Circumferential single-side filtering hollow barrel reaction and concentration all-in-one machine

Abstract

The invention provides a reaction and concentration all-in-one machine with a circumferential single-side filtering hollow barrel, and belongs to the technical field of concentrators. The device comprises a circumferential single-side filtering hollow barrel, the circumference of the circumferential single-side filtering hollow barrel is arranged near the middle part of a reaction concentrator barrel with a feeding pipe and an overflow discharging pipe, and the circumferential single-side filtering hollow barrel is communicated with the reaction concentrator barrel and is used for controlling the stability of a reaction liquid level in the reaction concentrator barrel through suction filtration and / or pressurization and improving the concentration of the solid quantity of a reaction liquid. The circumferential single-side filtering hollow barrel is arranged near the middle part of the barrel body of the reaction concentrator and is communicated with the barrel body, so that independent concentration equipment can be reduced, the occupied space is reduced, the energy density of a product is increased, and the solid content is increased.

Description

Technical Field

[0001] The invention relates to the technical field of concentrators, and in particular to a circumferential single-sided filtering hollow barrel reaction concentrator integrated machine. Background Art

[0002] In the invention patents with application numbers CN201910441806.7 and CN201810563797.4, the concentrator and the reactor are independent of each other and connected by pipelines or intermediate tanks, resulting in a longer overall process and a large volume of the reaction zone, which has a relatively large impact on the rapid increase in the solid concentration of the reaction system. The crystal growth process during the reaction concentration cannot be quickly corrected, ultimately affecting the overall quality of the product. Summary of the invention

[0003] In view of this, in order to solve the above-mentioned deficiencies in the prior art, the present invention provides a circumferential single-sided filtering hollow barrel reaction concentrator integrated machine, which can reduce independent concentration equipment, reduce floor space, increase product energy density and improve solid content by arranging the circumferential single-sided filtering hollow barrel near the middle of the reaction concentrator cylinder and connecting it.

[0004] To achieve the above object, the present invention provides the following technical solutions: A peripheral single-sided filtering hollow barrel reaction concentration integrated machine, comprising: The peripheral single-sided filtering hollow barrel is arranged near the middle of the reaction concentrator cylinder with a feed pipe and an overflow discharge pipe, and is connected to the reaction concentrator cylinder for suction filtration and / or pressurization to control the stability of the reaction liquid level in the reaction concentrator cylinder and to increase the solid concentration of the reaction liquid.

[0005] Preferably, the peripheral single-sided filtering hollow barrel has an inner surface and an outer surface, the inner surface is a microporous surface, the outer surface is a non-porous surface, and the inner surface is flush with the inner surface of the reaction concentrator cylinder to prevent uneven flow of the fluid at the connection between the inner surface of the cylinder and the filtering surface.

[0006] Preferably, the guide channel in the peripheral single-sided filtering hollow barrel is connected with a backwash pipeline and a filtered liquid outlet pipe; The backwash pipeline is connected to the filtered liquid outlet pipeline, and a valve is arranged on the pipeline connecting the two.

[0007] Preferably, it also includes: The stirring device is arranged in the cylinder of the reaction concentrator, and a plurality of stirring blades are arranged on the stirring shaft thereof, so as to make the fluid all turn up in the middle and press down in the circumference or turn up in the circumference by pressing down in the middle.

[0008] Preferably, the outlet end of the feed pipe extends to above the end side of the lower stirring blade of the stirring device.

[0009] Preferably, the outlet end of the feed pipe has a bottom seal, the bottom seal and / or the end are elliptical holes and / or cross slot holes, and the insertion tube or the end of the feed pipe is a flat elliptical tube.

[0010] Preferably, it also includes: The online sampling device is arranged inside the reaction concentrator cylinder and is located around the peripheral single-sided filtering hollow barrel.

[0011] Preferably, the outer wall of the reaction concentrator cylinder is provided with a jacket and / or a thermal insulation layer.

[0012] Preferably, a temperature transmitter, a pressure transmitter, a pH transmitter and a liquid level transmitter are provided on the reaction concentrator cylinder.

[0013] Preferably, the reaction concentrator cylinder is also provided with a vent valve, an air supply valve and a discharge valve.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The circumferential single-sided filtering hollow barrel reaction concentrator provided by the present invention can reduce independent concentration equipment, reduce floor space, increase product energy density, and improve solid content by arranging the circumferential single-sided filtering hollow barrel near the middle of the reaction concentrator cylinder and connecting it.

[0015] The present invention can also improve the uniformity of product particle size, make the product particle size distribution narrower, optimize the flow direction of the stirring fluid, improve the reaction environment, make the reaction in the intense zone more complete, improve the synthesis efficiency, increase the direct yield, reduce the thickness of the product adhesion layer on the filtering surface, improve the filtering efficiency, reduce the volume of the reaction kettle, reduce the cost, and be more intelligent.

[0016] In the present invention, when the volume of the reactor remains unchanged, the volume of the intermediate tank and the independent concentrator will greatly increase the total volume of the reaction. When the feed amount remains unchanged, the larger the volume, the slower the concentration of the solid content of the reaction liquid increases; the smaller the volume, the faster the particle size of the solid product particles grows, and the corresponding product particle density changes from loose to dense, so the energy density is also correspondingly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; In the figure, 1. stirring blade; 2. lower head jacket and insulation layer; 3. lower head; 4. reaction concentrator cylinder; 5. cylinder jacket and insulation layer; 6. feed pipe; 7. online sampling device; 8. overflow discharge regulating valve; 9. reaction concentrator upper cover; 10. temperature transmitter; 11. pressure transmitter; 12. pH transmitter; 13. liquid level transmitter; 14. stirring reducer; 15. stirring motor frequency converter; 16. vent valve; 17. air supply valve; 18. support; 19. peripheral single-sided filtering hollow barrel; 20. stirring shaft; 21. filtered liquid outlet pipe; 22. back-blowing valve; 23. automatic PLC control cabinet; 24. vacuum device; 25. filtered liquid outlet regulating valve; 26. flow meter; 27. filtered liquid outlet pneumatic switch valve. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 As shown, the present invention provides a peripheral single-sided filtering hollow barrel 19 reaction concentration integrated machine, comprising: The circumferential single-sided filtering hollow barrel 19 is arranged around the middle of the reaction concentrator barrel 4 with a feed pipe 6 and a discharge pipe, and is connected to the reaction concentrator barrel 4, and is used for suction filtration and or pressure control of the reaction liquid level in the reaction concentrator barrel 4 and improving the concentration of the reaction liquid. Among them, it is preferred that the circumferential single-sided filtering hollow barrel 19 has an inner surface and an outer surface, the inner surface is a microporous surface, and the outer surface is a non-porous surface. The inner surface is flush with the inner surface of the reaction concentrator barrel 4, which is used to prevent the uneven flow of the fluid at the connection between the inner surface of the barrel and the filtering surface, and improve the stability of the reaction system product. It is preferred that the diversion channel in the circumferential single-sided filtering hollow barrel 19 is connected with a backwash pipeline and a filtrate outlet pipe 21; the backwash pipeline is connected to the filtrate outlet pipeline, and a valve is provided on the pipeline connecting the two. Backwashing / backwashing is performed through the backwash pipeline (backwashing / backwashing pipeline).

[0022] The present invention is an improvement on the existing concentrator, and a single-sided filtering hollow barrel 19 is arranged in the middle of the existing concentrator and connected to the circumference, which is used to control the stability of the reaction liquid level in the reaction concentrator cylinder 4 by suction filtration and improve the concentration of the reaction liquid, so as to realize the control of the solid content of the reaction liquid in the reaction concentrator cylinder 4. Among them, the concentrator can select a conventional concentrator, and no special requirements are made for this.

[0023] like Figure 1 As shown, the present invention provides a specific implementation of the above-mentioned concentrator, which is as follows: The concentrator includes: The reaction concentrator barrel 4 has a feed pipe 6 and a discharge pipe, a lower head 3 at the bottom, and a reaction concentrator upper cover 9 at the top, preferably connected together by bolts. A discharge pipe is arranged near the side wall of the reaction concentrator barrel 4 (qualified solid product particles in the upper liquid surface area produced by the reaction are discharged through the discharge pipe), and a regulating valve 8 is arranged on the discharge pipe. A discharge pipe is opened at the bottom of the reaction concentrator barrel 4 (qualified solid product particles produced by the reaction are discharged through the discharge pipe), and a discharge valve is arranged on the discharge pipe.

[0024] The feed pipe 6 has multiple Figure 1 The six feed pipes 6 shown as A\B\C\D\E\F extend to the upper end side of the lower stirring blade 1. The outlet end of the feed pipe 6 has a bottom seal, and the bottom seal and / or the end are elliptical holes and / or cross slots, and the insertion pipe or the end of the feed pipe 6 is a flat elliptical tube.

[0025] The feed pipe refers to six feed pipes 6 for feeding materials into A\B\C\D\E\F. The feed pipe is preferably a hollow steel pipe, which extends to the upper side of the stirring blade. The outlet end of the feed pipe extends to the upper side of the stirring blade. The round tube is deformed into a flat oval tube, or the bottom is sealed with a flat plate, and an oval hole and / or a cross slot hole are set on the flat plate.

[0026] The reaction concentrator barrel 4 is provided with a temperature transmitter 10, a pressure transmitter 11, a pH transmitter 12 and a liquid level transmitter 13, which are fixed on the concentrator upper cover after passing through the concentrator upper cover. The concentrator upper cover is also provided with a vent valve 16 and a gas supply valve 17, which are used to discharge excess gas when the pressure in the reaction concentrator is high during pulse backwashing or backflushing, to ensure that the pressure in the reaction concentrator is within a suitable range; when the pressure is low, the gas supply valve is used to adjust the pressure in the reaction concentrator.

[0027] A support 18 may also be provided on the reaction concentrator barrel 4 to fix the reaction concentrator barrel 4 and ensure the stability of operation.

[0028] The stirring device is arranged in the reaction concentrator barrel 4 and is used to stir the reaction liquid in the reaction concentrator barrel 4. During the whole operation process, the stirring speed is normally maintained at 80%. Every 1 to 5 minutes, the stirring speed is increased to 100% for 0.01 to 5 seconds in a pulsed manner.

[0029] The stirring device preferably comprises: A stirring reducer 14, which has a stirring motor frequency converter 15, for driving a stirring shaft 20 connected to its output end to rotate; The stirring blades 1 are arranged on the stirring shaft 20 in multiple layers. The fluid flowing at the end generated by the rotation of the stirring blades 1 is mixed with the fluid flowing at the outlet of the lower end of the feed pipe 6 to form a mixed flow, and at the same time, a violent synthetic crystal growth reaction or nucleation reaction is carried out in the violent reaction zone V1, so that the reaction is more complete.

[0030] The stirring blade 1 is used to make the fluid all turn up in the middle and press down around the circumference or press down in the middle and turn up around the circumference; The jacket is arranged around the outer wall of the reaction concentrator barrel 4 and is used to control the reaction temperature in the reaction concentrator barrel 4. It is composed of a lower head jacket and a barrel jacket, wherein a heat insulation layer is arranged in both the lower head jacket and the barrel jacket, forming a lower head jacket and heat insulation layer 2 and a barrel jacket and heat insulation layer 5.

[0031] The online sampling device 7 is arranged in the reaction concentrator barrel 4 and fixed on the concentrator cover, extending into the periphery of the peripheral single-sided filtering hollow barrel 19, so as to detect the particle size quality of the fluid in the stable zone and the particle size quality of the product blown out from the adhesion layer on the filter surface during pulse back-flushing, and optimize the pulse frequency to ensure a narrower distribution of the product particle size; The filtered liquid outlet pipe 21 is connected in sequence with a filtered liquid outlet pneumatic switch valve 27, a flow meter 26, a filtered liquid outlet regulating valve 25 and a vacuum device 24.

[0032] A backflush valve 22 is preferably provided on the backwash pipeline to control the on / off of backwashing / backflush.

[0033] The above-mentioned concentrator provided by the present invention is exemplarily provided, and the above-mentioned components are controlled by an automatic PLC control cabinet 23. The concentrator can control the material feed amount, the filtrate output, the material output, the temperature, the pressure, the liquid level, the stirring speed, the pulse backwash frequency, and adjust the pH value at any time.

[0034] The above-mentioned circumferential single-sided filtering hollow barrel 19 reaction concentration integrated machine provided by the present invention is suitable for: sodium battery, lithium battery, ferrophosphorus, ferromanganese and other new energy battery precursors.

[0035] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circumferential single-sided filtering hollow barrel reaction concentration integrated machine, characterized in that: include: The peripheral single-sided filtering hollow barrel is arranged near the middle of the reaction concentrator cylinder with a feed pipe and an overflow discharge pipe, and is connected to the reaction concentrator cylinder for suction filtration and / or pressurization to control the stability of the reaction liquid level in the reaction concentrator cylinder and to increase the concentration of the solid content of the reaction liquid.

2. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 1 is characterized in that: The circumferential single-sided filtering hollow barrel has an inner surface and an outer surface, wherein the inner surface is a microporous surface and the outer surface is a non-porous surface, and the inner surface is flush with the inner surface of the reaction concentrator cylinder to prevent uneven flow of the fluid at the connection between the inner surface of the cylinder and the filtering surface.

3. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 1 is characterized in that: The guide channel in the peripheral single-sided filtering hollow barrel is connected with a backwash pipeline and a filtered liquid outlet pipe; The backwash pipeline is connected to the filtered liquid outlet pipeline, and a valve is arranged on the pipeline connecting the two.

4. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 1, characterized in that: Also includes: The stirring device is arranged in the cylinder of the reaction concentrator, and a plurality of stirring blades are arranged on the stirring shaft thereof, so as to make the fluid all turn up in the middle and press down in the circumference or turn up in the circumference by pressing down in the middle.

5. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 4 is characterized in that: The outlet end of the feed pipe extends to the upper side of the end of the lower stirring blade of the stirring device.

6. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 1, characterized in that: The outlet end of the feed pipe is provided with a bottom seal, the bottom seal and / or the end are elliptical holes and / or cross slot holes, and the insertion pipe or the end of the feed pipe is a flat elliptical pipe.

7. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 1, characterized in that: Also includes: The online sampling device is arranged inside the reaction concentrator cylinder and is located around the peripheral single-sided filtering hollow barrel.

8. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 1, characterized in that: The outer wall of the reaction concentrator cylinder is provided with a jacket and / or a heat preservation and insulation layer.

9. The circumferential single-sided filtering hollow barrel reaction concentration integrated machine according to claim 1, characterized in that: The reaction concentrator cylinder is provided with a temperature transmitter, a pressure transmitter, a pH transmitter and a liquid level transmitter.

10. A peripheral single-sided filtering hollow barrel reaction and concentration integrated machine according to any one of claims 1 to 9, characterized in that: The reaction concentrator cylinder is also provided with a vent valve, an air supply valve and a discharge valve.

Images