CN101935736A - Water-cooling movable smoke hood - Google Patents
Water-cooling movable smoke hood Download PDFInfo
- Publication number
- CN101935736A CN101935736A CN 201010271404 CN201010271404A CN101935736A CN 101935736 A CN101935736 A CN 101935736A CN 201010271404 CN201010271404 CN 201010271404 CN 201010271404 A CN201010271404 A CN 201010271404A CN 101935736 A CN101935736 A CN 101935736A
- Authority
- CN
- China
- Prior art keywords
- pipe
- water
- petticoat pipe
- gas hood
- movable gas
- 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.)
- Granted
Links
Images
Abstract
The invention provides a water-cooling movable smoke hood. The water-cooling movable smoke hood comprises an upper part smoke hood and a lower part smoke hood, the upper part smoke hood and the lower part smoke hood respectively comprise a plurality of annular water cooling pipes which are laminated together, a water inlet pipe and a water outlet pipe, the annular water cooling pipe is communicated with the water inlet pipe by virtue of a water inlet branch pipe and is communicated with the water outlet pipe by virtue of a water outlet branch pipe, a plurality of annular water cooling pipes of the upper part smoke hood and a plurality of annular water cooling pipes of the lower part smoke hood form a straight barrel shaped or cone shaped structure which is open up and down. By adopting the technical scheme of the invention, the water cooling movable smoke hood is divided into the upper part smoke hood and the lower part smoke hood, the upper part smoke is heavily woven after being used for a period of time, and only the upper part smoke is required to be replaced in short-term maintenance. Thus, the water cooling movable smoke hood of the invention can reduce work load of maintenance, save maintenance time and improve the efficiency of converter.
Description
Technical field
The present invention relates to the water-cooled movable gas hood.
Background technology
In order to collect the flue gas that steel-making produces, fixing petticoat pipe is being housed above the converter and is being arranged on the fixedly movable gas hood between the petticoat pipe and converter usually.Flue gas is through movable gas hood and fixedly enter cooling stack or waste heat boiler behind the petticoat pipe to utilize used heat, enters the purification cooling system then.The setting of movable gas hood is mainly used to maximize furnace gas and the products of combustion thereof of collection from the fire door ejection, just these furnace gases and products of combustion thereof is directed to greatest extent fixedly in the petticoat pipe.Particularly, but the movable gas hood free lifting, thus adjust the lifting of movable gas hood according to converter in the physical location in when operation, reducing movable gas hood and the fixing gap size between the petticoat pipe as far as possible, thereby avoid flue gas to leak as far as possible.
Converter movable hood is generally watercooled hood, the stacked welded seal of circular pipe that watercooled hood is generally rolled into by a plurality of water cooling tubes (Low Carbon Steel Pipe), cylindric to form, wherein each water cooling tube is by water-inlet header (water inlet pipe) with go out water manifold (rising pipe) and be connected with water coolant.The temperature of the flue gas that converter steelmaking produces is up to 1100～1400 ℃, contains a large amount of dust such as gas such as CO, CO2, N2, S and high temperature sludge, abrasive grit, lime.Because be subjected to the high temperature corrosion that multiple solid dust washes away and gas produces, movable gas hood is in bad working environment, thereby the tube wall of water cooling tube is subjected to the burn into wearing and tearing and obvious attenuate.In addition, since the gap of converter blowing, the sometimes hot and sometimes cold effect that is subjected to temperature variation of the tube wall of water cooling tube, the heat fatigue cracking of a large amount of ring shapes of generation on tube wall for a long time, the liquid slag that in addition splashes and the high temperature impact of molten iron, movable gas hood easily produces pit even perforation is leaked.Therefore, the work-ing life of revolving furnace fume hood is very short, have only about 1 year, and casualty ratio of accidents is very high in lifetime, often maintenance.
Summary of the invention
The present inventor adopts laser thickness gauge that the movable gas hood that uses in producing is carried out thickness measuring, finds to be corroded, to corrode, to wash away the top that weakest link is positioned at movable gas hood in the movable gas hood.For example, be that 55mm, thickness are that 20 pots of steel of 5mm are made water cooling tube by external diameter, and form movable gas hoods with 24 layers of this water cooling tubes welding, use half a year after, the tube wall attenuation of the 1st to the 12nd layer of water cooling tube from top to bottom of measuring result show events petticoat pipe.Wherein the tube wall attenuation of the 1st to the 6th layer of water cooling tube is the most serious, and thinnest part has only about 1-2mm and defectives such as perforation, crackle occur.
For solving the problems of the technologies described above, the invention provides a kind of water-cooled movable gas hood, wherein, this water-cooled movable gas hood comprises top petticoat pipe and bottom petticoat pipe, described top petticoat pipe and described bottom petticoat pipe comprise a plurality of annular water cooling tubes that are superimposed together, a water inlet pipe and a rising pipe separately, each described annular water cooling tube is communicated with water inlet pipe and passes through an exit branch by a water inlet arm and is communicated with rising pipe, and a plurality of annular water cooling tube of top petticoat pipe forms the straight tubular or the cone barrel structure of upper and lower opening with a plurality of annular water cooling tube of bottom petticoat pipe.
By technique scheme of the present invention, the water-cooled movable gas hood is divided into top petticoat pipe and bottom petticoat pipe, after using for some time, the wearing and tearing of top petticoat pipe are comparatively serious, only need change the top petticoat pipe when safeguarding in a short time and get final product.Therefore, water-cooled movable gas hood of the present invention can alleviate the workload of maintenance, saves maintenance time, has improved the functioning efficiency of converter.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification sheets, is used from explanation the present invention with the specific embodiment of the present invention one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic perspective view of the structure of explanation movable gas hood of the present invention;
Fig. 2 is the top view of the movable gas hood of explanatory view 1;
Fig. 3 is the structural representation of the water cooling tube of explanation movable gas hood of the present invention.
Description of reference numerals
1a: water cooling tube 1b: water inlet arm 1c: exit branch
2a: the water inlet pipe 2b of top petticoat pipe: the water inlet pipe of bottom petticoat pipe
3a: the rising pipe 3b of top petticoat pipe: the rising pipe of bottom petticoat pipe
4: flange 5: sealed steam house steward 6: the sealed steam arm
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
Water-cooled movable gas hood of the present invention comprises top petticoat pipe and bottom petticoat pipe, described top petticoat pipe and described bottom petticoat pipe comprise a plurality of annular water cooling tube 1a, a water inlet pipe and rising pipes that are superimposed together separately, each described annular water cooling tube 1a is communicated with water inlet pipe and passes through an exit branch 1c by a water inlet arm 1b and is communicated with rising pipe, and a plurality of annular water cooling tube 1a of top petticoat pipe forms the straight tubular or the cone barrel structure of upper and lower opening with a plurality of annular water cooling tube 1a of bottom petticoat pipe.
For convenience of explanation, the water inlet pipe and the rising pipe of top petticoat pipe are represented that with Reference numeral 2a and 3a the water inlet pipe of bottom petticoat pipe and rising pipe are represented with Reference numeral 2b and 3b.
Preferably, annular water cooling tube 1a can be integrally formed with water inlet arm 1b and exit branch 1c.As shown in Figure 3, water inlet arm 1b and exit branch 1c stretch out from water cooling tube 1a.For the ease of arranging, water inlet arm 1b and exit branch 1c are provided with on the contrary.In addition, for the ease of being connected with water inlet pipe 2a, 2b and rising pipe 3a, 3b, can make stacked a plurality of water inlet arm 1b all be arranged on a side and water inlet pipe 2a, 2b are arranged on this side (for example left side among Fig. 2), a plurality of exit branch 1c all are arranged on opposite side and rising pipe 3a, 3b are arranged on this side (for example right side among Fig. 2).
In each of described top petticoat pipe and described bottom petticoat pipe, the stacked sealing setting of a plurality of water cooling tube 1a, for example can stacked ground seal welding together, thereby make top petticoat pipe and each self-forming of bottom petticoat pipe be roughly the cylindrical shell shape.The bottom petticoat pipe is arranged on petticoat pipe below, top, thereby makes water-cooled movable gas hood integral body of the present invention also roughly form cylindrical shell shape (straight barrel shape or cone barrel shape).After using for some time, if the top petticoat pipe washes away serious wear because of burn into, only the top petticoat pipe that need more renew can return to normal production apace.In other words, the top that only need replace the top petticoat pipe of wearing and tearing with new top petticoat pipe and be arranged on the bottom petticoat pipe can be finished and be changed operation.
Top petticoat pipe and bottom petticoat pipe can be by separately water inlet pipe and rising pipe provide and discharge water coolant to separately water cooling tube 1a.In this case, need be respectively the top petticoat pipe and the bottom petticoat pipe is provided with water-supply line and discharge pipe line etc.In a kind of preferred implementation of the present invention, the water inlet pipe 2b of the water inlet pipe 2a of described top petticoat pipe and described bottom petticoat pipe is tightly connected and is interconnected, and the rising pipe 3b of the rising pipe 3a of described top petticoat pipe and described bottom petticoat pipe is tightly connected and is interconnected.By this layout, can provide water coolant to the water inlet pipe 2a of top petticoat pipe or the water inlet pipe 2b of described bottom petticoat pipe by shared water-supply line, and by the rising pipe 3a of described top petticoat pipe or the water coolant of rising pipe 3b after shared discharge pipe line discharging is used of described bottom petticoat pipe.For example, can make the water inlet pipe 2a of upper smoke cover be connected in shared water-supply line, and make the rising pipe 3b of bottom petticoat pipe be connected in shared discharge pipe line.But those skilled in the art also can adopt other mode of connection to realize the supply and the discharging of water coolant.
In addition, can dock the water inlet pipe 2a of the described top of installation petticoat pipe and the water inlet pipe 2b and the butt joint of described bottom petticoat pipe the rising pipe 3a of described top petticoat pipe and the rising pipe 3b of described bottom petticoat pipe are installed, thereby the top petticoat pipe more firmly is arranged on the top of bottom petticoat pipe.Preferably, the water inlet pipe 2a of described top petticoat pipe and the water inlet pipe 2b of described bottom petticoat pipe removably are connected, the rising pipe 3a of described top petticoat pipe removably is connected with the rising pipe 3b of described bottom petticoat pipe.Thereby can be easy for removal and installation when changing the top petticoat pipe.In a kind of embodiment of the present invention, as depicted in figs. 1 and 2, the water inlet pipe 2b that advances arm 2a and described bottom petticoat pipe of described top petticoat pipe is connected with screw element by flange 4, and the rising pipe 3a of described top petticoat pipe is connected with screw element by flange 4 with the rising pipe 3b of described bottom petticoat pipe.Those skilled in the art also can adopt alternate manner to realize above-mentioned removably installation.In addition, the water inlet pipe 2b that advances arm 2a and described bottom petticoat pipe that also can make described top petticoat pipe is by being welded to connect, need only when removing the top petticoat pipe weld is cut, similarly, the rising pipe 3b of the rising pipe 3a of described top petticoat pipe and described bottom petticoat pipe also can be by being welded to connect.
Top petticoat pipe and bottom petticoat pipe can have the identical or different water cooling tube 1a of quantity as required.Though research according to the present inventor, for example in 24 stacked water cooling tube 1a, have only 6 layers of water cooling tube 1a on top to need periodic replacement because of serious wear, but has enough intensity in order to ensure each water cooling tube 1a near the top of water-cooled movable gas hood of the present invention, and for space that attended operation is provided convenient operation, preferably, described top petticoat pipe and described bottom petticoat pipe have the described water cooling tube 1a of equal amts separately.In other words, guarantee the security of described water-cooled movable gas hood by the water cooling tube 1a that when safeguarding, changes half.Wherein, the quantity of water cooling tube 1a can be according to material and the size Selection of water cooling tube 1a.Water cooling tube 1a can use the steel pipe with suitable wear resistance and suitable intensity to make.For example, when using external diameter to make water cooling tube 1a as 55mm, thickness as 20 pots of steel of 5mm, top petticoat pipe and bottom petticoat pipe can have the water cooling tube 1a of 12 stacked settings separately.
Among the present invention, as long as the top petticoat pipe firmly is arranged on petticoat pipe top, bottom, also can be tightly connected and be communicated with water inlet pipe 2a and 2b by above-mentioned, and be tightly connected and be communicated with rising pipe 3a and 3b strengthens firm effect, go up and get final product but the water cooling tube 1a of top petticoat pipe bottom only need be placed on the water cooling tube 1a at petticoat pipe top, bottom.Preferably, the water cooling tube 1a of petticoat pipe bottom, described top and the water cooling tube 1a at petticoat pipe top, described bottom fit together substantially hermetically.
Preferably, as depicted in figs. 1 and 2, described annular water cooling tube 1a is an annular, thereby whole water-cooled movable gas hood forms cylinder or taper barrel shape, to be suitable for the form fit with converter mouth, is convenient to be sealed and matched.
Along the short transverse of described water-cooled movable gas hood, the annular size of described water cooling tube 1a increases from the top down gradually.By this layout, can make whole water-cooled movable gas hood form the cone barrel shape, thereby be convenient to when the guiding flue gas with fume centralized, conveniently to collect and the flue gas of collection is directed in the fixedly petticoat pipe that is arranged on water-cooled movable gas hood top easily.
When the ring-type size of water cooling tube 1a increased from the top down gradually, from the top down, water inlet arm 1b that stretches out from water cooling tube 1a and the position of exit branch 1c can radially outwards be offset.Therefore, in order to be communicated with, from the top down, need to increase the length of water inlet arm 1b and exit branch 1c with water inlet pipe and rising pipe.
For increasing the length of water inlet arm 1b and exit branch 1c as few as possible, keep stable center of gravity when perhaps forming straight tubular water-cooled movable gas hood at the measure-alike of annular water cooling tube 1a, in preferred implementation illustrated in figures 1 and 2, the axis of described water inlet pipe 2a, 2b and described rising pipe 3a, 3b is substantially parallel with the outside surface of described straight tubular or cone barrel structure.When described water-cooled movable gas hood is the cone barrel shape, substantially parallel by the axis that makes described water inlet pipe 2a, 2b and described rising pipe 3a, 3b with the outside surface of cone barrel structure, the size of water cooling tube 1a above being positioned at is less, but the length of water inlet arm 1b and exit branch 1c is bigger; The size of water cooling tube 1a below being positioned at is bigger, but the length of water inlet arm 1b and exit branch 1c is less.Thereby can make whole water-cooled activity flue have stable structure more.
In addition, in order to seal described water-cooled movable gas hood and the fixing gap between the petticoat pipe, described water-cooled movable gas hood also comprises annular air-supply duct 5, this annular air-supply duct 5 is arranged on the top of described top petticoat pipe, this annular air-supply duct 5 has inlet mouth and a plurality of arm 6, one end of each described arm 6 is communicated in described annular air-supply duct 5, and the other end is open towards the inside of described water-cooled movable gas hood, and a plurality of described arms 6 are provided with along the circumferential interval of described annular air-supply duct 5.
During use, the gas of certain flow (for example 3.1-3.5 ton/hour) and pressure (for example 0.5-0.6MPa) can be provided the inlet mouth of annular air-supply duct 5 by corresponding supply air line, this gas sprays by the other end of arm 6, make the flue gas in the water-cooled movable gas hood concentrate, thereby prevent that flue gas from outwards scattering and from water-cooled movable gas hood and the fixing clearance leakage between the petticoat pipe towards the center.
In order to realize good sealing effectiveness by gas, the gas that arm 6 sprays should be able to cover the cyclic inner edge of annular air-supply duct 5.For this reason, should select the arm 6 of proper amt and size and make it with the proper spacing setting.For example, when annular air-supply duct 5 is an annular, and the inner edge diameter of this annular can be provided with 185-200 arm 6 along this inner edge equal angles compartment of terrain when being 3700-3800mm.
In addition, the annular air-supply duct 5 of appropriate size can be selected as required, when enough gas is provided, keeping enough intensity, thereby arm 6 can be supported.
In order further to prevent smoke spillage, need guarantee fitting tightly of sealed steam device and top petticoat pipe as far as possible, therefore, described annular air-supply duct 5 shape and the open-topped shape of described top petticoat pipe be complementary.
Need to prove that each the concrete technical characterictic described in above-mentioned embodiment can carry out arbitrary combination by any suitable manner, it falls within the scope disclosed in this invention equally.In addition, also can carry out arbitrary combination between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Below describe preferred implementation of the present invention in conjunction with the accompanying drawings in detail; but; the present invention is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.For example, water-supply line and discharge pipe line can be connected to the water inlet pipe 2a and the rising pipe 3a of top petticoat pipe, perhaps water-supply line and discharge pipe line be connected to the water inlet pipe 2b and the rising pipe 3b of bottom petticoat pipe.
Claims (11)
1. water-cooled movable gas hood, it is characterized in that, this water-cooled movable gas hood comprises top petticoat pipe and bottom petticoat pipe, described top petticoat pipe and described bottom petticoat pipe comprise a plurality of annular water cooling tubes (1a) that are superimposed together separately, one water inlet pipe (2a, 2b) with a rising pipe (3a, 3b), each described annular water cooling tube (1a) is by a water inlet arm (1b) and water inlet pipe (2a, 2b) be communicated with and by an exit branch (1c) and rising pipe (3a, 3b) be communicated with, a plurality of annular water cooling tube (1a) of top petticoat pipe forms the straight tubular or the cone barrel structure of upper and lower opening with a plurality of annular water cooling tube (1a) of bottom petticoat pipe.
2. water-cooled movable gas hood according to claim 1, wherein, the water inlet pipe (2a) of described top petticoat pipe and the water inlet pipe (2b) of described bottom petticoat pipe are tightly connected and are interconnected, and the rising pipe (3a) of described top petticoat pipe and the rising pipe (3b) of described bottom petticoat pipe are tightly connected and are interconnected.
3. water-cooled movable gas hood according to claim 2, wherein, the water inlet pipe (2a) of described top petticoat pipe and the water inlet pipe (2b) of described bottom petticoat pipe removably are connected, and the rising pipe (3a) of described top petticoat pipe and the rising pipe (3b) of described bottom petticoat pipe removably are connected.
4. water-cooled movable gas hood according to claim 3, wherein, the water inlet pipe (2a) of described top petticoat pipe and the water inlet pipe (2b) of described bottom petticoat pipe are connected with screw element by flange (4), and the rising pipe (3a) of described top petticoat pipe and the rising pipe (3b) of described bottom petticoat pipe are connected with screw element by flange (4).
5. water-cooled movable gas hood according to claim 1, wherein, described top petticoat pipe and described bottom petticoat pipe have the described annular water cooling tube (1a) of equal amts separately.
6. water-cooled movable gas hood according to claim 1, wherein, in each of described top petticoat pipe and described bottom petticoat pipe, a plurality of described annular water cooling tubes (1a) weld together stackedly.
7. water-cooled movable gas hood according to claim 1, wherein, the annular water cooling tube (1a) of described top petticoat pipe bottom fits together substantially hermetically with the annular water cooling tube (1a) at petticoat pipe top, described bottom.
8. according to claim a kind of any described water-cooled movable gas hood, wherein, described annular water cooling tube (1a) is an annular.
9. water-cooled movable gas hood according to claim 1, wherein, (2a, 2b) (3a, axis 3b) is substantially parallel with the outside surface of described straight tubular or cone barrel structure with described rising pipe for described water inlet pipe.
10. according to any described water-cooled movable gas hood among the claim 1-9, wherein, described water-cooled movable gas hood also comprises annular air-supply duct (5), this annular air-supply duct (5) is arranged on the top of described top petticoat pipe, this annular air-supply duct (5) has inlet mouth and a plurality of arm (6), one end of each described arm (6) is communicated in described annular air-supply duct (5), the other end is open towards the inside of described water-cooled movable gas hood, and a plurality of described arms (6) are provided with along the circumferential interval of described annular air-supply duct (5).
11. water-cooled movable gas hood according to claim 10, wherein, the open-topped shape of the shape of described annular air-supply duct (5) and described top petticoat pipe is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271404 CN101935736B (en) | 2010-09-03 | 2010-09-03 | Water-cooling movable smoke hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271404 CN101935736B (en) | 2010-09-03 | 2010-09-03 | Water-cooling movable smoke hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101935736A true CN101935736A (en) | 2011-01-05 |
| CN101935736B CN101935736B (en) | 2012-08-29 |
Family
ID=43389299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010271404 Expired - Fee Related CN101935736B (en) | 2010-09-03 | 2010-09-03 | Water-cooling movable smoke hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101935736B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476558Y (en) * | 2001-04-19 | 2002-02-13 | 唐山钢铁集团有限责任公司 | Evaporation cooling device of steelmaking converter |
| CN2910956Y (en) * | 2006-06-12 | 2007-06-13 | 江阴海陆冶金设备制造有限公司 | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter |
| CN101566434A (en) * | 2009-06-10 | 2009-10-28 | 北京明诚技术开发有限公司 | Converter movable hood flexible ring mechanical sealing device and sealing method |
-
2010
- 2010-09-03 CN CN 201010271404 patent/CN101935736B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476558Y (en) * | 2001-04-19 | 2002-02-13 | 唐山钢铁集团有限责任公司 | Evaporation cooling device of steelmaking converter |
| CN2910956Y (en) * | 2006-06-12 | 2007-06-13 | 江阴海陆冶金设备制造有限公司 | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter |
| CN101566434A (en) * | 2009-06-10 | 2009-10-28 | 北京明诚技术开发有限公司 | Converter movable hood flexible ring mechanical sealing device and sealing method |
Non-Patent Citations (1)
| Title |
|---|
| 《炼钢转炉烟气的回收利用技术》 19910331 成立良等 炼钢转炉烟气的回收利用技术 19-21 1-11 , 1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101935736B (en) | 2012-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102203222B (en) | Highly efficient and clean gasification apparatus for carbonaceous dry powder and method thereof | |
| JP5927163B2 (en) | Pipe manufacturing method | |
| CN102401563B (en) | Water-cooling furnace cover of ladle refining furnace with high-temperature camera shooting function | |
| CN104048304A (en) | Horizontal spiral tube roller slag cooler | |
| CN103131819B (en) | Cooling structure of converting furnace oxygen lance and feed opening | |
| CN101935736B (en) | Water-cooling movable smoke hood | |
| CN202465761U (en) | Discharge opening | |
| CN203605217U (en) | CFB (circulating fluidized bed) boiler slag discharging device for burning coal gangue | |
| CN107805679B (en) | A kind of blast-furnace tuyere burn after rapid plugging method | |
| CN203869520U (en) | Stable mining and metallurgy furnace low temperature waste heat recovery system | |
| CN205188336U (en) | Converter exhaust heat boiler fire door section flue | |
| CN107604122B (en) | Movable smoke hood for converter waste heat boiler | |
| JP2019023559A (en) | Remaining heat boiler | |
| CN213810629U (en) | Hydraulic rotary split fire grate of incinerator | |
| CN205261499U (en) | Vertical fire tube boiler of high temperature | |
| CN104154513A (en) | Waste heat boiler of can-type calcinator | |
| CN207122896U (en) | A kind of coal spout coal spread wind device | |
| CN204211786U (en) | The bonnet of rotatable metallurgical furnace and there is its rotatable metallurgical furnace | |
| CN208532848U (en) | Improved converter body skirt arrangement | |
| CN206831456U (en) | A kind of quick clean steam generator | |
| CN207365082U (en) | A kind of movable gas hood for the waste heat boiler being easily installed | |
| CN109777909B (en) | Reducing joint for flue of steel-making furnace | |
| CN218937041U (en) | Wear-resistant water cooling jacket in converter waste heat boiler feed opening device | |
| CN218566201U (en) | Nested formula ash discharge structure in high temperature dust collecting equipment | |
| CN202175658U (en) | Water jacket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20160903 |