CN216877924U

CN216877924U - Lithium hydroxide mirabilite crystallization apparatus for producing with refrigerating system coupling

Info

Publication number: CN216877924U
Application number: CN202220134606.4U
Authority: CN
Inventors: 吴玉蕾; 张彦博; 邵效云; 郝万鹏; 郭峰; 李俊茹
Original assignee: Hebei Yunrui Chemical Equipment Co ltd
Current assignee: Hebei Yunrui Chemical Equipment Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-05
Anticipated expiration: 2032-01-19

Abstract

The utility model relates to a lithium hydroxide mirabilite crystallization production device coupled with a refrigeration system, which comprises a crystallizer, wherein a first pipeline is fixedly connected to the outside of the crystallizer, an external cooler is fixedly connected to the outside of the first pipeline, a second pipeline is fixedly connected to the outside of the external cooler, the outside of the external cooler is fixedly connected with a connecting pipeline, a circulating pump is fixedly connected to the outside of the crystallizer, and a third pipeline is fixedly connected to the outside of the circulating pump. This lithium hydrate glauber's salt crystallization apparatus for producing with refrigerating system coupling utilizes the evaporator of the outer cooler of lithium hydrate glauber's salt crystallization system as refrigerating machine system, adopts the refrigerant directly to carry out indirect heat transfer with the material, becomes the gaseous phase after the heat is absorbed to the refrigerant among the heat transfer process, and this kind of heat transfer mode heat exchange efficiency is high, can reduce outer cooler heat transfer area, and a refrigerator has saved an evaporator in addition, has reduced equipment investment cost, has simplified the heat transfer flow, has reduced the running load of refrigerator.

Description

Lithium hydroxide mirabilite crystallization apparatus for producing with refrigerating system coupling

Technical Field

The utility model relates to the technical field of mirabilite crystallization production, in particular to a lithium hydroxide mirabilite crystallization production device coupled with a refrigeration system.

Background

The mother liquor after the transformation of the lithium hydroxide mainly contains the lithium hydroxide and the sodium sulfate and contains a small amount of sodium hydroxide alkali liquor, the sodium sulfate needs to be separated from the solution in the process, and sodium sulfate decahydrate solid, namely mirabilite, is separated out by adopting a cooling crystallization process.

The cooling mode of the existing lithium hydroxide mirabilite freezing crystallization system is mostly to adopt the secondary refrigerant and the material to carry out indirect heat exchange between liquid and liquid in an external cooler, the used secondary refrigerant returns to an evaporator of a refrigerating machine system after absorbing heat in the external cooler, the heat exchange and cooling are carried out in the evaporator of the refrigerating machine and the refrigerant to release heat and then the heat returns to the crystallization system for recycling, but because the heat exchange between liquid and liquid is carried out between the secondary refrigerant and the materials, the secondary refrigerant does not generate phase change in the heat exchange process, the heat exchange coefficient is low, the heat exchange efficiency is poor, in addition, in the process, after the secondary refrigerant exchanges heat with the refrigerant, the secondary refrigerant exchanges heat with the materials again, the heat exchange process is complex, the heat exchange temperature difference is wasted, the refrigerant needs lower temperature, and the operation load of the refrigerating machine is increased, so that the lithium hydroxide mirabilite crystallization production device coupled with the refrigerating system is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a glauberite crystal production device coupled with a refrigerating system, which is characterized in that an external cooler of the glauberite crystal system is used as an evaporator of the refrigerating system, a refrigerant is adopted to directly and indirectly exchange heat with materials, the refrigerant is changed into gas phase after absorbing heat in the heat exchange process, the heat exchange mode has high heat exchange efficiency and can reduce the heat exchange area of the external cooler, in addition, the refrigerating machine omits one evaporator, the equipment investment cost is reduced, the refrigerant and the materials are adopted to exchange heat, the heat exchange process is simplified, the temperature of the refrigerant can be properly improved, the operation load of the refrigerating machine is reduced, the energy consumption is saved, and the like, the problems of low heat exchange coefficient, poor heat exchange efficiency, complex heat exchange process and the like of the traditional glauberite crystal production device and the indirect heat exchange mode of the secondary refrigerant and the materials adopted in the cooling process are solved, the heat exchange temperature difference is wasted, so that the equipment investment is high and the energy consumption of the system is high.

In order to achieve the purpose, the utility model provides the following technical scheme: a lithium hydroxide mirabilite crystallization production device coupled with a refrigeration system comprises a crystallizer, wherein a first pipeline is fixedly connected to the outside of the crystallizer, an external cooler is fixedly connected to the outside of the first pipeline, a second pipeline is fixedly connected to the outside of the external cooler, a connecting pipeline is fixedly connected to the outside of the external cooler, a circulating pump is fixedly connected to the outside of the crystallizer, a third pipeline is fixedly connected to the outside of the circulating pump, and a circulating structure is fixedly connected to the outside of the connecting pipeline;

the circulating structure comprises a separator, an external fixedly connected with fourth pipeline of the separator, an external fixedly connected with demister of the fourth pipeline, an external fixedly connected with fifth pipeline of the demister, an external fixedly connected with compressor of the fifth pipeline, an external fixedly connected with sixth pipeline of the separator, an external fixedly connected with refrigerator shell of the sixth pipeline, an internal fixedly connected with condenser of the refrigerator shell, an external fixedly connected with seventh pipeline of the condenser, an external fixedly connected with water inlet pipe of the condenser, and an external fixedly connected with water outlet pipe of the condenser.

Further, the top of crystallizer and the left bottom fixed connection of first pipeline, and the left bottom of first pipeline extends to inside the crystallizer, the bottom on first pipeline right side and the top fixed connection of external cooler, the right side that the external cooler leaned on the top and the left side fixed connection of second pipeline.

Further, the outer cooler is close to the right side of bottom and the left side fixed connection of connecting tube, the bottom of outer cooler and the top fixed connection on third pipeline right side, the left side of third pipeline and the right side fixed connection of circulating pump.

Further, the bottom of circulating pump and the top fixed connection of crystallizer, and the bottom of circulating pump extends to the inside of crystallizer, the top of connecting tube central point puts and the bottom fixed connection of separator, the left side of separator and the right side fixed connection of second pipeline.

Further, the top and the left bottom fixed connection of fourth pipeline of separator, the right side of fourth pipeline and the left side fixed connection of demister, the top and the left bottom fixed connection of fifth pipeline of demister, the bottom on fifth pipeline right side and the top fixed connection of compressor.

Further, the right side of the separator is fixedly connected with the left side of a sixth pipeline, the top of the right side of the sixth pipeline is fixedly connected with the outer side of the bottom of the refrigerator shell, and the top of the right side of the sixth pipeline extends to the inside of the refrigerator shell and is fixedly connected with the bottom of the condenser.

Further, the outside of condenser and the inboard fixed connection of refrigerator shell bottom, the top of condenser and the bottom fixed connection of seventh pipeline, and the top of seventh pipeline and the bottom fixed connection of compressor, the left side of inlet tube and the right side fixed connection that the condenser leaned on the bottom, and the right side of inlet tube extends to the outside of refrigerator shell, the left side of outlet pipe and the right side fixed connection that the condenser leaned on the top, and the right side of outlet pipe extends to the outside of refrigerator shell.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. the lithium hydroxide mirabilite crystallization production device coupled with the refrigeration system is convenient for chemical reaction to produce mirabilite by arranging the crystallizer, is convenient for heat exchange reaction between refrigerant liquid and materials by arranging the external cooler, is convenient for leading the refrigerant liquid and gas generated by heat exchange and heat absorption of the materials in the external cooler into the separator by arranging the second pipeline, is convenient for leading the liquid generated by cooling the gasified refrigerant in the separator and the demister into the external cooler for reaction again by arranging the connecting pipeline, is convenient for sending the materials in the crystallizer into the external cooler for indirect heat exchange with the refrigerant by arranging the circulating pump, the first pipeline and the third pipeline, returns to the crystallizer after cooling, is convenient for gas-liquid separation of the gasified refrigerant again by arranging the separator, is convenient for leading gaseous refrigerant into the demister by arranging the fourth pipeline, the demister is arranged to conveniently remove a little liquid drops in the gaseous refrigerant, the fifth pipeline is arranged to conveniently guide the gaseous refrigerant into the compressor, the compressor is arranged to conveniently compress the gaseous refrigerant into high-temperature high-pressure refrigerant gas, the sixth pipeline is arranged to conveniently guide the high-pressure low-temperature refrigerant liquid converted in the condenser into the separator for recycling, the refrigerator shell is arranged to conveniently protect the internal structure, the condenser is arranged to conveniently exchange heat between the high-temperature high-pressure refrigerant gas compressed by the compressor and the circulating water, thereby being converted into high-pressure low-temperature refrigerant liquid, the high-temperature high-pressure refrigerant gas compressed by the compressor is conveniently led into the condenser by arranging the seventh pipeline, through setting up the inlet tube, conveniently leading-in circulating water in to the condenser, through setting up the outlet pipe, conveniently leading out used circulating water.

2. The lithium hydroxide mirabilite crystallization production device coupled with the refrigeration system is characterized in that a circulating pump is started firstly, then a material is sent into an external cooler through the circulating pump to perform indirect heat exchange with a refrigerant, the cooled material returns to a crystallizer, then refrigerant liquid is changed into gas through heat absorption of the external cooler and the material heat exchange, the gas enters a separator, the liquid which is not gasified is continuously recycled, the gasified refrigerant enters a demister to remove a little liquid drops and then enters a compressor, finally the gas is compressed into high-temperature high-pressure refrigerant gas through the compressor, and the gas enters the condenser to be changed into high-pressure low-temperature refrigerant liquid through the heat exchange with circulating water and then enters the separator to be recycled.

Drawings

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

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a front sectional structural view of the present invention.

In the figure: 1 crystallizer, 2 first pipelines, 3 external coolers, 4 second pipelines, 5 connecting pipelines, 6 circulating pumps, 7 third pipelines, 8 circulating structures, 801 separators, 802 fourth pipelines, 803 demister, 804 fifth pipelines, 805 compressors, 806 sixth pipelines, 807 refrigerator shells, 808 condensers, 809 seventh pipelines, 810 water inlet pipes and 811 water outlet pipes.

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, a lithium hydroxide mirabilite crystallization production device coupled with a refrigeration system comprises a crystallizer 1, which is provided with the crystallizer 1 to facilitate chemical reaction and produce mirabilite, the crystallizer 1 is fixedly connected with a first pipeline 2, the first pipeline 2 is fixedly connected with an external cooler 3, the external cooler 3 is arranged to facilitate heat exchange reaction between refrigerant liquid and materials, the external cooler 3 is fixedly connected with a second pipeline 4, the second pipeline 4 is arranged to facilitate introduction of gas generated by heat absorption and phase change of the refrigerant liquid between the external cooler 3 and the materials into a separator 801 and introduction of gas generated by heat exchange absorption and phase change of the refrigerant liquid and the materials into a connecting pipeline 5, the connecting pipeline 5 is arranged to facilitate introduction of liquid generated by cooling of the gasified refrigerant in the separator 801 and a demister 803 into the external cooler 3 for reaction again, the external part of the crystallizer 1 is fixedly connected with a circulating pump 6, the external part of the circulating pump 6 is fixedly connected with a third pipeline 7, the circulating pump 6, the first pipeline 2 and the third pipeline 7 are arranged, so that materials in the crystallizer 1 can be conveniently sent into the external cooler 3 to indirectly exchange heat with a refrigerant, the cooled materials return to the crystallizer 1, and the external part of the connecting pipeline 5 is fixedly connected with a circulating structure 8;

the circulating structure 8 comprises a separator 801, the gas-liquid separation of the gasified refrigerant is facilitated by arranging the separator 801, a fourth pipeline 802 is fixedly connected to the outside of the separator 801, the gas refrigerant is conveniently guided into a demister 803 by arranging the fourth pipeline 802, the demister 803 is fixedly connected to the outside of the fourth pipeline 802, a small amount of liquid drops in the gas refrigerant are conveniently removed by arranging the demister 803, a fifth pipeline 804 is fixedly connected to the outside of the demister 803, the gas refrigerant is conveniently guided into a compressor 805 by arranging the fifth pipeline 804, a compressor 805 is fixedly connected to the outside of the fifth pipeline 804, the gas refrigerant is conveniently compressed into high-temperature and high-pressure refrigerant gas by arranging the compressor 805, a sixth pipeline 806 is fixedly connected to the outside of the separator 801, and the high-pressure and low-temperature refrigerant liquid converted in the condenser 808 is conveniently guided into the separator 801 to be recycled by arranging the sixth pipeline 806, sixth pipeline 806's outside fixedly connected with refrigerator shell 807, through setting up refrigerator shell 807, conveniently protect the inner structure, the inside fixedly connected with condenser 808 of refrigerator shell 807, through setting up condenser 808, conveniently carry out the heat transfer through the high temperature high pressure refrigerant gas of compressor 805 compression and circulating water, thereby change into high pressure low temperature refrigerant liquid, the outside fixedly connected with seventh pipeline 809 of condenser 808, through setting up seventh pipeline 809, conveniently to the gaseous leading-in condenser 808 of the high temperature high pressure refrigerant of compressor 805 compression, condenser 808's outside fixedly connected with inlet tube 810, through setting up inlet tube 810, conveniently to leading-in circulating water in condenser 808, condenser 808's outside fixedly connected with outlet pipe 811, through setting up outlet pipe 811, conveniently lead out used circulating water.

When in implementation, the method comprises the following steps:

1) firstly, starting the mirabilite crystallization production device;

2) then the material is sent into an external cooler 3 through a circulating pump 6 to carry out indirect heat exchange with a refrigerant, and the cooled material returns to the crystallizer 1;

3) then, the refrigerant liquid is changed into gas through heat exchange and heat absorption with materials in the external cooler 3, the gas enters the separator 801, the liquid which is not gasified is continuously recycled, and the gasified refrigerant enters the demister 803 to remove a little liquid drops and then enters the compressor 805;

4) finally, the refrigerant gas is compressed into high-temperature and high-pressure refrigerant gas by a compressor 805, and then enters a condenser 808 to exchange heat with circulating water to be changed into high-pressure and low-temperature refrigerant liquid, and then enters a separator 801 to be recycled.

In conclusion, this lithium hydroxide glauber's salt crystallization apparatus for producing with refrigerating system coupling, structural effect.

And, start the circulating pump 6 at first, then the supplies are sent into the external cooler 3 to carry on the indirect heat exchange with refrigerant through the circulating pump 6, return to the crystallizer 1 after cooling, then the refrigerant liquid absorbs the heat phase to turn into the gas with the heat exchange of the supplies in the external cooler 3, enter the segregator 801, the liquid not gasified continues to circulate and use, the refrigerant after gasifying enters the demister 803 and removes a few liquid drops and enters the compressor 805, compress into high-temperature high-pressure refrigerant gas through the compressor 805 finally, enter the condenser 808 and change into high-pressure low-temperature refrigerant liquid after the heat exchange with the circulating water, enter the segregator 801 to circulate and use, solve the existing Glauber's salt crystal production apparatus, the coolant that the cooling process adopts carries on the indirect heat exchange with the supplies has low heat exchange coefficient, heat exchange efficiency is poor, the heat exchange flow is complicated, waste the heat transfer temperature difference, cause the apparatus to put into high, the energy consumption of the system is high.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium hydroxide glauber's salt crystallization apparatus for producing with refrigerating system coupling, includes crystallizer (1), its characterized in that: a first pipeline (2) is fixedly connected to the outside of the crystallizer (1), an external cooler (3) is fixedly connected to the outside of the first pipeline (2), a second pipeline (4) is fixedly connected to the outside of the external cooler (3), a connecting pipeline (5) is fixedly connected to the outside of the external cooler (3), a circulating pump (6) is fixedly connected to the outside of the crystallizer (1), a third pipeline (7) is fixedly connected to the outside of the circulating pump (6), and a circulating structure (8) is fixedly connected to the outside of the connecting pipeline (5);

the circulation structure (8) comprises a separator (801), a fourth pipeline (802) is fixedly connected to the outside of the separator (801), a demister (803) is fixedly connected to the outside of the fourth pipeline (802), a fifth pipeline (804) is fixedly connected to the outside of the demister (803), a compressor (805) is fixedly connected to the outside of the fifth pipeline (804), a sixth pipeline (806) is fixedly connected to the outside of the separator (801), a refrigerator shell (807) is fixedly connected to the outside of the sixth pipeline (806), a condenser (808) is fixedly connected inside the shell (807) of the refrigerator, the outside fixedly connected with seventh pipeline (809) of condenser (808), the outside fixedly connected with inlet tube (810) of condenser (808), the outside fixedly connected with outlet pipe (811) of condenser (808).

2. The apparatus for producing glauberite crystal coupled to a refrigeration system of claim 1, wherein: the top and the left bottom fixed connection of first pipeline (2) of crystallizer (1), and inside first pipeline (2) left bottom extended to crystallizer (1), the bottom on first pipeline (2) right side and the top fixed connection of external cooler (3), the right side that external cooler (3) leaned on the top and the left side fixed connection of second pipeline (4).

3. The apparatus for producing sodium liriodate crystal coupled with a refrigeration system according to claim 1, wherein: the utility model discloses a circulating pump, including outer cooler (3), top fixed connection on the right side of bottom and connecting tube (5), the top fixed connection on the bottom and third pipeline (7) right side of outer cooler (3), the left side of third pipeline (7) and the right side fixed connection of circulating pump (6).

4. The apparatus for producing glauberite crystal coupled to a refrigeration system of claim 1, wherein: the bottom of circulating pump (6) and the top fixed connection of crystallizer (1), and the bottom of circulating pump (6) extends to the inside of crystallizer (1), the top of connecting tube (5) central point position and the bottom fixed connection of separator (801), the left side of separator (801) and the right side fixed connection of second pipeline (4).

5. The apparatus for producing glauberite crystal coupled to a refrigeration system of claim 1, wherein: the top of the separator (801) is fixedly connected with the bottom of the left side of a fourth pipeline (802), the right side of the fourth pipeline (802) is fixedly connected with the left side of a demister (803), the top of the demister (803) is fixedly connected with the bottom of the left side of a fifth pipeline (804), and the bottom of the right side of the fifth pipeline (804) is fixedly connected with the top of a compressor (805).

6. The apparatus for producing glauberite crystal coupled to a refrigeration system of claim 1, wherein: the right side of the separator (801) is fixedly connected with the left side of a sixth pipeline (806), the top of the right side of the sixth pipeline (806) is fixedly connected with the outer side of the bottom of the refrigerator shell (807), and the top of the right side of the sixth pipeline (806) extends to the inside of the refrigerator shell (807) and is fixedly connected with the bottom of the condenser (808).

7. The apparatus for producing glauberite crystal coupled to a refrigeration system of claim 1, wherein: the outside of condenser (808) and the inboard fixed connection of refrigerator shell (807) bottom, the top of condenser (808) and the bottom fixed connection of seventh pipeline (809), and the top of seventh pipeline (809) and the bottom fixed connection of compressor (805), the left side of inlet tube (810) and the right side fixed connection of condenser (808) near the bottom, and the right side of inlet tube (810) extends to the outside of refrigerator shell (807), the left side of outlet pipe (811) and the right side fixed connection of condenser (808) near the top, and the right side of outlet pipe (811) extends to the outside of refrigerator shell (807).