CN114381561A - Heat and smoke control system for large and medium blast furnace cast house workshop - Google Patents
Heat and smoke control system for large and medium blast furnace cast house workshop Download PDFInfo
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- CN114381561A CN114381561A CN202210078399.XA CN202210078399A CN114381561A CN 114381561 A CN114381561 A CN 114381561A CN 202210078399 A CN202210078399 A CN 202210078399A CN 114381561 A CN114381561 A CN 114381561A
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- 239000000779 smoke Substances 0.000 title claims abstract description 90
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 286
- 229910052742 iron Inorganic materials 0.000 claims abstract description 143
- 239000002893 slag Substances 0.000 claims abstract description 69
- 238000007789 sealing Methods 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 claims description 17
- 235000019504 cigarettes Nutrition 0.000 claims description 16
- 238000000605 extraction Methods 0.000 claims description 12
- 238000010079 rubber tapping Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 46
- 238000009423 ventilation Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 238000005399 mechanical ventilation Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/17—Ventilation of roof coverings not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses a heat and smoke exhaust control system for a large and medium blast furnace cast house plant, which comprises a blast furnace arranged in the center of the plant, a plurality of tapholes arranged below the blast furnace and a main ditch corresponding to the tapholes, wherein an iron ditch and a residual iron ditch are arranged along one side of the main ditch, one ends of the residual iron ditch and the iron ditch which are arranged side by side and far away from the main ditch are provided with swing nozzles, the other side of the main ditch is provided with a slag ditch, and a skimmer is arranged at the intersection of the main ditch and the slag ditch, the smoke exhaust control system comprises air suction parts arranged on the taphole, the main ditch, the iron ditch, the residual iron ditch, the slag ditch and the swing nozzles of the blast furnace and is used for exhausting heat generated by the tapholes, the main ditch, the iron ditch, the residual iron ditch and the slag ditch of the blast furnace in the plant, the invention enhances ventilation of the plant, improves the smoke dust and heat exhaust efficiency of the cast house, improves the production operation environment, and is two independent systems for dust removal and ventilation and heat exchange, the ventilation and dust removal of the factory building are realized through the coordination. The ventilation quantity of the plant machinery is reduced, and energy conservation and emission reduction are realized.
Description
Technical Field
The invention relates to the technical field of blast furnace cast house, in particular to a heat and smoke exhaust control system for a large and medium blast furnace cast house workshop.
Background
Blast furnace casting houses generate a large amount of smoke and heat during casting. Most of high-temperature smoke dust generated in the tapping process is collected by the dust collection cover and then enters the smoke treatment device, but the smoke dust cannot be completely collected due to the limitation of process conditions, and dust easily escapes from the dust collection cover. The granularity of most escaping smoke dust is smaller than micron level, the air current flows in large-volume factory buildings complicatedly, and the dust is difficult to collect. The smoke generating parts such as an iron notch, an iron runner, a slag runner, a skimmer, a swinging flow nozzle and the like are positioned below a breathing zone of an operator, and smoke with small particle size is easy to be inhaled by a human body to cause mixed dust and lung, so that the health of workers is directly influenced, and the external environment is also polluted. With the continuous development of the steel industry production and the rapid progress of the society, the problem that the unorganized emission of pollutants in a workshop is controlled and the working environment of workers is improved is urgently needed to be solved.
At present, most of dust removal of a taphole is performed by adding a dust removing cover in a stokehole closed chamber, an operator needs to enter the closed chamber for operation, the temperature in the closed chamber is high, dust pollution is serious, and danger is easily caused due to the fact that the internal environment is dark. Even if the furnace front closed chamber is dismantled, the high-temperature smoke and dust generation amount of the taphole and the main channel is large, and the common dust removing cover cannot be completely collected, so that the dust concentration of a workshop post is high, and a large amount of unorganized smoke and dust enters air to pollute the surrounding environment. Some casting houses increase the air suction volume in order to improve the capture efficiency, resulting in a great increase in energy consumption.
Most blast furnace cast house designs focus on 'dust removal', but neglect ventilation and heat exchange of factory buildings. When the blast furnace is used for tapping, the temperature of molten iron is as high as 1100 ℃, a plurality of high-temperature heat sources can be formed in a plant, the heat radiation intensity is as high as 10000W/m2, the radiation temperature of a local working area reaches 100 ℃, and the existence of high temperature and strong radiation in the plant has great influence on the health, personal safety and production efficiency of workers. Some casting houses can remove dust and ventilate and exchange heat at the same time, the thermal environment of the plant is improved to some extent, but the mechanical ventilation rate is greatly increased, so that the operation cost is increased, and a large amount of unorganized smoke dust is easily discharged into the air.
Therefore, it is necessary to further optimize the design of the ventilation and heat exchange structure design and the smoke dust treatment measures of the blast furnace cast house aiming at the defects and the requirements in the aspects of smoke control and heat extraction of the blast furnace cast house, the smoke control and heat extraction measures are formulated according to the structural characteristics of the plant and the smoke dust emission characteristics of each dust production point, and the point-by-point accurate control is realized, so that the mechanical ventilation volume and the energy consumption are reduced, the ventilation and heat extraction of the plant are enhanced, the smoke dust collecting efficiency of the cast house is improved, and the production operation environment is improved.
Disclosure of Invention
The invention aims to provide a heat and smoke exhaust control system for a large and medium blast furnace cast house workshop, which aims to solve the problems of poor ventilation and heat exhaust effects of the workshop and low smoke dust collection efficiency of the cast house.
In order to achieve the purpose, the invention provides the following technical scheme: a heat and smoke removal system for a large and medium blast furnace cast house plant comprises a blast furnace arranged in the center of the plant, a plurality of tapholes arranged below the blast furnace and a main ditch corresponding to the tapholes, wherein an iron ditch and a residual iron ditch are arranged along one side of the main ditch, the residual iron runner and the iron runner are arranged side by side, one end far away from the main runner is provided with a swing spout, the other side of the main runner is provided with a slag runner, and a skimmer arranged at the intersection of the main channel and the slag channel, wherein the smoke control system comprises a wind suction component arranged on a taphole, the main channel, the iron channel, the residual iron channel, the slag channel and the swing spout of the blast furnace, the smoke control system also comprises negative pressure equipment and a pipeline system connected between the air suction part and the negative pressure equipment, the heat-discharging device is used for discharging heat generated by a taphole, a main channel, an iron channel, a residual iron channel and a slag channel of a blast furnace in the plant.
As a preferred embodiment of the present invention: the air suction component comprises a first air suction cover group connected to the edge of the side part of the tapping hole, a second air suction cover group arranged above the main runner, a third air suction cover group arranged at the edge of the side part of the iron runner, a fourth air suction cover group arranged at the edge of the side part of the slag runner, a fifth air suction cover group arranged at the edge of the side part of the residual iron runner, a sixth air suction cover group arranged on the swing nozzle and a seventh air suction cover group arranged on the skimmer; the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover and the seventh air suction cover group are communicated with the pipeline system.
As a preferred embodiment of the present invention: the first air suction cover group at the edge of the side part of the taphole comprises two symmetrical taphole side suction covers at the edges of two sides of the taphole, a platform is arranged above the taphole at the bottom of the blast furnace, two taphole side suction covers are arranged between the platform and the taphole, two taphole side suction covers are symmetrically arranged in the direction perpendicular to the main channel and are provided with first through pipes which are connected with the pipeline system in a sealing manner at the back of the cover body.
As a preferred embodiment of the present invention: the second of main ditch top cover group that induced drafts include the afterbody with the main ditch top that the platform edge meets inhales the cover, the both sides of main ditch top suction cover are equipped with the pterygoid lamina that is on a parallel with ground and symmetry set up, main ditch top suction cover front side is followed the main ditch direction is arranged and is covered front side extension cover on the main ditch, the front end of front side extension cover sets up the fire board, the vertical ground that is close to downwards of fire board, main ditch top suction cover edge increases the side shield on perpendicular to ground, the back of main ditch top suction cover be equipped with pipe-line system realizes sealing connection's second siphunculus.
As a preferred embodiment of the present invention: the third air suction cover group at the edge of the side part of the iron runner comprises two iron runner side suction covers arranged at the side parts of the iron hooks, two first smoke blocking assemblies are arranged on the iron runner, one first smoke blocking assembly is arranged between the two iron runner side suction covers, the other first smoke blocking assembly is arranged between the iron runner side suction cover and the swing spout, and a third three-way pipe in sealing connection with the pipeline system is arranged at the back of the iron runner side suction cover.
As a preferred embodiment of the present invention: the fourth air suction cover group at the edge of the lateral part of the slag runner comprises two slag runner side suction covers arranged on the lateral part of the slag runner, two second smoke blocking assemblies are arranged on the slag runner, one of the second smoke blocking assemblies is arranged between the two slag runner side suction covers, the other second smoke blocking assembly is arranged at the tail end of the slag runner far away from the main runner, and a fourth through pipe connected with the pipeline system in a sealing manner is arranged on the back of the slag runner side suction cover.
As a preferred embodiment of the present invention: the fifth air suction cover group at the edge of the side part of the residual iron runner comprises a residual iron runner side suction cover at the side part of the residual iron runner, and the back of the residual iron runner side suction cover is provided with a fifth through pipe connected with the pipeline system in a sealing manner.
As a preferred embodiment of the present invention: the sixth suction hood group on the swing stem bar is including installing the first swing stem bar side suction hood of swing stem bar top is with being located two second swing stem bar side suction hoods of first swing stem bar side suction hood both sides, first swing stem bar side suction hood is just right the export of iron runner, two the second swing stem bar side suction hood is located the top of the both sides export of swing stem bar respectively, first swing stem bar side suction hood and two the back of second swing stem bar side suction hood all be equipped with pipeline system realizes sealing connection's sixth siphunculus.
As a preferred embodiment of the present invention: seventh suction hood on the skimmer includes that the card box is in skimmer cover on the skimmer, the skimmer cover closes including the lid on the main trough and one end with the first skimmer cover body of keeping off the fire board laminating, be connected with second skimmer cover body on the first skimmer cover body, first skimmer cover body and second skimmer cover body coupling are "T" font, just first skimmer cover body is followed the main trough direction is extended, second skimmer cover body is followed iron runner opposite direction arranges, the afterbody below of second skimmer cover body is equipped with the skimmer suction opening, the back in skimmer suction opening all be equipped with pipe-line system realizes sealing connection's seventh siphunculus.
As a preferred embodiment of the present invention: first fender cigarette subassembly and second keep off cigarette subassembly and all include the base and install the fender cigarette board on the base, base appearance laminating channel and bottom are left and are convenient for molten iron and scum flow and pass through trapezoidal opening.
As a preferred embodiment of the present invention: the heat extraction system is including setting up the air inlet door and window of the lateral wall below of factory building reaches first roof vent and the second roof vent that the factory building top set up, the top of factory building is triangle-shaped, first roof vent with second roof vent symmetrical arrangement.
Compared with the prior art, the invention has the beneficial effects that: dust removal and ventilation heat exchange are two independent systems, and ventilation and dust removal of a workshop are realized through coordination. The ventilation quantity of the plant machinery is reduced, and energy conservation and emission reduction are really realized.
The factory roof is in a totally-enclosed design, and pollution and substandard unorganized smoke emission caused by the unorganized smoke emission to the external environment are prevented.
The roof forces the mechanical ventilation opening to set up two roofs at the factory building top, improves factory building thermal environment through mechanical ventilation heat extraction, and the partial secondary smoke and dust of entrapment simultaneously, roof force the mechanical ventilation opening according to dust removal operating mode and external environment change dynamic adjustment amount of wind, reach the optimal energy-conserving effect when guaranteeing factory building ventilation heat transfer.
The smoke and dust generating source in the blast furnace casting house is refined and accurately controlled in a point-by-point mode, the tapping hole is provided with a side suction cover, the main channel is provided with a top suction cover, the skimmer is provided with a skimmer cover, the slag runner is provided with a side suction cover and a smoke baffle, and the swing spout is provided with a side suction cover to realize zero smoke and dust emission.
The main ditch top suction hood is designed in an open mode, and operators do not need to enter a furnace front closed chamber which is seriously polluted, high in temperature and dangerous.
The main ditch top suction hood is additionally provided with two side wing plates, a front side extension hood, a side baffle, a fire baffle and the like on the basis of the traditional dust hood, and the optimized top suction hood can effectively improve the collecting efficiency and prevent the smoke from overflowing after the verification of numerical simulation calculation.
The dust removal pipeline above the top suction cover is a double-channel pipeline system, the air quantity of the top suction cover can be accurately adjusted, the air suction quantity of each top suction cover is reasonably distributed when the tapping hole is switched, and the smoke dust overflow at the last stage of tapping is effectively controlled.
The skimmer cover is additionally provided with the skimmer cover part, so that the air suction opening and the dust removal air pipe are prevented from being exposed outside, the safety is high, the appearance is attractive, and the smoke dust collecting effect is better.
The middle end and the tail end of the slag iron channel are provided with smoke baffles, so that smoke generated in the flowing process of the molten iron and the iron slag is prevented from escaping from the two ends of the channel. The air suction amount of the side suction hood of the slag iron runner is dynamically adjusted according to the working condition, so that energy conservation and emission reduction are realized.
Drawings
FIG. 1 is a schematic view of the external structure of a large and medium-sized blast furnace cast house plant according to the present invention;
FIG. 2 is a front view of a large and medium blast furnace cast house plant of the present invention;
FIG. 3 is a top view of a large and medium blast furnace cast house plant of the present invention;
FIG. 4 is a first structural schematic diagram of a heat and smoke exhaust control system of a large and medium-sized blast furnace cast house plant according to the present invention;
FIG. 5 is a second structural schematic diagram of a heat and smoke removal system for a large and medium-sized blast furnace cast house plant of the present invention;
FIG. 6 is a third structural schematic view of a heat and smoke exhaust system of a large and medium-sized blast furnace cast house plant of the present invention;
FIG. 7 is a first structural schematic view of a main trench top suction hood of a heat and smoke control system of a factory building of a large and medium-sized blast furnace cast house according to the present invention;
FIG. 8 is a first structural schematic diagram of a skimmer cover of a heat-extraction and smoke-control system of a large and medium-sized blast furnace cast house plant of the present invention;
FIG. 9 is a second structural view of a main trench top suction hood of a heat and smoke control system of a factory building of a large and medium-sized blast furnace cast house according to the present invention;
FIG. 10 is a second schematic structural view of a skimmer cover of a heat-removal and smoke-control system of a large and medium-sized blast furnace cast house plant of the present invention;
FIG. 11 is a first structural diagram of a first smoke-blocking component and a second smoke-blocking component of a heat-extraction smoke-control system of a large and medium-sized blast furnace cast house plant of the invention;
fig. 12 is a second structural diagram of the first smoke-blocking component and the second smoke-blocking component of the heat-extraction smoke-control system of the large and medium-sized blast furnace cast house plant of the invention.
In the figure: 100. factory building; 101. an air inlet door and window; 103. a first roof vent; 104. a second roof vent; 200. a pipeline system control device; 201. a piping system; 300. a blast furnace; 301. a main trench; 302. a slag runner; 303. an iron runner; 304. a residual iron runner; 305. oscillating the spout; 400. a taphole side suction cover; 401. a main ditch top suction cover; 4012. a wing plate; 4013. a side baffle; 4014. a front side extension cover; 4015. a fire shield; 402. a skimmer cover; 4021. a first skimmer cover body; 4022. a second skimmer cover body; 4023. a skimmer suction opening; 403. a slag runner side suction cover; 404. a second smoke barrier assembly; 4041. a base; 4042. a smoke baffle; 405. a scrap iron groove side suction cover; 406. a side suction cover of the iron runner; 407. a first smoke barrier assembly; 408. a first oscillating spout side suction hood; 409. a second oscillating spout side suction hood; 500. a platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terms "comprises/comprising," "consisting of … …," or any other variation, are intended to cover a non-exclusive inclusion, such that a product, device, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, device, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship as shown in the drawings, which is meant only to facilitate describing the invention and to simplify the description, and do not indicate or imply that the referenced device, component, or structure must have a particular orientation, be constructed or operated in a particular orientation, and is not to be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1-12, an embodiment of the present invention is shown: a heat and smoke removal system for a large and medium blast furnace cast house factory building comprises a blast furnace 300 arranged at the center of the factory building 100, a plurality of tapholes arranged below the blast furnace 300 and a main channel 301 corresponding to the tapholes, an iron channel 303 and a residual iron channel 304 are arranged along one side of the main channel 301, one end of the residual iron channel 304 and one end of the iron channel 303 which are parallel and far away from the main channel 301 are provided with swing nozzles 305, the other side of the main channel 301 is provided with a slag channel 302, and a skimmer is arranged at the intersection of the main channel 301 and the slag channel 302, the smoke control system comprises air suction parts arranged on the tapholes, the main channel 301, the iron channel 303, the residual iron channel 304, the slag channel 302 and the swing nozzles 305 of the blast furnace 300, the smoke control system further comprises negative pressure equipment and a pipeline system 201 connected between the air suction parts and the negative pressure equipment, and is used for discharging heat generated by the tapholes, the main channel 301, the iron channel 303, the residual iron channel 304, the slag channel 302 and the swing nozzles 305 of the blast furnace 300 in the factory building 100, the pipeline system 201 may be composed of a main pipe and a plurality of branch pipes, and the pipeline system control device 200 is disposed in the plant 100 for controlling the pipeline system 201, but this embodiment is not limited thereto, for example, valve components are additionally disposed on the plurality of branch pipes to control the air suction volume of each air suction component, and the present invention can be applied to other pipeline laying methods, and other pipeline laying methods can be designed according to actual use, because the pipeline system 201 and the pipeline system control device 200 are conventional air supply or air suction devices of the existing plant 100, the present invention only additionally arranges air suction components at each position in the plant 100 of the cast house to realize ventilation and dust removal of the plant 100, specifically as follows:
referring to fig. 1-12, a heat and smoke exhaust system for a large and medium sized blast furnace cast house includes a blast furnace 300 disposed at the center of the plant 100, a plurality of tapholes disposed below the blast furnace 300, and a main runner 301 corresponding to the tapholes, wherein an iron runner 303 and a residual iron runner 304 are disposed along one side of the main runner 301, the residual iron runner 304 and the iron runner 303 are disposed side by side at an end away from the main runner 301, a swing spout 305 is disposed at an end of the residual iron runner 304 and the iron runner 303, the other side of the main runner 301 is disposed with a slag runner 302, and a skimmer is disposed at the intersection of the main runner 301 and the slag runner 302, the smoke exhaust system includes an air suction component disposed on the taphole, the main runner 301, the iron runner 303, the residual iron runner 304, the slag runner 302, and the swing spout 305 of the blast furnace 300, the smoke exhaust system further includes a negative pressure device and a pipeline system connected between the air suction component and the negative pressure device, and the iron runner 301, the main runner 301, the slag runner, the negative pressure device, and the negative pressure device are disposed on the iron runner 201, and the iron runner of the blast furnace 300, and the iron runner 301, and the iron runner 201, and the main runner 201, and the iron runner 201, and the blast furnace 300, and the main runner, and the slag runner, are disposed in the large and medium sized blast furnace cast house, The residual iron runner 304, the slag runner 302 and the swing spout 305 generate heat to be discharged, and the invention provides an embodiment that: the air suction component comprises a first air suction cover group connected with the side edge of the taphole, a second air suction cover group arranged above the main channel 301, a third air suction cover group arranged at the side edge of the iron channel 303, a fourth air suction cover group arranged at the side edge of the slag channel 302, a fifth air suction cover group arranged at the side edge of the residual iron channel 304, a sixth air suction cover group arranged on the swing nozzle 305 and a seventh air suction cover group arranged on the skimmer; the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover group and the seventh air suction cover group are communicated with the pipeline system 201, and smoke generation sources in the blast furnace 300 cast house are refined and accurately controlled in a point-by-point mode through the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover group and the seventh air suction cover group, so that zero emission of smoke is realized.
Referring to fig. 1-12, a heat and smoke exhaust system for a large and medium sized blast furnace cast house includes a blast furnace 300 disposed at the center of the plant 100, a plurality of tapholes disposed below the blast furnace 300, and a main runner 301 corresponding to the tapholes, wherein an iron runner 303 and a residual iron runner 304 are disposed along one side of the main runner 301, the residual iron runner 304 and the iron runner 303 are disposed side by side at an end away from the main runner 301, a swing spout 305 is disposed at an end of the residual iron runner 304 and the iron runner 303, the other side of the main runner 301 is disposed with a slag runner 302, and a skimmer is disposed at the intersection of the main runner 301 and the slag runner 302, the smoke exhaust system includes an air suction component disposed on the taphole, the main runner 301, the iron runner 303, the residual iron runner 304, the slag runner 302, and the swing spout 305 of the blast furnace 300, the smoke exhaust system further includes a negative pressure device and a pipeline system connected between the air suction component and the negative pressure device, and the iron runner 301, the main runner 301, the slag runner, the negative pressure device, and the negative pressure device are disposed on the iron runner 201, and the iron runner of the blast furnace 300, and the iron runner 301, and the iron runner 201, and the main runner 201, and the iron runner 201, and the blast furnace 300, and the main runner, and the slag runner, are disposed in the large and medium sized blast furnace cast house, The residual iron runner 304, the slag runner 302 and the swing spout 305 generate heat to be discharged, and the invention provides an embodiment that: the air suction component comprises a first air suction cover group connected with the side edge of the taphole, a second air suction cover group arranged above the main channel 301, a third air suction cover group arranged at the side edge of the iron channel 303, a fourth air suction cover group arranged at the side edge of the slag channel 302, a fifth air suction cover group arranged at the side edge of the residual iron channel 304, a sixth air suction cover group arranged on the swing nozzle 305 and a seventh air suction cover group arranged on the skimmer; wherein the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover group and the seventh air suction cover group are all communicated with the pipeline system 201, the invention provides an embodiment of the first air suction cover group: the first air suction cover group at the edge of the side part of the taphole comprises two taphole side suction covers 400 which are symmetrically arranged at the edge of two sides of the taphole, a platform 500 is arranged above the taphole at the bottom of the blast furnace 300, the two taphole side suction covers 400 are arranged between the platform 500 and the taphole, the two taphole side suction covers 400 are symmetrically arranged in the direction vertical to the main channel 301, the back of the cover body is provided with a first through pipe which is hermetically connected with the pipeline system 201, the air volume of a single taphole side suction cover 400 is 3-10 m3/h, and the height is 0.5-1.5m above the taphole, so that a large amount of smoke generated by the taphole 5 can be collected.
Referring to fig. 1-12, the air suction component includes a first air suction hood group connected to the side edge of the taphole, a second air suction hood group disposed above the main runner 301, a third air suction hood group disposed at the side edge of the iron runner 303, a fourth air suction hood group disposed at the side edge of the slag runner 302, a fifth air suction hood group disposed at the side edge of the residual iron runner 304, a sixth air suction hood group disposed on the swing nozzle 305, and a seventh air suction hood group disposed on the skimmer; wherein the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover group and the seventh air suction cover group are all communicated with the pipeline system 201, the invention provides an embodiment of the second air suction cover group: the second air suction cover group above the main ditch 301 comprises a main ditch top suction cover 401, the tail part of the main ditch top suction cover 401 is connected with the edge of the platform 500, two sides of the main ditch top suction cover 401 are provided with wing plates 4012 which are parallel to the ground and are symmetrically arranged, the front side of the main ditch top suction cover 401 is arranged along the direction of the main ditch 301 and covers a front side extension cover 4014 on the main ditch 301, the front end of the front side extension cover 4014 is provided with a fire baffle 4015, the fire baffle 4015 is vertically and downwards close to the ground and is used for controlling molten iron splashing generated during iron tapping, the edge of the main ditch top suction cover 401 is additionally provided with a side baffle 4013 which is vertical to the ground, the back of the main ditch top suction cover 401 is provided with a second through pipe which is in sealing connection with a pipeline system 201, and the height of the side baffle 4013 is 0.8-1.2m, so as to prevent the suction range of the main ditch top suction cover 401 from expanding outwards in an umbrella shape;
in addition, the dust removal pipeline of cover 401 top is inhaled on the main ditch top can adopt double-circuit piping system, the high temperature smoke and dust of cover 401 entrapment is inhaled on the main ditch top at first upwards gets into the person in charge, then get into the branch pipe of two parallels behind 90 return bends change direction, be equipped with electric valve on the branch pipe, the conventional single pipeline advantage of double-circuit piping system comparison lies in the accurate regulation amount of wind of accessible electric valve, can each main ditch top of reasonable distribution inhale the induced drafts volume of cover 401 when the taphole switches, the last stage smoke and dust of effective control iron tapping is excessive.
Referring to fig. 1-12, the air suction component includes a first air suction hood group connected to the side edge of the taphole, a second air suction hood group disposed above the main runner 301, a third air suction hood group disposed at the side edge of the iron runner 303, a fourth air suction hood group disposed at the side edge of the slag runner 302, a fifth air suction hood group disposed at the side edge of the residual iron runner 304, a sixth air suction hood group disposed on the swing nozzle 305, and a seventh air suction hood group disposed on the skimmer; wherein the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover group and the seventh air suction cover group are all communicated with the pipeline system 201, the invention provides an embodiment of the third air suction cover: the group of the side edges of the iron runner 303 comprises two iron runner side suction covers 406 arranged at the side parts of the iron hooks, two first smoke blocking assemblies 407 are arranged on the iron runner 303, one first smoke blocking assembly 407 is arranged between the two iron runner side suction covers 406, the other first smoke blocking assembly 407 is arranged between the iron runner side suction cover 406 and the swing spout 305, and a third pipe which is in sealing connection with the pipeline system 201 is arranged on the back surface of the iron runner side suction cover 406.
Referring to fig. 1-12, the air suction component includes a first air suction hood group connected to the side edge of the taphole, a second air suction hood group disposed above the main runner 301, a third air suction hood group disposed at the side edge of the iron runner 303, a fourth air suction hood group disposed at the side edge of the slag runner 302, a fifth air suction hood group disposed at the side edge of the residual iron runner 304, a sixth air suction hood group disposed on the swing nozzle 305, and a seventh air suction hood group disposed on the skimmer; wherein the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover and the seventh air suction cover group are all communicated with the pipeline system 201, the invention provides an embodiment of the fourth air suction cover: the group of the side edge of the slag runner 302 comprises two slag runner side suction hoods 403 arranged at the side of the slag runner 302, two slag runner side suction hoods 403 are arranged on the slag runner 302, one second smoke blocking component 404 is arranged between the two slag runner side suction hoods 403, the other second smoke blocking component 404 is arranged at the tail end of the slag runner 302 far away from the main runner 301, and a fourth through pipe in sealing connection with the pipeline system 201 is arranged at the back of the slag runner side suction hood 403.
Referring to fig. 1-12, the air suction component includes a first air suction hood group connected to the side edge of the taphole, a second air suction hood group disposed above the main runner 301, a third air suction hood group disposed at the side edge of the iron runner 303, a fourth air suction hood group disposed at the side edge of the slag runner 302, a fifth air suction hood group disposed at the side edge of the residual iron runner 304, a sixth air suction hood group disposed on the swing nozzle 305, and a seventh air suction hood group disposed on the skimmer; wherein the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover and the seventh air suction cover group are all communicated with the pipeline system 201, the invention provides an embodiment of the fifth air suction cover group: the edge of the side part of the residual iron runner 304 comprises a residual iron runner side suction cover 405 of the side part of the residual iron runner 304, and the back of the residual iron runner side suction cover 405 is provided with a fifth through pipe which is in sealing connection with the pipeline system 201.
Referring to fig. 1-12, the air suction component includes a first air suction hood group connected to the side edge of the taphole, a second air suction hood group disposed above the main runner 301, a third air suction hood group disposed at the side edge of the iron runner 303, a fourth air suction hood group disposed at the side edge of the slag runner 302, a fifth air suction hood group disposed at the side edge of the residual iron runner 304, a sixth air suction hood group disposed on the swing nozzle 305, and a seventh air suction hood group disposed on the skimmer; wherein the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover and the seventh air suction cover group are all communicated with the pipeline system 201, the invention provides an embodiment of the sixth air suction cover: the group on the swing nozzle 305 comprises a first swing nozzle side suction cover 408 arranged above the swing nozzle 305 and two second swing nozzle side suction covers 409 positioned at two sides of the first swing nozzle side suction cover 408, the first swing nozzle side suction cover 408 is over against the outlet of the iron runner 303, the two second swing nozzle side suction covers 409 are respectively positioned above the outlets at two sides of the swing nozzle 305, the back surfaces of the first swing nozzle side suction cover 408 and the two second swing nozzle side suction covers 409 are respectively provided with a sixth through pipe which is hermetically connected with the pipeline system 201, the first swing nozzle side suction cover (408) is normally open, the air volume is 5-10 km 3/h, the second swing spout side suction covers 409 on two sides are controlled to be opened and closed according to production conditions, and the air volume is 5-10 ten thousand m3/h and is used for collecting smoke dust generated when molten iron falls into a molten iron tank.
Referring to fig. 1-12, the air suction component includes a first air suction hood group connected to the side edge of the taphole, a second air suction hood group disposed above the main runner 301, a third air suction hood group disposed at the side edge of the iron runner 303, a fourth air suction hood group disposed at the side edge of the slag runner 302, a fifth air suction hood group disposed at the side edge of the residual iron runner 304, a sixth air suction hood group disposed on the swing nozzle 305, and a seventh air suction hood group disposed on the skimmer; wherein the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover and the seventh air suction cover group are all communicated with the pipeline system 201, the invention provides an embodiment of the seventh air suction cover: the skimmer cover 402 comprises a skimmer cover 402 which is clamped on the skimmer and comprises a card box, the skimmer cover 402 comprises a first skimmer cover body 4021 which is covered on a main groove 301 and one end of which is attached to a fire baffle 4015, a second skimmer cover body 4022 is connected to the first skimmer cover body 4021, the length of the second skimmer cover body 4022 is slightly smaller, the first skimmer cover body 4021 and the second skimmer cover body 4022 are connected in a T shape, the first skimmer cover body 4021 extends along the main groove 301, the second skimmer cover body 4022 is arranged along the opposite direction of an iron groove 303, a skimmer air suction opening 4023 is arranged below the tail part of the second skimmer cover body 4022, a seventh through pipe which is in sealed connection with a pipeline system 201 is arranged on the back surface of the skimmer air suction opening 4023, the skimmer air suction opening 4023 is used in the skimmer cover 402, and the air suction amount is 5-10 m 3/h.
Alternatively, referring to fig. 1-12, an embodiment of the present invention is provided: first cigarette subassembly 407 and second cigarette subassembly 404 all include base 4041 and install the cigarette board 4042 that keeps off on base 4041, base 4041 appearance laminating channel and bottom are left to be convenient for molten iron and iron slag to flow and are passed through trapezoidal opening, it has light-duty fire-resistant notes material to keep off cigarette board 4042 lower part both sides, play the effect that supports cigarette board 4042 and erect in the channel when protection keeps off cigarette board 4042, cigarette board 4042 main part material is the steel sheet, a flue gas for preventing molten iron and iron slag from escaping from the channel both ends at the in-process production that flows.
Alternatively, referring to fig. 1-3, an embodiment of the present invention is provided: the heat extraction system comprises an air inlet door window 101 arranged below the side wall of the factory building 100, a first roof vent 103 and a second roof vent 104 arranged at the top of the factory building 100, the top of the factory building 100 is triangular, the first roof vent 103 and the second roof vent 104 are symmetrically arranged, and air inducing equipment, such as fan assemblies and the like, can be arranged on the air inlet door window 101 or the first roof vent 103 or the second roof vent 104 to accelerate ventilation of the factory building 100.
The environment-friendly control system for the large and medium blast furnace cast house 100 can reduce energy consumption, strengthen ventilation and heat extraction of the plant 100, improve the smoke dust collecting efficiency of the cast house, improve the production operation environment, realize ventilation and dust removal of the plant 100 through coordination effect, and realize the purpose of dust removal and dust removal of the plant 100. The mechanical ventilation rate of the factory building 100 is reduced, energy conservation and emission reduction are really realized, and the smoke generation source in the blast furnace 300 cast house is refined and accurately controlled in a point-by-point manner through the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover and the seventh air suction cover group, so that zero emission of smoke is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (11)
1. The utility model provides a large and medium-sized blast furnace cast house factory building heat extraction accuse cigarette system, the cast house is including setting up at the blast furnace at factory building center, arranging in a plurality of tapholes of blast furnace below and corresponding to the main ditch of taphole is followed iron runner and incomplete iron runner have been seted up to main ditch one side, incomplete iron runner and iron runner are side by side and keep away from the one end of main ditch is provided with the swing faucet, and the opposite side that is located the main ditch is equipped with the slag runner to and the skimmer that sets up in the intersection of main ditch and slag runner, its characterized in that: the accuse cigarette system is including setting up the part that induced drafts on taphole, main runner, iron runner, incomplete iron runner, slag runner and the swing stem of blast furnace, the accuse cigarette system still includes negative pressure equipment and connects induced drafts the part with pipe-line system between the negative pressure equipment, it be used for with the heat that taphole, main runner, iron runner, incomplete iron runner and the slag runner of blast furnace produced in the factory building is discharged.
2. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 1, wherein: the air suction component comprises a first air suction cover group connected to the edge of the side part of the tapping hole, a second air suction cover group arranged above the main runner, a third air suction cover group arranged at the edge of the side part of the iron runner, a fourth air suction cover group arranged at the edge of the side part of the slag runner, a fifth air suction cover group arranged at the edge of the side part of the residual iron runner, a sixth air suction cover group arranged on the swing nozzle and a seventh air suction cover group arranged on the skimmer; the first air suction cover group, the second air suction cover group, the third air suction cover group, the fourth air suction cover group, the fifth air suction cover group, the sixth air suction cover and the seventh air suction cover group are communicated with the pipeline system.
3. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 2, wherein: the first air suction cover group at the edge of the side part of the taphole comprises two symmetrical taphole side suction covers at the edges of two sides of the taphole, a platform is arranged above the taphole at the bottom of the blast furnace, two taphole side suction covers are arranged between the platform and the taphole, two taphole side suction covers are symmetrically arranged in the direction perpendicular to the main channel and are provided with first through pipes which are connected with the pipeline system in a sealing manner at the back of the cover body.
4. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 3, wherein: the second of main ditch top cover group that induced drafts include the afterbody with the main ditch top that the platform edge meets inhales the cover, the both sides of main ditch top suction cover are equipped with the pterygoid lamina that is on a parallel with ground and symmetry set up, main ditch top suction cover front side is followed the main ditch direction is arranged and is covered front side extension cover on the main ditch, the front end of front side extension cover sets up the fire board, the vertical ground that is close to downwards of fire board, main ditch top suction cover edge increases the side shield on perpendicular to ground, the back of main ditch top suction cover be equipped with pipe-line system realizes sealing connection's second siphunculus.
5. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 4, wherein: the third air suction cover group at the edge of the side part of the iron runner comprises two iron runner side suction covers arranged at the side parts of the iron hooks, two first smoke blocking assemblies are arranged on the iron runner, one first smoke blocking assembly is arranged between the two iron runner side suction covers, the other first smoke blocking assembly is arranged between the iron runner side suction cover and the swing spout, and a third three-way pipe in sealing connection with the pipeline system is arranged at the back of the iron runner side suction cover.
6. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 5, wherein: the fourth air suction cover group at the edge of the lateral part of the slag runner comprises two slag runner side suction covers arranged on the lateral part of the slag runner, two second smoke blocking assemblies are arranged on the slag runner, one of the second smoke blocking assemblies is arranged between the two slag runner side suction covers, the other second smoke blocking assembly is arranged at the tail end of the slag runner far away from the main runner, and a fourth through pipe connected with the pipeline system in a sealing manner is arranged on the back of the slag runner side suction cover.
7. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 2, wherein: the fifth air suction cover group at the edge of the side part of the residual iron runner comprises a residual iron runner side suction cover at the side part of the residual iron runner, and the back of the residual iron runner side suction cover is provided with a fifth through pipe connected with the pipeline system in a sealing manner.
8. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 2, wherein: the sixth suction hood group on the swing stem bar is including installing the first swing stem bar side suction hood of swing stem bar top is with being located two second swing stem bar side suction hoods of first swing stem bar side suction hood both sides, first swing stem bar side suction hood is just right the export of iron runner, two the second swing stem bar side suction hood is located the top of the both sides export of swing stem bar respectively, first swing stem bar side suction hood and two the back of second swing stem bar side suction hood all be equipped with pipeline system realizes sealing connection's sixth siphunculus.
9. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 4, wherein: seventh suction hood on the skimmer includes that the card box is in skimmer cover on the skimmer, the skimmer cover closes including the lid on the main trough and one end with the first skimmer cover body of keeping off the fire board laminating, be connected with second skimmer cover body on the first skimmer cover body, first skimmer cover body and second skimmer cover body coupling are "T" font, just first skimmer cover body is followed the main trough direction is extended, second skimmer cover body is followed iron runner opposite direction arranges, the afterbody below of second skimmer cover body is equipped with the skimmer suction opening, the back in skimmer suction opening all be equipped with pipe-line system realizes sealing connection's seventh siphunculus.
10. The heat and smoke removal system for the large and medium-sized blast furnace cast house factory building according to claim 6, wherein: first fender cigarette subassembly and second keep off cigarette subassembly and all include the base and install the fender cigarette board on the base, base appearance laminating channel and bottom are left and are convenient for molten iron and scum flow and pass through trapezoidal opening.
11. The large and medium sized blast furnace cast house heat and smoke removal system according to any one of claims 1 to 10, wherein: the heat extraction system is including setting up the air inlet door and window of the lateral wall below of factory building reaches first roof vent and the second roof vent that the factory building top set up, the top of factory building is triangle-shaped, first roof vent with second roof vent symmetrical arrangement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078399.XA CN114381561A (en) | 2022-01-24 | 2022-01-24 | Heat and smoke control system for large and medium blast furnace cast house workshop |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210078399.XA CN114381561A (en) | 2022-01-24 | 2022-01-24 | Heat and smoke control system for large and medium blast furnace cast house workshop |
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| CN114381561A true CN114381561A (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210078399.XA Pending CN114381561A (en) | 2022-01-24 | 2022-01-24 | Heat and smoke control system for large and medium blast furnace cast house workshop |
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Application publication date: 20220422 |
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