CN218872193U

CN218872193U - Reaction crystallizer

Info

Publication number: CN218872193U
Application number: CN202222756701.0U
Authority: CN
Inventors: 刘瑜; 饶媛媛; 贾宝成; 汪志全; 徐懋
Original assignee: Hefei Guoxuan Kehong New Energy Technology Co ltd
Current assignee: Hefei Guoxuan Kehong New Energy Technology Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-04-18
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a reaction crystallizer, which comprises a kettle body, wherein the top end of the kettle body is connected with a liquid inlet cylinder, and the bottom end of the kettle body is connected with a liquid outlet cylinder; the center of the kettle body is rotationally connected with a stirrer, and the stirrer comprises a stirring shaft and stirring blades; a distribution disc is movably sleeved on the stirring shaft; the distribution disc comprises a disc body, an annular pipe arranged at the bottom of the disc body and a nozzle device penetrating through the disc body and having an upward spraying direction, wherein the bottom end of the nozzle device is communicated with the annular pipe; the annular pipe is also communicated with a liquid inlet pipe, and the other end of the liquid inlet pipe penetrates through the side wall of the kettle body; and material leaking holes are uniformly distributed on the tray body. The utility model discloses set up two at least distribution discs, a plurality of hourglass material holes of evenly distributed on this distribution disc are favorable to the flow of precipitant material, and the cooperation of rethread sector nozzle atomizes lithium sulfate solution for lithium sulfate solution after the atomizing and precipitant material homogeneous mixing easily realize the crystallization process control.

Description

Reaction crystallizer

Technical Field

The utility model relates to a lithium carbonate production technical field specifically is a reaction crystallizer.

Background

Lithium carbonate is an important raw material for fine chemical production, and is widely used in the industries of batteries, ceramics, glass, aluminum smelting, electronics and pharmacy. The key point of the technology for producing battery-grade lithium carbonate by the carbonization method lies in controlling the reaction crystallization process, obtaining lithium carbonate crystals with good particle size distribution and crystal form structure, and developing a special-effect crystallization reactor, which is the key point for realizing the controllable nucleation and growth in the lithium carbonate crystal growth process so as to obtain good particle size distribution and high integrity of crystal development.

Currently, the existing crystallization reactors have the following disadvantages: in the production process of the sulfuric acid system lithium carbonate, the direct mixture of the precipitator and the lithium sulfate solution is not uniformly distributed, which is not beneficial to the control of the crystallization process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reaction crystallizer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a reaction crystallizer comprises a kettle body, wherein the top end of the kettle body is connected with a liquid inlet cylinder, the bottom end of the kettle body is connected with a liquid outlet cylinder, the center of the kettle body is rotatably connected with a stirrer, and the stirrer comprises a stirring shaft and stirring blades; a distribution disc is movably sleeved on the stirring shaft; the distribution disc comprises a disc body and a plurality of spraying mechanisms which are uniformly distributed on the disc body and spray upwards; and material leaking holes are uniformly distributed on the tray body.

As a further aspect of the present invention: the spraying mechanism comprises an annular pipe arranged at the bottom of the tray body and a nozzle device penetrating through the tray body and having an upward spraying direction, and the bottom end of the nozzle device is communicated with the annular pipe; the annular pipe is also communicated with a liquid inlet pipe, and the other end of the liquid inlet pipe penetrates out of the side wall of the kettle body.

As a further aspect of the present invention: the nozzle device comprises a guide pipe penetrating through the disc body and a fan-shaped spray head connected to the top end of the guide pipe; the bottom end of the guide pipe is communicated with the annular pipe.

As a further aspect of the present invention: the number of the distribution discs is at least two, the periphery of each distribution disc is fixedly connected with the inner wall of the kettle body,

as a further aspect of the present invention: the liquid inlet pipe is connected with a high-pressure pump.

As a further aspect of the present invention: the stirrer also comprises a stirring paddle connected to the stirring shaft below the distribution disc.

As a further aspect of the present invention: the nozzle devices are uniformly distributed on the disc body in an annular shape, and the annular pipe comprises at least three unit rings which are concentrically distributed.

As a further aspect of the present invention: the top end of the stirring shaft is connected with a servo motor for driving the stirring shaft to rotate.

As a further aspect of the present invention: the bottom end of the stirring shaft is connected with a gear linkage mechanism for driving the stirring shaft to rotate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses set up two at least distribution discs, a plurality of hourglass material holes of evenly distributed on this distribution disc are favorable to the flow of precipitant material, and rethread fan-shaped shower nozzle cooperation atomizes lithium sulfate solution for lithium sulfate solution after the atomizing and precipitant material homogeneous mixing easily realize the crystallization process control, but the local ionic content of fully reduced sedimentation process phenomenon on the high side, thereby reduce the crystallization process crystalline phase parcel, and then improve product purity.

The lithium sulfate solution in the liquid inlet pipe is pressurized by the high-pressure pump and then flows into the annular pipe, is atomized and sprayed out through the fan-shaped spray head, and is uniformly scattered by the stirring blades, so that the purpose of fully mixing the lithium sulfate solution and the precipitator material is achieved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the upper end surface of the distribution plate of the present invention;

FIG. 3 is a schematic view of the lower end surface of the middle distribution plate of the present invention;

in the figure: 1-kettle body, 2-liquid inlet cylinder, 3-liquid outlet cylinder, 4-distribution disc, 41-disc body, 411-leakage hole, 42-annular pipe, 43-nozzle device, 431-guide pipe, 432-sector spray head, 5-liquid inlet pipe, 6-servo motor, 7-stirrer, 71-stirring shaft, 72-stirring blade, 73-stirring paddle, 8-high pressure pump, 9-gear linkage mechanism, 91-linkage shaft, 92-linkage gear, 93-driven gear, 94-sleeve and 95-driving belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships usually placed when the products of the present invention are used, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or communication connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, in an embodiment of the present invention, a reaction crystallizer includes a kettle 1, a liquid inlet cylinder 2 connected to a top end of the kettle 1, and a liquid outlet cylinder 3 connected to a bottom end of the kettle 1; the center of the kettle body 1 is rotationally connected with a stirrer 7, and the stirrer 7 comprises a stirring shaft 71 and stirring blades 72; an upper distribution disc 4 and a lower distribution disc 4 are movably sleeved on the stirring shaft 71 (the peripheries of the distribution discs 4 are fixedly connected with the inner wall of the kettle body 1 and do not rotate along with the stirring shaft 71), and a pair of stirring blades 72 is arranged above each distribution disc 2 and on the stirring shaft 71. The distribution disc 4 comprises a disc body 41, an annular pipe 42 arranged at the bottom of the disc body 41, and a plurality of nozzle devices 43 which penetrate through the disc body 41 and are distributed upwards in an annular shape in the spraying direction, wherein the bottom ends of the nozzle devices 43 are communicated with the annular pipe 42; the annular pipe 42 is also communicated with a liquid inlet pipe 5, and the other end of the liquid inlet pipe 5 penetrates through the side wall of the kettle body 1; the tray body 41 is provided with material leaking holes 411. The annular pipe 42 comprises three concentric unit rings which are communicated together by the liquid inlet pipe 5. Further, the nozzle unit 43 includes a pipe 431 penetrating the tray body 41, a fan-shaped nozzle 432 connected to a top end of the pipe 431; the bottom end of the conduit 431 communicates with the annular tube 42.

Further, the liquid inlet pipe 5 is connected with a high-pressure pump 8.

Further, the stirrer 7 further comprises a plurality of pairs of stirring paddles 73 connected to the stirring shaft 71 below the distribution disc 4, the length of the stirring paddles 73 is slightly shorter than the inner radius of the kettle body 1, and the mixed materials at the bottom of the kettle body 1 can be fully stirred.

Further, a gear linkage mechanism 9 is arranged at the bottom of the stirring shaft 71, and the gear linkage mechanism 9 includes a sleeve 94 coaxially sleeved on the periphery of the stirring shaft 71, a driven gear 93 coaxially sleeved on the periphery of the sleeve 94, a linkage gear 92 engaged with the driven gear 93, a linkage shaft 91 penetrating the center of the linkage gear 92, and a driving belt 95 connected to the linkage shaft 91 and the bottom end of the stirring shaft 71. Wherein, the sleeve 94 is connected with the stirring paddle 73 through a rotating bearing.

Further, the top end of the stirring shaft 71 is connected with a servo motor 6, and the servo motor 6 drives the stirring shaft 71, the stirring blade 72 and the driving belt 95 to synchronously rotate.

When the utility model is operated, the servo motor 6 drives the stirring shaft 71, the stirring blades 72 and the driving belt 95 to synchronously rotate, the linkage shaft 91 and the linkage gear 18 synchronously rotate under the driving of the driving belt 95, and the linkage gear 18 drives the driven gear 93, the sleeve 94 and the stirring paddle 73 to reversely rotate; lithium sulfate solution enters from the liquid inlet pipe 5, flows to the annular pipe 42 after being pressurized by the high-pressure pump 8, enters the fan-shaped spray head 432 through the guide pipe 431 to be atomized and sprayed upwards, and the atomized lithium sulfate solution is uniformly scattered by the stirring blades 72; meanwhile, the precipitator material enters the kettle body 1 through the liquid inlet cylinder 2, is mixed with the atomized lithium sulfate liquid, falls along the material leakage holes 411, finally falls into the bottom of the kettle body 1, is fully and uniformly mixed under the stirring action of the stirring paddle 73, and is discharged out of the reactor through the liquid outlet cylinder 3.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A reaction crystallizer comprises a kettle body, wherein the top end of the kettle body is connected with a liquid inlet cylinder, and the bottom end of the kettle body is connected with a liquid outlet cylinder; a distribution disc is movably sleeved on the stirring shaft; the distribution disc comprises a disc body and a plurality of spraying mechanisms which are uniformly distributed on the disc body and spray upwards; and material leaking holes are uniformly distributed on the tray body.

2. The reaction crystallizer of claim 1, wherein the spraying mechanism comprises an annular tube disposed at the bottom of the tray body, and a nozzle device penetrating through the tray body, the bottom end of the nozzle device being communicated with the annular tube; the annular pipe is further communicated with a liquid inlet pipe, and the other end of the liquid inlet pipe penetrates out of the side wall of the kettle body.

3. A reactive crystallizer as claimed in claim 2 wherein said spray nozzles comprise a conduit extending through said tray, a fan spray connected to the top of said conduit; the bottom end of the guide pipe is communicated with the annular pipe.

4. The reaction crystallizer of claim 1, wherein the number of the distribution plates is at least two, and the periphery of the distribution plates is fixedly connected with the inner wall of the kettle body.

5. A reactive crystallizer as claimed in claim 2, wherein a high pressure pump is connected to the feed line.

6. A reactive crystallizer as claimed in claim 1, wherein said agitator further comprises paddles attached to said agitator shaft below said distributor disk.

7. The reactive crystallizer of claim 2, wherein the nozzles are uniformly distributed in a ring shape on the tray body, and the ring-shaped pipe comprises at least three unit rings concentrically distributed.

8. The reaction crystallizer of claim 1, wherein a servo motor is connected to the top end of the stirring shaft for driving the stirring shaft to rotate.

9. The reaction crystallizer of claim 1, wherein a gear linkage mechanism is connected to the bottom end of the stirring shaft for driving the stirring shaft to rotate.