CN109631012A - Heat-conducting oil heat storage type electric heating system - Google Patents
Heat-conducting oil heat storage type electric heating system Download PDFInfo
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- CN109631012A CN109631012A CN201910014633.0A CN201910014633A CN109631012A CN 109631012 A CN109631012 A CN 109631012A CN 201910014633 A CN201910014633 A CN 201910014633A CN 109631012 A CN109631012 A CN 109631012A
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- Prior art keywords
- oil
- heat
- heat exchanger
- condutive
- heating system
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- 238000005485 electric heating Methods 0.000 title claims abstract description 19
- 238000005338 heat storage Methods 0.000 title abstract 2
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000007670 refining Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 238000010923 batch production Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 206010021036 Hyponatraemia Diseases 0.000 description 1
- 208000034906 Medical device complication Diseases 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009847 ladle furnace Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/16—Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil
- F22G1/165—Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil by electricity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a heat-conducting oil heat-storage type electric heating system, which comprises: a heat transfer oil heat exchanger and a hot oil tank; an electric heater is arranged in the hot oil tank, and the hot oil tank is connected with the heat-conducting oil heat exchanger through a pipeline; the electric heater heats the heat conducting oil in the hot oil groove, the heated heat conducting oil is conveyed to the heat conducting oil heat exchanger, and the saturated steam entering the heat conducting oil heat exchanger is heated to be superheated steam. The system of the invention can adapt to the intermittent production mode of the refining furnace, further improve the energy utilization efficiency and further simplify the system.
Description
Technical field
The present invention relates to metallurgical technologies, will be specifically a kind of conduction oil heat storing type electric heating systems.
Background technique
Make steel the smelting furnaces such as refining furnace production method be it is intermittent, i.e., smelting furnace is fallen before and after smelting production
Tank, the again warming-up exercises such as charging.During smelting production, with the variation of rate of driving, needing will using equipment such as vacuum pumps
Negative pressure state is pumped into the molten steel side of ladle furnace, so that the gas in molten steel is overflowed molten steel, to obtain pure molten steel.It smelts
Production duration is generally dozens of minutes, and warming-up exercise duration is generally also dozens of minutes.Due to this intermittent production method,
The production of vacuum pump is also interval.
Vacuum pump has water ring vacuum pump, vapor jet vacuum pump, oil-sealed rotary pump etc. a variety of, and vapor jet vacuum is pumped because of it
Structure is simple, it is stable and reliable for performance in steel and iron industry using very extensive.Vapor jet vacuum pump is when being flowed using fluid
Gas dynamics that static energy and kinetic energy are mutually converted form vacuum.Water vapour with certain pressure passes through Lavalle
Reach the velocity of sound when nozzle throat diameter, to nozzle diffusion part when, static energy is all converted to kinetic energy, reaches supersonic speed, while nozzle
Exit formed vacuum, pumped gas under the action of pressure difference, be drawn into that suction chamber and supersonic steam. while mixing
It into Venturi tube, is then discharged with subsonic speed from the diffuser of Venturi tube, while mixed gas velocity gradually decreases, pressure
Power increases, and is then discharged from outlet.Several jet pumps are together in series use, condenser is added between pump and pump to be made to steam
Vapour condensation, can obtain higher vacuum degree.The mass dryness fraction of steam also has larger impact to the performance of vacuum pump, wherein aqueous can draw
Fluctuations of vacuum is played, can not even take out vacuum containing dilutional hyponatremia.Especially Pyatyi pumps, very high to the quality requirements of steam, containing micro-
Amount moisture all may cause the ice berg of nozzle, and vacuum degree when starting level V vacuum pump is caused to decline instead or do not act on.For
Obtain optimal working efficiency, the superheated steam that 5 DEG C~10 DEG C are generally using steam of ejector vacuum pump.
In the prior art, while meeting the production requirement of steel-making refining furnace, vapor jet vacuum pump, for greatest extent
The saturated vapor that ground is generated using converter, electric furnace, the saturated vapor that there are many technology and products to generate converter, electric furnace at present into
Row Overheating Treatment, such as gas type steam superheating, micro- overheat hold over system, electricity overheat, electromagnetism overheat, fused salt accumulation of heat overheat.
In existing electric heating scheme, the batch production mode of refining furnace is not considered, using the mode of resistance heating.
When refining furnace vapour, high temperature resistance is had the steam blowing of certain speed cooling.When deactivating refining furnace moment, due to steam
Flow velocity nearly zero, high temperature resistance cannot cool down, and the long period is in the condition of high temperature, the easy physical damage of resistance.Due to refining furnace
Production model be it is intermittent, lead to the frequent dry combustion method of high temperature resistance.Using resistance heating mode when, due to not considering the product of steam
Matter, when steam is absolute dry saturated steam, high temperature resistance outer surface is only contacted with water vapour.When carrying operative liquid water, due to
Contain hardness in liquid water, liquid water is evaporated on the surface of high temperature resistance, and hardness etc. remains in the surface of high temperature resistance, when long
Between using rear resistive surface fouling it is serious, heat-transfer effect is bad, and resistance service life is short, and maintenance amount is big.
Gas type steam superheating device in the prior art does not consider to discharge pollution of the flue gas to environment, uses burning
The mode of flue gas is discharged afterwards.When the pollutants such as the sulfureous in flue gas of discharge, nitre are more, need to take further fume treatment system
System will lead to device complication, reduce the thermal efficiency of system, the thermal efficiency is not high.
In the transformation heat accumulator system of the micro- overheat of band in the prior art, both do not considered that storage heater filled hot steam pressure, temperature
The fluctuation of degree, does not consider the operating condition of storage heater heat release end yet, is precisely controlled the outlet vapor degree of superheat so being not achieved, or not
Micro- superheated steam can be generated, is not able to satisfy the needs of designated user.
In fused salt heat accumulating type steam superheating system in the prior art, using the heat exchanger form of immersion, do not consider
The accurate adjusting of superheat steam temperature, is difficult to realize when superheat steam temperature needs to adjust in a short time, and due to molten
The comparison of ingredients of salt is complicated, and part may be contained in fused salt can be in the impurity salt of heated pipe surface formation thermal resistance dirt, such as calcium carbonate
Deng, and then cause the complication of system or influence the continuous use service life of system.
Summary of the invention
To carry out Overheating Treatment to the steam that production method is intermittent smelting furnace, the present invention provides a kind of conduction oil storage
Hot type electric heating system, comprising: heat-condutive oil heat exchanger, hot oil slot；
The heat-condutive oil heat exchanger is equipped with saturated vapor entrance, superheated steam exports, and electric heating is equipped in the hot oil slot
Device, the hot oil slot are connected with heat-condutive oil heat exchanger by pipeline；
The electric heater heats the conduction oil in hot oil slot, and the conduction oil after heating is delivered to conduction oil heat exchange
In device, the saturated vapor entered in heat-condutive oil heat exchanger is heated up as superheated steam.
In the embodiment of the present invention, system further include: oil circulating pump is connected with the heat-condutive oil heat exchanger, to realize
The circulation of conduction oil in hot oil slot and heat-condutive oil heat exchanger, the function of the flow control heat-condutive oil heat exchanger by adjusting circulating pump
Rate.
In the embodiment of the present invention, system further include: spare oil circulating pump is connected with the heat-condutive oil heat exchanger.
In the embodiment of the present invention, the system further include: oil storage tank is connected, for realizing heat with the hot oil slot
The injection and discharge of conduction oil in oil groove.
In the embodiment of the present invention, the heat-condutive oil heat exchanger is tube-sheet heat exchanger.
In the embodiment of the present invention, the electric heater is electrical immersion heater.
In the embodiment of the present invention, the system further include: control device is connected with the oil circulating pump, with control
The flow of oil circulating pump is to control the power of heat-condutive oil heat exchanger.
System of the invention can adapt to the batch production mode of refining furnace, further increase efficiency of energy utilization, into
One step simplifies system.
For above and other objects, features and advantages of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate institute's accompanying drawings, it is described in detail below.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the block diagram of conduction oil heat storing type electric heating system disclosed by the invention；
Fig. 2 is a kind of conduction oil heat-lag time schematic diagram of the present embodiment of the present invention.
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.
The present invention provides a kind of conduction oil heat storing type electric heating system, as shown in Figure 1, comprising: heat-condutive oil heat exchanger 101,
Hot oil slot 102；Heat-condutive oil heat exchanger 101 is equipped with saturated vapor entrance, superheated steam exports；Electric heating is equipped in hot oil slot 102
Device, to heat to the conduction oil in hot oil slot 102, hot oil slot 102 is connected with heat-condutive oil heat exchanger 101 by pipeline,
It is transmitted with the conduction oil realized in hot oil slot 102 and heat-condutive oil heat exchanger 101.Saturated vapor enters thermally conductive from saturated vapor entrance
Oil heat exchanger 101, heat-condutive oil heat exchanger 101 heat saturated vapor, and being heated up is qualified low-pressure superheated steam, real
Low-pressure saturated steam is now superheated to the temperature of needs.
This programme conduction oil heat storing type electric heating system bring steel-making refining furnace, vapor jet vacuum pump technique it is great into
Step.The solution of the present invention can heat for a long time conduction oil with the electric heater of smaller power, pass through the thermally conductive of hot oil slot
Oil stores a large amount of high temperature heat, and heat-condutive oil heat exchanger carries out at overheat saturated vapor using the conduction oil of amount of heat
Reason meets the biggish power demand that the saturated vapor overheat of short time needs, meets batch production to superheated steam
Formula of having a rest demand.
As shown in Fig. 2, for a kind of conduction oil heat-lag time disclosed in the embodiment of the present invention, wherein external
Accumulator outlet saturated vapor after low-pressure steam regulating valve, by saturated vapor entrance enter oil and gas heat exchanger heating be
Qualified low-pressure superheated steam is exported from superheated steam and is discharged.
In the conduction oil heat-lag time of the present embodiment, certain temperature is heated to through electric heater in hot oil slot
Conduction oil through oil circulating pump, be sent to oil and gas heat exchanger, heat up to the saturated vapor in heat-condutive oil heat exchanger, by conduction oil
Hot oil slot is returned after heat release.Oil storage tank and filling pump etc. is arranged in the lower section of hot oil slot, realize the injection of conduction oil, discharge and
Replacement etc..Electric heater in hot oil slot is realized according to the temperature of conduction oil to be automatically controlled.The flow of circulating pump is according to low pressure mistake
The temperature of hot steam, which is realized, to be automatically controlled.Necessary filtering, deflation, oil extraction, measuring instrumentss, adjusting is arranged in thermal conductive oil pipeline system
Equipment etc..The flow of circulating pump is realized according to the temperature of low-pressure superheated steam and is automatically controlled.In the present embodiment, oil circulating pump setting
Two, the using and the reserved.Oil circulating pump can be set to variable frequency adjustment.
In the conduction oil heat-lag time of the present embodiment, the saturated vapor of external accumulator outlet is through low-pressure steam
Enter the heating of oil and gas heat exchanger after regulating valve for qualified low-pressure superheated steam, user is sent in the outlet of Jing Tuzhong superheated steam.This
Invention steam side, band pressure flow are adjusted, steam-water separation, the equipment such as safety relief.Oil and gas heat exchanger can be tube-sheet heat exchanger,
It is oil in pipe, outer pipe is vapour.
Oil storage tank is provided with below hot oil slot, oil storage tank is generally positioned at ground, and filling pump is also disposed on ground.Oil storage
The dischargeable capacity of slot is greater than hot oil slot, and oil storage tank during normal use maintains low oil level.In an embodiment of the present invention, tank truck
Oil hot oil slot can be sent directly by filling pump, oil storage tank can also be sent into.The oil of oil storage tank can also be pumped by oiling
Enter hot oil slot.Hot oil slot is equipped with overflow pipe, discharge pipe, and the oil of hot oil slot can import in oil storage tank.The oil of oil storage tank needs outer
It can use filling pump injection tank truck when fortune.A small amount of Residual oil of low level can be recycled through blowdown gathering tube.Blowdown gathering tube can
With the waste oil for needing to discharge everywhere in recovery system, the use when system needs to empty.Electric heater in hot oil slot is according to leading
The temperature of hot oil, which is realized, to be automatically controlled.Electric heater can be the heater of multiple smaller powers, and can be used simultaneously partially to make
With heating conduction oil for a long time with the electric heater of smaller power.
Technical solution of the present invention has the following beneficial effects:
By using electrically heated mode, the generation of pollutant in production process, the system for simplifying heat source are avoided, letter
Operation is changed.
By using electrically heated mode, the pollutant emission to environment such as gas-fired is avoided.
Medium is done by using conduction oil, using electrical immersion heater, avoids the risk of the frequent dry combustion method of electric heater.
Fused salt matchmaker is avoided using the lesser characteristic of the solubility of salt in conduction oil as medium by using conduction oil
The risk of the heating surface fouling of Jie, guarantees the service life of heat exchanger.
By using conduction oil as medium, using the small characteristic of conduction oil steam pressure, hot oil slot is low pressure or normal pressure
Container simplifies system.
By adjusting hot oil temperature, guarantee the low-pressure superheated steam temperature needed.
By adjusting the flow of oil circulating pump, the low-pressure superheated steam temperature needed is precisely adjusted.Two kinds of adjusting hands are set
Section, ensures the overheat quality of superheated steam: by adjusting hot oil temperature, guaranteeing the low-pressure superheated steam temperature needed；Pass through tune
The flow of oil circulating pump is saved, the low-pressure superheated steam temperature needed is precisely adjusted
Guarantee refining furnace batch production to mistake by keeping biggish hot oil capacity using the hot oil slot of large volume
The needs of hot steam, requirement when reducing superheated steam moment larger flow to electric heater instantaneous power.
The oil temperature in hot oil slot is maintained by electric heater, when guaranteeing Batch Process, steam can be rapidly heated.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (8)
1. a kind of conduction oil heat storing type electric heating system, which is characterized in that the heating system include: heat-condutive oil heat exchanger,
Hot oil slot；
Electric heater is equipped in the hot oil slot, the hot oil slot is connected with heat-condutive oil heat exchanger by pipeline；
The electric heater heats the conduction oil in hot oil slot, and the conduction oil after heating is delivered to heat-condutive oil heat exchanger
In, the saturated vapor entered in heat-condutive oil heat exchanger is heated up as superheated steam.
2. conduction oil heat storing type electric heating system as described in claim 1, which is characterized in that the system further include: follow
Ring oil pump is connected with the heat-condutive oil heat exchanger, to realize the circulation of the conduction oil in hot oil slot and heat-condutive oil heat exchanger,
By the power for adjusting the flow control heat-condutive oil heat exchanger of circulating pump.
3. conduction oil heat storing type electric heating system as claimed in claim 2, which is characterized in that the system further include: standby
With oil circulating pump, it is connected with the heat-condutive oil heat exchanger.
4. conduction oil heat storing type electric heating system as described in claim 1, which is characterized in that the system further include: storage
Oil groove is connected with the hot oil slot, for realizing the injection and discharge of conduction oil in hot oil slot.
5. conduction oil heat storing type electric heating system as described in claim 1, which is characterized in that the heat-condutive oil heat exchanger is
Tube-sheet heat exchanger.
6. conduction oil heat storing type electric heating system as described in claim 1, which is characterized in that the electric heater is submergence
Formula electric heater.
7. conduction oil heat storing type electric heating system as claimed in claim 2, which is characterized in that the system further include: control
Device processed is connected with the oil circulating pump, and the power of heat-condutive oil heat exchanger is controlled with the flow of control loop oil pump.
8. conduction oil heat storing type electric heating system as described in claim 1, which is characterized in that the heat-condutive oil heat exchanger is equipped with
Saturated vapor entrance, superheated steam outlet, the saturated vapor enters heat-condutive oil heat exchanger from saturated vapor entrance, after heating
Superheated steam from superheated steam export be discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910014633.0A CN109631012A (en) | 2019-01-08 | 2019-01-08 | Heat-conducting oil heat storage type electric heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910014633.0A CN109631012A (en) | 2019-01-08 | 2019-01-08 | Heat-conducting oil heat storage type electric heating system |
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| Publication Number | Publication Date |
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| CN109631012A true CN109631012A (en) | 2019-04-16 |
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ID=66058085
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910014633.0A Pending CN109631012A (en) | 2019-01-08 | 2019-01-08 | Heat-conducting oil heat storage type electric heating system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202532422U (en) * | 2012-04-24 | 2012-11-14 | 缪桂道 | Conduction oil-type steam boiler |
| CN104266174A (en) * | 2014-05-22 | 2015-01-07 | 深圳市爱能森设备技术有限公司 | Energy-storage clean energy superheated steam boiler adopting heat conduction oil to transfer heat and method for preparing superheated steam |
| CN104266161A (en) * | 2014-05-23 | 2015-01-07 | 深圳市爱能森设备技术有限公司 | Valley current overheated steam boiler adopting heat conduction oil to transfer heat and method for preparing overheated steam |
| CN209458917U (en) * | 2019-01-08 | 2019-10-01 | 北京京诚科林环保科技有限公司 | Heat-conducting oil heat storage type electric heating system |
-
2019
- 2019-01-08 CN CN201910014633.0A patent/CN109631012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202532422U (en) * | 2012-04-24 | 2012-11-14 | 缪桂道 | Conduction oil-type steam boiler |
| CN104266174A (en) * | 2014-05-22 | 2015-01-07 | 深圳市爱能森设备技术有限公司 | Energy-storage clean energy superheated steam boiler adopting heat conduction oil to transfer heat and method for preparing superheated steam |
| CN104266161A (en) * | 2014-05-23 | 2015-01-07 | 深圳市爱能森设备技术有限公司 | Valley current overheated steam boiler adopting heat conduction oil to transfer heat and method for preparing overheated steam |
| CN209458917U (en) * | 2019-01-08 | 2019-10-01 | 北京京诚科林环保科技有限公司 | Heat-conducting oil heat storage type electric heating system |
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