CN107137944A - A kind of hygroscopic solution regenerative system - Google Patents
A kind of hygroscopic solution regenerative system Download PDFInfo
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- CN107137944A CN107137944A CN201710500815.XA CN201710500815A CN107137944A CN 107137944 A CN107137944 A CN 107137944A CN 201710500815 A CN201710500815 A CN 201710500815A CN 107137944 A CN107137944 A CN 107137944A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0029—Use of radiation
- B01D1/0035—Solar energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0094—Evaporating with forced circulation
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Abstract
The invention discloses a kind of hygroscopic solution regenerative system, including:Vacuum heat collection pipe, NaOH solution tank NaOH, return duct, liquid feed valve, liquid valve, exhaust steam valve.In use, opening exhaust steam valve and liquid feed valve, hygroscopic solution enters system from liquid feed valve；Vacuum heat collection pipe is heated to entering its internal hygroscopic solution first, then because the hygroscopic solution in vacuum heat collection pipe and unheated hygroscopic solution have the effect of density contrast, hygroscopic solution is set to be flowed in vacuum heat collection pipe, NaOH solution tank NaOH, the closed-loop path of return duct formation, the heating of hygroscopic solution in complete paired systems；Meanwhile, the steam that hygroscopic solution is produced in heating is discharged from exhaust steam valve, is finally completed the regeneration of hygroscopic solution, and the hygroscopic solution of regeneration flows out from liquid valve, cycling and reutilization.The design of the hygroscopic solution regenerative system, directly makes vacuum heat collection pipe heat hygroscopic solution, eliminates the intermediate link of heat exchanger, simplifies heat transfer process, improves heat exchange efficiency, solves the problem in the field at this stage.
Description
Technical field
The present invention relates to solar energy heat utilization field, more specifically to a kind of hygroscopic solution regenerative system.
Background technology
Hygroscopic solution is dehumidification solution, applies relatively broad in modern industrial or agricultural and daily life, such as lithium-bromide solution,
Lithium chloride solution etc..Hygroscopic solution absorb moisture while, reduce the concentration of itself, obtain the weak solution of hygroscopic solution；
And in actual life and production, in order that hygroscopic solution is recycled, it is necessary to consume certain energy, absorb it
Moisture evaporation, the process is the regeneration of hygroscopic solution.
The energy of hygroscopic solution regeneration is generally provided by fossil fuel, industrial exhaust heat, solar energy, but in actual production process
In, the factor such as comprehensive economy, the feature of environmental protection, practicality considers, solar energy is the optimal selection that hygroscopic solution regenerates.
In the prior art, the solar thermal collection system and solution regeneration system of hygroscopic solution regeneration set to be separate
Meter, the two realized by heat exchanger the exchange of energy, i.e. medium heated in solar thermal collector after, flow to changing for regenerative system
In hot device, so that its moisture evaporation is heated and made to hygroscopic solution, the regeneration of hygroscopic solution is completed.But in the energy exchange
During, the split design of solar thermal collection system and solution regeneration system, it has to increase the heat exchange link of intermediate medium, make
Heat exchange efficiency reduction is obtained, is unfavorable for making full use of for heat energy.
Therefore, how to simplify heat transfer process, improve the heat exchange efficiency and cycling and reutilization of hygroscopic solution regeneration, be at this stage
Field problem urgently to be resolved hurrily.
The content of the invention
In view of this, it is an object of the invention to provide a kind of hygroscopic solution regenerative system, the system, which is simplified, to exchange heat
Journey, improves heat exchange efficiency, realizes the cycling and reutilization of hygroscopic solution, solves the problem in the field at this stage.
A kind of hygroscopic solution regenerative system, including：
Vacuum heat collection pipe；
NaOH solution tank NaOH, the NaOH solution tank NaOH is connected with the vacuum heat collection pipe, for containing on hygroscopic solution, and the NaOH solution tank NaOH
Provided with exhaust steam valve；
Return duct, one end of the return duct is connected with the vacuum heat collection pipe, and the other end is connected with the NaOH solution tank NaOH, and
The vacuum heat collection pipe, the NaOH solution tank NaOH, the return duct, which can be formed, makes the closed-loop path of the hygroscopic solution flowing, and institute
Stating closed-loop path and being provided with is used for inlet and liquid outlet that the hygroscopic solution is passed in and out, and the inlet and the liquid outlet
On be respectively equipped with liquid feed valve and liquid valve.
It is preferred that, described hygroscopic solution regenerative system, in addition to：
Inductor, the inductor is used for the liquid level h for detecting hygroscopic solution in the NaOH solution tank NaOH；
Fluid level controller, the fluid level controller is preset with h minimum value a and maximum b, and with the liquid feed valve and institute
State liquid valve communication connection；
Time controller, the time controller is preset with automatic shut-in time value t, and with the fluid level controller, institute
State liquid feed valve and liquid valve communication connection；
As h≤a, regenerative process terminates, and the fluid level controller controls the liquid valve to open and start the time
Controller；When the time that the time controller starts being equal to t, the time controller is stopped and gone out described in control
Liquid valve closes and controlled the liquid feed valve to open；As h >=b, the fluid level controller controls the liquid feed valve to close, regeneration
Process starts.
It is preferred that, described hygroscopic solution regenerative system, the exhaust steam valve is arranged on the top of the NaOH solution tank NaOH.
It is preferred that, described hygroscopic solution regenerative system, in vertical height, the NaOH solution tank NaOH is higher than the vacuum heat-collecting
Pipe.
It is preferred that, described hygroscopic solution regenerative system, in vertical height, the NaOH solution tank NaOH is higher than the return duct.
It is preferred that, described hygroscopic solution regenerative system, the liquid feed valve is arranged on the upper end of the return duct.
It is preferred that, described hygroscopic solution regenerative system, the liquid valve is arranged on the lower end of the return duct.
It is preferred that, described hygroscopic solution regenerative system, the vacuum heat collection pipe is glass-metal vacuum heat collection pipe.
It is preferred that, described hygroscopic solution regenerative system, the vacuum heat collection pipe is straight-through vacuum heat collecting tube.
Hygroscopic solution regenerative system proposed by the present invention, including:Vacuum heat collection pipe；NaOH solution tank NaOH, the NaOH solution tank NaOH with it is described
Vacuum heat collection pipe is connected, and is set for containing hygroscopic solution, and in the NaOH solution tank NaOH higher than the part of the liquid level of the hygroscopic solution
There is exhaust steam valve；Return duct, one end of the return duct is connected with the vacuum heat collection pipe, and the other end is connected with the NaOH solution tank NaOH,
And the vacuum heat collection pipe, the NaOH solution tank NaOH, the return duct can form the closed-loop path for flowing the hygroscopic solution, and
The closed-loop path is provided with the liquid feed valve and liquid valve for being used for controlling the hygroscopic solution turnover.In use, opening exhaust steam valve
And liquid feed valve, hygroscopic solution enters system from liquid feed valve, and forms loop in vacuum heat collection pipe, NaOH solution tank NaOH, return duct；Vacuum
Thermal-collecting tube is heated to entering its internal hygroscopic solution first, then because the hygroscopic solution in vacuum heat collection pipe is not with heating
Hygroscopic solution there is the effect of density contrast, make hygroscopic solution vacuum heat collection pipe, NaOH solution tank NaOH, return duct formation closed-loop path
The heating of hygroscopic solution in middle flowing, complete paired systems；Meanwhile, the steam that hygroscopic solution is produced in heating is arranged from exhaust steam valve
Go out, be finally completed the regeneration of hygroscopic solution, the hygroscopic solution of regeneration flows out from liquid valve, cycling and reutilization.The hygroscopic solution is again
The design of raw system, directly makes vacuum heat collection pipe heat hygroscopic solution, eliminates the intermediate link of heat exchanger, simplify
Heat transfer process, improves heat exchange efficiency, realizes the cycling and reutilization of hygroscopic solution, solves the problem in the field at this stage.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of hygroscopic solution regenerative system in the specific embodiment of the invention.
In Fig. 1：
Vacuum heat collection pipe -1, NaOH solution tank NaOH -2, exhaust steam valve -3, return duct -4, liquid feed valve -5, liquid valve -6, liquid level
Controller -7, time controller -8.
Embodiment
The core of present embodiment is to provide a kind of hygroscopic solution regenerative system, and the system, which is simplified, to exchange heat
Journey, improves heat exchange efficiency, realizes the cycling and reutilization of hygroscopic solution, solves the problem in the field at this stage.
Hereinafter, embodiment is illustrated referring to the drawings.In addition, embodiments illustrated below is not to described in claim
The content of the invention rise any restriction effect.In addition, the full content of the composition represented by example below is not limited to as right
It is required that necessary to the solution of described invention.
The hygroscopic solution regenerative system that present embodiment is provided, can include：Vacuum heat collection pipe 1, NaOH solution tank NaOH 2, return
Flow tube 4.Wherein, vacuum heat collection pipe 1 converts solar energy into heat energy, the hygroscopic solution passed in thermal-collecting tube；NaOH solution tank NaOH 2 is used for
Hygroscopic solution is contained, and exhaust steam valve 3 is provided with the part of liquid level of the NaOH solution tank NaOH 2 higher than its internal hygroscopic solution, for discharging
The steam produced in hygroscopic solution regenerative process；One end of return duct 4 is connected with vacuum heat collection pipe 1, the other end and the phase of NaOH solution tank NaOH 2
Even, and vacuum heat collection pipe 1, NaOH solution tank NaOH 2, the three of return duct 4 can form closed-loop path and hygroscopic solution energy in regenerative process
It is enough to be flowed naturally in the closed-loop path；Also, inlet and liquid outlet, and inlet are also provided with the closed-loop path
With the liquid feed valve 5 and liquid valve 6 that control hygroscopic solution turnover is respectively provided with liquid outlet.It please specifically refer to Fig. 1.
The hygroscopic solution regenerative system that present embodiment is provided, in use, opening exhaust steam valve 3 and liquid feed valve 5, moisture absorption
Solution enters system from liquid feed valve 5, and forms loop in vacuum heat collection pipe 1, NaOH solution tank NaOH 2, return duct 4；Vacuum heat collection pipe 1 is first
First heated to entering its internal hygroscopic solution, then because of the hygroscopic solution in vacuum heat collection pipe 1 and unheated moisture absorption
There is the effect of density contrast in solution, make hygroscopic solution in vacuum heat collection pipe 1, NaOH solution tank NaOH 2, the closed-loop path of the formation of return duct 4
Flowing, until hygroscopic solution heating is finished；At the same time, the steam that hygroscopic solution is produced in heating is discharged from exhaust steam valve 3,
The regeneration of hygroscopic solution is finally completed, the hygroscopic solution of regeneration flows out from liquid valve 6, cycling and reutilization.The hygroscopic solution regenerates
The design of system, directly makes vacuum heat collection pipe 1 heat hygroscopic solution, eliminates the intermediate link of heat exchanger, simplifies
Heat transfer process, improves heat exchange efficiency, realizes the cycling and reutilization of hygroscopic solution, solves the problem in the field at this stage.
The hygroscopic solution regenerative system that present embodiment is provided, in order to improve the intellectuality of the system, makes it non-
Can smoothly realize the regeneration and recycling of hygroscopic solution in the state of artificial control, the system be also provided with inductor,
Fluid level controller 7, time controller 8.Wherein, inductor is used for the liquid level for detecting hygroscopic solution in NaOH solution tank NaOH 2, Ke Yiyong
H is represented；Fluid level controller 7 is connected with sensor communication, and is preset with h minimum value a and maximum b, also, fluid level controller
7 are connected with liquid feed valve 5 and the communication of liquid valve 6, can control the opening and closing of liquid feed valve 5 and liquid valve 6；Time controller 8 and liquid level
Controller 7, liquid feed valve 5, the communication connection of liquid valve 6, can control the opening and closing of liquid feed valve 5 and liquid valve 6, and be preset with automatic pass
Close time value t.
The hygroscopic solution regenerative system that present embodiment is provided, during practical operation, as h≤a, regenerative process knot
Beam, the control liquid valve 6 of fluid level controller 7 is opened and starts time controller 8, now, hygroscopic solution discharges from liquid valve 6, when
Between controller 8 start timing；When the time that time controller 8 is opened being equal to t, time controller 8 is closed automatically, is controlled simultaneously
Liquid valve 6 closes and controlled liquid feed valve 5 to open, now, and regeneration hygroscopic solution discharge is finished, hygroscopic solution to be regenerated from
Liquid feed valve 5 enters system, as h >=b, and the control liquid feed valve 5 of fluid level controller 7 is closed, and hygroscopic solution enters regeneration link；Go forward side by side
Enter next cycle period.From above procedure, on the premise of no human assistance, this hygroscopic solution regenerative system can
The process of regeneration and the recycling of complete independently hygroscopic solution, and can automatically control hygroscopic solution according to the position of liquid level and enter
The rhythm gone out；The design, disclosure satisfy that heat exchange of the different solar radiations to hygroscopic solution, fully achieve intelligence automatic
Change.It please specifically refer to Fig. 1.
The hygroscopic solution regenerative system that present embodiment is provided, in order that the water generated in hygroscopic solution regenerative process
Vapour is smoothly discharged, and exhaust steam valve 3 can be arranged on to the top of NaOH solution tank NaOH 2；The setting, fully meets the principle of gas rising, and
Steam is set to be discharged from the top of NaOH solution tank NaOH 2.
The hygroscopic solution regenerative system that present embodiment is provided, in order to further make the hygroscopic solution into the system
The liquid stream of closed circulation is smoothly formed, and caters to the principle that hot solution rises, cold soln declines, can be by vacuum heat collection pipe 1
The bottom of NaOH solution tank NaOH 2 is arranged on return duct 4, i.e., in vertical height, NaOH solution tank NaOH 2 is higher than vacuum heat collection pipe 1 and return duct 4,
More smoothly flowed so as to the hygroscopic solution of internal system.
Present embodiment provide hygroscopic solution regenerative system, in order that sunray it is orthogonal with vacuum heat collection pipe 1,
I.e. 90 ° angles, with maximized absorption sunshine；, can be according to different use environment specific designs, such as in actual design
Depending on the latitude that vacuum heat collection pipe 1 and the angle on ground can be according to where localities, and it is bigger than local latitude with the angle of the two
10 ° or so are benefit.
The hygroscopic solution regenerative system that present embodiment is provided, for convenience hygroscopic solution flow into and out, can
So that liquid feed valve 5 and liquid valve 6 to be arranged on to the top and bottom of regenerative system respectively；In actual design, in order to not break
On the premise of 2 body structures of bad vacuum heat collection pipe 1 and NaOH solution tank NaOH, liquid feed valve 5 and liquid valve 6 can be separately positioned on return duct
4 top and bottom, so that hygroscopic solution smoothly flows in and out the system.
The hygroscopic solution regenerative system that present embodiment is provided, in order to improve the heat exchange property of vacuum heat collection pipe 1, side
Just design, the glass-metal vacuum heat collection pipe 1 of through type can be selected；Certainly, during actual design, equivalent effect is being played
On the premise of can also select other vacuum heat collection pipes, to provide energy for the regeneration of hygroscopic solution.
The hygroscopic solution regenerative system that present embodiment is provided, liquid feed valve 5, liquid valve 6 can be magnetic valve, steam discharge
Valve 3 can be mechanical valve, can also be magnetic valve.
Embodiment one：
Based on above hygroscopic solution regenerative system, design power of regeneration is molten as moisture absorption for 12kg/h lithium-bromide solution
Liquid, using 15 vacuum heat collection pipes, by the concentration of lithium-bromide solution from 50% lifting to 60% during, lithium-bromide solution
Temperature highest can reach 126 DEG C.
Embodiment two：
Based on above hygroscopic solution regenerative system, design power of regeneration is molten as moisture absorption for 25kg/h lithium-bromide solution
Liquid, using 30 vacuum heat collection pipes, by the concentration of lithium-bromide solution from 50% lifting to 60% during, lithium-bromide solution
Temperature highest can reach 135 DEG C, the thermal efficiency of system is about 57%, in the case that illumination is sufficient, the reproducible bromine of whole day
It is about 150kg-200kg to change lithium solution.
Embodiment three：
Based on above hygroscopic solution regenerative system, design power of regeneration is molten as moisture absorption for 50kg/h lithium chloride solution
Liquid, using 60 vacuum heat collection pipes, by the concentration of lithium chloride solution from 50% lifting to 60% during, lithium chloride solution
Temperature highest can reach 132 DEG C, the thermal efficiency of system is about 53%, in the case that illumination is sufficient, the reproducible chlorine of whole day
It is about 300kg-390kg to change lithium solution.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of hygroscopic solution regenerative system, it is characterised in that including：
Vacuum heat collection pipe (1)；
NaOH solution tank NaOH (2), the NaOH solution tank NaOH (2) is connected with the vacuum heat collection pipe (1), for containing hygroscopic solution, and described molten
Flow container (2) is provided with exhaust steam valve (3)；
Return duct (4), one end of the return duct (4) is connected with the vacuum heat collection pipe (1), the other end and the NaOH solution tank NaOH
(2) it is connected, and the vacuum heat collection pipe (1), the NaOH solution tank NaOH (2), the return duct (4) can be formed makes the hygroscopic solution
The closed-loop path of flowing, and the closed-loop path is provided with the inlet and liquid outlet passed in and out for the hygroscopic solution, and institute
State and liquid feed valve (5) and liquid valve (6) are respectively equipped with inlet and the liquid outlet.
2. hygroscopic solution regenerative system according to claim 1, it is characterised in that also include：
Inductor, the inductor is used for the liquid level h for detecting hygroscopic solution in the NaOH solution tank NaOH (2)；
Fluid level controller (7), the fluid level controller (7) is preset with h minimum value a and maximum b, and with the liquid feed valve
(5) connected with the liquid valve (6) communication；
Time controller (8), the time controller (8) is preset with automatic shut-in time value t, and with the fluid level controller
(7), the liquid feed valve (5) and the liquid valve (6) communication connection；
As h≤a, regenerative process terminates, when the fluid level controller (7) controls liquid valve (6) opening and starts described
Between controller (8)；When the time that the time controller (8) starts being equal to t, the time controller (8) is stopped, simultaneously
The liquid valve (6) is controlled to close and control the liquid feed valve (5) to open；As h >=b, fluid level controller (7) control
The liquid feed valve (5) is closed, and regenerative process starts.
3. hygroscopic solution regenerative system according to claim 1, it is characterised in that the exhaust steam valve (3) is arranged on described
The top of NaOH solution tank NaOH (2).
4. hygroscopic solution regenerative system according to claim 1, it is characterised in that in vertical height, the NaOH solution tank NaOH
(2) it is higher than the vacuum heat collection pipe (1).
5. hygroscopic solution regenerative system according to claim 1, it is characterised in that in vertical height, the NaOH solution tank NaOH
(2) it is higher than the return duct (4).
6. hygroscopic solution regenerative system according to claim 1, it is characterised in that the liquid feed valve (5) is arranged on described
The upper end of return duct (4).
7. hygroscopic solution regenerative system according to claim 1, it is characterised in that the liquid valve (6) is arranged on described
The lower end of return duct (4).
8. hygroscopic solution regenerative system according to claim 1, it is characterised in that the vacuum heat collection pipe (1) be glass-
Metal vacuum thermal-collecting tube (1).
9. hygroscopic solution regenerative system according to claim 1, it is characterised in that the vacuum heat collection pipe (1) is straight-through
Formula vacuum heat collection pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710500815.XA CN107137944B (en) | 2017-06-27 | 2017-06-27 | Moisture absorption solution regeneration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710500815.XA CN107137944B (en) | 2017-06-27 | 2017-06-27 | Moisture absorption solution regeneration system |
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| CN107137944A true CN107137944A (en) | 2017-09-08 |
| CN107137944B CN107137944B (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758875A (en) * | 2018-06-15 | 2018-11-06 | 广东工业大学 | A kind of hygroscopic solution regenerative system |
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| CN202792619U (en) * | 2012-08-21 | 2013-03-13 | 武汉托普森能源有限公司 | Solar-powered water heating and solution concentrating device |
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| CN106152594A (en) * | 2015-03-13 | 2016-11-23 | 广东工业大学 | A kind of lithium-bromide solution generator based on vacuum heat collection pipe |
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| CN2584262Y (en) * | 2002-12-09 | 2003-11-05 | 清华大学 | Device for regenerating absorption solution in liquid dehumidification system |
| CN202792619U (en) * | 2012-08-21 | 2013-03-13 | 武汉托普森能源有限公司 | Solar-powered water heating and solution concentrating device |
| CN106152594A (en) * | 2015-03-13 | 2016-11-23 | 广东工业大学 | A kind of lithium-bromide solution generator based on vacuum heat collection pipe |
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