CN110159376A - A kind of compound heat utilization power generating system of aluminium cell - Google Patents
A kind of compound heat utilization power generating system of aluminium cell Download PDFInfo
- Publication number
- CN110159376A CN110159376A CN201810211842.XA CN201810211842A CN110159376A CN 110159376 A CN110159376 A CN 110159376A CN 201810211842 A CN201810211842 A CN 201810211842A CN 110159376 A CN110159376 A CN 110159376A
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- China
- Prior art keywords
- heat exchanger
- water
- working medium
- pipe
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a kind of compound heat utilization power generating systems of aluminium cell, by electrolytic cell, cell wall heat exchanger, gas-water heat exchanger and screw expansion generating set, the electrolytic cell is located at below cell wall heat exchanger, electrolytic cell connects gas-water heat exchanger by smoke exhaust pipe, gas-water heat exchanger also passes through cell wall heat exchanger water inlet pipe connection cell wall heat exchanger, cell wall heat exchanger also passes through middle pressure steam pipe connecting screw expansion power generation unit, the compound heat utilization power generating system of aluminium cell of the present invention utilizes the fume afterheat generated in aluminium electrolysis process, pot shell wall dispersed heat carries out recycling power generation.The power consumption for substantially reducing aluminum electrolysis reduces the energy consumption and environmental pollution of entire industry.It benefits the nation and the people, competitiveness of the enhancing China's aluminium electroloysis industry in world's same industry.
Description
Technical field
The present invention relates to a kind of electricity generation system, specifically a kind of compound heat utilization power generating system of aluminium cell.
Background technique
Currently, Aluminum Electrolysis Production industry is famous energy consumption rich and influential family in the world, ton aluminium direct current consumption is in 13000kwh or more
And theoretical ton aluminium power consumption is between 6000-7000kwh, that is to say, that energy utilization rate is lower only 50% or so, in addition there is 50%
Energy convert in the form of potential energy.It distributes and (is distributed in an atmosphere by electrolysis flue gas waste heat and cell wall).Flue gas
And the heat dissipation of pot shell side wall accounts for the 50% of entire aluminium cell heat expenditure, 120 DEG C of flue-gas temperature or more (electrolytic cell smoke pipe import departments
Position).The heat that flue gas is taken away accounts for about 20% or so of entire slot energy expenditure.Pot shell side wall heat dissipation temperature 230-260 DEG C it
Between the heat that distributes account for 30% or so aluminum electrolysis temperature of entire slot energy expenditure between 900-1000 DEG C.
In conclusion the energy loss during aluminum electrolysis is very huge, if these damages of energy effective recycling
The heat lost will substantially reduce the power consumption of aluminum electrolysis, reduce the energy consumption and environmental pollution of entire industry.Benefit the nation benefit
The people, competitiveness of the enhancing China's aluminium electroloysis industry in world's same industry.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of compound heat utilization power generating systems of aluminium cell, to solve to carry on the back
The problem of being mentioned in scape technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of compound heat utilization power generating system of aluminium cell, by electrolytic cell, cell wall heat exchanger, gas-water heat exchanger and screw rod
Expansion power generation unit, the electrolytic cell are located at below cell wall heat exchanger, and electrolytic cell connects gas-water heat exchanger by smoke exhaust pipe,
Gas-water heat exchanger also passes through cell wall heat exchanger water inlet pipe connection cell wall heat exchanger, and cell wall heat exchanger also passes through middle pressure steam pipe
Connecting screw expansion power generation unit is connected between screw expansion generating set and steam exhaust-organic working medium heat exchanger by steam exhaust pipe
It connects, steam exhaust-organic working medium heat exchanger also passes through working substance steam pipe connection ORC screw expansion generating set, the power generation of ORC screw expansion
It is connected between unit and working medium condenser by working medium steam exhaust pipe, working medium condenser also passes through working medium and returns liquid pump and working medium time liquid
Pipe connects steam exhaust-organic working medium heat exchanger, and steam exhaust-organic working medium heat exchanger also passes through recirculated water cooling water pipe and demineralized water water supply pipe
Demineralized water is conveyed to gas-water heat exchanger.
As a preferred solution of the present invention: the screw expansion generating set and steam exhaust-organic working medium heat exchanger are and factory
Area's distribution line is connected.
As a preferred solution of the present invention: the working medium condenser, circulating water heating water pipe, circulating water cooling tower, recirculated water
Water-cooling circulating system is formed by recirculated water cooling water pipe between pump.
Compared with prior art, the beneficial effects of the present invention are: the compound heat utilization power generating system of aluminium cell of the present invention
Recycling power generation is carried out using the fume afterheat, the pot shell wall dispersed heat that generate in aluminium electrolysis process.It is raw to substantially reduce aluminium electroloysis
The power consumption of production reduces the energy consumption and environmental pollution of entire industry.It benefits the nation and the people, enhancing China's aluminium electroloysis industry is same in the world
The competitiveness of industry.
Detailed description of the invention
Fig. 1 is whole schematic diagram of the invention.
In figure: 1- electrolytic cell, 2- cell wall heat exchanger, 3- smoke exhaust pipe, 4- gas-water heat exchanger, 5- cell wall heat exchanger, in 6-
Press steam pipe, 7- screw expansion generating set, 8- steam exhaust pipe, 9- steam exhaust-organic working medium heat exchanger, 10- demineralized water water supply pipe,
11- working substance steam pipe, 12-ORC screw expansion generating set, 13- working medium steam exhaust pipe, 14- working medium condenser, 15- working medium return liquid
Pump, 16- working medium liquid back pipe, 17- circulating water heating water pipe, 18- circulating water cooling tower, 19- water circulating pump, 20- recirculated water cooling water pipe,
21- condensate pump, 22- plant area distribution line.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of compound heat utilization power generating system of aluminium cell, by electrolytic cell 1, cell wall heat exchanger 2, cigarette
Air-water heat exchanger 4 and screw expansion generating set 7, the electrolytic cell 1 are located at 2 lower section of cell wall heat exchanger, and electrolytic cell 1 passes through row
Smoke pipe 3 connects gas-water heat exchanger 4, and gas-water heat exchanger 4 also connects cell wall heat exchanger 2 by cell wall heat exchanger water inlet pipe 5,
Also by 6 connecting screw expansion power generation unit 7 of middle pressure steam pipe, screw expansion generating set 7 has cell wall heat exchanger 2 with steam exhaust-
It is connected between machine working fluid heat exchanger 9 by steam exhaust pipe 8, steam exhaust-organic working medium heat exchanger 9 is also connected by working substance steam pipe 11
ORC screw expansion generating set 12 passes through 13 phase of working medium steam exhaust pipe between ORC screw expansion generating set 12 and working medium condenser
Connection, working medium condenser 14 also returns liquid pump 15 by working medium and working medium liquid back pipe 16 connects steam exhaust-organic working medium heat exchanger 9, weary
Vapour-organic working medium heat exchanger also passes through recirculated water cooling water pipe 21 and demineralized water water supply pipe 10 and conveys desalination to gas-water heat exchanger 4
Water.Screw expansion generating set 7 and steam exhaust-organic working medium heat exchanger are connected with plant area distribution line 22.Working medium condenser
14, circulating water heating water pipe 17, circulating water cooling tower 18, water cooling formed by recirculated water cooling water pipe 20 between water circulating pump 19 follow
Loop system.
The working principle of the invention is: 100 DEG C or more of the flue gas generated in electrolytic cell production process is arranged by electrolytic cell
3 gas-water heat exchanger (water preheater) 4 of smoke pipe, and the demineralized water from demineralized water water supply pipe carry out heat exchange.To demineralized water into
Row preheating, the demineralized water after preheating enter cell wall heat exchanger (steam generator) 2, flue gas by cell wall heat exchanger water inlet pipe 5
Atmosphere demineralized water is discharged into after into flue gas purification system filtering to be absorbed in cell wall heat exchanger 2 from the production of electrolytic cell Inner electrolysis aluminium
After the heat generated in the process, vaporization.Middle pressure steam is formed, steam type is entered by middle pressure steam pipe 6 after largely collecting
Screw expansion unit acting 7 rotary electrification of lead-screw expansion power generation unit, institute's electricity enter plant area's distribution line 22, generate electricity
Steam exhaust after acting carries out heat exchange with organic working medium into the hot device 9. of steam exhaust-organic working medium by steam exhaust pipe 8.After loss of heat
It after steam exhaust is condensed into water, is pressurizeed by condensate pump 21, returns gas-water heat exchanger (water preheater) 4. and heated, entered
Another working cycles；Organic working medium is formed with pressure organic working medium and steams in the hot 4 internal heat generation vaporization of device of steam exhaust-organic working medium
Vapour.By working substance steam pipe 11, do work into ORC (organic working medium) screw expansion generating set 12, lead-screw expansion power generation
Unit rotary electrification, formation steam exhaust is weary by working medium after institute's electricity likewise enters the acting of 22. organic working medium of plant area's distribution line
Steam pipe 13 is condensed into the organic working medium of liquid with the heat exchange of condensation cycle water into working medium condenser (working medium-water heat exchanger) 14
Liquid pump 15 is returned by working medium, steam exhaust-organic working medium heat exchanger 9 is returned by working medium liquid back pipe 16, again heating vaporization, enter
Next working cycles；Through circulating water heating water pipe 17 after the heat exchange of condensation cycle water, circulating water cooling tower 18, after radiating and cooling, warp
Water circulating pump 19 squeezes into recirculated water cooling water pipe 20 and enters the next working cycles of working medium condenser pipe progress.
Claims (3)
1. a kind of compound heat utilization power generating system of aluminium cell is exchanged heat by electrolytic cell (1), cell wall heat exchanger (2), gas-water
Device (4) and screw expansion generating set (7), which is characterized in that the electrolytic cell (1) is located at below cell wall heat exchanger (2), electrolysis
Slot (1) also passes through cell wall heat exchanger water inlet pipe by smoke exhaust pipe (3) connection gas-water heat exchanger (4), gas-water heat exchanger (4)
(5) cell wall heat exchanger (2) being connected, cell wall heat exchanger (2) also passes through middle pressure steam pipe (6) connecting screw expansion power generation unit (7),
It is connected between screw expansion generating set (7) and steam exhaust-organic working medium heat exchanger (9) by steam exhaust pipe (8), steam exhaust-is organic
Working fluid heat exchanger (9) also passes through working substance steam pipe (11) connection ORC screw expansion generating set (12), the power generation of ORC screw expansion
It is connected between unit (12) and working medium condenser by working medium steam exhaust pipe (13), working medium condenser (14) also returns liquid by working medium
It pumps (15) and working medium liquid back pipe (16) connects steam exhaust-organic working medium heat exchanger (9), steam exhaust-organic working medium heat exchanger, which also passes through, to follow
Ring water cooling water pipe (21) and demineralized water water supply pipe (10) give gas-water heat exchanger (4) conveying demineralized water.
2. the compound heat utilization power generating system of a kind of aluminium cell according to claim 1, which is characterized in that the screw rod
Expansion power generation unit (7) and steam exhaust-organic working medium heat exchanger are connected with plant area's distribution line (22).
3. the compound heat utilization power generating system of a kind of aluminium cell according to claim 1, which is characterized in that the working medium
Condenser (14), circulating water cooling tower (18), passes through recirculated water cooling water pipe between water circulating pump (19) at circulating water heating water pipe (17)
(20) water-cooling circulating system is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810211842.XA CN110159376A (en) | 2018-03-15 | 2018-03-15 | A kind of compound heat utilization power generating system of aluminium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810211842.XA CN110159376A (en) | 2018-03-15 | 2018-03-15 | A kind of compound heat utilization power generating system of aluminium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110159376A true CN110159376A (en) | 2019-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810211842.XA Pending CN110159376A (en) | 2018-03-15 | 2018-03-15 | A kind of compound heat utilization power generating system of aluminium cell |
Country Status (1)
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| CN (1) | CN110159376A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042887A (en) * | 2019-12-03 | 2020-04-21 | 深圳大学 | Power generation system for recovering waste heat of electrolytic cell |
| CN111042886A (en) * | 2019-12-03 | 2020-04-21 | 深圳大学 | Power generation system for recovering waste heat of electrolytic cell |
| CN111396164A (en) * | 2020-03-18 | 2020-07-10 | 深圳大学 | System and method for recycling waste heat of side wall of electrolytic aluminum cell |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2237492A5 (en) * | 1973-07-13 | 1975-02-07 | Electricite De France | Generation of electricity using hydrogen as fuel - produces steam from combustion of hydrogen and pure oxygen |
| US20090000299A1 (en) * | 2007-06-29 | 2009-01-01 | General Electric Company | System and method for recovering waste heat |
| CN101978139A (en) * | 2008-02-07 | 2011-02-16 | 城市大学 | Generating power from medium temperature heat sources |
| CN102287245A (en) * | 2011-07-26 | 2011-12-21 | 北京世纪源博科技有限责任公司 | Aluminum electrolysis cell flue gas waste heat generation system with flue gas separation device |
| CN102720552A (en) * | 2012-05-07 | 2012-10-10 | 任放 | Waste heat recovery system of low temperature position industrial fluid |
| CN103277147A (en) * | 2013-05-24 | 2013-09-04 | 成都昊特新能源技术股份有限公司 | Dual-power ORC power generation system and power generation method of same |
-
2018
- 2018-03-15 CN CN201810211842.XA patent/CN110159376A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2237492A5 (en) * | 1973-07-13 | 1975-02-07 | Electricite De France | Generation of electricity using hydrogen as fuel - produces steam from combustion of hydrogen and pure oxygen |
| US20090000299A1 (en) * | 2007-06-29 | 2009-01-01 | General Electric Company | System and method for recovering waste heat |
| CN101978139A (en) * | 2008-02-07 | 2011-02-16 | 城市大学 | Generating power from medium temperature heat sources |
| CN102287245A (en) * | 2011-07-26 | 2011-12-21 | 北京世纪源博科技有限责任公司 | Aluminum electrolysis cell flue gas waste heat generation system with flue gas separation device |
| CN102720552A (en) * | 2012-05-07 | 2012-10-10 | 任放 | Waste heat recovery system of low temperature position industrial fluid |
| CN103277147A (en) * | 2013-05-24 | 2013-09-04 | 成都昊特新能源技术股份有限公司 | Dual-power ORC power generation system and power generation method of same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042887A (en) * | 2019-12-03 | 2020-04-21 | 深圳大学 | Power generation system for recovering waste heat of electrolytic cell |
| CN111042886A (en) * | 2019-12-03 | 2020-04-21 | 深圳大学 | Power generation system for recovering waste heat of electrolytic cell |
| CN111396164A (en) * | 2020-03-18 | 2020-07-10 | 深圳大学 | System and method for recycling waste heat of side wall of electrolytic aluminum cell |
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Application publication date: 20190823 |