CN110665250A - Sodium percarbonate reaction crystallization kettle - Google Patents
Sodium percarbonate reaction crystallization kettle Download PDFInfo
- Publication number
- CN110665250A CN110665250A CN201911055204.4A CN201911055204A CN110665250A CN 110665250 A CN110665250 A CN 110665250A CN 201911055204 A CN201911055204 A CN 201911055204A CN 110665250 A CN110665250 A CN 110665250A
- Authority
- CN
- China
- Prior art keywords
- stirring
- kettle body
- sodium percarbonate
- hydrogen peroxide
- wall
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
- C01B15/10—Peroxyhydrates; Peroxyacids or salts thereof containing carbon
- C01B15/103—Peroxyhydrates; Peroxyacids or salts thereof containing carbon containing only alkali metals as 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
A sodium percarbonate reaction crystallization kettle comprises a kettle body, a stirring part and a feeding part; a bottom liquid zone with the volume of 25% of the volume of the kettle body is arranged at the bottom in the kettle body, and a sodium chloride solution is arranged in the bottom liquid zone; the bottom of the bottom liquid area is provided with a discharge hole with a valve; the stirring part comprises a motor and a stirring shaft in transmission connection with an output shaft of the motor, the stirring shaft is connected with a stirring element, and the stirring shaft and the stirring element are both positioned in the kettle body; the feeding part comprises a sodium carbonate solution feeding port and a hydrogen peroxide solution feeding port. The sodium percarbonate reaction crystallization kettle has the advantages that reaction materials are free of impurities, the decomposition rate of hydrogen peroxide is low, the contact area of material reaction is increased due to the arrangement of the atomizing nozzle, the materials can be uniformly mixed due to the arrangement of the first stirring unit and the second stirring unit, the uniform distribution of sodium percarbonate particles is guaranteed, the product quality is stable, the operability is strong, and the practical value is high.
Description
Technical Field
The invention belongs to the technical field of sodium percarbonate preparation, and particularly relates to a sodium percarbonate reaction crystallization kettle.
Background
Sodium percarbonate is a novel oxygen bleaching agent, integrates washing, bleaching and sterilization, is nontoxic and tasteless, has mild bleaching performance and does not pollute the environment. In addition, it can be used as oxygen supply source, food preservative, oxidant, metal surface treating agent, etc.
The industrial production of sodium percarbonate mainly comprises a dry method and a wet method. The dry method has complex equipment, harsh technical conditions, high energy consumption and poor product stability. The wet production is that hydrogen peroxide and sodium carbonate aqueous solution are reacted, crystallized, separated and dried in a batch type or continuous type crystallizer at a certain temperature to obtain a product, and mother liquor is returned for use.
In the wet production process of sodium percarbonate, the problems of nonuniform particle size, poor product stability and the like are easily caused due to nonuniform mixing of sodium carbonate and hydrogen peroxide.
Disclosure of Invention
The invention aims to provide a sodium percarbonate reaction crystallization kettle with simple structure and good use effect.
In order to solve the technical problems, the invention provides the following technical scheme: a sodium percarbonate reaction crystallization kettle comprises a kettle body, a stirring part and a feeding part;
a bottom liquid zone with the volume of 25% of the volume of the kettle body is arranged at the bottom in the kettle body, and a sodium chloride solution is arranged in the bottom liquid zone; the bottom of the bottom liquid area is provided with a discharge hole with a valve;
the stirring part comprises a motor and a stirring shaft in transmission connection with an output shaft of the motor, the stirring shaft is connected with a stirring element, and the stirring shaft and the stirring element are both positioned in the kettle body;
the feeding part comprises a sodium carbonate solution feeding port and a hydrogen peroxide solution feeding port, the sodium carbonate solution feeding port is connected with a sodium carbonate solution pipeline with the tail end positioned in the kettle body, and a Y-shaped filter is arranged on the sodium carbonate solution pipeline; the hydrogen peroxide solution feed inlet is connected with a hydrogen peroxide solution pipeline with the tail end positioned in the kettle body, and a heat exchanger is arranged on the hydrogen peroxide solution pipeline.
The side wall of the kettle body comprises an inner wall and an outer wall which is parallel to the inner wall and is positioned on the outer side of the inner wall, and a cooling gap is reserved between the inner wall and the outer wall; the kettle body outside is provided with the water pump, and the delivery port and the cooling clearance intercommunication of water pump.
The lateral wall of the kettle body is provided with an upward inclined barrel which is communicated with the interior of the kettle body, and the top end of the barrel is provided with a transparent glass window.
The stirring element comprises a first stirring unit and a second stirring unit positioned below the first stirring unit, the first stirring unit comprises two stirring blades which are connected in a cross mode, and the included angle between the two stirring blades is 30-90 degrees; the second stirring unit comprises a stirring block with an inverted triangular longitudinal section, and the vertical angle of the longitudinal section of the stirring block is 60-120 degrees.
The tail end of the sodium carbonate solution pipeline is provided with an atomizing nozzle, and the tail end of the hydrogen peroxide solution pipeline is also provided with an atomizing nozzle.
The aperture of the atomizing nozzle is 3 mm.
The display screen is arranged on the side wall of the kettle body, the temperature sensor is arranged at the lower part in the kettle body, the signal output end of the temperature sensor is connected with the signal input end of the controller, the signal output end of the controller is connected with the display driving chip, and the display driving chip drives the display screen to work.
The external bottom of cauldron is provided with the supporting seat.
Through the technical scheme, the invention has the beneficial effects that:
1. the Y-shaped filter is arranged at the feed inlet of the sodium carbonate solution, so that insoluble impurities in the sodium carbonate solution can be removed, and the influence of the impurities on the product quality is reduced; the heat exchanger arranged on the hydrogen peroxide solution feeding hole can reduce the temperature of hydrogen peroxide, thereby not only reducing the decomposition rate of hydrogen peroxide, but also avoiding the heat generated in the chemical reaction process from generating large fluctuation to the temperature; the sodium carbonate solution and the hydrogen peroxide enter the kettle body through the atomizing nozzle, so that the contact area between reactants can be increased, and the uniform mixing of the sodium carbonate solution and the hydrogen peroxide is promoted.
2. The stirring part can stir the solution, and on the basis of the atomizing nozzle, the uniform mixing of the sodium carbonate solution and the hydrogen peroxide is ensured.
3. A bottom liquid area is arranged in the kettle body, and a sodium chloride solution is arranged in the bottom liquid area in advance, so that conditions are created for the precipitation of sodium percarbonate grains in the reaction process.
4. The stirring portion that sets up includes first stirring component and second stirring component, and first stirring component and second stirring component can stir the solution of well upper portion and lower part and bottom respectively, have fully guaranteed the homogeneous mixing of sodium carbonate solution with hydrogen peroxide solution, especially to the material that sinks to the reation kettle bottom.
5. The cooling clearance that sets up is connected with the water pump, can be to the internal low temperature environment that creates of cauldron, and the display screen can provide data support for the adjustment of temperature.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
A sodium percarbonate reaction crystallization kettle is shown in figure 1 and comprises a kettle body 1, wherein a supporting seat 15 is arranged at the outer bottom of the kettle body 1, and the supporting seat 15 is positioned on the outer side of the kettle body 1 and can support the kettle body 1.
The side wall of the kettle body 1 comprises an inner wall and an outer wall which is parallel to the inner wall and is positioned at the outer side of the inner wall, and a cooling gap 2 is reserved between the inner wall and the outer wall; the outer side of the kettle body 1 is provided with a water pump, and a water outlet of the water pump is communicated with the cooling gap 2. In the reaction process, in order to ensure proper temperature, low-temperature cooling water is pumped into the kettle body 1 through a water pump, and the cooling water can take away heat generated in the reaction process in time, so that the quality of sodium percarbonate is improved. When the water cooling device works, the water inlet of the water pump is connected with a water source of external cooling water. The cooling gap 2 provides a low temperature condition for the reaction process.
In order to know the temperature in the kettle body 1 in real time, a display screen is arranged on the side wall of the kettle body 1, a temperature sensor 13 (with the model of DS18B 20) is arranged AT the lower part in the kettle body 1, the signal output end of the temperature sensor 13 is connected with the signal input end of a controller, and the controller can be a single chip microcomputer with the model of AT89S 51. The signal output end of the controller is connected with a display driving chip (the model is MAX 7219), the display driving chip drives a display screen, the MAX7219 is a serial input/output common cathode nixie tube display driving chip produced by MAXIM company, one MAX7219 can drive 8 7-segment (including decimal point total 8-segment) digital LEDs, LED strip line graphic displays or 64 discrete LED light-emitting diodes, and workers can select the model of the display screen according to requirements.
The temperature sensor 13 collects temperature signals in the kettle body 1, the collected temperature signals are transmitted to the controller, the controller outputs signals to the display driving chip according to the received temperature signals, the display screen is driven through the display driving chip, and therefore the reaction temperature in the kettle body 1 can be observed conveniently.
How temperature sensor 13 gathers the temperature signal to and transmit the temperature signal who gathers to the singlechip, the singlechip is according to received signal output signal to showing driver chip, shows the temperature of gathering through showing driver chip drive display screen on and be mature prior art.
In order to avoid overhigh temperature in the kettle body 1 and incapability of timely finding by workers, the signal output end of the controller is connected with an alarm circuit, the alarm circuit comprises a buzzer and a buzzer driving circuit, the signal output end of the controller is connected with the buzzer driving circuit, and the buzzer driving circuit drives the buzzer to work. Temperature sensor 13 gathers the temperature signal in the cauldron body 1 to the temperature signal who will gather transmits the controller, and the controller is according to received temperature signal output signal to display driver chip and warning drive circuit, through showing driver chip drive display screen, warning drive circuit drive buzzer's work, thereby when the high temperature, buzzer can send the buzzing sound and remind the staff, cools down in the cauldron body 1.
Wherein, warning drive circuit is mature prior art, and bee calling organ is the product of selling on the market.
The bottom is provided with the bottom liquor district 14 that the volume is 1 volume 25% of the cauldron body in cauldron body 1, be provided with sodium chloride solution in the bottom liquor district 14, wherein sodium chloride solution is ripe prior art, and the mass concentration of sodium chloride solution in this embodiment is 10%, has carried out the injeciton to the volume in bottom liquor district 14 in this embodiment to influence the normal clear of reaction has been avoided.
A discharge port 16 with a valve is arranged at the bottom of the base liquid area 14, and after the preparation is finished, the valve 17 can be opened to take out the sodium percarbonate so as to realize the blanking.
A feeding part is arranged on the kettle body 1 and comprises a sodium carbonate solution feeding port and a hydrogen peroxide solution feeding port, a sodium carbonate solution pipeline 6 with the tail end positioned in the kettle body 1 is connected to the sodium carbonate solution feeding port, and a Y-shaped filter 7 is arranged on the sodium carbonate solution pipeline 6; the hydrogen peroxide solution feed inlet is connected with a hydrogen peroxide solution pipeline 9 with the tail end positioned in the kettle body 1, and a heat exchanger 10 is arranged on the hydrogen peroxide solution pipeline 9. The temperature of hydrogen peroxide is reduced by the heat exchanger 10 before the hydrogen peroxide enters the kettle body 1, so that the decomposition rate of the hydrogen peroxide is reduced, and the heat generated in the chemical reaction process is prevented from generating large fluctuation to the temperature.
In order to improve the mixing effect of the sodium carbonate solution and the hydrogen peroxide solution, the tail end of the sodium carbonate solution pipeline 6 is provided with an atomizing nozzle 8, and the tail end of the hydrogen peroxide solution pipeline 9 is also provided with the atomizing nozzle 8. The atomizer 8 can atomize both sodium carbonate solution and hydrogen peroxide solution to increase the contact area of the sodium carbonate solution and the hydrogen peroxide solution.
The aperture of the atomizing nozzle 8 is 3mm, so that the work efficiency is improved on the basis of ensuring the atomizing effect.
Still be provided with the stirring portion in the cauldron body 1, the stirring portion can stir the liquid in the cauldron body 1, and the stirring portion includes motor 3, the (mixing) shaft 11 of being connected with motor 3's output shaft transmission, is connected with the stirring component on the (mixing) shaft 11, and (mixing) shaft 11 and stirring component all are located the cauldron body 1 inside. The stirring element comprises a first stirring unit and a second stirring unit positioned below the first stirring unit, the first stirring unit comprises two stirring blades 4 which are connected in a cross mode, and the included angle between the two stirring blades 4 is 30-90 degrees, preferably 60 degrees; the second stirring unit comprises a stirring block 5 with an inverted triangular longitudinal section, and the vertical angle of the longitudinal section of the stirring block 5 is 60-120 degrees, preferably 80 degrees. The first stirring unit and the second stirring unit fully ensure the uniform mixing of the materials, particularly the materials sinking to the bottom in the kettle body 1.
In order to facilitate observation of the reaction condition in the kettle body 1, an upward inclined barrel is arranged on the side wall of the kettle body 1, the barrel is communicated with the interior of the kettle body 1, and the top end of the barrel is provided with a transparent glass window 12. The staff can observe the working condition in the kettle body 1 through the glass window 12, and the use is convenient.
During operation, a sodium carbonate solution and a hydrogen peroxide solution respectively enter a sodium carbonate solution pipeline 6 and a hydrogen peroxide solution pipeline 9 through a sodium carbonate solution feeding port and a hydrogen peroxide solution feeding port, the sodium carbonate solution is filtered by a Y-shaped filter 7 and atomized by an atomizing nozzle 8 to enter the kettle body 1, and the hydrogen peroxide solution is cooled by a heat exchanger 10 and then atomized by the atomizing nozzle 8 to enter the kettle body 1. Meanwhile, the stirring part stirs the solution in the kettle body 1 to realize the full mixing of the hydrogen peroxide solution and the sodium carbonate solution.
The sodium carbonate solution and the hydrogen peroxide solution react in the kettle body 1, heat generated in the reaction process is taken away by cooling water in the cooling gap 2, so that the reaction temperature is not overhigh, and sodium chloride in the bottom liquid zone 14 can realize the precipitation of sodium percarbonate crystals.
The sodium percarbonate reaction crystallization kettle has the advantages that reaction materials are free of impurities, the decomposition rate of hydrogen peroxide is low, the contact area of material reaction is increased due to the arrangement of the atomizing nozzle 8, the materials can be uniformly mixed due to the arrangement of the first stirring unit and the second stirring unit, the uniform distribution of sodium percarbonate particles is guaranteed, the product quality is stable, the operability is strong, and the practical value is high.
Claims (8)
1. A sodium percarbonate reaction crystallization kettle is characterized in that: comprises a kettle body, a stirring part and a feeding part;
a bottom liquid zone with the volume of 25% of the volume of the kettle body is arranged at the bottom in the kettle body, and a sodium chloride solution is arranged in the bottom liquid zone; the bottom of the bottom liquid area is provided with a discharge hole with a valve;
the stirring part comprises a motor and a stirring shaft in transmission connection with an output shaft of the motor, the stirring shaft is connected with a stirring element, and the stirring shaft and the stirring element are both positioned in the kettle body;
the feeding part comprises a sodium carbonate solution feeding port and a hydrogen peroxide solution feeding port, the sodium carbonate solution feeding port is connected with a sodium carbonate solution pipeline with the tail end positioned in the kettle body, and a Y-shaped filter is arranged on the sodium carbonate solution pipeline; the hydrogen peroxide solution feed inlet is connected with a hydrogen peroxide solution pipeline with the tail end positioned in the kettle body, and a heat exchanger is arranged on the hydrogen peroxide solution pipeline.
2. A sodium percarbonate reaction vessel according to claim 1, characterized in that: the side wall of the kettle body comprises an inner wall and an outer wall which is parallel to the inner wall and is positioned on the outer side of the inner wall, and a cooling gap is reserved between the inner wall and the outer wall; the kettle body outside is provided with the water pump, and the delivery port and the cooling clearance intercommunication of water pump.
3. A sodium percarbonate reaction vessel according to claim 2, characterized in that: the lateral wall of the kettle body is provided with an upward inclined barrel which is communicated with the interior of the kettle body, and the top end of the barrel is provided with a transparent glass window.
4. A sodium percarbonate reaction vessel according to claim 3, characterized in that: the stirring element comprises a first stirring unit and a second stirring unit positioned below the first stirring unit, the first stirring unit comprises two stirring blades which are connected in a cross mode, and the included angle between the two stirring blades is 30-90 degrees; the second stirring unit comprises a stirring block with an inverted triangular longitudinal section, and the vertical angle of the longitudinal section of the stirring block is 60-120 degrees.
5. A sodium percarbonate reaction vessel according to claim 4, characterized in that: the tail end of the sodium carbonate solution pipeline is provided with an atomizing nozzle, and the tail end of the hydrogen peroxide solution pipeline is also provided with an atomizing nozzle.
6. A sodium percarbonate reaction crystallization kettle according to claim 5, characterized in that: the aperture of the atomizing nozzle is 3 mm.
7. A sodium percarbonate reaction vessel according to any one of claims 1 to 6, characterized in that: the display screen is arranged on the side wall of the kettle body, the temperature sensor is arranged at the lower part in the kettle body, the signal output end of the temperature sensor is connected with the signal input end of the controller, the signal output end of the controller is connected with the display driving chip, and the display driving chip drives the display screen to work.
8. A sodium percarbonate reaction vessel according to claim 7, characterized in that: the external bottom of cauldron is provided with the supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055204.4A CN110665250A (en) | 2019-10-31 | 2019-10-31 | Sodium percarbonate reaction crystallization kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055204.4A CN110665250A (en) | 2019-10-31 | 2019-10-31 | Sodium percarbonate reaction crystallization kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110665250A true CN110665250A (en) | 2020-01-10 |
Family
ID=69085510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911055204.4A Pending CN110665250A (en) | 2019-10-31 | 2019-10-31 | Sodium percarbonate reaction crystallization kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110665250A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346397A (en) * | 2020-03-11 | 2020-06-30 | 天津大学 | Feeding equipment suitable for dissolution crystallization or reaction crystallization |
-
2019
- 2019-10-31 CN CN201911055204.4A patent/CN110665250A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346397A (en) * | 2020-03-11 | 2020-06-30 | 天津大学 | Feeding equipment suitable for dissolution crystallization or reaction crystallization |
| CN111346397B (en) * | 2020-03-11 | 2022-03-29 | 天津大学 | Feeding equipment suitable for dissolution crystallization or reaction crystallization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110665250A (en) | Sodium percarbonate reaction crystallization kettle | |
| CN210964014U (en) | Sodium percarbonate reaction crystallization kettle | |
| CN215781804U (en) | Impurity removing device for production and processing of liquid sodium methoxide | |
| CN214070662U (en) | Agricultural product is planted and is used cultivation frame | |
| CN211133946U (en) | Temperature and pressure automatic control device for lamivudine chlorination reaction | |
| CN213434480U (en) | Novel reaction kettle | |
| CN209721607U (en) | It is used to prepare the high efficiency mixture manufacturing device of potassium nitrate | |
| CN210473107U (en) | Ribavirin pure water crystallization device | |
| CN217093182U (en) | High-purity carbon dioxide purification equipment | |
| CN208809510U (en) | A kind of efficient crystallization system for during Production of Barium Chloride | |
| CN212740762U (en) | Device for preparing copper sulfate in multistage circulation manner | |
| CN214167371U (en) | High-efficient calcium carbonate carbonizer | |
| CN216879099U (en) | Diagnostic reagent's fluid reservoir of joining in marriage | |
| CN215440473U (en) | Fixed bed enzyme catalysis continuous flow reaction device of sitagliptin and intermediate thereof | |
| CN216654218U (en) | Yoghourt cooling and stirring device | |
| CN214514403U (en) | Polyglutamic acid and chitosan oligosaccharide adding device for roller granulation | |
| CN211255959U (en) | A cooling device for brown sugar production | |
| CN213668892U (en) | Microbial manure culture medium agitating unit with heat preservation effect | |
| CN218218313U (en) | A maintenance equipment for landscape plant plants | |
| CN218280624U (en) | A quick crystallization equipment for monosodium glutamate production | |
| CN217579028U (en) | Titanium oxygenation dissolves copper ware | |
| CN220878842U (en) | Alkali boiling device for red phosphorus production | |
| CN215609458U (en) | Rapid crystallization equipment of potassium fluotitanate | |
| CN220000029U (en) | Automatic mixing irrigation device | |
| CN217025980U (en) | Nutrient solution supply device for cell culture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 463400 no.439, east section of Zhonghua Avenue, Yicheng District, Zhumadian City, Henan Province Applicant after: HENAN JUNHUA DEVELOPMENT Co.,Ltd. Address before: 463400 shanghecheng e-commerce operation center, east of Dexin Road, Pingyu County, Zhumadian City, Henan Province Applicant before: HENAN JUNHUA DEVELOPMENT Co.,Ltd. |
|
| CB02 | Change of applicant information |