CN108504809A - A kind of medium and small blast furnace cast house mill construction system - Google Patents
A kind of medium and small blast furnace cast house mill construction system Download PDFInfo
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- CN108504809A CN108504809A CN201810641733.1A CN201810641733A CN108504809A CN 108504809 A CN108504809 A CN 108504809A CN 201810641733 A CN201810641733 A CN 201810641733A CN 108504809 A CN108504809 A CN 108504809A
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- blast furnace
- dust
- medium
- mill construction
- flue gas
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- 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
- C21B7/22—Dust arresters
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
Abstract
The present invention relates to a kind of medium and small blast furnace cast house mill construction systems comprising mill construction, ventilating and purifying air system and medium and small blast furnace tap a blast furnace field structure；Mill construction includes workshop top (2) and multiple enclosings (3), and mill construction is closed；Ventilating and purifying air system includes elongated type air inlet (4), the medium and small blast furnace field structure that taps a blast furnace includes blast furnace (1), blast furnace (1) is arranged in the side of mill construction, it is equipped with the elongated type air inlet (4) in the bottom for the other side enclosing that the tapping hole of blast furnace (1) is just facing, extraneous fresh air is sent into from the elongated type air inlet along mill construction bottom level, ventilating and purifying air system is pushed to and trap and outer arrange the medium and small blast furnace dust-laden high-temperature flue gas caused by field structure that taps a blast furnace.The system can effectively improve workshop interior air-flow tissue, optimize ventilation volume, improves smoke-dust arresting efficiency, prevents smoke-dust from escaping.
Description
Technical field
The present invention relates to a kind of medium and small blast furnace cast house mill construction systems, belong to ironmaking heavily contaminated workshop field, specifically
It is related to a kind of mill construction and ventilating and purifying air system of medium and small blast furnace cast house.
Background technology
Heat size is in 2500m3Medium and small blast furnace below 60% or more accounting in China's iron-smelter is middle-size and small-size iron and steel enterprise
Main blast furnace design to be used.Its cast house mill construction is full open model or semi open model, and majority is provided only with ceiling or skylight,
It is vented using gravity-flow ventilation, job platform semi-outdoor.
Tap a blast furnace in blast furnace opening, stifled iron notch and molten iron flow during will produce a large amount of high-temperature flue gas and smoke-dust,
Airborne dust point is mainly distributed on tapping hole, iron runner, minute iron runner, hot-metal bottle etc..Not only smoke discharge amount is big, post contains in cast house
Dust concentration is high, and (molten iron per ton generates 2.5kg smoke-dusts, and operation area dust content is up to 2-3g/m3), and high-temperature flue gas makes tobacco powder
Dirt is in disperse state, easily escapes.In addition blast furnace casting often, the time it is long so that large area is by tobacco powder in cast house
Dirt, heat radiation and CO, SO2The pollution of equal pernicious gases, production operation inclement condition influence the health of worker serious.
Meanwhile a large amount of smoke-dusts are diffused to from workshop surrounding and roof in air, and plant environment is caused to pollute.Therefore, working as front ring
Under the increasingly stringent situation of guaranteed request, for the dust removal by ventilation problem of medium and small blast furnace cast house, it is necessary to progress of adopting an effective measure
It administers, to improve operating environment, prevention smoke-dust escapes.
The ventilating and purifying air system of most medium and small blast furnace cast houses only sets a suspended hood in each hot-metal bottle position, and valve is cut
It changes, is used alternatingly.And a larger top draft hood is designed in the top of tapping hole and sow, trap the dust-laden high temperature of tapping hole
Flue gas.Due to other force ventilation measures, cause cast house platform without Leads to new breeze, heat exchange efficiency is low in workshop, part
The high temperature that heat radiation generates influences normal operation.Simultaneously as without effective air current composition, smoke-dust diffusion is serious, dedusting
The dust removing effects that cover arresting efficiency is low, cast house is whole are poor.In addition workshop surrounding lacks enclosing, and most smoke-dusts are in high-temperature flue gas
It is escaped in environment outside workshop top and surrounding in the form of inorganization under effect, causes serious atmosphere pollution.
Therefore, it is necessary to which the smoke-dust discharge of the workshop form and process of tapping a blast furnace for existing medium and small blast furnace cast house is special
Point redesigns mill construction and deduster arrangement, optimizes workshop interior air-flow tissue and dust removal by ventilation form, to change
Kind production operation environment, improves smoke-dust arresting efficiency, prevents smoke-dust from escaping.
Invention content
The present invention provides a kind of mill constructions and ventilating and purifying air system of medium and small blast furnace cast house, it is intended to solve above-mentioned ask
Topic.
The present invention relates to a kind of medium and small blast furnace cast house mill construction systems comprising mill construction, ventilating and purifying air system
It taps a blast furnace field structure with medium and small blast furnace；Mill construction includes workshop top and multiple enclosings, and mill construction is closed, and workshop top is non-
Sinkage type structure；Ventilating and purifying air system includes air inlet, preferably elongated type air inlet, and medium and small blast furnace taps a blast furnace field structure including high
The side inside mill construction is arranged in stove, blast furnace, and institute is equipped in the bottom for the other side enclosing that the tapping hole of blast furnace is just facing
The air inlet stated, extraneous fresh air are sent into along mill construction bottom level from the air inlet, medium and small blast furnace are tapped a blast furnace field structure institute
The dust-laden high-temperature flue gas of generation pushes to ventilating and purifying air system and trap simultaneously outer arrange.
Wherein, the section on workshop top is trapezium structure, and there are four enclosing tools, and respectively front side, rear side, left and right side are enclosed
The left side inside mill construction is arranged in gear, blast furnace, and on right side, the bottom of enclosing is equipped with the elongated type air inlet.
Wherein, the medium and small blast furnace field structure that taps a blast furnace further includes the tapping hole of blast furnace, sow, iron runner and slag runner, blast furnace is divided to set
It sets in the left side of mill construction, close to left side enclosing, blast furnace iron notch is just facing right side wall and keeping off, and blast furnace iron notch connects main iron
Ditch, sow include horizontal segment and vertical section, the horizontal segment of sow towards right side enclosing direction horizontal extension, horizontal segment
End connects vertical section, and vertical section extends towards the direction of front side enclosing, and the end of vertical section connects multiple points of iron runners, preferably
Three, iron runner is divided also to extend towards the direction of front side enclosing；Slag runner connects the horizontal segment of sow and towards the side of rear side enclosing
To extension, and it is vertical with the direction that the horizontal segment of sow extends.
Wherein, ventilating and purifying air system further includes top draft hood, secondary petticoat pipe, roof cover, side-draught hood and hot-metal bottle cover；It is described into
Air port is arranged in the enclosing bottom on right side, and extends along the enclosing bottom on entire right side, and the air inlet and blast furnace
Tapping hole it is positioned opposite；Workshop top is equipped with roof cover, and roof cover is arranged on the right side of the blast furnace, for trapping sow
Fang Hanchen high-temperature flue gas prevents aggregation of the smoke-dust at the top of workshop and escapes.
Wherein, top draft hood is equipped on the sow near tapping hole, the top of top draft hood is equipped with secondary petticoat pipe, for catching
The secondary flue gas that collection top draft hood escapes；Top draft hood plays the role of promoting air-flow with secondary petticoat pipe jointly, assists the machine of roof cover
Tool is divulged information and air current composition so that the field structure that taps a blast furnace divides the dust-laden high-temperature flue gas edge that iron runner, slag runner and sow generate
After the blast furnace orderly rises convergence, is finally trapped by roof cover, reduce diffusion of the smoke-dust to cast house structure platform
With the heat radiation of high-temperature flue gas.
Wherein, dividing equipped with the side-draught hood towards the air inlet between iron runner and blast furnace, for trapping molten iron from main iron
The vertical section of ditch branches to the dust-laden high-temperature flue gas generated during point iron runner, and workshop bottom airflow level is guided to converge to height
Stove tapping hole assists the force ventilation of top draft hood, secondary petticoat pipe and roof cover, promotes the orderly transverse flow of dust-laden high-temperature flue gas
It is dynamic.
Wherein, it is equipped with hot-metal bottle cover each point of iron runner outlet, preferably passes through valve transfer, control opening and closing, for trapping iron
Water pot injects the flue dust discharged when molten iron, prevents smoke-dust from escaping.
Wherein, roof cover, top draft hood, secondary petticoat pipe, side-draught hood and hot-metal bottle cover converge connection by flue
To external deduster, the dust-laden high temperature cigarette for trapping roof cover, top draft hood, secondary petticoat pipe, side-draught hood and hot-metal bottle cover
Gas is discharged after external deduster dedusting.
Wherein, extraneous fresh air is sent into from air inlet along workshop bottom level, will be divided caused by iron runner, slag runner and sow
Dust-laden high-temperature flue gas horizontal direction blast furnace direction pushes to side-draught hood, and under side-draught hood guiding, the flue gas is summarized supreme stokehold,
Again by the trapping of top draft hood and secondary petticoat pipe, flue gas is promoted along blast furnace, the flue gas not trapped is finally converged into workshop
Front end is pushed up, then is trapped by roof cover, arresting efficiency is high, and force ventilation amount is small, energy-efficient.
Wherein, the high 1.5-3m of air inlet, preferably 2m, as fresh air inlet, tiny structure design, air inlet wind speed 2-5m/s.
Wherein, a kind of mill construction and ventilating and purifying air system of medium and small blast furnace cast house, mill construction are enclosed factory
Roof 2 and enclosing 3, enclosing bottom is equipped with elongated type air inlet 4 in front of 1 tapping hole of blast furnace.4 high 2m of air inlet, as fresh air
Entrance, tiny structure design, air inlet wind speed 2-5m/s.Extraneous fresh air from air inlet 4 along workshop bottom level be sent into, will divide iron runner 7,
Dust-laden high-temperature flue gas caused by slag runner 5 and sow 6 is horizontal forward to push to side-draught hood 10 and the trapping of top draft hood 8, with prevention
Smoke-dust diffusion is escaped to be assembled with CO, meanwhile, reduce the operating environment temperature of cast house platform.1/3 before 2 nearly blast furnace of workshop top
Place is equipped with roof cover 11, i.e., before blast furnace, apart from blast furnace certain distance, roof cover 11 is equipped on workshop top 2, described certain
Distance is 1/3 length of the from left to right length of workshop top 2 prevents smoke-dust from existing for trapping dust-laden high-temperature flue gas above iron runner
It aggregation at the top of workshop and escapes.Meanwhile the force ventilation of roof cover 11 is combined with the natural air inlet of air inlet 4, is used for factory
Room interior air-flow tissue.Flow level is upwardly into roof cover 11 after dividing iron runner 7, slag runner 5 and sow 6 in cast house along blast furnace
Position forms middle in and top out and close to cast house platform and the regular air flow direction of blast furnace iron notch, to control in workshop
Smoke-dust is spread, and improves ventilation heat exchange efficiency, reduces force ventilation air quantity.Top draft hood 8 is equipped on tapping hole sow 6,
Top is equipped with secondary petticoat pipe 9, the secondary flue gas escaped for trapping top draft hood 8.Top draft hood 8 is played with secondary petticoat pipe 9 and is carried jointly
The effect of air-flow is risen, assists force ventilation and the air current composition of roof cover 11 so that divide iron runner 7, slag runner 5 and main iron in cast house
Ditch 6 generate dust-laden high-temperature flue gas along blast furnace orderly rises converge after, finally trapped by roof cover 11, reduce smoke-dust to
The diffusion of cast house platform and the heat radiation of high-temperature flue gas.The side-draught hood towards air inlet 4 is equipped between iron runner 7 and blast furnace dividing
10, the dust-laden high-temperature flue gas generated during point iron runner 7 is branched to from sow 6 for trapping molten iron, and guide workshop bottom
Flow level converges to blast furnace iron notch, assists the force ventilation of top draft hood 8, secondary petticoat pipe 9 and roof cover 11, promotes dust-laden high
The orderly lateral flow of warm flue gas.Meanwhile it being equipped with hot-metal bottle top draft hood 12 each point of iron runner outlet, pass through valve transfer, control
Opening and closing prevents smoke-dust from escaping for trapping the flue dust discharged when hot-metal bottle injects molten iron.
The technical scheme is that being designed towards the medium and small blast furnace that unilateral side is tapped a blast furnace, mainly solves operating platform ventilation and change
The problems such as flue gas tissue and trapping, workshop top and surrounding smoke-dust escape in heat, workshop has technique effect below or excellent
Gesture：
(1) by air quantity optimization and air current composition, the exhaust outlet and ventilation opening on workshop top is eliminated, is really realized totally-enclosed
Design, prevention smoke-dust are escaped from exhaust outlet and ventilation opening；
(2) the original workshop roof construction of blast furnace is combined, directly roof cover 11 is installed additional in front, promotes force ventilation and dedusting,
It need not be changed to sinkage type structure；
(3) enclosing sets air inlet 4 only immediately ahead of tapping hole, remaining all round closure, and prevention smoke-dust is escaped from surrounding；
(4) inside cast house, increase side-draught hood 10 and secondary petticoat pipe 9, effectively facilitate flue gas directed flow；
(5) fresh air is horizontally entered into from air inlet 4, by cast house operating platform and trough, under the guiding of side-draught hood 10,
Flue gas is summarized into supreme stokehold, then by the trapping of top draft hood 8 and secondary petticoat pipe 9, flue gas is promoted along blast furnace, will finally not caught
The flue gas of collection converges to workshop top front end, then is trapped by roof cover 11, and arresting efficiency is high, and force ventilation amount is small, energy-efficient；
(6) position, size and the air force of air inlet 4, roof cover 11, side-draught hood 10 and secondary petticoat pipe 9, all passes through
The Optimal Parameters of numerical simulation calculation.
Further advantages of the present invention is as follows:
1, the present invention is a kind of mill construction and ventilating and purifying air system of medium and small blast furnace cast house.Mill construction is set as band
Have a closed workshop of the mechanical ventilation type of air inlet, including in front of workshop top, surrounding enclosing and tapping hole enclosing bottom it is logical
Elongated air inlet.It is used as force ventilation using roof cover, tapping hole top draft hood, secondary petticoat pipe, side-draught hood and hot-metal bottle cover etc.
Measure effectively improves heat exchange efficiency in workshop, reduces ventilation volume, avoids the localized hyperthermia of cast house platform, improves operation ring
Border.
2, it is calculated by fluid dynamic numerical simulation, in closed workshop, reasonable Arrangement roof cover, tapping hole top are inhaled
Cover, secondary petticoat pipe, side-draught hood and hot-metal bottle cover, and combine the elongated type air inlet design of enclosing bottom, rationalization's dust-laden
The air flow direction of high-temperature flue gas controls smoke-dust diffusion path, avoids the aggregation of the pollutants such as smoke-dust, CO.
3, incorporation engineering physical condition parameter, is calculated by fluid dynamic numerical simulation, optimization roof cover, tapping hole top
The dedusting air quantity of suction hood, secondary petticoat pipe, side-draught hood and hot-metal bottle cover, improve dust-laden high-temperature flue gas convergence with flow in a organized way
It is dynamic, the arresting efficiency of each dust excluding hood is improved, prevents smoke-dust from escaping and uncontrollable discharge.
Description of the drawings
Fig. 1 shows a kind of mill construction and ventilating and purifying air system of medium and small blast furnace cast house.
Specific implementation mode
To meet the inside post environment of medium and small blast furnace cast house workshop and pair of external smoke-dust uncontrollable discharge concentration
It is important to ask, closed mill construction must be taken, dust removal by ventilation measure, and the air-flow stream of rationalization's dust-laden high-temperature flue gas are optimized
To could improve ventilation heat exchange effect in workshop, improve flue gas trapping rate, prevent smoke-dust from escaping.
As shown in Figure 1, a kind of medium and small blast furnace cast house mill construction system comprising mill construction, ventilating and purifying air system
It taps a blast furnace field structure with medium and small blast furnace；Mill construction includes workshop top 2 and multiple enclosings 3, and mill construction is closed, workshop top 2
For non-sinkage type structure；Ventilating and purifying air system includes air inlet 4, preferably elongated type air inlet 4, and medium and small blast furnace taps a blast furnace field structure
Including blast furnace 1, the side inside mill construction is arranged in blast furnace 1, at the bottom for the other side enclosing that the tapping hole of blast furnace 1 is just facing
Portion is equipped with the air inlet 4, and extraneous fresh air is sent into along mill construction bottom level from the air inlet 4, medium and small blast furnace is gone out
Dust-laden high-temperature flue gas caused by iron field structure pushes to ventilating and purifying air system and trap simultaneously outer arrange.The section on workshop top 2 is
Trapezium structure, there are four the tools of enclosing 3, respectively front side, rear side, left and right side enclosing, and blast furnace 1 is arranged inside mill construction
Left side, on right side the bottom of enclosing be equipped with the elongated type air inlet 4.The medium and small blast furnace field structure that taps a blast furnace further includes blast furnace
Tapping hole, sow 6 divide iron runner 7 and slag runner 5, blast furnace 1 to be arranged in the left side of mill construction, close to left side enclosing, blast furnace casting
Mouth is just facing right side wall and is keeping off, and blast furnace iron notch connects sow 6, and sow 6 includes horizontal segment and vertical section, the water of sow 6
For flat section towards the direction horizontal extension of right side enclosing, the end of horizontal segment connects vertical section, and vertical section is towards the side of front side enclosing
To extension, the end of vertical section connects multiple points of iron runners 7, preferably three, and iron runner 7 is divided also to prolong towards the direction of front side enclosing
It stretches；Slag runner 5 connects the horizontal segment of sow 6 and extends towards the direction of rear side enclosing, and extend with the horizontal segment of sow 6
Direction is vertical.Ventilating and purifying air system further includes top draft hood 8, secondary petticoat pipe 9, roof cover 11, side-draught hood 10 and hot-metal bottle cover 12；Institute
It states air inlet 4 to be arranged in the enclosing bottom on right side, and extends along the enclosing bottom on entire right side, and the air inlet 4
It is positioned opposite with the tapping hole of blast furnace；Workshop top 2 is equipped with roof cover 11, and roof cover 11 is arranged on the right side of the blast furnace, is used for
6 top dust-laden high-temperature flue gas of sow is trapped, aggregation of the smoke-dust at the top of workshop is prevented and is escaped.
Top draft hood 8 is equipped on sow 6 near tapping hole, the top of top draft hood 8 is equipped with secondary petticoat pipe 9, for catching
The secondary flue gas that collection top draft hood 8 escapes；Top draft hood 8 plays the role of promoting air-flow with secondary petticoat pipe 9 jointly, assists roof cover 11
Force ventilation and air current composition so that the field structure that taps a blast furnace divides the dust-laden high temperature that iron runner 7, slag runner 5 and sow 6 generate
It after flue gas orderly rises convergence along the blast furnace, is finally trapped by roof cover 11, it is flat to the field structure that taps a blast furnace to reduce smoke-dust
The diffusion of platform and the heat radiation of high-temperature flue gas.The side-draught hood 10 towards the air inlet 4 is equipped between iron runner 7 and blast furnace 1 dividing,
The dust-laden high-temperature flue gas generated during point iron runner 7 is branched to from the vertical section of sow 6 for trapping molten iron, and guides workshop
Bottom airflow level converges to blast furnace iron notch, assists the force ventilation of top draft hood 8, secondary petticoat pipe 9 and roof cover 11, promotes to contain
The orderly lateral flow of dirt high-temperature flue gas.It is equipped with hot-metal bottle cover 12 each point of outlet of iron runner 7, preferably passes through valve transfer, control
Opening and closing prevents smoke-dust from escaping for trapping the flue dust discharged when hot-metal bottle injects molten iron.It is roof cover 11, top draft hood 8, secondary
Petticoat pipe 9, side-draught hood 10 and hot-metal bottle cover 12, which are converged by flue, is connected to external deduster, is used for roof cover
11, the dust-laden high-temperature flue gas that top draft hood 8, secondary petticoat pipe 9, side-draught hood 10 and hot-metal bottle cover 12 trap is through external deduster dedusting
After be discharged.Extraneous fresh air is sent into from air inlet 4 along workshop bottom level, will be divided and is contained caused by iron runner 7, slag runner 5 and sow 6
Dirt high-temperature flue gas horizontal direction blast furnace direction pushes to side-draught hood 10, and under the guiding of side-draught hood 10, the flue gas is summarized to blast furnace
Before, then by the trapping of top draft hood 8 and secondary petticoat pipe 9, flue gas is promoted along blast furnace, finally converges to the flue gas not trapped
Workshop top front end, then trapped by roof cover 11, arresting efficiency is high, and force ventilation amount is small, energy-efficient.
It is preferred that Fig. 1 shows mill construction and the dust removal by ventilation for the medium and small blast furnace cast house that embodiment of the present invention provides
System.The blast furnace heat size is 1080m3, go out 2,000,000 t/ of iron, gather around there are one tapping hole.Cast house mill construction includes：Entirely
Closed workshop top 2 and surrounding enclosing 3, and with the elongated type air inlet in right side enclosing bottom 4.Sealing power house uses light body steel knot
Structure, body supports use encapsulation process by workshop column, enclosing with workshop top lap-joint.Elongated type air inlet enters for fresh air
Mouthful, air inlet open height is 2m, tiny structure design, air inlet wind speed 2-5m/s.Force ventilation dust pelletizing system mainly include roof cover 11,
The equal measures of top draft hood 8, secondary petticoat pipe 9, side-draught hood 10 and hot-metal bottle cover 12 at tapping hole, and combine elongated type air inlet
4, the air-flow flowing in optimizing tissue workshop improves ventilation heat exchange and smoke-dust arresting efficiency.Its roof cover 11 is arranged in workshop
At 1/3 before the left side of top, ten thousand m of design air flow 10-203/ h carries out removing roof dust using force ventilation mode and workshop is guided to include
Dirt high-temperature flue gas is flowed up along blast furnace.Top draft hood 8 is arranged above tapping hole sow 6, ten thousand m of design air flow 20-403/ h,
For trapping the dust-laden high-temperature flue gas at tapping hole；Secondary petticoat pipe 9 is arranged in the top of top draft hood 8, blast furnace operating platform
Bottom, ten thousand m of design air flow 10-203/ h, the secondary flue gas escaped for trapping top draft hood 8, top draft hood 8 are total with secondary petticoat pipe 9
With the dust-laden high-temperature flue gas for promoting cast house bottom, force ventilation and the air current composition of roof cover 11 are assisted.Side-draught hood 10 is arranged
Dividing iron runner 7 left side, opening face workshop air inlet 4, ten thousand m of design air flow 5-103/ h, for trapping molten iron from sow 6
The dust-laden high-temperature flue gas generated during point iron runner 7 is branched to, and the lateral flow convergence for reinforcing cast house bottom airflow is supreme
Stove tapping hole.The setting of hot-metal bottle cover 12 is exported in each point of iron runner, ten thousand m of design air flow 5-103/ h is opened by valve transfer control
It closes, for trapping the dust-laden high-temperature flue gas discharged when molten iron injects hot-metal bottle.Roof cover 11, secondary petticoat pipe 9, side-draught hood 10, with
And the equal dust excluding hoods of hot-metal bottle cover 12 are converged by flue and are connected to external deduster.
It is calculated by fluid dynamic numerical simulation, in conjunction with workshop parameter and smoke-dust emission performance, utilizes dust excluding hood
The gravity-flow ventilation of force ventilation and air inlet 4, rationalization's workshop air flow direction.By side-draught hood 10 and hot-metal bottle cover 12, allow
Cast house platform divides the dust-laden high-temperature flue gas horizontal cross flowing that iron runner 7, slag runner 5 and sow 6 generate, and converges to blast furnace and go out
Iron mouth, then by the dust-laden high-temperature flue gas of roof cover 11, top draft hood 8 and secondary petticoat pipe 9 promotion blast furnace iron notch, trap step by step,
And finally realize dust-laden high-temperature flue gas middle in and top out, and close to cast house platform and the regular air-flow stream of blast furnace iron notch
To reach the heat exchange of enhancing production operation area, raising ventilation heat exchange efficiency, reduction force ventilation air quantity, control flue gas in workshop
The purpose escaped with pollutants diffusion, prevention smoke-dusts such as CO.The mill construction of the medium and small blast furnace cast house and dust removal by ventilation system
Uniting has the economic benefit of energy efficiency.
Claims (10)
1. a kind of medium and small blast furnace cast house mill construction system, which is characterized in that it include mill construction, ventilating and purifying air system and
Medium and small blast furnace taps a blast furnace field structure；Mill construction includes workshop top (2) and multiple enclosings (3), and mill construction is closed, workshop top
(2) it is non-sinkage type structure；Ventilating and purifying air system includes air inlet (4), and preferably elongated type air inlet (4), medium and small blast furnace goes out
Iron field structure includes blast furnace (1), and the side inside mill construction is arranged in blast furnace (1), is just being faced in the tapping hole of blast furnace (1)
The bottom of other side enclosing is equipped with the air inlet (4), and extraneous fresh air is from the air inlet (4) along mill construction bottom level
It is sent into, the medium and small blast furnace dust-laden high-temperature flue gas caused by field structure that taps a blast furnace is pushed to ventilating and purifying air system and trap and outer
Row.
2. a kind of medium and small blast furnace cast house mill construction system according to claim 1, which is characterized in that workshop top (2)
Section be trapezium structure, there are four enclosing (3) tools, respectively front side, rear side, left and right side enclosing, and blast furnace (1), which is arranged, to exist
Left side inside mill construction, on right side, the bottom of enclosing is equipped with the elongated type air inlet (4).
3. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-2, which is characterized in that medium and small
Blast furnace casting field structure further includes the tapping hole of blast furnace, sow (6), iron runner (7) and slag runner (5), blast furnace (1) is divided to be arranged in factory
The left side of room structure, close to left side enclosing, blast furnace iron notch is just facing right side wall and is keeping off, and blast furnace iron notch connects sow (6), main
Iron runner (6) includes horizontal segment and vertical section, and the horizontal segment of sow (6) is towards the direction horizontal extension of right side enclosing, horizontal segment
End connect vertical section, vertical section extends towards the direction of front side enclosing, and the end of vertical section connects multiple points of iron runners (7),
Preferably three, iron runner (7) is divided also to extend towards the direction of front side enclosing；Slag runner (5) connect sow (6) horizontal segment and to
The direction for rear side enclosing extends, and vertical with the direction that the horizontal segment of sow (6) extends.
4. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-3, which is characterized in that ventilation
Dust pelletizing system further includes top draft hood (8), secondary petticoat pipe (9), roof cover (11), side-draught hood (10) and hot-metal bottle cover (12)；It is described
Air inlet (4) is arranged in the enclosing bottom on right side, and extends along the enclosing bottom on entire right side, and the air inlet
(4) positioned opposite with the tapping hole of blast furnace；Workshop top (2) is equipped with roof cover (11), and roof cover (11) is arranged in the blast furnace
Right side prevents aggregation of the smoke-dust at the top of workshop and escapes for trapping dust-laden high-temperature flue gas above sow (6).
5. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-4, which is characterized in that going out
Sow (6) near iron mouth is equipped with top draft hood (8), and the top of top draft hood (8) is equipped with secondary petticoat pipe (9), for trapping top
The secondary flue gas that suction hood (8) escapes；Top draft hood (8) plays the role of promoting air-flow with secondary petticoat pipe (9) jointly, assists roof cover
(11) force ventilation and air current composition so that the field structure that taps a blast furnace divides iron runner (7), slag runner (5) and sow (6) to generate
Dust-laden high-temperature flue gas along the blast furnace orderly rise convergence after, finally trapped by roof cover (11), reduce smoke-dust to
The diffusion of cast house structure platform and the heat radiation of high-temperature flue gas.
6. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-5, which is characterized in that dividing
The side-draught hood (10) towards the air inlet (4) is equipped between iron runner (7) and blast furnace (1), for trapping molten iron from sow (6)
Vertical section branch to the dust-laden high-temperature flue gas generated during a point iron runner (7), and workshop bottom airflow level is guided to converge to
Blast furnace iron notch, the force ventilation of auxiliary top draft hood (8), secondary petticoat pipe (9) and roof cover (11), promotes dust-laden high-temperature flue gas
Orderly lateral flow.
7. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-6, which is characterized in that each
Divide iron runner (7) outlet to be equipped with hot-metal bottle cover (12), preferably passes through valve transfer, control opening and closing, for trapping hot-metal bottle injection iron
The flue dust discharged when water, prevents smoke-dust from escaping.
8. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-7, which is characterized in that roof
Cover (11), top draft hood (8), secondary petticoat pipe (9), side-draught hood (10) and hot-metal bottle cover (12) converge connection by flue
To external deduster, it is used for roof cover (11), top draft hood (8), secondary petticoat pipe (9), side-draught hood (10) and hot-metal bottle cover
(12) the dust-laden high-temperature flue gas trapped is discharged after external deduster dedusting.
9. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-8, which is characterized in that extraneous
Fresh air is sent into from air inlet (4) along workshop bottom level, and dust-laden caused by iron runner (7), slag runner (5) and sow (6) will be divided
High-temperature flue gas horizontal direction blast furnace direction pushes to side-draught hood (10), under side-draught hood (10) guiding, the flue gas is summarized supreme
Stokehold, then by the trapping of top draft hood (8) and secondary petticoat pipe (9), flue gas is promoted along blast furnace, the flue gas that will finally not trap
Workshop top front end is converged to, then is trapped by roof cover (11), arresting efficiency is high, and force ventilation amount is small, energy-efficient.
10. a kind of medium and small blast furnace cast house mill construction system according to one of claim 1-9, which is characterized in that into
Air port (4) high 1.5-3m, preferably 2m, as fresh air inlet, tiny structure design, air inlet wind speed 2-5m/s.
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| CN113482947A (en) * | 2021-07-21 | 2021-10-08 | 山东众润机械有限公司 | Over-and-under type chimney fan with heat preservation function |
| CN114381561A (en) * | 2022-01-24 | 2022-04-22 | 中冶建筑研究总院有限公司 | Heat and smoke control system for large and medium blast furnace cast house workshop |
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| CN108504809B (en) | 2023-06-13 |
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