阅读说明：本技术 一种金属锂电解槽 (Metal lithium electrolytic bath ) 是由 李良彬 朱实贵 陈金文 王金荣 邹贵明 王琳 彭爱平 李芳芳 刘永彪 江立荣 于 2019-12-03 设计创作，主要内容包括：本发明公开了一种金属锂电解槽,包括内部含有电解质的槽体和阴阳极组合,阴阳极组合插在槽体内部电解质液体内部,槽体包括外壳、内衬和保温板,外壳与内衬之间填充有保温板,内衬的底部一端安装有泄料口,槽体的两端外延伸位置处设置有集锂装置,槽体的顶端设置有槽盖,且槽盖上安装有加料装置和观测口,观测口位于加料装置的两侧,槽盖上还安装有隔板和防护罩,隔板安装于槽盖下方,防护罩位于隔板正上方,阴阳极组合可拆卸式安装在槽盖上。本发明收集金属锂简易方便,减少氯气泄漏,安全性好；提高阳极利用率和使用寿命,降低更换整个阴阳极组合和电解质的所需时间,提高电解效率和生产效率,降低生产成本。(The invention discloses a metal lithium electrolytic cell, which comprises a cell body and a cathode-anode combination, wherein the cell body internally contains electrolyte, the cathode-anode combination is inserted into electrolyte liquid in the cell body, the cell body comprises a shell, an inner lining and a heat insulation plate, the heat insulation plate is filled between the shell and the inner lining, one end of the bottom of the inner lining is provided with a discharge hole, lithium collecting devices are arranged at positions extending out of two ends of the cell body, the top end of the cell body is provided with a cell cover, a feeding device and observation holes are arranged on the cell cover, the observation holes are positioned at two sides of the feeding device, the cell cover is also provided with a partition plate and a protective cover, the partition plate is arranged below the cell cover, the protective cover is. The invention is simple and convenient for collecting the metal lithium, reduces the chlorine leakage and has good safety; the utilization rate of the anode is improved, the service life of the anode is prolonged, the time for replacing the whole cathode-anode combination and the electrolyte is shortened, the electrolysis efficiency and the production efficiency are improved, and the production cost is reduced.)

1. The metal lithium electrolytic cell is characterized by comprising a cell body (1) and a cathode-anode combination (15), wherein the cell body (1) internally contains electrolyte, the cathode-anode combination (15) is inserted into electrolyte liquid inside the cell body (1), the cell body (1) comprises a shell (2), an inner lining (3) and an insulation board (4), the insulation board (4) is filled between the shell (2) and the inner lining (3), a discharge hole (5) is installed at one end of the bottom of the inner lining (3), lithium collecting devices (6) are arranged at positions extending outwards at two ends of the cell body (1), a cell cover (7) is arranged at the top end of the cell body (1), a feeding device (8) and an observation hole (9) are installed on the cell cover (7), the observation holes (9) are located at two sides of the feeding device (8), a partition board (13) and a protective cover (14) are further installed on the cell cover (7), baffle (13) install in capping (7) below, protection casing (14) are located baffle (13) directly over, the detachable installation on capping (7) of negative and positive pole combination (15), negative and positive pole combination (15) are including positive pole (10), negative pole circle (11) and negative pole wall (12), negative pole circle (11) are hollow circular cylinder, and are a plurality of negative pole circle (11) fixed connection becomes whole, be provided with positive pole (10) in negative pole circle (11), just positive pole (10) do not contact negative pole circle (11) inner wall, negative pole wall (12) fixed mounting is on negative pole circle (11) outer wall, just negative pole wall (12) are parallel state with corresponding positive pole (10), positive pole (10) and negative pole wall (12) pass capping (7) and connect outside conductor wire.

2. The metal lithium electrolytic cell of claim 1, wherein: inside lining (3) bottom is the tilting structure, drain hole (5) set up in the lower one end in inside lining (3) bottom, just drain hole (5) pass the cell wall of cell body (1) and lead to the outside.

3. The metal lithium electrolytic cell of claim 1, wherein: the tank body (1) is in an inverted convex shape, and two sides of the upper part and the lower part of the tank body (1) respectively extend out by 30-40 cm.

4. The metal lithium electrolytic cell of claim 1, wherein: the lithium collecting device (6) comprises a lithium collecting barrel (61), a guide pipe (62) and a valve (63), the lithium collecting barrel (61) is arranged at the outer extending position of the tank body (1), the guide pipe (62) is arranged on the lithium collecting barrel (61), and the guide pipe (62) penetrates through the position, at which the wall of the tank body (1) is communicated with the outside, of the tank body and is provided with the valve (63).

5. The metal lithium electrolytic cell of claim 1, wherein: the feeding device (8) comprises a conveying pipeline (81), a control valve (82) and a meter (83), wherein the conveying pipeline (81) is sequentially provided with the control valve (82) and the meter (83) from outside to inside.

Technical Field

The invention relates to the technical field of electrolytic cells, in particular to a metal lithium electrolytic cell.

Background

With the increasing development of national economy and the vigorous support of new energy policy by the nation, metallic lithium and lithium series products occupy more and more important positions in the development and use of new energy, and lithium chloride molten salt electrolysis is the only method capable of industrially preparing metallic lithium at present.

However, the prior art method has the following problems: firstly, the lithium liquid is fished out manually by opening a plurality of points on the tank cover in the process, and the defects that the labor intensity is particularly high in high-temperature seasons, chlorine leakage exists during the cover opening operation, the workshop environment is influenced, and potential safety hazards exist; secondly, carbon powder generated by the graphite anode due to electrolysis is deposited in electrolyte, so that the electrolysis efficiency is influenced, and the graphite anode can be completely cleaned only by disassembling the electrolytic cell, so that the labor intensity is increased, and the production efficiency is reduced; and the cathode combination is passivated due to long-time electrolysis, so that the electrolysis efficiency is reduced, and the cathode wall is inserted laterally, so that the electrolytic bath needs to be completely disassembled for replacing the cathode combination, the labor intensity is increased, and the production efficiency is reduced. To this end, we propose a metallic lithium electrolytic cell.

Disclosure of Invention

The invention is completed for solving the defects in the prior art, and aims to provide a metal lithium electrolytic cell which can concentrate metal lithium, improve the collection efficiency of the metal lithium, reduce chlorine leakage, automatically feed materials, conveniently and quickly clean deposited carbon powder and replace cathode combinations without completely disassembling the cell body, reduce labor intensity and improve production efficiency.

In order to achieve the purpose, the invention provides the following technical scheme: a metal lithium electrolytic cell comprises a cell body and a cathode-anode combination, wherein the cell body internally contains electrolyte, the cathode-anode combination is inserted into electrolyte liquid in the cell body, the cell body comprises a shell, an inner lining and a heat insulation plate, the heat insulation plate is filled between the shell and the inner lining, a discharge hole is installed at one end of the bottom of the inner lining, lithium collecting devices are arranged at positions extending out of two ends of the cell body, a cell cover is arranged at the top end of the cell body, a feeding device and an observation hole are installed on the cell cover, the observation hole is positioned at two sides of the feeding device, a partition plate and a protective cover are also installed on the cell cover, the partition plate is installed below the cell cover, the protective cover is positioned right above the partition plate, the cathode-anode combination is detachably installed on the cell cover, the cathode-anode combination comprises an anode, a cathode ring and, the cathode rings are fixedly connected into a whole, anodes are arranged in the cathode rings and do not contact with the inner walls of the cathode rings, the cathode walls are fixedly arranged on the outer walls of the cathode rings and are parallel to the corresponding anodes, and the anodes and the cathode walls penetrate through the tank cover to be connected with an external conducting wire.

Preferably, the inside lining bottom is the tilting structure, the discharge opening sets up in the lower one end of substrate portion, just the discharge opening passes the cell wall of cell body and accesss to the outside.

Preferably, the groove body is in an inverted convex shape, and two sides of the upper part and the lower part of the groove body respectively extend for 30-40 cm.

Preferably, the lithium collecting device comprises a lithium collecting barrel, a flow guide pipe and a valve, the lithium collecting barrel is arranged at the outer extending position of the groove body, the flow guide pipe is arranged on the lithium collecting barrel, and the valve is arranged at the position where the flow guide pipe penetrates through the groove wall of the groove body and leads to the outside.

Preferably, the feeding device comprises a conveying pipeline, a control valve and a meter, wherein the control valve and the meter are sequentially arranged on the conveying pipeline from outside to inside.

Compared with the prior art, the invention has the beneficial effects that: the collection of the metal lithium is simple and convenient, the chlorine leakage is reduced, and the safety is good; the utilization rate of the anode is improved, the service life of the anode is prolonged, the time for replacing the whole cathode-anode combination and the electrolyte is shortened, the electrolysis efficiency and the production efficiency are improved, and the production cost is reduced.

Drawings

FIG. 1 is a front view of a lithium metal electrolytic cell of the present invention;

FIG. 2 is a side view of a lithium metal electrolytic cell of the present invention;

fig. 3 is a top view of a lithium metal electrolytic cell of the present invention.

In the figure: 1. a trough body; 2. a housing; 3. a liner; 4. a thermal insulation board; 5. a discharge port; 6. a lithium collecting device; 61. a lithium collecting barrel; 62. a flow guide pipe; 63. a valve; 7. a slot cover; 8. a feeding device; 81. a delivery conduit; 82. a control valve; 83. a meter; 9. an observation port; 10. an anode; 11. a cathode ring; 12. a cathode wall; 13. a partition plate; 14. a protective cover; 15. and combining the cathode and the anode.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

the metal lithium electrolytic cell of the embodiment comprises a cell body 1 and a cathode-anode combination 15:

the tank body 1 is of an inverted convex shape, two sides of the upper part and the lower part respectively extend for 30-40cm, the tank body comprises a shell 2, an inner lining 3 and a heat insulation plate 4, the heat insulation plate 4 is preferably made of asbestos and fireproof heat insulation bricks, and electrolyte is filled in the tank body 1. The insulation board 4 is filled between the shell 2 and the lining 3, so that the heat loss of the electrolytic cell can be reduced, and the energy consumption is reduced. The bottom of the lining 3 is of an inclined structure, the discharge port 5 is arranged at the lower end of the bottom of the lining 3, the discharge port 5 penetrates through the groove wall of the groove body 1 to be led to the outside, and the electrolyte with excessive deposited carbon powder can be cleaned and replaced.

The lithium collecting device 6 is arranged at the outer extending part of the tank body 1, the lithium collecting device 6 comprises a lithium collecting barrel 61, a guide pipe 62 and a valve 63, the lithium collecting barrel 61 is arranged at the outer extending position of the tank body 1 and is 2-4cm higher than the electrolyte liquid level, the guide pipe 62 is arranged on the lithium collecting barrel 61, the guide pipe 62 penetrates through the tank wall of the tank body 1 and is arranged at the position leading to the outside, the valve 63 is arranged, metal lithium electrolyzed can be automatically collected, and the metal lithium can flow out of the tank body 1 through the guide pipe 62 by opening the valve 63 to be collected outside the tank body.

The capping 7 is installed at the top of the tank body 1, the charging device 8 and the observation port 9 are installed on the capping 7, the charging device 8 comprises a conveying pipeline 81, a control valve 82 and a meter 83, the control valve 82 and the meter 83 are sequentially arranged on the conveying pipeline 81 from outside to inside, automatic quantitative charging of the metal lithium electrolytic tank can be achieved, the two observation ports 9 are located on two sides of the charging device 8, and the internal condition of the tank body 1 can be observed.

Still install baffle 13 and protection casing 14 on the capping 7, baffle 13 is installed in capping 7 below, is located the outer extension of cell body 1 and partially the inner boundary department, and it is 2-4cm to hang down to from the electrolyte liquid level, can reduce chlorine and leak, improves the chlorine concentration in the follow-up tail gas treatment process, reduction in production cost. The protective cover 14 is arranged on the tank cover 7 and is positioned right above the partition plate 13, so that the cathode and anode combination 15 can be completely covered, the passivation phenomenon of the cathode and anode combination 15 caused by long-time electrolysis is avoided, and the electrolysis efficiency is improved.

The cathode-anode combination 15 comprises an anode 10, a cathode ring 11 and a cathode wall 12, the cathode-anode combination 15 is inserted in the electrolyte liquid inside the tank body 1, the cathode and anode combination 15 is detachably arranged on the tank cover 7, and is fixedly arranged in the tank body 1 by the tank cover 7, and the anode 10 and the cathode wall 12 pass through the tank cover 7 to be connected with an external conductive wire, the cathode ring 11 is hollow cylindrical and is called a cathode group by a plurality of fixed connection together, the anode 10 is arranged in the cathode 11 and does not contact the inner wall of the cathode ring 11 to prevent short circuit, and the cathode ring 11 is higher than that of the traditional electrolytic bath and is only 8-10cm lower than the electrolyte liquid surface, can completely wrap the anode 10, the utilization rate of the anode 10 can be improved, the production cost can be reduced, and the cathode wall 12 is fixedly arranged on the outer wall of the cathode ring 11 and is parallel to the anode 10.

The working principle is as follows: electrifying the cathode and anode combination 15, electrolyzing the electrolyte, generating metal lithium and chlorine, wherein the metal lithium can float on the surface of the electrolyte due to the density of the metal lithium being less than the density of the electrolyte, and extending the part to the outside of the cell body 1 along with the flowing of the electrolyte, thereby automatically collecting the metal lithium when the metal lithium is gathered to be thicker than the height of the lithium collecting device 6, adding the electrolyte into the cell body 1 through the feeding device 8 after electrolyzing for a period of time, opening the discharge port 5 to exhaust the electrolyte when depositing too much carbon powder in the electrolyte, leading the supernatant into the cell body 1 again for reutilization after precipitating the electrolyte, and the cathode and anode combination 15 can be integrally replaced, thereby saving the production time and improving the production efficiency.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.