CN206488677U - Aluminium cell low temperature exhaust heat recycling system - Google Patents
Aluminium cell low temperature exhaust heat recycling system Download PDFInfo
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- CN206488677U CN206488677U CN201720168390.2U CN201720168390U CN206488677U CN 206488677 U CN206488677 U CN 206488677U CN 201720168390 U CN201720168390 U CN 201720168390U CN 206488677 U CN206488677 U CN 206488677U
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- heat
- flue gas
- flue
- electrolytic cell
- branch pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses aluminium cell low temperature exhaust heat recycling system, including electrolytic cell underground flue, dust arrester installation, fume extractor, absorption type heat pump assembly, flue gas heat-exchange unit and boiler；Driving heat source of the utility model by the use of Boiler Steam as absorption type heat pump assembly, recycles the low temperature exhaust heat in aluminium cell flue gas, and the heat is converted into middle warm water, it is simple in construction, equipment investment is few, has reclaimed low temperature exhaust heat, effectively reduces the wasting of resources；And the water entered in boiler first passes around the heat exchange of flue gas heat-exchange unit, the heat utilization efficiency of flue gas is improved in addition, flue gas heat-exchange unit is simple in construction in the utility model, coiled pipe is outer without housing cladding, is convenient to clean the dust stratification on snakelike tube wall；Flue gas heat-exchange unit can be slided along track, facilitated and be installed on maintenance.
Description
Technical field：
The utility model is related to waste heat recycling system, more particularly to aluminium cell low temperature exhaust heat recycling system.
Background technology：
Aluminum electrolysis industry belongs to highly energy-consuming trade, and current electrolysis aluminium produces energy utilization rate less than 50%, and electric energy removes one
Point produced for cell reaction outside electrolytic aluminium, it is other more than half lost in the form of heat leakage.The heat of loss passes through
The different parts of electrolytic cell are dispersed into peripheral space, and a portion is discharged into air in low-temperature flue gas form, and contained is remaining
Thermal resource is wasted, and the heat that flue gas is taken away substantially accounts for the 15%-30% of whole cell body system expenditure.Although electrolytic cell holds
Amount is different, but the flue gas system of electrolytic cell is essentially identical in general, and the flue gas of every trough passes through cell body system respectively
The branch gas fume pipe of itself, collects and enters underground flue, be then fed into dust pelletizing system, the flue gas after dust separation it is last by
Air-introduced machine is extracted into after chimney and discharged, and the low-temperature flue gas temperature produced during Aluminum Electrolysis Production is generally 85 DEG C -140 DEG C, recovery
The new situation of aluminum electrolysis industry energy-saving and emission-reduction work can be started using this part of waste heat, and low-temperature flue gas waste heat technology is a kind of
Effective energy saving way.
Utility model content：
The purpose of this utility model is discharged into solve a large amount of low-temperature flue gas in existing aluminium cell production process
In air, the problem of residual heat resources contained therein are wasted recycles there is provided a kind of aluminium cell low temperature exhaust heat
System.
The purpose of this utility model is implemented by following technical scheme, aluminium cell low temperature exhaust heat recycling system, and it is wrapped
Include electrolytic cell underground flue, dust arrester installation and fume extractor, the exhanst gas outlet of the electrolytic cell underground flue and the dress that gathers dust
The smoke inlet connection put, the exhanst gas outlet of the dust arrester installation is connected with the smoke inlet of the fume extractor；
It also includes absorption type heat pump assembly, flue gas heat-exchange unit and boiler；
The smoke inlet of heat collector passes through the first flue gas with the electrolytic cell underground flue in the absorption type heat pump assembly
Branch pipe is connected, and the exhanst gas outlet of the heat collector is connected with the electrolytic cell underground flue by the second flue gas branch pipe, described
First flue gas branch pipe or the second flue gas branch pipe are provided with circulating pump；The thermal medium of reheater in the absorption type heat pump assembly
Outlet is connected with heat stations, and the water inlet of heater is connected with heat stations backwater in the absorption type heat pump assembly；
The flue gas heat-exchange unit is in electrolytic cell underground flue, and the flue gas heat-exchange unit includes support frame and is fixed at
Coiled pipe on support frame as described above, the water inlet connection water source of the coiled pipe, the delivery port of the coiled pipe respectively with it is described
The water inlet connection of heat stations and the boiler；Road wheel is provided with the lower section of support frame as described above, in the electrolytic cell underground flue
Interior to be provided with track corresponding with the road wheel, the road wheel is supported on the track, and can be along the track travel, side
Toilet states heat exchanger and passes in and out the electrolytic cell underground flue, is easy to arrangement and the maintenance of the flue gas heat-exchange unit；
The steam drain of the boiler is connected with the driving heat source entrance of inspissator in the absorption type heat pump assembly.
Further, the electrolytic cell underground flue between the first flue gas branch pipe and the second flue gas branch pipe
It is interior to be provided with valve.
Further, the flue gas heat-exchange unit is arranged under the first flue gas branch pipe upstream or the second flue gas branch pipe
In the electrolytic cell underground flue of trip.
Advantage of the present utility model：
1st, driving heat source of the utility model by the use of Boiler Steam as absorption type heat pump assembly, is recycled from aluminium electricity
The low temperature exhaust heat in groove flue gas is solved, and the heat is converted into middle warm water, simple in construction, equipment investment is few, has reclaimed low temperature
Waste heat, effectively reduces the wasting of resources；And the water entered in boiler first passes around the heat exchange of flue gas heat-exchange unit, improves cigarette
The heat utilization efficiency of gas.
2nd, flue gas heat-exchange unit is simple in construction in the utility model, and coiled pipe is outer without housing cladding, is convenient to clean snakelike tube wall
On dust stratification；Flue gas heat-exchange unit can be slided along track, facilitated and be installed on maintenance.
Brief description of the drawings：
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the aluminium cell low temperature exhaust heat recycling system structural representation of embodiment 1；
Fig. 2 is flue gas heat-exchange unit structural representation in embodiment 1；
Fig. 3 is Fig. 2 A-A views；
Fig. 4 is absorption heat pump set structure schematic diagram in embodiment 1.
In figure：Electrolytic cell underground flue 1, dust-precipitator 2, chimney 3, absorption type heat pump assembly 4, flue gas heat-exchange unit 5, boiler 6,
Heat collector 7, the first flue gas branch pipe 8, the second flue gas branch pipe 9, valve 10, circulating pump 11, reheater 12, heater 13, coiled pipe
14, road wheel 15, track 16, inspissator 17, heat stations 18, water source 19, support frame 20.
Embodiment：
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Embodiment 1：
Aluminium cell low temperature exhaust heat recycling system, it includes electrolytic cell underground flue 1, dust-precipitator 2, chimney 3, absorption
Formula source pump 4, flue gas heat-exchange unit 5 and boiler 6；The exhanst gas outlet of electrolytic cell underground flue 1 connects with the smoke inlet of dust-precipitator 2
Logical, the exhanst gas outlet of dust-precipitator 2 is connected with the smoke inlet of chimney 3；
The smoke inlet of heat collector 7 passes through the first flue gas branch pipe 8 with electrolytic cell underground flue 1 in absorption type heat pump assembly 4
Connection, the exhanst gas outlet of heat collector 7 is connected with electrolytic cell underground flue 1 by the first flue gas branch pipe 8, in the first flue gas branch pipe 8
Valve 10 is provided with electrolytic cell underground flue 1 between the second flue gas branch pipe 9；Circulating pump is provided with the first flue gas branch pipe 8
11；The thermal medium outlet of reheater 12 is connected with heat stations 18 in absorption type heat pump assembly 4, heater in absorption type heat pump assembly 4
13 water inlet is connected with the backwater of heat stations 18；
Flue gas heat-exchange unit 5 is arranged in the electrolytic cell underground flue 1 in the downstream of the second flue gas branch pipe 9；Flue gas heat-exchange unit 5 includes
Support frame 20 and the coiled pipe 14 being fixed on support frame 20, the water inlet connection water source 19 of coiled pipe 14, coiled pipe 14
Water inlet of the delivery port respectively with heat stations 18 and boiler 6 is connected；Road wheel 15 is provided with the lower section of support frame 20, in electrolysis trough
Track 16 corresponding with road wheel 15 is provided with lower flue 1, road wheel 15 is supported on track 16, and can be walked along track 16,
Facilitate heat exchanger to pass in and out electrolytic cell underground flue 1, be easy to arrangement and the maintenance of flue gas heat-exchange unit 5；
The steam drain of boiler 6 is connected with the driving heat source entrance of inspissator 17 in absorption type heat pump assembly 4.
Operation principle：
The water supply closed in valve 10, flue gas heat-exchange unit 5 is after heat exchange, part supply heat stations 18, another part supply
Boiler 6 produces steam, and absorption heat exchange pump assembly is using the steam of boiler 6 as driving heat source, in heater 13 and inspissator 17
Connected component is filled with lithium-bromide solution；
Negative pressure state is always maintained in heat collector 7, will low-temperature boiling, gasification using water under certain environment under low pressure
Principle, water is changed into vapor.Then, vapor is incorporated into heater 13, then sprayed with lithium-bromide solution, utilize bromination
The characteristic of the powerful water imbibition of lithium solution, it, which absorbs vapor, can produce substantial amounts of heat, and the water of circulation line in heater 13 is added
Heat, raises its temperature.
The effect of inspissator 17 is concentrated to absorbing the lithium bromide weak solution after vapor, is retrieved with powerful
The lithium bromide concentrated solution of water imbibition.
Reheater 12 is to become lithium bromide concentrated solution using steam heating concentration lithium bromide weak solution in inspissator 17 and steam
The secondary dead steam issued, is reheated to the hot water in above-mentioned circulation line after the heating of heater 13, so as to reach
Higher temperature.
Following process can be specifically divided into：
Process one：The extraction of waste heat heat
In the heat collector 7 of negative pressure, using the water principle that boiling point is reduced under negative pressure state, the steam from reheater 12
Solidifying Water spray low-temperature evaporation in heat collector 7, coagulates water and absorbs fume afterheat, carburation by evaporation produces steam and enters heater 13, complete
Into the extraction process of waste heat heat.
Process two：The transfer of waste heat heat
In heater 13, using the water suction exothermicity of lithium bromide concentrated solution, the lithium bromide from inspissator 17 is dense molten
Liquid is distributed in outside the heat exchanger tube of heater 13, absorbs the water vapour for carrying out self-heating heat exchanger, and the temperature of solution is raised rapidly, is heated
The heating agent of raising temperature is needed in heat exchanger tube, the heat for realizing low-temperature heat source is shifted to heated heating agent, while lithium bromide is molten
Liquid is no longer used by dense thinning with water imbibition, it is necessary to concentrate Posterior circle.
Process three：Working medium is concentrated
In inspissator 17, using the heat of driving heat source, the lithium bromide weak solution from heater 13 is concentrated,
The concentrated solution of generation, which is continued back in heater 13, to be continued to absorb steam heating supplying hot water, the high temperature secondary that solution concentration is produced
Steam removes reheater 12.
Process four：Indirect steam is reheated
In reheater 12, using the heat of the high temperature secondary steam condensation latent heat from inspissator 17, to carrying out self-heating
The heating agent that the process of device 13 is once heated is heated again, the heating agent of temperature needed for being finally reached, and supplies heat stations 18；Steam coagulates
Form and be transported to evaporator for solidifying water and proceed circulating and evaporating.
Heat stations 18 can continue as user's heating or convey heat energy for power station.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (3)
1. aluminium cell low temperature exhaust heat recycling system, it includes electrolytic cell underground flue, dust arrester installation and fume extractor, institute
The exhanst gas outlet for stating electrolytic cell underground flue is connected with the smoke inlet of the dust arrester installation, the exhanst gas outlet of the dust arrester installation
Connected with the smoke inlet of the fume extractor；
Characterized in that, it also includes absorption type heat pump assembly, flue gas heat-exchange unit and boiler；
The smoke inlet of heat collector passes through the first flue gas branch pipe with the electrolytic cell underground flue in the absorption type heat pump assembly
Connection, the exhanst gas outlet of the heat collector is connected with the electrolytic cell underground flue by the second flue gas branch pipe, described first
Flue gas branch pipe or the second flue gas branch pipe are provided with circulating pump；The thermal medium outlet of reheater in the absorption type heat pump assembly
It is connected with heat stations, the water inlet of heater is connected with heat stations backwater in the absorption type heat pump assembly；
The flue gas heat-exchange unit is in electrolytic cell underground flue, and the flue gas heat-exchange unit includes support frame and is fixed at described
Coiled pipe on support frame, the water inlet connection water source of the coiled pipe, the delivery port of the coiled pipe respectively with the heat stations
Connected with boiler feed water mouthful；Road wheel is provided with the lower section of support frame as described above, is provided with and institute in the electrolytic cell underground flue
The corresponding track of road wheel is stated, the road wheel is supported on the track；
The steam drain of the boiler is connected with the driving heat source entrance of inspissator in the absorption type heat pump assembly.
2. aluminium cell low temperature exhaust heat recycling system according to claim 1, it is characterised in that in first cigarette
Valve is provided with the electrolytic cell underground flue between gas branch pipe and the second flue gas branch pipe.
3. aluminium cell low temperature exhaust heat recycling system according to claim 1, it is characterised in that the flue gas heat exchange
Device is arranged in the electrolytic cell underground flue in the first flue gas branch pipe upstream or the second flue gas branch pipe downstream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168390.2U CN206488677U (en) | 2017-02-23 | 2017-02-23 | Aluminium cell low temperature exhaust heat recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168390.2U CN206488677U (en) | 2017-02-23 | 2017-02-23 | Aluminium cell low temperature exhaust heat recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206488677U true CN206488677U (en) | 2017-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720168390.2U Active CN206488677U (en) | 2017-02-23 | 2017-02-23 | Aluminium cell low temperature exhaust heat recycling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206488677U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410761A (en) * | 2019-08-06 | 2019-11-05 | 西安陕鼓动力股份有限公司 | Waste heat recycles vaporization method processed |
| CN110453248A (en) * | 2019-08-27 | 2019-11-15 | 神华准能资源综合开发有限公司 | A kind of the thermal balance regulating device and method of electrolytic cell |
-
2017
- 2017-02-23 CN CN201720168390.2U patent/CN206488677U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410761A (en) * | 2019-08-06 | 2019-11-05 | 西安陕鼓动力股份有限公司 | Waste heat recycles vaporization method processed |
| CN110453248A (en) * | 2019-08-27 | 2019-11-15 | 神华准能资源综合开发有限公司 | A kind of the thermal balance regulating device and method of electrolytic cell |
| CN110453248B (en) * | 2019-08-27 | 2021-03-02 | 神华准能资源综合开发有限公司 | Thermal balance adjusting device and method for electrolytic cell |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 014010 rare earth Kokusai Hotel, 1803 rare earth hi tech Zone, the Inner Mongolia Autonomous Region, Baotou Patentee after: Inner Mongolia North control thermal power Co., Ltd Address before: 014010 rare earth Kokusai Hotel, 1803 rare earth hi tech Zone, the Inner Mongolia Autonomous Region, Baotou Patentee before: INNER MONGOLIA JUNENG HEAT ENERGY TECHNOLOGY Co.,Ltd. |