CN209221515U - A kind of lithium chloride evaporation concentration device - Google Patents

A kind of lithium chloride evaporation concentration device Download PDF

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Publication number
CN209221515U
CN209221515U CN201822013510.9U CN201822013510U CN209221515U CN 209221515 U CN209221515 U CN 209221515U CN 201822013510 U CN201822013510 U CN 201822013510U CN 209221515 U CN209221515 U CN 209221515U
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falling film
film evaporator
lithium chloride
falling
steam
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CN201822013510.9U
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刘奇
鲍燕娟
周齐
张小江
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Shenzhen Sunevap Tech Co Ltd
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Shenzhen Sunevap Tech Co Ltd
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Abstract

The utility model discloses a kind of lithium chloride evaporation concentration devices, it includes sequentially connected first falling film evaporator, the second falling film evaporator, third falling film evaporator, and first falling film evaporator, the second falling film evaporator, third falling film evaporator are connected to a second separator.Lithium chloride solution is after the first falling film evaporator, the second falling film evaporator, the processing of third falling film evaporator evaporation and concentration, increasing temperature and pressure and flash concentration, obtain the lithium chloride solution and secondary steam of required concentration, secondary steam can enter the further gas-liquid separation of second separator, and by obtained steam again reuse to falling film evaporators at different levels, energy consumption is reduced, steam energy is taken full advantage of.The apparatus structure is simple, short using its lithium chloride evaporating and concentrating process process, and processing difficulty is small, and obtained lithium chloride concentrate purity is high, high income, treatment process is pollution-free, energy-saving and emission-reduction and efficiently.

Description

A kind of lithium chloride evaporation concentration device
Technical field
The utility model belongs to chemical equipment technical field, is related to a kind of evaporation concentration device, relates in particular to one kind Lithium chloride evaporation concentration device.
Background technique
In recent years, the lithium and lithium compound of high-purity have been widely used in multiple fields, as lithium battery, lithium alloys, Aerospace etc., especially with the rapid development of lithium ion battery industry, the demand of high-purity lithium compound is significantly increased.? In numerous lithium compounds, lithium chloride is a kind of important compound, can be used for filed of air conditioning, it is also possible to make scaling powder, do Drying prescription, for making fireworks, dry cell etc., or the raw material of production lithium metal.
Lithium is a kind of important strategic resources substance, is the indispensable important source material of modern high technology product.China The lithium resource gross reserves verified occupies second place of the world, but lithium yield only accounts for 5% or so of global total output, be lithium product it is net into Mouth state.
Lithium chloride is a kind of more rare resource at present, is generally handed over by lithium carbonate or lithium hydroxide chloridising, ion The preparation of the techniques such as absorption method is changed, weighing was produced, in subsequent progress plate-frame filtering and the evaporation and concentration of cleaning, then it is subsequent through sinker etc. Finished product is operated, in conventional chlorinating lithium concentration process, multi-effect evaporating device is mostly used to carry out concentration, this device exists The problem that process flow is long, complicated for operation, cost of investment is high, energy consumption is high, so as to cause concentration lithium chloride high production cost.
Utility model content
For this purpose, the utility model exactly will solve above-mentioned technical problem, to propose a kind of high income, purity is high, the energy Consume low with processing difficulty, low-cost lithium chloride evaporation concentration device.
In order to solve the above technical problems, the technical solution of the utility model are as follows:
The utility model provides a kind of lithium chloride evaporation concentration device comprising sequentially connected first falling film evaporator, Second falling film evaporator, third falling film evaporator, first falling film evaporator, the second falling film evaporator, third falling film evaporation Device is connected to a second separator.
Preferably, first falling film evaporator, the second falling film evaporator, third falling film evaporator are also connected with a steaming Vapour compressor, the vapour compression machine are connected to the second separator.
Preferably, described device further includes preheating unit, the preheating unit includes passing through the sequentially connected steaming of pipeline Distilled water preheater, fixed gas preheater and fresh vapor preheater, the fresh vapor preheater are connected to first falling film evaporation Device.
Preferably, described device further includes a vacuum pump, the vacuum pump is connected with a vacuum pump plate heat exchanger, institute It states vacuum pump plate heat exchanger and is connected to the fixed gas preheater.
Preferably, first falling film evaporator, the second falling film evaporator, third falling film evaporator all have steam and go out Mouth and steam inlet, the steam (vapor) outlet are connected to the second separator, and the steam inlet is connected to the both vapor compression Machine.
Preferably, the fresh vapor preheater is connected with a distilled water stocking mechanism, the vapour compression machine is connected with One hydrops stocking mechanism, the distilled water stocking mechanism and the hydrops stocking mechanism pass through piping connection.
Preferably, the first transfering material pump is provided between first falling film evaporator and the second falling film evaporator, it is described The second transfering material pump is provided between second falling film evaporator and third falling film evaporator.
Preferably, first falling film evaporator, the second falling film evaporator, third falling film evaporator are connected separately with One falling liquid film circulating pump, the second falling liquid film circulating pump and third falling liquid film circulating pump.
Preferably, the distilled water stocking mechanism is connected with distilled water pump, the hydrops stocking mechanism is connected with hydrops Pump.
The above-mentioned technical proposal of the utility model has the advantage that compared with prior art
(1) lithium chloride evaporation concentration device described in the utility model comprising sequentially connected first falling film evaporator, Second falling film evaporator, third falling film evaporator, first falling film evaporator, the second falling film evaporator, third falling film evaporation Device is connected to a second separator.Lithium chloride solution is through the first falling film evaporator, the second falling film evaporator, third falling film evaporator After evaporation and concentration processing, increasing temperature and pressure and flash concentration obtain the lithium chloride solution and secondary steam of required concentration, secondary steam The further gas-liquid separation of second separator can be entered, and reuse is reduced to falling film evaporators at different levels again by obtained steam Energy consumption takes full advantage of steam energy.The apparatus structure is simple, short using its lithium chloride evaporating and concentrating process process, processing Difficulty is small, and obtained lithium chloride concentrate purity is high, high income, treatment process is pollution-free, energy-saving and emission-reduction and efficiently.
(2) lithium chloride evaporation concentration device described in the utility model, first falling film evaporator, the second falling film evaporation Device, third falling film evaporator are also connected with a vapour compression machine, and the vapour compression machine is connected to the second separator.Falling liquid film Evaporator is concentrated by evaporation the secondary steam formed after lithium chloride solution and is compressed by vapour compression machine, improves secondary steam Temperature and pressure after, be discharged into falling film evaporators at different levels again, secondary steam made to have obtained secondary use, reduced and be produced into This.
Detailed description of the invention
In order to be more likely to be clearly understood the content of the utility model, below according to the specific implementation of the utility model Example and in conjunction with attached drawing, the utility model is described in further detail, wherein
Fig. 1 is the structural schematic diagram of lithium chloride evaporation concentration device described in the utility model embodiment.
Appended drawing reference indicates in figure are as follows: the first falling film evaporator of 1-;The second falling film evaporator of 2-;3- third falling film evaporation Device;4- second separator;5- vapour compression machine;6- distills water preheater;7- fixed gas preheater;The fresh vapor preheater of 8-;9- Distilled water stocking mechanism;10- hydrops stocking mechanism;11- vacuum pump plate heat exchanger;12- vacuum pump;13- stoste stocking mechanism; 14- raw material pump;15- distilled water pump;The first transfering material pump of 16-;The second transfering material pump of 17-;18- the first falling liquid film circulating pump;19- second drops Film circulating pump;20- third falling liquid film circulating pump;21- discharging pump;22- hydrops pump.
The utility model can be implemented with many different forms, should not be construed as limited to embodiment set forth herein, On the contrary, providing these embodiments, so that the disclosure is thorough and complete, and the design of the utility model is fully conveyed to this Field technical staff, the utility model will be defined by the claims.In the accompanying drawings, for clarity, each device can be exaggerated Size and relative size.Term " first ", " second " in the utility model specification and claims and attached drawing etc. are It is used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the data used in this way It is interchangeable under appropriate circumstances.In addition, term " includes ", " having " and their any deformation, it is intended that covering is not Exclusive includes.
Specific embodiment
Embodiment
The present embodiment provides a kind of lithium chloride evaporation concentration device, described device is for being concentrated by evaporation the preparation of lithium chloride stoste Lithium chloride concentrate.
As shown in Figure 1, the lithium chloride evaporation concentration device includes that sequentially connected first falling film evaporator 1, second drops Film evaporator 2 and third falling film evaporator 3, first falling film evaporator 1, the second falling film evaporator 2 and third falling film evaporation Device 3 is all connected to a second separator 4, specifically, first falling film evaporator 1, the second falling film evaporator 2 and third falling liquid film Evaporator 3 is respectively provided with steam inlet and steam (vapor) outlet, the steam (vapor) outlet of each falling film evaporator with the second separator 4 Air inlet connection, the second separator 4 are gas-liquid separator.
First falling film evaporator 1, the second falling film evaporator 2, third falling film evaporator 3 and second separator 4 connect It is connected to a MVR compressor, the MVR compressor is vapour compression machine 5, and specifically, the vapour compression machine is centralized vapor Compressor, first falling film evaporator 1, the second falling film evaporator 2, the steam inlet of third falling film evaporator 3 and the steaming The escape pipe of vapour compressor 5 is connected to, and the gas outlet of the second separator 4 is connected to the air inlet of the vapour compression machine 5.Through The lithium chloride solution increasing temperature and pressure that first falling film evaporator 1, the second falling film evaporator 2 and third falling film evaporator 3 are concentrated by evaporation Secondary steam and lithium chloride concentrate are generated afterwards, and secondary steam drains into second separator by the steam (vapor) outlet of falling film evaporator and carries out Gas-liquid separation, the steam after gas-liquid separation, which enters in vapour compression machine 5, to be compressed, and is discharged into again after improving temperature and pressure In falling film evaporators at different levels, as heat source.In the present embodiment, the vapor (steam) temperature after second separator gas-liquid separation is 85 DEG C, pressure 57.8KPa, through vapour compression machine 5 compression after, boost to 103 DEG C, 113KPa.
Further, described device further includes preheating unit, as shown, the preheating unit includes passing through pipeline sequentially Distillation water preheater 6, fixed gas preheater 7 and the fresh vapor preheater 8 of connection, the fresh vapor preheater 8 are connected to described First falling film evaporator 1, the fresh vapor preheater 8 are also connected with a distilled water stocking mechanism 9 for stored distilled water, institute It states vapour compression machine 5 and is connected with one for storing the hydrops stocking mechanism 10 of hydrops, the distilled water stocking mechanism 9 and the product Liquid stocking mechanism 10 is respectively to distill water store tank by piping connection, the distilled water stocking mechanism 9, hydrops stocking mechanism 10 With distillation water store tank.
The fixed gas preheater 7 is connected to a vacuum pump plate heat exchanger 11, and the vacuum pump plate heat exchanger 11 connects Be connected to a vacuum pump 12, the vacuum pump plate heat exchanger 11 by fixed gas preheater 7 be connected to the first falling film evaporator 1, Second falling film evaporator 2 and third falling film evaporator 3.
Described device further includes stoste stocking mechanism 13, and the stoste stocking mechanism 13 is original fluid container, for storing chlorination Lithium stoste, the stoste stocking mechanism 13 are connect with the distillation water preheater 6 by raw material pump 14, and stoste storage is stored in Lithium chloride stoste in mechanism 13 sequentially enters distillation water preheater 6, fixed gas preheater 7 and fresh under the action of raw material pump 14 Vapor preheater 8, respectively with the distilled water in distillation water preheater 6, fixed gas and fresh steam preheating in fixed gas preheater 7 Fresh steam in device 8 exchanges heat.Distilled water stocking mechanism 9 is connected with distilled water pump 15, under the action of distilled water pump 15, steams Distilled water enter distillation water preheater 6, while distilled water stocking mechanism 9 also by pipeline sequentially with fixed gas preheater 7 and fresh steaming Vapour preheater 8 connects.
The first transfering material pump 16, second drop are provided between first falling film evaporator 1 and the second falling film evaporator 2 The second transfering material pump 17, first falling film evaporator 1, second are provided between film evaporator 2 and third falling film evaporator 3 Falling film evaporator 2, third falling film evaporator 3 are connected separately with the first falling liquid film circulating pump 18, the second falling liquid film circulating pump 19 and third Falling liquid film circulating pump 20.Through fresh vapor preheater 8 preheating after lithium chloride solution enter the first falling film evaporator 1 vaporization chamber in into Row falling film evaporation, the first falling film evaporator 1, the second falling film evaporator 2, third falling film evaporator 3 also have separation chamber, described point It is connect by steam (vapor) outlet with second separator 4 from room.The third falling film evaporator 3 is connected with discharging pump 21, the hydrops Stocking mechanism 10 is connected with hydrops pump 22, and the hydrops pump 22 is set to the hydrops stocking mechanism 10 and distilled water stocking mechanism Between 9.
The workflow of lithium chloride evaporation concentration device described in the present embodiment are as follows:
S1, preheating, the lithium chloride solution being stored in original fluid container successively squeeze into distillation water preheater 6, no by raw material pump 14 Solidifying air preheater 7 and first vapor preheater 8, are warming up to evaporating temperature, the distilled water by pre-heating system for lithium chloride solution It is the distilled water in distillation water pot through evaporating obtained secondary steam condensed water.First falling film evaporator 1, the second falling film evaporator 2, incondensible gas in the vaporization chamber shell side of third falling film evaporator 3, need to periodically be discharged, and when discharge can carry a small amount of two secretly Secondary steam.The fresh steam is pressure 0.1MpaG, the saturated vapor that 120 DEG C of temperature.
S2, evaporation and concentration are preheated to the lithium chloride solution of evaporating temperature, into 1 separation chamber of the first falling film evaporator, then After the vaporization chamber for entering the first falling film evaporator 1 through the effect of the first falling liquid film circulating pump 18 carries out falling film evaporation, the is fallen into again Gas-liquid separation is carried out in the separation chamber of one falling film evaporator 1, separation of the concentrate after gas-liquid separation from the first falling film evaporator 1 The first transfering material pump of room bottom 16 enters the separation chamber of the second falling film evaporator 2, then passes through the work of the second falling liquid film circulating pump 19 With sequentially entering vaporization chamber and the separation chamber of the second falling film evaporator 2, the concentrate after gas-liquid separation is from the second falling film evaporator 2 the second transfering material pumps of separation chamber bottom 17 enter 3 separation chamber of third falling film evaporator, then pass through third falling liquid film circulating pump 20 Effect, sequentially enters vaporization chamber and the separation chamber of third falling film evaporator 3, and so circulation concentration constantly mentions chlorination lithium concentration Up to required concentration, then by 21 carrying device of discharging pump.
S3, MVR compression, the secondary steam separated in the separation chamber of falling film evaporators at different levels are introduced into second separator 4, after being further separated out the liquid carried secretly in secondary steam by baffling effect, clean secondary steam enters both vapor compression Compressed in machine 5, improve be discharged into after the temperature and pressure of secondary steam the first falling film evaporator 1, the second falling film evaporator 2, In the vaporization chamber of third falling film evaporator 3, as heat source, secondary steam is made to obtain secondary use.
The shell side of S4, vacuum control, 1 vaporization chamber of the first falling film evaporator are connected to fixed gas preheater 7 by pipeline, first After fixed gas and stoste heat exchange, is entering vacuum pump plate heat exchanger 11, further fixed gas temperature is reduced, is then connected To vacuum pump 12, the first falling film evaporator 1, the second falling film evaporator 2, third falling film evaporator 3 are controlled by vacuum pump 12 Vaporization chamber shell side pressure, and then the evaporating pressure of regulating device.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims (9)

1. a kind of lithium chloride evaporation concentration device, which is characterized in that including sequentially connected first falling film evaporator, the second falling liquid film Evaporator, third falling film evaporator, first falling film evaporator, the second falling film evaporator, third falling film evaporator are connected to One second separator.
2. lithium chloride evaporation concentration device according to claim 1, which is characterized in that first falling film evaporator, Two falling film evaporators, third falling film evaporator are also connected with a vapour compression machine, and the vapour compression machine is connected to described secondary Separator.
3. lithium chloride evaporation concentration device according to claim 2, which is characterized in that described device further includes that preheating is single Member, the preheating unit include passing through the sequentially connected distillation water preheater of pipeline, fixed gas preheater and fresh vapor preheater, The fresh vapor preheater is connected to first falling film evaporator.
4. lithium chloride evaporation concentration device according to claim 3, which is characterized in that described device further includes a vacuum Pump, the vacuum pump are connected with a vacuum pump plate heat exchanger, and it is pre- that the vacuum pump plate heat exchanger is connected to the fixed gas Hot device.
5. lithium chloride evaporation concentration device according to claim 4, which is characterized in that first falling film evaporator, Two falling film evaporators, third falling film evaporator all have steam (vapor) outlet and steam inlet, and the steam (vapor) outlet is connected to described two Secondary separator, the steam inlet are connected to the vapour compression machine.
6. lithium chloride evaporation concentration device according to claim 5, which is characterized in that the fresh vapor preheater is connected with One distilled water stocking mechanism, the vapour compression machine are connected with a hydrops stocking mechanism, the distilled water stocking mechanism with it is described Hydrops stocking mechanism passes through piping connection.
7. lithium chloride evaporation concentration device according to claim 6, which is characterized in that first falling film evaporator and It is provided with the first transfering material pump between two falling film evaporators, is provided between second falling film evaporator and third falling film evaporator Second transfering material pump.
8. lithium chloride evaporation concentration device according to claim 7, which is characterized in that first falling film evaporator, Two falling film evaporators, third falling film evaporator are connected separately with the first falling liquid film circulating pump, the second falling liquid film circulating pump and third falling liquid film Circulating pump.
9. lithium chloride evaporation concentration device according to claim 8, which is characterized in that the distilled water stocking mechanism connection There is distilled water pump, the hydrops stocking mechanism is connected with hydrops pump.
CN201822013510.9U 2018-12-03 2018-12-03 A kind of lithium chloride evaporation concentration device Active CN209221515U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110613951A (en) * 2019-10-08 2019-12-27 深圳市瑞升华科技股份有限公司 Evaporation concentration flash evaporation cooling crystallization equipment and process thereof
CN110975312A (en) * 2019-12-02 2020-04-10 长沙中联重科环境产业有限公司 MVR evaporation device and evaporation method for efficient energy recovery
CN111228836A (en) * 2020-01-14 2020-06-05 深圳市瑞升华科技股份有限公司 Inulin extracting solution concentrating process and device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110613951A (en) * 2019-10-08 2019-12-27 深圳市瑞升华科技股份有限公司 Evaporation concentration flash evaporation cooling crystallization equipment and process thereof
CN110975312A (en) * 2019-12-02 2020-04-10 长沙中联重科环境产业有限公司 MVR evaporation device and evaporation method for efficient energy recovery
CN111228836A (en) * 2020-01-14 2020-06-05 深圳市瑞升华科技股份有限公司 Inulin extracting solution concentrating process and device

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