CN107267164A - A kind of coke oven flue waste gas afterheat recovery unit of service life length - Google Patents
A kind of coke oven flue waste gas afterheat recovery unit of service life length Download PDFInfo
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- CN107267164A CN107267164A CN201710562039.6A CN201710562039A CN107267164A CN 107267164 A CN107267164 A CN 107267164A CN 201710562039 A CN201710562039 A CN 201710562039A CN 107267164 A CN107267164 A CN 107267164A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0068—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only nitrides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0094—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with organic materials as the main non-metallic constituent, e.g. resin
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
- C22C2026/002—Carbon nanotubes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon And Carbon Compounds (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of coke oven flue waste gas afterheat recovery unit for service life length that the present invention is provided, including flue (1) and heat exchange coil (2)；The flue (1) includes wave disc (15), helical heating pipe (16) and from-inner-to-outer are set gradually inner tube wall (11), phase-change material layers (12), thermal insulation layer (13), outer tube wall (14)；The inner tube wall (11) is bellows；It is welded to connect respectively by wave disc (15) between bottom between the inner tube wall (11), the top of outer tube wall (14)；The helical heating pipe (16) is located between inner tube wall (11), phase-change material layers (12)；The heat exchange coil (2) is in phase-change material layers (12), and its bottom is provided with media outlet (22) provided with medium entrance (21), top.The waste-heat recovery device, as upper wall and inwall, while setting heating tube to remove coking, can greatly prolong service life using wave disc and bellows, and heat exchange efficiency height, effect are good in addition.
Description
Technical field
The invention belongs to coke oven for iron field, the coke oven flue waste gas residual heat of more particularly to a kind of service life length reclaims dress
Put.
Background technology
Coke oven can do high-temperature retorting processing to coal, be efficiently converted to coke, coke-stove gas, coal tar, crude benzol
It is efficient energy conversion kiln Deng product.Hanker in coke oven expenditure, the heat of taking out of of 650 DEG C of -700 DEG C of raw coke oven gas accounts for 36%,
It is worth with high recycling.At present, the commercial Application of raw coke oven gas, traditional work are generally realized using cooling handling process
Skill is：Spraying a large amount of 70 DEG C of -75 DEG C of cyclic ammonia waters to high temperature raw coke oven gas makes it cool, and waste heat recovery is realized, however, this can cause
High temperature raw coke oven gas is taken heat out of and wasted because of a large amount of evaporations of cyclic ammonia water.
In the 1980s, conduction oil was once used for tedge recovery raw coke oven gas by major part coke-oven plant of Japan takes heat out of：
Tedge is made jacket pipe by them, and conduction oil passes through jacket pipe and high temperature raw coke oven gas indirect heat exchange, heated high-temperature heat-conductive
Oil can be used for multiple use, such as ammonia still process, Doak Tar Oil, dry as-fired coal etc..Later, China's Ji steel once rose in five holes
Pipe has carried out similar experiment；China's Wuhan Iron and Steel Plant, Ma Gang, Anshan iron and steel plant, ripples steel, Beijing coke-oven plant, the factory of Shenyang coal gas two, the iron of this steel one,
The many enterprises such as table mountain coke-oven plant once reclaimed this partial heat in tedge using water vapor cooling technology；In addition, also there is enterprise
Industry uses the method by medium of nitrogen, with high temperature raw coke oven gas indirect heat exchange.
Existing coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes the structure of thermal, in overall point, in, outer three layers basic knot
Structure.Internal layer is high temperature resistant, the cylinder of corrosion resistant steel alloy material, and raw coke oven gas flows through from bottom to top in cylinder.Centre is core
Heart heat transfer layer, the outer wall of inner cylinder is closely attached to high heat conduction ability, certain thickness high temperature resistant phase-change material layers, heat transfer
Pipe is in close contact through phase-change material layers, and with the phase-change material layers, and what is flowed through in heat-transfer pipe is to take thermal medium, and it is being flowed over
The thermal discharge of raw coke oven gas in inner cylinder is absorbed in journey, temperature is raised in flow process from bottom to top.On heat-transfer pipe or spiral
Rise and spiral in the solid dielectric, or be uprightly arranged in the phase-change material layers from bottom to top, phase-change material layers need to cover whole biography
The outer surface of heat pipe；Outer layer is heat insulation protecting layer, and metal material cylinder posts insulation material on internal face, to inner cylinder and centre
Core heat transfer layer plays a part of being incubated and protected, and reduces heat loss, is not hit.
However, existing coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes thermal more or less to there is problems with：Pass
The structure design of thermal process is unreasonable, low, the raw coke oven gas side wall tar that circulates not unobstructed enough, heat exchange efficiency is bonded causes to block waste
Gas passage, conduction oil coking and blocking conduction oil passage, easily corroded by medium etc. or can not effectively be solved driving and parking and ran
The problem of expanding with heat and contract with cold of journey, this causes above method to be either difficult to successful implementation or is difficult to gratifying effect.
The content of the invention
Technical problem：In order to solve the defect of prior art, the invention provides a kind of coke oven flue of service life length
Waste gas afterheat recovery unit.
Technical scheme：A kind of coke oven flue waste gas afterheat recovery unit for service life length that the present invention is provided, including cigarette
Feed channel (1) and heat exchange coil (2)；The flue (1) includes wave disc (15), helical heating pipe (16) and from interior
Inner tube wall (11), phase-change material layers (12), thermal insulation layer (13), the outer tube wall (14) set gradually outside；The inner tube wall (11) is
Bellows；Welded and connected by wave disc (15) respectively between bottom between the inner tube wall (11), the top of outer tube wall (14)
Connect；The helical heating pipe (16) is located between inner tube wall (11), phase-change material layers (12)；The heat exchange coil (2) is located at phase
In change material layer (12), its bottom is provided with media outlet (22) provided with medium entrance (21), top.
As an improvement, the inner tube wall (11) is made up of high-efficiency heat conduction composite, the high-efficiency heat conduction composite is extremely
It is few to be made up of the component of following parts by weight：100 parts of iron, 11.2-13.1 parts of chromium, 5.08-5.16 parts of nickel, 0.83-0.99 parts of silicon, carbon
0.60-0.70 parts, 0.65-0.78 parts of manganese, 0.4-0.8 parts of titanium nitride, 1-2 parts of CNT, 1-2 parts of Nanometer Copper, Nano-Zinc
0.5-1.5 parts, 2-4 parts of chitosan.
Improved as another, the high-efficiency heat conduction composite is at least made up of the component of following parts by weight：Iron 100
Part, 12.2-12.4 parts of chromium, 5.12-5.14 parts of nickel, 0.86-0.88 parts of silicon, 0.64-0.66 parts of carbon, 0.68-0.70 parts of manganese, nitridation
0.5-0.7 parts of titanium, 1.4-1.6 parts of CNT, 1.4-1.6 parts of Nanometer Copper, 0.8-1.2 parts of Nano-Zinc, chitosan 2.8-3.2
Part.
Improved as another, the high-efficiency heat conduction composite is at least made up of the component of following parts by weight：Iron 100
Part, 12.3 parts of chromium, 5.13 parts of nickel, 0.87 part of silicon, 0.65 part of carbon, 0.69 part of manganese, 0.6 part of titanium nitride, 1.5 parts of CNT, receive
1.5 parts of copper of rice, 1.0 parts of Nano-Zinc, 3.0 parts of chitosan.
Beneficial effect：The waste-heat recovery device that the present invention is provided using wave disc and bellows as upper wall and inwall, together
When set heating tube to remove coking, service life can be greatly prolonged, heat exchange efficiency is high in addition, effect is good.
Relative to prior art, the device has advantage following prominent：
First, using wave disc and bellows as upper wall and inwall, expand with heat and contract with cold influences small to device, can greatly prolong
Service life；
Second, temperature changing speed in phase-change material layers, reduction structure is set, and further reduction is expanded with heat and contract with cold to device
Influence, greatly prolongs service life；
3rd, inner tube wall is made of special material, and heat exchange efficiency is very high.
Brief description of the drawings
Fig. 1 is the structural representation of the coke oven flue waste gas afterheat recovery unit of service life length of the present invention.
Embodiment
The coke oven flue waste gas afterheat recovery unit of service life length of the present invention is further illustrated below.
Embodiment 1
The coke oven flue waste gas afterheat recovery unit of service life length, including flue (1) and heat exchange coil (2)；Institute
State inner tube wall (11), phase that flue (1) is set gradually including wave disc (15), helical heating pipe (16) and from-inner-to-outer
Change material layer (12), thermal insulation layer (13), outer tube wall (14)；The inner tube wall (11) is bellows；The inner tube wall (11), outer barrel
It is welded to connect respectively by wave disc (15) between bottom between the top of wall (14)；The helical heating pipe (16) is located at interior
Between barrel (11), phase-change material layers (12)；The heat exchange coil (2) is in phase-change material layers (12), and its bottom is provided with Jie
Matter import (21), top are provided with media outlet (22).
The inner tube wall (11) is made up of high-efficiency heat conduction composite, and the high-efficiency heat conduction composite is at least by following heavy
The component of amount part is made：100 parts of iron, 12.3 parts of chromium, 5.13 parts of nickel, 0.87 part of silicon, 0.65 part of carbon, 0.69 part of manganese, titanium nitride 0.6
Part, 1.5 parts of CNT, 1.5 parts of Nanometer Copper, 1.0 parts of Nano-Zinc, 3.0 parts of chitosan.
Embodiment 2
It is substantially the same manner as Example 1, it the difference is that only：The heat-conductive composite material is at least by the group of following parts by weight
Divide and be made：100 parts of iron, 12.2 parts of chromium, 5.12 parts of nickel, 0.86 part of silicon, 0.64 part of carbon, 0.70 part of manganese, 0.5 part of titanium nitride, carbon are received
1.4 parts of mitron, 1.6 parts of Nanometer Copper, 0.8 part of Nano-Zinc, 3.2 parts of chitosan.
Embodiment 3
It is substantially the same manner as Example 1, it the difference is that only：The heat-conductive composite material is at least by the group of following parts by weight
Divide and be made：100 parts of iron, 12.4 parts of chromium, 5.14 parts of nickel, 0.88 part of silicon, 0.66 part of carbon, 0.68 part of manganese, 0.7 part of titanium nitride, carbon are received
1.6 parts of mitron, 1.4 parts of Nanometer Copper, 1.2 parts of Nano-Zinc, 2.8 parts of chitosan.
Embodiment 4
It is substantially the same manner as Example 1, it the difference is that only：The heat-conductive composite material is at least by the group of following parts by weight
Divide and be made：100 parts of iron, 11.2 parts of chromium, 5.08 parts of nickel, 0.83 part of silicon, 0.70 part of carbon, 0.78 part of manganese, 0.4 part of titanium nitride, carbon are received
1 part of mitron, 2 parts of Nanometer Copper, 0.5 part of Nano-Zinc, 4 parts of chitosan.
Embodiment 5
It is substantially the same manner as Example 1, it the difference is that only：The heat-conductive composite material is at least by the group of following parts by weight
Divide and be made：100 parts of iron, 13.1 parts of chromium, 5.16 parts of nickel, 0.99 part of silicon, 0.60 part of carbon, 0.65 part of manganese, 0.8 part of titanium nitride, carbon are received
2 parts of mitron, 1 part of Nanometer Copper, 1.5 parts of Nano-Zinc, 2 parts of chitosan.
Comparative example 1
Composite 1, is at least made up of the component of following parts by weight：100 parts of iron, 12.3 parts of chromium, 5.13 parts of nickel, silicon 0.87
Part, 0.65 part of carbon, 0.69 part of manganese.
Comparative example 2
Composite 2, is at least made up of the component of following parts by weight：100 parts of iron, 12.3 parts of chromium, 5.13 parts of nickel, silicon 0.87
Part, 0.65 part of carbon, 0.69 part of manganese, 1.5 parts of CNT.
Comparative example 3
Composite 3, is at least made up of the component of following parts by weight：100 parts of iron, 12.3 parts of chromium, 5.13 parts of nickel, silicon 0.87
Part, 0.65 part of carbon, 0.69 part of manganese, 1.5 parts of Nanometer Copper, 1.0 parts of Nano-Zinc.
Comparative example 4
Composite 4, is at least made up of the component of following parts by weight：100 parts of iron, 12.3 parts of chromium, 5.13 parts of nickel, silicon 0.87
Part, 0.65 part of carbon, 0.69 part of manganese, 3.0 parts of chitosan.
Comparative example 5
Composite 1, is at least made up of the component of following parts by weight：100 parts of iron, 12.3 parts of chromium, 5.13 parts of nickel, silicon 0.87
Part, 0.65 part of carbon, 0.69 part of manganese, 0.6 part of titanium nitride.
The performance of testing example 1 to 5, comparative example 1-4 composite, see the table below.
| Composite is originated | Thermal conductivity factor (W/m.K) | Composite is originated | Thermal conductivity factor (W/m.K) |
| Embodiment 1 | 1576 | Comparative example 1 | 458 |
| Embodiment 2 | 1381 | Comparative example 2 | 948 |
| Embodiment 3 | 1374 | Comparative example 3 | 626 |
| Embodiment 4 | 1345 | Comparative example 4 | 447 |
| Embodiment 5 | 1328 | Comparative example 5 | 586 |
Claims (5)
1. a kind of coke oven flue waste gas afterheat recovery unit of service life length, it is characterised in that：Including flue (1) and change
Hot coil (2)；The flue (1) includes what wave disc (15), helical heating pipe (16) and from-inner-to-outer were set gradually
Inner tube wall (11), phase-change material layers (12), thermal insulation layer (13), outer tube wall (14)；The inner tube wall (11) is bellows；In described
It is welded to connect respectively by wave disc (15) between bottom between barrel (11), the top of outer tube wall (14)；The spiral adds
Heat pipe (16) is located between inner tube wall (11), phase-change material layers (12)；The heat exchange coil (2) is located at phase-change material layers (12)
Interior, its bottom is provided with media outlet (22) provided with medium entrance (21), top.
2. a kind of coke oven flue waste gas afterheat recovery unit of service life length according to claim 1, it is characterised in that：
The inner tube wall (11) is made up of high-efficiency heat conduction composite, and the high-efficiency heat conduction composite is at least by the group of following parts by weight
Divide and be made：100 parts of iron, 11.2-13.1 parts of chromium, 5.08-5.16 parts of nickel, 0.83-0.99 parts of silicon, 0.60-0.70 parts of carbon, manganese
0.65-0.78 parts, 0.4-0.8 parts of titanium nitride, 1-2 parts of CNT, 1-2 parts of Nanometer Copper, 0.5-1.5 parts of Nano-Zinc, chitosan
2-4 parts.
3. a kind of coke oven flue waste gas afterheat recovery unit of service life length according to claim 2, it is characterised in that：
The high-efficiency heat conduction composite is at least made up of the component of following parts by weight：100 parts of iron, 12.2-12.4 parts of chromium, nickel 5.12-
5.14 parts, 0.86-0.88 parts of silicon, 0.64-0.66 parts of carbon, 0.68-0.70 parts of manganese, 0.5-0.7 parts of titanium nitride, CNT 1.4-
1.6 parts, 1.4-1.6 parts of Nanometer Copper, 0.8-1.2 parts of Nano-Zinc, 2.8-3.2 parts of chitosan.
4. a kind of coke oven flue waste gas afterheat recovery unit of service life length according to claim 2, it is characterised in that：
The high-efficiency heat conduction composite is at least made up of the component of following parts by weight：100 parts of iron, 12.3 parts of chromium, 5.13 parts of nickel, silicon
0.87 part, 0.65 part of carbon, 0.69 part of manganese, 0.6 part of titanium nitride, 1.5 parts of CNT, 1.5 parts of Nanometer Copper, 1.0 parts of Nano-Zinc, shell
3.0 parts of glycan.
5. a kind of high-efficiency heat conduction composite for coke oven flue waste gas afterheat recovery unit, it is characterised in that：At least by with
The component of lower parts by weight is made：100 parts of iron, 11.2-13.1 parts of chromium, 5.08-5.16 parts of nickel, 0.83-0.99 parts of silicon, carbon 0.60-
0.70 part, 0.65-0.78 parts of manganese, 0.4-0.8 parts of titanium nitride, 1-2 parts of CNT, 1-2 parts of Nanometer Copper, Nano-Zinc 0.5-1.5
Part, 2-4 parts of chitosan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562039.6A CN107267164B (en) | 2017-07-11 | 2017-07-11 | Coke oven flue waste gas waste heat recovery device with long service life |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562039.6A CN107267164B (en) | 2017-07-11 | 2017-07-11 | Coke oven flue waste gas waste heat recovery device with long service life |
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| CN107267164B CN107267164B (en) | 2023-09-19 |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1233321A (en) * | 1996-10-14 | 1999-10-27 | 埃德麦斯顿公司 | Support plate for tube heat exchangers and a tube heat exchanger |
| CN101782340A (en) * | 2009-01-15 | 2010-07-21 | 王智慧 | Multi-stage type high-efficiency bellows waste heat recovery device |
| CN202688260U (en) * | 2012-07-23 | 2013-01-23 | 辽宁科技大学 | Raw coke oven gas afterheat recycling device of coke oven riser tube |
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| CN106705729A (en) * | 2016-12-26 | 2017-05-24 | 江苏龙冶节能科技有限公司 | Coke oven raw gas ascension pipe heat exchange device |
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