferably, the drive means is activated simultaneously with the activation of the cooling-circulating water means.
Preferably, the mixture is subjected to solid-liquid separation to obtain a mother solution and a solid, the solid is dried to prepare a potassium permanganate crystal, and the mother solution enters the kettle body for recycling.
Preferably, the prescribed temperature is 30 to 40 ℃.
The invention has at least one of the following beneficial effects:
(1) according to the kettle type crystallization equipment, the scraper is arranged on the stirring blade, so that crystals crystallized on the inner wall of the kettle body can be scraped off while stirring, the solution can be uniformly crystallized, and the influence of the crystals on the wall part to influence the cooling rate and further influence the crystallization efficiency can be effectively avoided.
(2) The kettle type crystallization equipment is applied to the production of potassium permanganate, the yield of the potassium permanganate is balanced, and the prepared potassium permanganate crystals have consistent shapes.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of the kettle body of the present invention;
FIG. 3 is a schematic top view of a preferred embodiment of the agitator shaft of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3;
in the figure, 100-kettle body, 200-jacket, 201-cooling liquid outlet, 202-cooling liquid inlet, 300-driving device, 400-rotating shaft, 500-stirring blade, 501-movable plate, 502-scraper, 503-elastic device, 504-connecting rod, 600-drain outlet, 700-discharge outlet, 800-centrifuge and 900-dryer.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 4, a preferred embodiment of the present invention:
a kettle-type crystallization apparatus comprising: the cauldron body 100 is provided with pivot 400 on the cauldron body 100 and is used for the drive pivot 400 pivoted drive arrangement 300, specifically, drive arrangement 300 is gear motor, be provided with stirring leaf 500 on the pivot 400, be provided with the scraper device on the stirring leaf 500, the scraper device includes fly leaf 501, fly leaf 501 and stirring leaf 500 swing joint are provided with a scraper blade 502 on the fly leaf 501, scraper blade 502 can with cauldron body 100 inner wall looks butt.
This preferred embodiment sets up scraper blade 501 on stirring leaf 500, can be when the stirring, scrapes off the crystalline solid that has crystallized at the internal wall of cauldron body 100, can make the even crystallization of solution, also can effectively avoid the crystalline solid to influence the cooling rate at wall portion to influence crystallization efficiency.
As a preferred embodiment of the present invention, it may also have the following additional technical features:
the fly leaf 501 is the L template, and the L template includes long board and short slab, the one end and the stirring leaf 500 of long board are articulated, promptly when the scraper blade 502 received the resistance, fly leaf 501 can be rotatory around articulated department, avoids scraping the dynamics too big, influences the crystallization form of crystalline solid, still articulated being provided with a connecting rod 504 on the stirring leaf 500, the one end of keeping away from stirring leaf 500 on the connecting rod 504 through an resilient means 503 with the short slab is connected, specifically, resilient means 503 is the spring, avoids scraper blade 501 to the rigid contact of cauldron body 100 wall portion, can be along with the crystalline solid thickness at cauldron body 100 inner wall crystallization in addition, can have the cushioning effect to the adjustment of fly leaf angle.
The connecting rod 504 is parallel to the long plate, so that the spring can extend and contract in the stress direction conveniently.
When the scraper 502 abuts against the inner wall of the kettle body 100, the movable plate 501 and the stirring blade 500 are arranged at an obtuse angle to scrape crystals from the inner wall of the kettle body 100 at an inclined angle, so that the scraping is more labor-saving, and the influence of the scraping force on the crystal form of potassium permanganate can be reduced.
The kettle body 100 is an open kettle body, specifically an open kettle body, the arrangement is convenient for the kettle body to dissipate heat and subsequently wash and clean the crystallization kettle, and the driving device 300 is fixed on the top of the kettle body 100 through a support.
Still including cooling water circle device, cooling water circle device is including setting up in the clamp cover 200 of cauldron external wall, is provided with interior coil pipe in the clamp cover 200, interior coil pipe intercommunication has cooling water supply device, and specifically, cooling water supply device is the cooling water set, is provided with cooling water inlet 202 and cooling water export 201 on the clamp cover 200, cooling water inlet 202 and cooling water export 201 and interior coil pipe intercommunication, still be provided with drain outlet 600 on the clamp cover 200, be convenient for discharge the residual water, the life of extension equipment.
In still other applications, the kettle type crystallization equipment is further provided with a centrifuge 800 along the discharging direction, the arrangement position of the centrifuge is lower than the arrangement position of the kettle body 100, and discharging can be directly carried out according to the height difference, wherein the specific height difference is 2-3 m.
In still other applications, the kettle crystallization apparatus is further provided with a dryer 900 and a lifter along the discharging direction, and the lifter is used for conveying the material separated by the centrifuge 800 into the dryer 900.
The invention also discloses application of the kettle type crystallization equipment in the production of potassium permanganate, which comprises the following steps: adding high-temperature potassium permanganate mother liquor into a crystallization kettle, starting a driving device 300 and a cooling water circulating device, driving the rotating shaft 400 to rotate by the driving device 300, enabling the rotating speed to be 330r/min, discharging a mixture containing potassium permanganate crystals in the kettle body 100 into a centrifugal machine 800 for solid-liquid separation after the temperature of the kettle body 100 is reduced to 30-40 ℃, enabling the separated mother liquor to enter the kettle body 100 for cyclic utilization, enabling the separated solids to be the potassium permanganate crystals, and enabling the separated solids to be taken into a drying machine 900 by a lifting machine for drying to obtain the potassium permanganate crystals.
The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.
In the description of the embodiments of the present invention, it should be understood that "-" and "-" indicate the same range of two numerical values, and the range includes the endpoints. For example: "A-B" means a range of greater than or equal to A and less than or equal to B. "A to B" means a range of A to B inclusive.
In the description of the embodiments of the present invention, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (10)
1. A kettle type crystallization device, which is characterized by comprising: the cauldron body (100), be provided with pivot (400) on the cauldron body (100) and be used for the drive pivot (400) pivoted drive arrangement (300), be provided with stirring leaf (500) on pivot (400), be provided with on stirring leaf (500) and scrape the material device, it includes fly leaf (501) to scrape the material device, fly leaf (501) and stirring leaf (500) swing joint are provided with a scraper blade (502) on fly leaf (501), scraper blade (502) can with cauldron body (100) inner wall looks butt.
2. The kettle type crystallization equipment as claimed in claim 1, wherein the movable plate (501) is an L-shaped plate, the L-shaped plate comprises a long plate and a short plate, one end of the long plate is hinged with the stirring blade (500), the stirring blade (500) is further hinged with a connecting rod (504), and one end of the connecting rod (504) far away from the stirring blade (500) is connected with the short plate through an elastic device (503).
3. A kettle crystallization apparatus as claimed in claim 2 wherein said tie rods (504) are arranged parallel to said elongated plate.
4. The kettle-type crystallization equipment as claimed in claim 1, wherein the movable plate (501) and the stirring blade (500) are arranged at an obtuse angle when the scraper (502) is abutted against the inner wall of the kettle body (100).
5. The kettle crystallization apparatus of claim 1, wherein the kettle (100) is an open kettle.
6. The kettle type crystallization equipment as claimed in claim 1, further comprising a cooling water circulation device, wherein the cooling water circulation device comprises a jacket (200) arranged on the outer wall of the kettle body, an inner coil is arranged in the jacket (200), and the inner coil is communicated with a cooling water supply device.
7. The application of kettle type crystallization equipment in the production of potassium permanganate is characterized by comprising the following steps: adding the high-temperature potassium permanganate mother liquor into the kettle type crystallization equipment, starting the driving device (300), and after the kettle body (100) is cooled to the specified temperature, obtaining a mixture containing potassium permanganate crystals in the kettle body (100).
8. The use of the kettle-type crystallization equipment in the production of potassium permanganate as set forth in claim 7, wherein the driving device (300) is started and the cooling water circulating device is started.
9. The application of the kettle type crystallization equipment in the production of potassium permanganate according to claim 7, wherein the mixture is subjected to solid-liquid separation to obtain a mother liquor and a solid, the solid is dried to obtain potassium permanganate crystals, and the mother liquor enters the kettle body (100) for recycling.
10. The use of the kettle crystallization device in the production of potassium permanganate as claimed in claim 7, wherein the specified temperature is 30-40 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010840230.4A CN111905401A (en) | 2020-08-18 | 2020-08-18 | Kettle type crystallization equipment and application thereof in potassium permanganate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010840230.4A CN111905401A (en) | 2020-08-18 | 2020-08-18 | Kettle type crystallization equipment and application thereof in potassium permanganate production |
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| Publication Number | Publication Date |
|---|---|
| CN111905401A true CN111905401A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010840230.4A Pending CN111905401A (en) | 2020-08-18 | 2020-08-18 | Kettle type crystallization equipment and application thereof in potassium permanganate production |
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| CN (1) | CN111905401A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786756A (en) * | 2021-09-08 | 2021-12-14 | 湖南梨树园涂料有限公司 | Real mineral varnish production is with convenient shockproof auxiliary agent jar that removes |
| CN113856235A (en) * | 2021-09-29 | 2021-12-31 | 浙江大华技术股份有限公司 | Cooling crystallization control method, device, electronic equipment and system |
| CN115350498A (en) * | 2022-07-20 | 2022-11-18 | 徐姣姣 | Amino acid recycling system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002059125A (en) * | 2000-08-11 | 2002-02-26 | Hideo Kusano | Disposal device for garbage |
| CN103570075A (en) * | 2013-11-22 | 2014-02-12 | 云南建水锰矿有限责任公司 | Reactor and system for preparing potassium manganate |
| CN104646367A (en) * | 2013-11-18 | 2015-05-27 | 邵敏胜 | Self-adapting scraping and washing device for agitation vat |
| CN204656045U (en) * | 2015-06-03 | 2015-09-23 | 浙江诚泰化工机械有限公司 | A kind of crystallizing tank |
| CN106745615A (en) * | 2017-01-11 | 2017-05-31 | 启迪桑德环境资源股份有限公司 | Cooler crystallizer |
| CN206519053U (en) * | 2017-02-07 | 2017-09-26 | 绍兴星钻汽车用品科技有限公司 | A kind of agitating paddle with scraper plate |
| CN207446258U (en) * | 2017-11-16 | 2018-06-05 | 新泰市日进化工科技有限公司 | A kind of kettle equipment of triazole crystallization |
| CN207641035U (en) * | 2017-11-29 | 2018-07-24 | 重庆昌元化工集团有限公司 | Potassium permanganate OSLO crystallizes production system |
| CN207708564U (en) * | 2017-11-29 | 2018-08-10 | 白银昌元化工有限公司 | Potassium permanganate DTB crystallizes production system |
| JP2018140196A (en) * | 2017-02-20 | 2018-09-13 | 株式会社カジワラ | Scraping blade |
-
2020
- 2020-08-18 CN CN202010840230.4A patent/CN111905401A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002059125A (en) * | 2000-08-11 | 2002-02-26 | Hideo Kusano | Disposal device for garbage |
| CN104646367A (en) * | 2013-11-18 | 2015-05-27 | 邵敏胜 | Self-adapting scraping and washing device for agitation vat |
| CN103570075A (en) * | 2013-11-22 | 2014-02-12 | 云南建水锰矿有限责任公司 | Reactor and system for preparing potassium manganate |
| CN204656045U (en) * | 2015-06-03 | 2015-09-23 | 浙江诚泰化工机械有限公司 | A kind of crystallizing tank |
| CN106745615A (en) * | 2017-01-11 | 2017-05-31 | 启迪桑德环境资源股份有限公司 | Cooler crystallizer |
| CN206519053U (en) * | 2017-02-07 | 2017-09-26 | 绍兴星钻汽车用品科技有限公司 | A kind of agitating paddle with scraper plate |
| JP2018140196A (en) * | 2017-02-20 | 2018-09-13 | 株式会社カジワラ | Scraping blade |
| CN207446258U (en) * | 2017-11-16 | 2018-06-05 | 新泰市日进化工科技有限公司 | A kind of kettle equipment of triazole crystallization |
| CN207641035U (en) * | 2017-11-29 | 2018-07-24 | 重庆昌元化工集团有限公司 | Potassium permanganate OSLO crystallizes production system |
| CN207708564U (en) * | 2017-11-29 | 2018-08-10 | 白银昌元化工有限公司 | Potassium permanganate DTB crystallizes production system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786756A (en) * | 2021-09-08 | 2021-12-14 | 湖南梨树园涂料有限公司 | Real mineral varnish production is with convenient shockproof auxiliary agent jar that removes |
| CN113856235A (en) * | 2021-09-29 | 2021-12-31 | 浙江大华技术股份有限公司 | Cooling crystallization control method, device, electronic equipment and system |
| CN115350498A (en) * | 2022-07-20 | 2022-11-18 | 徐姣姣 | Amino acid recycling system |
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Application publication date: 20201110 |
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