CN105865227A - Roller type slag cooler using molten salt as cooling medium - Google Patents
Roller type slag cooler using molten salt as cooling medium Download PDFInfo
- Publication number
- CN105865227A CN105865227A CN201610369951.5A CN201610369951A CN105865227A CN 105865227 A CN105865227 A CN 105865227A CN 201610369951 A CN201610369951 A CN 201610369951A CN 105865227 A CN105865227 A CN 105865227A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- roller
- slag
- slag cooler
- wall
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0472—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a roller type slag cooler using molten salt as a cooling medium, which belongs to the field of circulating fluidized bed boilers. The roller type slag cooler comprises a driving mechanism and a roller, wherein the roller is driven to rotate around a center shaft by the driving mechanism, the wall of the roller is formed in a way that a plurality of heat exchange tubes are helically and closely wound along the axial direction of the roller, and the tubes are connected by flat steel, so as to form a membrane type wall; in the roller, a plurality of heat exchange tubes are arranged along the radial direction from the inner wall of the roller, the tubes are connected by flat steel, so as to form a membrane type wall tube panel, and the membrane type wall tube panel is helically wound on the inner wall of the roller along the axial direction of the roller, so as to form a channel; two ring headers are respectively arranged at an inlet and an outlet of the roller and are connected with the heat exchange tubes of the membrane type wall and the heat exchange tubes of the membrane type wall tube panel. The roller type slag cooler has the advantages of low manufacturing cost and high heat recovery efficiency, and recovered heat is favorable for being reused.
Description
Technical field
The invention belongs to CFBB field, particularly for the slag cooler of cooling pan bottom slag.
Background technology
CFB boiler deslagging temperature may be up to more than 860 DEG C, needs slag cooler to cool down lime-ash, in order to lime-ash follow-up
Process and transport, recovery section lime-ash physical sensible heat simultaneously.The slag cooler that CFB unit is equipped with at present is mostly water-cooled cylinder
Slag cooler, roller slag cooler is not easily blocked, it is simple and reliable to run.
Now widely used roller slag cooler is louvered water cooling roller slag cooler.This kind of slag cooler generally uses telescopic,
Logical cooling water between inner core and urceolus.Slag cooler overall heat exchange is to cool down water and the indirect heat exchange of lime-ash, heat exchange in cylinder between sleeve
Ability is more weak, and therefore needed for slag cooler, heat exchange area is relatively big, causes its volume relatively big, and consumptive material increases accordingly, in manufacturing cost
Rise.
It addition, slag cooler is adopted uses water as cooling medium, the high-temperature residual heat of lime-ash is made to have become cooling down the tow taste heat of water,
Heat is the most effectively recycled, and causes the waste of energy.
Summary of the invention
It is an object of the invention to: a kind of roller slag cooler with fused salt as cooling medium, manufacturing cost is lower, heat recovery efficiency
Higher, and reclaim heat be more beneficial for again with.
The object of the invention is realized by following technical proposals:
A kind of roller slag cooler with fused salt as cooling medium, including drive mechanism, and is driven around central shaft by drive mechanism
The cylinder rotated, cylinder barrel is closely coiled to form along cylinder axial screw by some heat exchanger tubes, is connected by band steel between pipe, shape
Become membrane wall barrel；At drums inside, by inner wall of rotary drum, radially arrange some heat exchanger tubes, between pipe by band steel even
Connect, form membrane panel, and membrane panel axially forms conduit at inner wall of rotary drum coiled coil along cylinder；Cylinder import
It is respectively arranged with an annular header with outlet, is connected with the heat exchanger tube of membrane wall barrel and the heat exchanger tube of membrane panel；Cylinder inner membrance
Between adjacent two pitches of the spiral channel that formula wall tube panel is formed, circumferentially spaced on inner wall of rotary drum arrange some longitudinal directions
Baffle plate, longitudinal baffle axially and radially extends along cylinder simultaneously, and also towards peripheral, oblique while court radially extends, tilts
Direction is contrary with cylinder direction of rotation.
As selection, drive mechanism includes the sprocket wheel of wound drum stack shell, and band movable sprocket around central shaft rotation motor and
Its reductor.
As selection, also include the supporting mechanism supporting cylinder.
As selecting further, supporting mechanism includes base, front end bearing, rear end bearing and bracing ring, front and back ends supporting point
Not being located on base and be positioned at cylinder front and rear portions, front and back ends supporting is fixed in bracing ring wound drum stack shell respectively support
On.
As selection, cylinder one end open is slag input end, and other end opening is slag output end, and the slag input end of cylinder is provided with slag feeding device,
The slag output end of cylinder is provided with dust cover and slag notch.
As selection, the two ends of cylinder further respectively have swivel joint.
The main scheme of the aforementioned present invention and each further selection scheme thereof can be with independent assortment to form multiple schemes, and being the present invention can
The scheme using and claiming；And the present invention, (each non conflicting selection) select between and and other select between can also
Independent assortment.Those skilled in the art can understand there be multiple group according to prior art and common knowledge after understanding the present invention program
Close, be the claimed technical scheme of the present invention, do not do at this exhaustive.
The course of work is: the present invention is a kind of roller slag cooler with fused salt as cooling medium, hinge structure, not only will pass
Thermal medium is replaced with fused salt by water, has also made total innovation in the structure of slag cooler simultaneously.
The operating temperature range of fused salt typically at 220 DEG C-600 DEG C, its stable in properties, and working at ambient pressure, utilize fused salt to inhale
Receive the heat of high-temperature ash, maintain the high-grade of heat, can effectively again with, such as subsequent heat boiler one/
Secondary Air, improves hot blast temperature, thus plays the effect reducing coal consumption, improving boiler efficiency.
This patent uses coil membrane wall, to reduce the pipe radical in parallel of fused salt circulation, thus reduces flow area
Long-pending, it is ensured that fused salt flow velocity.
On the other hand, this patent inner barrel arranges the little tube panel of membrane wall, and working medium uses fused salt, and heat transfer temperature difference reduces, and is not increasing
Under conditions of big equipment volume, it is internally formed more heating surface at roller slag cooler, to ensure enough heat exchange amounts.
Additionally, the spiral channel that little tube panel is formed can also become the lime-ash path along cylinder axially-movable, play promotion lime-ash and exist
The effect transported in cylinder.
Between adjacent two pitch of spiral channel, longitudinal baffle plate can be arranged, play lime-ash in cylinder rotation process
Kick up to strengthen the effect of heat exchange.
In all heat exchanger tubes, heat transferring medium is fused salt.
Beneficial effects of the present invention: use this to design, slag cooler exchange capability of heat is strengthened, and cold slag efficiency is improved, same
Under the conditions of the quantity of slag of sample, heat-exchange temperature, required heating surface area can be reduced, thus reduce consumptive material, reduce manufacturing cost.With
Time, use fused salt effectively can be reclaimed by high-temperature molten salt as heat transferring medium, the heat of high temperature bottom slag, keep the high-grade of energy,
This heat can effectively again with, such as heating one/Secondary Air, hot blast temperature can be improved, thus improve boiler efficiency,
Reduce coal consumption.
Accompanying drawing explanation
Fig. 1 is the facade structures schematic diagram of the embodiment of the present invention；
Fig. 2 is the cross-sectional configuration schematic diagram of the embodiment of the present invention；
Wherein 1-swivel joint, 2-end cap, 3-dust cover and slag notch, 4-annular header, 5-connection member, 6-slag input fills
Put, 7-base, end bearing after 8-, 9-sprocket wheel, 10-reductor, 11-motor, end bearing before 12-, 13-barrel spiral
Coiling heat exchanger tube, 14-inner core membrane wall little tube panel heat exchanger tube, 15-longitudinal baffle, 16-support ring, 17-barrel coiled coil
Heat exchanger tube band steel, 18-inner core membrane wall little tube panel band steel.
Detailed description of the invention
Following non-limiting examples is used for the present invention is described.
With reference to Fig. 1, shown in 2, a kind of roller slag cooler with fused salt as cooling medium, including drive mechanism, and by driving
Motivation structure drives the cylinder rotated around central shaft, also includes the supporting mechanism supporting cylinder.Cylinder one end open is slag input end,
Other end opening is slag output end, and the slag input end of cylinder is provided with slag feeding device 6, and the slag output end of cylinder is provided with dust cover and slag notch 3.
Cylinder barrel is closely coiled to form along cylinder axial screw by some heat exchanger tubes (barrel coiled coil heat exchanger tube 13), between pipe by
Band steel (barrel coiled coil heat exchanger tube band steel 17) connects, and forms membrane wall barrel；At drums inside, open inner wall of rotary drum
Beginning radially to arrange some heat exchanger tubes (inner core membrane wall little tube panel heat exchanger tube 14), between pipe, by band steel, (inner core membrane wall is little
Tube panel band steel 18) connect, form membrane panel, and membrane panel is axially formed at inner wall of rotary drum coiled coil along cylinder
Conduit；Cylinder inlet and outlet is respectively arranged with an annular header 4, with heat exchanger tube (the barrel coiled coil heat exchanger tube of membrane wall barrel
13) and membrane panel heat exchanger tube (inner core membrane wall little tube panel heat exchanger tube 14) connect；In cylinder, membrane panel is formed
Spiral channel adjacent two pitches between, circumferentially spaced on inner wall of rotary drum arrange some longitudinal baffles 15, longitudinally
Baffle plate 15 axially and radially extends along cylinder simultaneously, and also towards peripheral, oblique, incline direction and rolling while court radially extends
Cylinder direction of rotation contrary (seeing Fig. 2, longitudinal baffle 15 circumferentially counterclockwise tilts, and cylinder is rotated clockwise).
As selection, as shown in this embodiment, drive mechanism includes the sprocket wheel 9 of wound drum stack shell, and band movable sprocket 9 is around center
The motor 11 of axle rotation and reductor 10 thereof.Supporting mechanism includes base 7, front end bearing 12, rear end bearing 8 and supports
Circle 16, front and back ends supporting 12,8 is respectively arranged on base 7 and is positioned at cylinder front and rear portions, bracing ring 16 wound drum cylinder
Body respectively support are fixed in front and back ends supporting 12,8.The two ends of cylinder further respectively have swivel joint 1.
Specifically, as example, a kind of roller slag cooler structure with fused salt as cooling medium, critical piece includes: 1-
Swivel joint, 2-end cap, 3-dust cover and slag notch, 4-annular header, 5-connection member, 6-slag feeding device, 7-base,
End bearing after 8-, 9-sprocket wheel, 10-reductor, 11-generator, end bearing after 12-, 13-barrel coiled coil heat exchanger tube,
14-inner core membrane wall little tube panel heat exchanger tube, 15-longitudinal baffle, 16-support ring, 17-barrel coiled coil heat exchanger tube band steel,
18-inner core membrane wall little tube panel band steel.
Cylinder wall is formed by many heat exchanger tubes (barrel coiled coil heat exchanger tube 13) coiled coil, with band steel (cylinder between adjacent tubes
Wall coiled coil heat exchanger tube band steel 17) connect；If pipe number is more, then can be grouped in cylinder import, be evenly distributed on rolling
Cylinder import circumference on, then carry out compact disc around.
Drums inside, starts to arrange many heat exchanger tubes (inner core membrane wall little tube panel heat exchanger tube along cylinder radial direction from inner tube wall
14), being connected by band steel (inner core membrane wall little tube panel band steel 18) between pipe, form the little tube panel of membrane wall, little tube panel is along drum shaft
Conduit is become at cylinder spiral inner wall winding escalator, the path on the one hand pushed forward as lime-ash, on the one hand increase internal heating surface,
Improve slag cooler exchange capability of heat；In this programme, the specification of each heat exchanger tube of the little tube panel of spiral membrane wall is identical.
In slag cooler, all heat exchanger tube transfer working medium in heat are high-temperature molten salt.
Cylinder entrance point and the port of export are respectively provided with a swivel joint 1.
Cylinder inlet and outlet is respectively arranged with an annular header 4, with barrel coiled coil heat exchanger tube 13 and the little tube panel of inner core membrane wall
Heat exchanger tube 14 connects.
Arrange some longitudinal baffles 15 between adjacent two pitches of cylinder inside spin conduit, play reinforcement bottom ash disturbance, strengthening
The effect of heat transfer.
Before startup, in electrically heated mode fused salt melted in fused salt tank and be heated to above operating temperature so that it is temperature
There is certain nargin, to avoid it to solidify after entering slag cooler, it also avoid the heating to cylinder itself, it is not necessary to set simultaneously
Put heating wire etc., simplify slag cooler structure, also make the maintenance of equipment more easily operate.
After equipment is stopped transport, for accumulating the fused salt in cylinder bottom, the mode of pressure air or steam blowing can be used to empty.
This fused salt roller slag cooler may utilize fused salt and effectively reclaims high temperature bottom slag part of waste heat, then is used for heating by this partial heat
Hot blast, improves one/bis-this air temperature.
Concrete, to a 600MWCFB boiler, bed drain purge 114.3t/h, every fused salt heat exchanging device is exerted oneself 30t/h.Through design
Calculate, use typical Molten Binary Salts (60%NaNO3+ 40%KNO3), fused salt roller slag cooler cylinder external diameter 2.22m, import is arrived
Exporting long 9.4m, heat exchanger tube specification is 38 × 4mm.Inner core helical tube panel heat exchanger tube radical 7, band steel width 8mm between pipe,
Thick 6mm, tube panel height 332mm, screw pitch 20mm, the spiral number of turns 47 is enclosed.Cylinder outer wall coil pipe radical 4, pipe
Between band steel width 8mm, thick 10mm, the single heat exchange tube coiling number of turns 51 is enclosed.Fused salt flowing drag overall 0.57MPa in slag cooler,
Flow rate of molten salt 13.688kg/s, fused salt flow velocity 1m/s in pipe.Slag cooler total heat conduction area 293.20m2.It is computed, if this is cold
Slag device accesses design system heating hot blast, can save coal consumption about 15600t every year, can save coal-fired investment about 4,700,000 yuan.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and former
Any amendment, equivalent and the improvement etc. made within then, should be included within the scope of the present invention.
Claims (6)
1. the roller slag cooler with fused salt as cooling medium, including drive mechanism, and is driven around central shaft rotation by drive mechanism
The cylinder turned, it is characterised in that: cylinder barrel is closely coiled to form along cylinder axial screw by some heat exchanger tubes, by band steel between pipe
Connect, form membrane wall barrel；At drums inside, by inner wall of rotary drum, radially arrange some heat exchanger tubes, between pipe by
Band steel connects, and forms membrane panel, and membrane panel axially forms conduit at inner wall of rotary drum coiled coil along cylinder；Cylinder
Inlet and outlet is respectively arranged with an annular header, is connected with the heat exchanger tube of membrane wall barrel and the heat exchanger tube of membrane panel；In cylinder
Between adjacent two pitches of the spiral channel that membrane panel is formed, circumferentially spaced on inner wall of rotary drum arrange some longitudinal directions
Baffle plate, longitudinal baffle axially and radially extends along cylinder simultaneously, and also towards peripheral, oblique, inclination side while court radially extends
To contrary with cylinder direction of rotation.
2. the roller slag cooler with fused salt as cooling medium as claimed in claim 1, it is characterised in that: drive mechanism includes around rolling
The sprocket wheel of cylinder stack shell, and band movable sprocket is around the motor of central shaft rotation and reductor thereof.
3. the roller slag cooler with fused salt as cooling medium as claimed in claim 1, it is characterised in that: also include supporting propping up of cylinder
Support mechanism.
4. the roller slag cooler with fused salt as cooling medium as claimed in claim 3, it is characterised in that: supporting mechanism include base,
Front end bearing, rear end bearing and bracing ring, front and back ends supporting is respectively arranged on base and is positioned at cylinder front and rear portions, bracing ring
Wound drum stack shell respectively support are fixed in front and back ends supporting.
5. the roller slag cooler with fused salt as cooling medium as claimed in claim 1, it is characterised in that: cylinder one end open is slag input
End, other end opening is slag output end, and the slag input end of cylinder is provided with slag feeding device, and the slag output end of cylinder is provided with dust cover and slag notch.
6. the roller slag cooler with fused salt as cooling medium as claimed in claim 1, it is characterised in that: the two ends of cylinder set the most respectively
There is swivel joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369951.5A CN105865227A (en) | 2016-05-30 | 2016-05-30 | Roller type slag cooler using molten salt as cooling medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369951.5A CN105865227A (en) | 2016-05-30 | 2016-05-30 | Roller type slag cooler using molten salt as cooling medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105865227A true CN105865227A (en) | 2016-08-17 |
Family
ID=56642636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610369951.5A Pending CN105865227A (en) | 2016-05-30 | 2016-05-30 | Roller type slag cooler using molten salt as cooling medium |
Country Status (1)
| Country | Link |
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| CN (1) | CN105865227A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490298A (en) * | 2017-08-02 | 2017-12-19 | 铜陵有色兴铜机电制造有限公司 | A kind of cooling humidifying roller |
| CN108398040A (en) * | 2018-05-02 | 2018-08-14 | 江苏远方迪威尔设备科技有限公司 | Rotary heat exchanger |
| CN108559812A (en) * | 2018-04-25 | 2018-09-21 | 河南省冶金研究所有限责任公司 | A kind of steel slag waste heat recycle device |
| CN111440940A (en) * | 2020-04-10 | 2020-07-24 | 中国重型机械研究院股份公司 | Wire rod fused salt roll table box body large deformation self-adaptation sealing device |
| CN112880420A (en) * | 2021-01-12 | 2021-06-01 | 黄秋霞 | Energy-concerving and environment-protective steel smelting processingequipment |
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| CN101566347A (en) * | 2009-05-22 | 2009-10-28 | 徐州燃控科技股份有限公司 | Helical tube panel roller slag cooler |
| CN104048304A (en) * | 2014-07-09 | 2014-09-17 | 刘绪相 | Horizontal spiral tube roller slag cooler |
| CN205808161U (en) * | 2016-05-30 | 2016-12-14 | 东方电气集团东方锅炉股份有限公司 | A kind of roller slag cooler with fused salt as cooling medium |
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| JPH09178140A (en) * | 1995-12-22 | 1997-07-11 | Sumitomo Heavy Ind Ltd | Fluidized bed refuse incinerator and ash melting furnace, and refuse incinerator system combining them |
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| CN200979169Y (en) * | 2006-12-06 | 2007-11-21 | 曹煦澄 | Highly effective cooling drum type cold slag device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490298A (en) * | 2017-08-02 | 2017-12-19 | 铜陵有色兴铜机电制造有限公司 | A kind of cooling humidifying roller |
| CN108559812A (en) * | 2018-04-25 | 2018-09-21 | 河南省冶金研究所有限责任公司 | A kind of steel slag waste heat recycle device |
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| CN108398040A (en) * | 2018-05-02 | 2018-08-14 | 江苏远方迪威尔设备科技有限公司 | Rotary heat exchanger |
| CN108398040B (en) * | 2018-05-02 | 2024-01-12 | 江苏远方涂装环保科技有限公司 | Rotary heat exchanger |
| CN111440940A (en) * | 2020-04-10 | 2020-07-24 | 中国重型机械研究院股份公司 | Wire rod fused salt roll table box body large deformation self-adaptation sealing device |
| CN111440940B (en) * | 2020-04-10 | 2023-08-08 | 中国重型机械研究院股份公司 | Large deformation self-adaptive sealing device for wire rod fused salt roller way box body |
| CN112880420A (en) * | 2021-01-12 | 2021-06-01 | 黄秋霞 | Energy-concerving and environment-protective steel smelting processingequipment |
| CN112880420B (en) * | 2021-01-12 | 2023-04-28 | 临沂玫德庚辰金属材料有限公司 | Energy-saving and environment-friendly steel smelting device |
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