CN101240432B - Liquid medium aluminum electrolysis bath residual heat reclaiming device and reclaiming method thereof - Google Patents
Liquid medium aluminum electrolysis bath residual heat reclaiming device and reclaiming method thereof Download PDFInfo
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- CN101240432B CN101240432B CN2008100492937A CN200810049293A CN101240432B CN 101240432 B CN101240432 B CN 101240432B CN 2008100492937 A CN2008100492937 A CN 2008100492937A CN 200810049293 A CN200810049293 A CN 200810049293A CN 101240432 B CN101240432 B CN 101240432B
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Abstract
The invention discloses a waste heat recovery device for a liquid medium aluminum electrobath and the recovery method thereof. The device includes a thermal container, the back wall plate of the container is fixed on the radiating steel plate on the side of the aluminum electrobath by pressing a bolt, the front wall plate is equipped with a hydraulic spray nozzle of a spray system, the front wall plate on the upper part of the hydraulic spray nozzle is equipped with a vapor outlet; the back cavity plate of the thermal container is equipped with a temperature sensor, both the temperature sensor and the liquid control valve of the spray system are connected with a balance controller of a control cabinet. The waster heat produced by the electrobath is transferred into the device, the heating surface is liquid sprayed to generate high-temperature high-pressure vapor which is transferred to a heating system or dynamo by a vapor outlet. Constant and adjustable temperature of the side of aluminum electrobath is realized, waste heat of the electrobath is effectively transferred and used, the cost is low, the invention can be applied to recovery of waste heat of various types of aluminum electrobath and high-temperature case, as well as has good social and economical benefit.
Description
Technical field:
The present invention relates to a kind of electrolyzer waste-heat recovery device, particularly relate to a kind of liquid medium aluminum electrolysis bath waste-heat recovery device and recovery method thereof.
Background technology:
Current electrolysis aluminium production energy utilization rate is less than 50%, and electric energy is produced the electrolytic aluminum except that a part is used for electrolytic reaction, and other form with heat leakage over half loses.The heat of loss is dispersed into peripheral space by the different sites of electrolyzer, wherein the upper lateral part calorific loss reaches 35% of loss amount, and reaching kw. more than 100 not only wastes electric energy, and makes operating ambient temperature higher, can reach 80 degrees centigrade more nearby apart from pot shell, aggravating working environment.
The cell sidewall temperature is when ordinary production, need to keep a stable scope, require sidepiece that good heat radiation will be arranged, so that heat unnecessary in the electrolyzer is lost, traditional electrolyzer is in order to lower the temperature to cell wall, and the electrolytic bath shell structure is provided with a large amount of radiator element, by the natural wind cooling, complex structure, and temperature changes greatly with electric tank working situation and outside temperature, has a strong impact on the working efficiency of electrolyzer.
Summary of the invention:
The objective of the invention is to overcome the defective of prior art, provide a kind of simple in structure, can realize that cell sidewall temperature weighing apparatus is fixed and adjustable, and make the unnecessary heat of electrolyzer can efficient transfer, and liquid medium aluminum electrolysis bath waste-heat recovery device and the recovery method thereof used.
Technical scheme of the present invention is:
A kind of liquid medium aluminum electrolysis bath waste-heat recovery device, contain hot vessel, described hot vessel is a dead front type metal shell, thereafter wallboard is fixed on the heat radiation steel plate of aluminum cell side by push bolt, the spraying nozzle of spray equipment is installed on its front panel, the front panel of spraying nozzle top is provided with vapour outlet, and, on the back cavity plate of described hot vessel temperature sensor is installed also, the liquid control valve of described temperature sensor and spray equipment all is connected with the balance controller of housing.
The outside of described temperature sensor probe is provided with protective guard.The spraying nozzle that is provided with on the described hot vessel front panel is one or more.The balance controller of described housing contains temperature conditioning unit, command unit and actuator unit.The exposed surface of described hot vessel is provided with thermal insulation layer.
Perhaps, the back cavity plate of described hot vessel is provided with opening, and temperature sensor is installed on the heat radiation steel plate of aluminum cell side by this opening.
Utilize described liquid medium aluminum electrolysis bath waste-heat recovery device to carry out the method for waste heat recovery, the waste heat that electrolyzer is produced is delivered in the described liquid medium aluminum electrolysis bath waste-heat recovery device, then liquid medium aluminum electrolysis bath waste-heat recovery device heating surface is carried out liquid spraying, used liquid can adopt water or other low-boiling point liquid, liquid spraying is behind heating surface, produce high temperature and high pressure steam, be sent to heating system or generating steam turbine by vapour outlet.
Positive beneficial effect of the present invention:
1, liquid medium aluminum electrolysis bath exhaust heat recovering method of the present invention can reclaim a large amount of energy, and the 5-10% of recyclable electrolyzer dissipated heat is equivalent to ton aluminium and economizes on electricity more than the 500-1000 degree.
2, liquid medium aluminum electrolysis bath waste-heat recovery device of the present invention has obviously been simplified the pot shell structure, and installation is convenient; Reduce simultaneously the operating environment temperature significantly, improve the life-span of workman's efficiency and mechanical means.
3, the present invention stablizes the electrolyzer manufacturing parameter, makes stove group remain good order and condition, improves groove production efficiency; And the electrolyzer thermal parameter is stable, improves bath life.
4, the present invention is applied widely, can be applicable to the recovery of the aluminium cell and the high temperature housing waste heat of various models, and cost is lower, is easy to promote, and has good society and economic benefit.
Description of drawings:
Fig. 1 is the structural representation of liquid medium aluminum electrolysis bath waste-heat recovery device;
Fig. 2 is the right view of liquid medium aluminum electrolysis bath waste-heat recovery device shown in Figure 1.
Embodiment:
Embodiment one: referring to Fig. 1 and Fig. 2, and among the figure, 1-pot shell upper edge plate, the 2-thermal insulation layer, 3-hot vessel, 4-loam cake standing bolt, the 5-vapour outlet, 6-sprays liquid-inlet, 7-mouth spray pipe connecting, the total inlet pipe of 8-liquid, 9-spraying nozzle, 10-liquid-inlet joint, 11-liquid inlet pipe, 12-temperature sensor, 13-hot vessel and pot shell push bolt, 14-transmitter line, 15-liquid inlet pipe joint, 16-housing liquid-inlet, 17-housing temperature conditioning unit, 18-housing command unit, 19-housing actuator unit, 20-groove liner, high-temp liquid in the 21-groove, 22-bottom land negative electrode, 23-cathode collector bar, 24-bottom land thermal insulation layer, 25-pot shell bracing frame, 26-cell body buttress, 27-highly pressurised liquid mist, 28-pot shell bassinet stand.
The hot vessel 3 of liquid medium aluminum electrolysis bath waste-heat recovery device is a dead front type metal shell; thereafter wallboard is fixed on the heat radiation steel plate of aluminum cell side by push bolt 13; the spraying nozzle 9 of spray equipment is installed on its front panel; spraying nozzle 9 is one or more (among the figure being three); the front panel of spraying nozzle 9 tops is provided with vapour outlet 5; and; the back cavity plate of hot vessel 3 is provided with opening; temperature sensor 12 is installed in by this opening on the heat radiation steel plate of aluminum cell side, and the outside of temperature sensor (8) probe is provided with protective guard.The liquid control valve of temperature sensor 12 and spray equipment all is connected with the balance controller of housing.The balance controller of housing contains temperature conditioning unit 17, command unit 18 and actuator unit 19.The exposed surface of hot vessel 3 is provided with thermal insulation layer 2.
More than the aluminium cell wall temperature is elevated to 350 degree when (can set), temperature sensor 12 passes to housing with this signal, behind temperature conditioning unit 17 collection analysises of temperature signal by housing, assign instruction by command unit 18, actuator unit 19 makes liquid control valve open for some time (can set), spraying nozzle 9 ejection highly pressurised liquid mists 27, make the cell wall cooling, in addition, highly pressurised liquid mist 27 is sprayed onto on the wallboard that is heated of hot vessel 3, generation has the hot gas of certain temperature and pressure, is input to heating system or low-temperature electricity-generating boiler by vapour outlet 5.When the cell wall temperature drops to normal temps (according to the electrolytic process parameter setting), stop jetting liquid.Liquid is water, also can be other low-boiling point liquids, in order to simplify the internal structure of an organization, and can a plurality of hot vessel 3 shared Controlling System (housing).Aluminium cell is existing common technique, and its concrete structure does not describe in detail one by one.
Embodiment two: present embodiment and embodiment one are basic identical, and something in common does not repeat, and difference is: temperature sensor is installed on the squab panel of hot vessel, does not directly contact with cell wall.
Claims (6)
1. liquid medium aluminum electrolysis bath waste-heat recovery device, contain hot vessel (3), it is characterized in that: described hot vessel (3) is a dead front type metal shell, thereafter wallboard is fixed on the heat radiation steel plate of aluminum cell side by push bolt (13), the spraying nozzle (9) of spray equipment is installed on its front panel, the front panel of spraying nozzle (9) top is provided with vapour outlet (5), and, temperature sensor (12) also is installed on the squab panel of described hot vessel (3), and the liquid control valve of described temperature sensor (12) and spray equipment all is connected with the balance controller of housing.
2. liquid medium aluminum electrolysis bath waste-heat recovery device according to claim 1 is characterized in that: the outside of described temperature sensor (12) probe is provided with protective guard.
3. liquid medium aluminum electrolysis bath waste-heat recovery device according to claim 1 is characterized in that: the spraying nozzle (9) that is provided with on described hot vessel (3) front panel is more than one.
4. liquid medium aluminum electrolysis bath waste-heat recovery device according to claim 1 is characterized in that: the balance controller of described housing contains temperature conditioning unit (17), command unit (18) and actuator unit (19).
5. according to the arbitrary described liquid medium aluminum electrolysis bath waste-heat recovery device of claim 1～4, it is characterized in that: the exposed surface of described hot vessel (3) is provided with thermal insulation layer (2).
6. the method for utilizing each described liquid medium aluminum electrolysis bath waste-heat recovery device of claim 1～4 to carry out waste heat recovery, it is characterized in that: the waste heat that electrolyzer is produced is delivered in the described liquid medium aluminum electrolysis bath waste-heat recovery device, then liquid medium aluminum electrolysis bath waste-heat recovery device heating surface is carried out liquid spraying, used liquid can adopt water or other low-boiling point liquid, liquid spraying is behind heating surface, produce high temperature and high pressure steam, be sent to heating system or generating steam turbine by vapour outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100492937A CN101240432B (en) | 2008-03-03 | 2008-03-03 | Liquid medium aluminum electrolysis bath residual heat reclaiming device and reclaiming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100492937A CN101240432B (en) | 2008-03-03 | 2008-03-03 | Liquid medium aluminum electrolysis bath residual heat reclaiming device and reclaiming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101240432A CN101240432A (en) | 2008-08-13 |
| CN101240432B true CN101240432B (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100492937A Expired - Fee Related CN101240432B (en) | 2008-03-03 | 2008-03-03 | Liquid medium aluminum electrolysis bath residual heat reclaiming device and reclaiming method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO337186B1 (en) * | 2013-05-06 | 2016-02-08 | Goodtech Recovery Tech As | Heating pipe assembly with return lines |
| CN105220177B (en) * | 2014-06-30 | 2017-12-08 | 沈阳铝镁设计研究院有限公司 | Aluminium cell forced ventilation residual heat using device and Application way |
| CN106123632B (en) * | 2016-08-23 | 2018-05-11 | 昆明理工大学 | A kind of method to be generated electricity using residual heat of aluminum reduction cell |
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2008
- 2008-03-03 CN CN2008100492937A patent/CN101240432B/en not_active Expired - Fee Related
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| CN101240432A (en) | 2008-08-13 |
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Granted publication date: 20100714 Termination date: 20110303 |