CN214299949U - EDDHA chelate molysite purification system - Google Patents
EDDHA chelate molysite purification system Download PDFInfo
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- CN214299949U CN214299949U CN202023333366.0U CN202023333366U CN214299949U CN 214299949 U CN214299949 U CN 214299949U CN 202023333366 U CN202023333366 U CN 202023333366U CN 214299949 U CN214299949 U CN 214299949U
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Abstract
The utility model provides an EDDHA chelating molysite purification system, which belongs to the technical field of chemical equipment, and comprises a vacuum concentration unit and a centrifugal separation unit which are connected by means of pipelines; the vacuum concentration unit comprises a concentration kettle, a vacuum system and a gas-phase product receiving unit, wherein the vacuum system is communicated with the concentration kettle; and the centrifugal separation unit comprises a centrifugal separation device communicated with the discharge hole of the concentration kettle, a first storage tank communicated with the large-specific gravity material outlet of the centrifugal separation device and a second storage tank communicated with the small-specific gravity material outlet of the centrifugal separation device. The utility model provides an EDDHA chelates molysite purification system can carry out effective separation to heavy component EDDHA chelate molysite in the EDDHA chelate molysite aqueous phase product, obtains high-purity EDDHA chelate molysite.
Description
Technical Field
The utility model belongs to the technical field of chemical industry equipment, more specifically say, relate to a EDDHA chelate molysite purification system.
Background
The EDDHA chelated iron salt is high-efficiency, high-quality and super-strong active chelated iron, is used as a trace element fertilizer in agriculture, and is one of the most effective products for treating plant iron deficiency and yellow leaf disease. However, most of the methods for producing EDDHA chelated iron salts are prepared from phenol, ethylenediamine, glyoxylic acid, and iron-containing inorganic salts as raw materials under an alkaline environment provided by sodium hydroxide or potassium hydroxide, a large amount of inorganic sodium salts or potassium salts are uncontrollably generated in the reaction process, and the presence of these inorganic salts seriously affects the purity of EDDHA chelated iron salts. These EDDHA chelating iron salts containing large amounts of inorganic sodium or potassium salts can cause some soil damage. Therefore, how to ensure the quality of EDDHA chelating iron salts becomes one of the main problems in the current research.
Although the purity and the quality of the EDDHA chelated iron salt are improved to a certain extent by the existing method for preparing and refining the EDDHA chelated iron salt, a large amount of inorganic salts, organic solvents and other impurities are still inevitably introduced, and the problem of pipeline blockage and corrosion is easily caused in the using process due to the existence of a large amount of inorganic salts in the chelated product of the existing device for separating the EDDHA chelated iron salt and the inorganic salts, so that the maintenance and the maintenance cost of a large amount of equipment are increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an EDDHA chelates molysite purification system aims at improving the purity of current EDDHA chelates molysite. In order to achieve the above object, the utility model adopts the following technical scheme: providing an EDDHA chelated iron salt purification system based on treatment of an aqueous product of EDDHA chelated iron salt in an EDDHA chelated iron salt synthesis reaction, the purification system comprising a vacuum concentration unit and a centrifugal separation unit connected by means of a pipeline;
the vacuum concentration unit comprises a concentration kettle for concentrating and dehydrating the EDDHA chelated iron salt aqueous phase product, a vacuum system communicated with the concentration kettle and an air phase product receiving unit, and the bottom of the kettle body of the concentration kettle is also provided with a discharge hole for guiding out the concentrated material;
the centrifugal separation unit comprises a centrifugal separation device communicated with a discharge hole of the concentration kettle, a first storage tank communicated with a large-specific gravity material outlet of the centrifugal separation device, and a second storage tank communicated with a small-specific gravity material outlet of the centrifugal separation device.
In one embodiment, the gas-phase product receiving unit comprises: a demister, a condenser and a receiving tank which are connected with the gas phase outlet end of the concentration kettle in sequence by means of pipelines.
As another embodiment of the present application, the demister, condenser and receiving tank are a closed system, and the vacuum system is in communication with the receiving tank.
As another embodiment of this application, still be equipped with on the cauldron body of concentrated cauldron with blow the import of nitrogen system intercommunication for get rid of organic gas in the concentrated cauldron and material are remained.
As another embodiment of the application, a material pouring device is arranged on a communicating pipeline between the concentration kettle and the centrifugal separation device, and a heating jacket is sleeved outside the material pouring device.
Further, the material pouring device is a screw pump.
As another embodiment of the present application, a middle tank is further provided before the centrifugal separation device; a stirring device is arranged in the intermediate tank, and a heating jacket is sleeved outside the intermediate tank.
As another embodiment of this application, still be equipped with on the pans with the import of nitrogen blowing system intercommunication for avoid there is the material residue in the pans.
As another embodiment of the present application, the centrifugal separation device is a horizontal spiral sedimentation centrifuge.
As another embodiment of the present application, the centrifugal separation device is further communicated with a soft water washing device.
As another embodiment of the present application, the pipelines of the vacuum concentration unit and the centrifugal separation unit are stainless steel pipelines with jackets, constant temperature water flows through the jackets, and the temperature of the constant temperature water is 40-55 ℃.
The utility model provides a EDDHA chelates molysite purification system's beneficial effect lies in: compared with the prior art, the utility model discloses a vacuum concentration unit among EDDHA chelate molysite purification system dehydrates EDDHA chelate molysite aqueous phase result, treats that the material in the concentration cauldron reaches after specific solid-liquid ratio, carries remaining material to the centrifugal separation unit through the pipeline. The material concentrated to reach a specific solid-liquid ratio enters a centrifugal separation unit, and the heavy component EDDHA chelated iron salt and the light component inorganic salt in the EDDHA chelated iron salt product can be effectively separated by adjusting the centrifugal rotating speed of a centrifugal separation device, so that the purity of the separated EDDHA chelated iron salt reaches more than 99 percent, and the problem of poor separation effect of the traditional method or device for purifying and refining the EDDHA chelated iron salt is solved.
Drawings
Fig. 1 is a schematic structural diagram of an EDDHA chelating iron salt purification system according to an embodiment of the present invention;
in the figure: 1. a concentration kettle; 2. a nitrogen blowing system; 3. a demister; 4. a condenser; 5. a receiving tank; 6. a vacuum system; 7. a material pouring device; 8. an intermediate tank; 9. a centrifugal separation device; 10. stainless steel pipeline; 11. a first storage tank; 12. a second storage tank.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Referring to fig. 1, a EDDHA chelating iron salt purification system provided by the present invention will now be described. The EDDHA chelated iron salt purification system is based on the treatment of an aqueous phase product of EDDHA chelated iron salt in the EDDHA chelated iron salt synthesis reaction, and comprises a vacuum concentration unit and a centrifugal separation unit which are connected by virtue of pipelines; the vacuum concentration unit comprises a concentration kettle 1 for concentrating and dehydrating an EDDHA chelated iron salt aqueous phase product, a vacuum system 6 communicated with the concentration kettle 1 and an air phase product receiving unit, wherein the bottom of a kettle body of the concentration kettle 1 is also provided with a discharge hole for guiding out a concentrated material; and the centrifugal separation unit comprises a centrifugal separation device 9 communicated with the discharge hole of the concentration kettle 1, a first storage tank 11 communicated with the material outlet with larger specific gravity of the centrifugal separation device 9 and a second storage tank 12 communicated with the material outlet with smaller specific gravity of the centrifugal separation device 9.
The EDDHA chelate iron salt purification system that this embodiment provided separates high-purity EDDHA chelate iron salt from EDDHA chelate iron salt aqueous phase product and specifically moves the process: adding EDDHA chelated iron salt water phase product into a concentration kettle 1, dehydrating the EDDHA chelated iron salt water phase product, discharging the material through a discharge port of the concentration kettle 1 after the solid-liquid ratio of the material in the concentration kettle 1 reaches a preset value, then entering a centrifugal separation device 9, and adjusting the centrifugal rotating speed of the centrifugal separation device 9 to separate heavy component EDDHA chelated iron salt from light component inorganic salt and organic impurities in the material, wherein the heavy component EDDHA chelated iron salt enters a first storage tank 11, and the light component inorganic salt and organic impurities enter a second storage tank 12, so that the EDDHA chelated iron salt with high purity and high yield is obtained.
The utility model provides a EDDHA chelates molysite purification system's beneficial effect lies in: compared with the prior art, the utility model discloses a vacuum concentration unit among EDDHA chelate molysite purification system dehydrates EDDHA chelate molysite aqueous phase result, treats that the material in the concentrated cauldron 1 reaches after specific solid-liquid ratio, carries remaining material to the centrifugal separation unit through the pipeline. The material concentrated to reach a specific solid-liquid ratio enters a centrifugal separation unit, and the heavy component EDDHA chelated iron salt and the light component inorganic salt in the EDDHA chelated iron salt product can be effectively separated by adjusting the centrifugal rotating speed of a centrifugal separation device 9, so that the purity of the separated EDDHA chelated iron salt reaches more than 99 percent, and the problem of poor separation effect of the traditional method or equipment for purifying and refining the EDDHA chelated iron salt is solved.
As an embodiment of the present invention, referring to fig. 1, the gas-phase product receiving unit includes: a demister 3, a condenser 4 and a receiving tank 5 which are connected in sequence to the gas phase outlet end of the concentrating still 1 by means of pipelines.
Referring to fig. 1, the demister 3, the condenser 4 and the receiving tank 5 are a closed system, and the vacuum system 6 is communicated with the receiving tank 5.
The arrangement of the condenser 4 and the receiving tank 5 in the embodiment can prevent water vapor and a small amount of organic substances in the dehydration process from entering the vacuum system 6 and corroding the vacuum system 6. The demister 3 can prevent the communication pipeline between the concentration kettle 1 and the vacuum system 6 from being blocked.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, an inlet communicated with the nitrogen blowing system 2 is further disposed on the kettle body of the concentration kettle 1 for removing the organic gas and material residue in the concentration kettle 1.
Because the production process of the EDDHA chelated iron salt relates to a flammable and explosive butyl acetate extraction solvent, the concentration kettle 1 is communicated with the nitrogen blowing system 2 to realize nitrogen blowing on the whole EDDHA chelated iron salt purification system, so that firstly, the safety of the whole system can be improved, and dangerous accidents caused by mixed explosive gas in materials are avoided; secondly, can thoroughly clean up the residual material in the pipeline, avoid the appearance of jam phenomenon.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, a material pouring device 7 is disposed on the communicating pipe between the concentration kettle 1 and the centrifugal separation device 9, and a heating jacket is disposed outside the material pouring device 7.
The material pouring device 7 in the embodiment can ensure that the material concentrated to a specific solid-liquid ratio is smoothly transported to the centrifugal separation device 9 through a pipeline.
As a specific implementation mode of the embodiment of the utility model, the material pouring device 7 is a screw pump.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, a middle tank 8 is further disposed in front of the centrifugal separation device 9; a stirring device is arranged in the intermediate tank 8, and a heating jacket is sleeved outside the intermediate tank.
Set up in this embodiment and take agitating unit and heat the overhead tank 8 of pressing from both sides the cover and can make the material get into overhead tank 8 after heat to specific temperature to store concentrated material, deposit before avoiding the material to get into centrifugal separation device 9 and separate out, cause the material fault, influence effective separation of EDDHA chelate molysite among the centrifugal separation device 9. Meanwhile, the material is heated to a specific temperature, so that effective separation of EDDHA chelated iron salt and inorganic salt in the material in the centrifugal separation device 9 can be promoted.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, an inlet communicated with the nitrogen blowing system 2 is further disposed on the intermediate tank 8 for avoiding material residue in the intermediate tank 8.
The nitrogen blowing system 2 in the embodiment can blow the intermediate tank 8 after the centrifugal separation is finished, so that the material residue in the intermediate tank 8 is avoided.
As a specific implementation manner of the embodiment of the present invention, the centrifugal separation device 9 is a horizontal spiral sedimentation centrifugal apparatus.
The relative motion between the screw and the rotary drum in the horizontal screw settling centrifugal equipment is realized by a differential mechanism, the shell of the differential mechanism is connected with the rotary drum, the output shaft is connected with the screw, and the input shaft is connected with an auxiliary motor. The main motor drives the rotary drum to rotate and simultaneously drives the differential shell to rotate, and the input shaft is connected with the auxiliary motor which generates braking torque, so that the planet wheel is driven to operate according to the designed transmission relationship, the torque is transmitted to the spiral according to a certain proportion relationship, and the continuous separation of the horizontal spiral sedimentation centrifugal equipment on materials is realized. According to the specific gravity difference of the EDDHA chelated iron salt, the inorganic salt and the organic impurities in the EDDHA chelated iron salt aqueous phase product, the EDDHA chelated iron salt with larger specific gravity is deposited on the inner wall of the rotary drum by utilizing the centrifugal force generated by high-speed rotation of a horizontal spiral sedimentation centrifugal device, and the EDDHA chelated iron salt deposited on the inner wall of the rotary drum is continuously scraped by a spiral blade which moves relative to the rotary drum and is conveyed to a first storage tank 11; the separated clear liquid, namely the inorganic salt with low content of effective components is conveyed to the second storage tank 12, so that the separation efficiency of the EDDHA chelated iron salt and the inorganic salt is remarkably improved.
As a specific implementation manner of the embodiment of the present invention, the centrifugal separation device 9 is further communicated with a soft water washing device.
After the separation of the EDDHA chelated iron salt and the inorganic salt is finished, the soft water washing device is used for washing and cleaning the centrifugal separation device 9, so that the serious wall-forming problem of the material in the centrifugal separation device 9 after being placed for a long time can be avoided.
As a specific implementation manner of the embodiment of the utility model, the pipeline connecting the vacuum concentration unit and the centrifugal separation unit is a stainless steel pipeline 10 with a jacket, constant temperature water flows through the inside of the jacket, and the temperature of the constant temperature water is 40-55 ℃.
In this embodiment, the temperature of the thermostatic water is set to 40-55 ℃ to prevent inorganic salts in the material from precipitating and blocking the stainless steel pipeline 10, and the temperature can further promote the separation of EDDHA chelated iron salts and inorganic salts in the centrifugal separation device 9.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An EDDHA chelated iron salt purification system is based on treatment of an aqueous phase product of EDDHA chelated iron salt in an EDDHA chelated iron salt synthesis reaction, and is characterized in that the purification system comprises a vacuum concentration unit and a centrifugal separation unit which are connected by means of pipelines;
the vacuum concentration unit comprises a concentration kettle for concentrating and dehydrating the EDDHA chelated iron salt aqueous phase product, a vacuum system communicated with the concentration kettle and an air phase product receiving unit, and the bottom of the kettle body of the concentration kettle is also provided with a discharge hole for guiding out the concentrated material;
the centrifugal separation unit comprises a centrifugal separation device communicated with a discharge hole of the concentration kettle, a first storage tank communicated with a large-specific gravity material outlet of the centrifugal separation device, and a second storage tank communicated with a small-specific gravity material outlet of the centrifugal separation device.
2. The EDDHA chelating iron salt purification system of claim 1, wherein the gas phase product receiving unit comprises: a demister, a condenser and a receiving tank which are connected with the gas phase outlet end of the concentration kettle in sequence by means of pipelines.
3. The EDDHA chelating iron salt purification system as claimed in claim 2, wherein the demister, condenser and receiving tank are a closed system, and the vacuum system is in communication with the receiving tank.
4. The EDDHA chelating ferric salt purification system of claim 3, wherein the body of the concentration tank is further provided with an inlet in communication with a nitrogen-blowing system for removing organic gases and material residues from the concentration tank.
5. The EDDHA chelating ferric salt purification system of claim 1, wherein a pouring device is disposed on a communication pipeline between the concentration tank and the centrifugal separation device, and a heating jacket is sleeved outside the pouring device.
6. A EDDHA chelated iron salt purification system as claimed in claim 1 or 5, characterized by the fact that there is also an intermediate tank before the centrifugal separation device; a stirring device is arranged in the intermediate tank, and a heating jacket is sleeved outside the intermediate tank.
7. The EDDHA chelating iron salt purification system as claimed in claim 6, wherein the intermediate tank is further provided with an inlet in communication with a nitrogen purge system for avoiding material residue in the intermediate tank.
8. The EDDHA chelating iron salt purification system of claim 1, wherein the centrifugal separation device is a horizontal spiral sedimentation centrifuge.
9. The EDDHA chelating iron salt purification system as claimed in claim 1, wherein the centrifugal separation device is further connected to a soft water washing device.
10. The EDDHA sequestering iron salt purification system according to claim 1, wherein a line connecting the vacuum concentration unit and the centrifugal separation unit is a jacketed stainless steel pipe, and constant temperature water is circulated inside the jacket, and the temperature of the constant temperature water is 40-55 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023333366.0U CN214299949U (en) | 2020-12-31 | 2020-12-31 | EDDHA chelate molysite purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023333366.0U CN214299949U (en) | 2020-12-31 | 2020-12-31 | EDDHA chelate molysite purification system |
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| Publication Number | Publication Date |
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| CN214299949U true CN214299949U (en) | 2021-09-28 |
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| CN202023333366.0U Active CN214299949U (en) | 2020-12-31 | 2020-12-31 | EDDHA chelate molysite purification system |
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