CN106363161B - Efficient ladle baking facilities - Google Patents
Efficient ladle baking facilities Download PDFInfo
- Publication number
- CN106363161B CN106363161B CN201611019951.9A CN201611019951A CN106363161B CN 106363161 B CN106363161 B CN 106363161B CN 201611019951 A CN201611019951 A CN 201611019951A CN 106363161 B CN106363161 B CN 106363161B
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- gas
- burner
- air
- valve
- output terminal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention provides a kind of efficient ladle baking facilities,Including roaster body,Backpack cover,Flame retardant coating,Roasting device body lower end connects with backpack cover upper end,Backpack cover lower end connects with flame retardant coating,By cone,Mixed flow chamber,Ignition,Its lower end of burner of combustion chamber and stabilizer composition is placed in the lower end of flame retardant coating,Upper end is placed in roasting device body internal upper part,The burner upper end passes through electric control valve,Electric control valve is connected with air chamber,Air chamber lower part is equipped with air heat exchanger,Described air heat exchanger one end is connected with gas inlet,The other end and exhanst gas outlet,Air intlet is equipped with backpack cover side,Burner upper end is equipped with the fuel gas inlet communicated with the outlet of gas heat-exchanger,Cone is placed at the fuel gas inlet of burner,The entrance of gas heat-exchanger is connected by burnt gas valve and flowmeter with gas pipeline,Ladle baking facilities are also equipped with intelligent controlling device.Have the advantages that to save the energy, save labour, improve security performance.
Description
Technical field
The present invention relates to the Baking out technology of ladle in iron and steel enterprise and foundry enterprise.
Background technology
Existing ladle baking facility is the product to be upgraded by first generation bushing type ladle baking facility mostly --- stores
Hot type ladle baking facility.Its basic principle is 2 sets of burners of configuration, often covers burner and sets ceramic honeycomb to store at burner
Hot body, is absorbed by heat storage and accumulates the heat after burning in flue gas.By accumulation while 2 sets of burners work alternatively
Heat transfer is to combustion gas and combustion air, so as to reach reduction gas consumption, reduces the purpose of production cost.
But heat storing type ladle baker is complicated, four-way reversing valve is easily damaged, the honeycomb of ceramic honeycomb thermal accumulator body
Hole is easily blocked by dust and charcoal particle；Since the coefficient of expansion of ceramics is relatively low, expanding with heat and contract with cold repeatedly makes ceramic body easily broken
Split, cause combustion gas or air draught not smooth, influence production and safety；And since the heat-accumulating process of heat storage is discontinuous,
Absorption and utilization to waste heat in flue gas are simultaneously not thorough, and are also had substantial amounts of waste heat not utilized, are caused the energy-saving effect of combustion gas not
Thoroughly.
The content of the invention
The object of the present invention is to provide a kind of efficient ladle baking facilities, use special designing in burner part, utilize combustion
The vacuum (bernoulli principle) that gas flow at high speed produces, continues " injection " by combustion air and enters burner, uniform with combustion gas mixing
After light, more rigid, the temperature higher of flame；When the present invention continuously can fully recycle ladle baking at the same time in flue gas
Waste-heat combustion gas and combustion air, largely reduce gas consumption；Present device structure is relatively easy at the same time, and service life is high
In similar product, and maintenance workload is small, cost is low.
The present invention technical solution be：A kind of efficient ladle baking facilities, roaster body, backpack cover, flame retardant coating, dry
Roasting device body lower end connects with backpack cover upper end, and backpack cover lower end connects with flame retardant coating, by cone, mixed flow chamber, ignition, combustion
Its lower end of burner of burning chamber and stabilizer composition is placed in the lower end of flame retardant coating, upper end is placed in roaster body internal upper part, on burner
End is connected by electric control valve one and/or electric control valve three with air chamber, and air chamber lower part is equipped with air heat exchanger, air
Heat exchanger one end is connected with gas inlet, and the other end connects with exhanst gas outlet, in backpack cover) side is equipped with air intlet, on burner
End is equipped with the fuel gas inlet communicated with the outlet of gas heat-exchanger, and cone is placed at the fuel gas inlet of burner, gas heat-exchanger
Entrance connected by burnt gas valve and flowmeter with gas pipeline, ladle baking facilities are also equipped with intelligent controlling device.
The flow is calculated as a flowmeter with transporting function, its signal output terminal and electric power input terminal lead to respectively
Cross signal input terminal and the connection of power output terminal of signal wire and cable and intelligent controlling device.
The burnt gas valve is pneumatic rapid cut-off valve, its power section is connected with compressed air pipe, compressed air hose
The powered part in road and the power output terminal of intelligent controlling device connect.
The electric control valve of the burner inner circle cone connection is electricity Dong manual modulation valves, its electric power input terminal passes through
The power output terminal of cable and intelligent controlling device connects.
The electric control valve and/or electric control valve three of described burner connection for it is electronic manual modulation valve, electric power input
Terminal is connected by the power output terminal of cable and intelligent controlling device respectively.
The exhanst gas outlet is equipped with flue gas on-line analysis instrument, and the signal output terminal and electric power of flue gas on-line analysis instrument are defeated
Enter terminal to connect by the signal input terminal and power output terminal of signal wire and cable and intelligent controlling device respectively.
The air intlet is circumscribed with pressure fan, and pressure fan is furnished with a frequency converter, and frequency converter connection pressure fan is moved
The power output terminal and signal output terminal of power power input terminal and intelligent controlling device.
The steel ladle is furnished with an infrared radiation thermometer, and infrared radiation thermometer signal output terminal connects the letter of intelligent controlling device
Number input terminal, electrical source of power input terminal connect the electrical source of power lead-out terminal of intelligent controlling device.
Compared with prior art, the present invention realizes the rational proportion of combustion gas and combustion air by structure atomizer technology,
And combustion gas is pre-mixed before combustion with combustion air, it is ensured that fuel gas buring is more abundant, makes the more rigid of flame, temperature more
Height, under equal baking condition, largely saves combustion gas.Can be to carbon monoxide and oxygen in institute's smoke discharging by flue gas analyzer technology
Content detects in real time, and carries out stringent control adjustment, while ensuring that fuel gas buring is abundant, rationally controls the mistake of combustion air
Coefficient of discharge, can largely reduce the excessive use of combustion gas；The wall temperature of toasted ladle can be supervised in real time by infrared radiation thermometer technology
Survey, and carry out stringent control adjustment, avoid the too high or too low of ladle wall temperature, both ensured the links of steel roasting process
Production requirement can be reached, the excessive use of combustion gas is turn avoid, further save combustion gas.In addition, the fume afterheat of the present invention
Recovery unit is using the more preferable refractory metal heat exchanger of thermal coefficient of expansion, and heat is continuous during exchange
Property, no process of expansion and contraction repeated, avoids the multiple dilation of ceramic body from causing fragmentation so as to influence production efficiency and life
Produce the problem of safe.The gas quantity that can be consumed heating ladle by the present invention substantially reduces.
The gas quantity that by the present invention steel roasting process can first be consumed substantially reduces, and reaches and saves the energy
Purpose；It is unattended that next can realize the baking process of ladle, greatly liberates human resources；In addition, again can be into one
Step strengthens the security of ladle baking process, reduces the security risk during ladle baking.
Brief description of the drawings
Fig. 1 is that the structural diagrams of efficiently ladle baking facilities of the present invention are intended to.
In figure：1st, gas pipeline, 2, flowmeter, 3, roaster body, 4, gas heat-exchanger, 5, intelligent controlling device, 6,
Electric control valve, 7, electric control valve, 8, electric control valve, 9, cone, 10, mixed flow chamber, 11, combustion chamber, 12, flue gas goes out
Mouthful, 13, flue gas on-line analysis instrument, 14, air heat exchanger, 15, air intlet, 16, flame retardant coating, 17, gas inlet, 18, backpack cover,
19th, air chamber, 20, infrared radiation thermometer, 21, ladle, 22, flame detecting instrument, 23, stabilizer, 24, frequency converter, 25, vacuum chamber,
26th, ignition, 27, burner spout, 28, burnt gas valve, 29, ladle baking facilities.
Embodiment
The present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention provides a kind of efficiently ladle baking facilities 29, it is covered on ladle 21, and efficiently
Safety clearance is left according to associated safety working specification between ladle baking facilities 29 and ladle 21.
The gas heat-exchanger 4 is a gas-gas tubing heat exchanger, its combustion gas side connects the combustion equipped with flowmeter 2 respectively
The fuel gas inlet of feed channel 1 and burner, air are placed in the air chamber 19 in roaster body 3.
The fuel gas inlet of the burner is equipped with cone 9, connects vacuum chamber 25, and vacuum chamber 25 connects mixed flow chamber 10, mixed flow
Chamber 10 connects combustion chamber 11, and flame detecting instrument 22, stabilizer 23 and ignition 26 are equipped with combustion chamber 11, and cone 9 is logical
Connecting rod connection electric control valve 7 is crossed, the flame jet 27 of burner passes through the flame retardant coating 16 of roaster bottom.
The air heat exchanger 14 is a gas-gas shell-and-tube heat exchanger, it is equipped with passes through roaster positioned at fume side one end
The gas inlet 17 of bottom refractory layer 16, through the top of backpack cover 18 connection flue gas on-line analysis instrument 13, flue gas divides the other end online
Analyzer 13 connects exhanst gas outlet 12；Toasted through 18 side wall of backpack cover connection air intlet 15, other end connection its air side one end
Air chamber 19 in device body 3, air chamber 19 connect electric control valve 6 and electric control valve 8, air intlet electric control valve 6
The air intlet of burner is connected with electric control valve 8.
The intelligent controlling device includes air-fuel ratio control device, ladle baking wall temperature control device and security monitoring system
Bulk cargo is put.
Wherein described air-fuel ratio control device include the gas meter 2 with transporting function, the cone 9 in burner with
And motor regulated valve 7, air intlet electric control valve 6 and electric control valve 8, flue gas on-line analysis instrument 13, pressure fan frequency conversion
Device 24, infrared radiation thermometer 20, connect respectively the intelligent controlling device 5 (such as：PLC control cabinet).
Wherein described ladle baking wall temperature control device includes infrared radiation thermometer 20, connects the intelligent controlling device 5
(such as：PLC control cabinet).
Wherein described safety monitoring device includes combustion gas fast cut valve 28, flame detecting instrument 22, ignition 26, connects institute
State intelligent controlling device 5 (such as：PLC control cabinet).
The workflow of system is further illustrated according to structure：
During operation, after combustion gas enters burner, by the diffusion of cone 9, combustion gas is set to attach burner inside pipe wall at a high speed
Flowing, under the action of bernoulli principle, swiftly flowing combustion gas forms certain vacuum at vacuum chamber 25, combustion-supporting sky
Gas injection is into burner.And together formed with combustion gas in the mixed flow chamber 10 after swirling eddy and mix abundant, mixed gas is firing
Burn in chamber 11 and lighted by ignition 26, flame is under the action of the expansive force of gaseous-pressure and instancy of combustion, via steady combustion
After device 23 is stablized, 27 continuous high speeds are exported by burner and are sprayed into ladle.
The flue gas wherein produced in baking process is discharged by smoke exhaust fan, and the major impetus of combustion air suction is vacuum
The vacuum that chamber is formed, pressure fan is as auxiliary power.The high-temperature flue gas of discharge and the combustion air of feeding are in air heat exchanger 14
Middle carry out heat exchange, combustion air absorb thermal temperature and rise, and flue gas is released thermal temperature and reduced.Combustion air flows through air
During chamber 19, fuel gas temperature is set accordingly to increase, while absorb burner to combustion gas a part of heat transfer by gas heat-exchanger 4
Outer wall heat cooling burner.
During ladle baking, infrared radiation thermometer 20 monitors the wall temperature of steel ladle working layer in real time, passes through intelligent controlling device 5
Regulating gas input quantity.According to the baking heating curve of steel ladle working layer, setting big fire, moderate heat, small fire and insulation etc. are different to dry
Grilled mold formula.The timely switch mode after wall temperature of working lining reaches design temperature.
In the different phase of ladle baking, 13 continuous monitoring of flue gas analyzer discharges the gas componant of flue gas, according to flue gas
In carbon monoxide and oxygen concentration change, intelligent controlling device 5 by electric control valve 7 adjust cone 9, so as to adjust
The flowing velocity of combustion gas, makes to form different vacuum in vacuum chamber 25, injection enters different amounts of combustion air.Wherein, when drawing
When the combustion-supporting air quantity of injection is insufficient, starts pressure fan, corresponding air capacity is matched by variable frequency adjustment；When injection enter it is combustion-supporting
When air capacity is excessive, adjusts electric control valve 6 and 8 and match corresponding air capacity.
During ladle baking, when gaseous-pressure is less than setting value, combustion gas fast cut valve 28 is acted to off-position immediately,
And alarm；When flame detecting instrument detects fray-out of flame, start ignition 26 immediately and light a fire again, when in setting time
Unignited flame, then combustion gas fast cut valve 28 is acted to off-position immediately, and is alarmed.
In conclusion it is the configuration of the present invention is simple, compact, occupy little space, combustion gas utilization rate is high, up to more than 98%, fits
Close various different brands respective model ladles 21.Meanwhile its is easy to operate, and pass through sensor technology, flue gas analyzer technology
Temperature of the steel ladle working layer in baking can be monitored in real time with infrared radiation thermometer technology, and carry out stringent control adjustment, both saved
Saved consuming excessively for combustion gas, and reduced the power consumption of pressure fan, at the same can realize it is unattended automatically control, ensured and set
High efficiency, stability and the security of received shipment row, have also reached energy saving purpose.
Claims (6)
1. efficient ladle baking facilities, including roaster body（3）, backpack cover（18）, flame retardant coating（16）, roaster body（3）Under
End and backpack cover（18）Upper end connects, backpack cover（18）Lower end and flame retardant coating（16）Connect, it is characterised in that：By cone（9）, mixed flow
Chamber（10）, ignition（26）, combustion chamber（11）And stabilizer（23）Its lower end of the burner of composition is placed in flame retardant coating（16）'s
Lower end, upper end are placed in roaster body（3）Internal upper part, the burner upper end pass through electric control valve one（6）And/or electric adjustable
Save valve three（8）With air chamber（19）It is connected, air chamber（19）Lower part is equipped with air heat exchanger（14）, the air heat exchanger
(14) one end and gas inlet（17）Connection, the other end and exhanst gas outlet（12）Connect, in backpack cover（18）Side be equipped with air into
Mouthful（15）, burner upper end is equipped with and gas heat-exchanger（4）The fuel gas inlet that communicates of outlet, cone（9）It is placed in the combustion of burner
Gas inlet, gas heat-exchanger（4）Entrance pass through burnt gas valve（28）And flowmeter（2）With gas pipeline（1）Connect, ladle
Apparatus for baking（29）It is also equipped with intelligent controlling device（5）.
A kind of 2. efficient ladle baking facilities according to claim 1, it is characterised in that：The flowmeter（2）For one
Flowmeter with transporting function, its signal output terminal and electric power input terminal pass through signal wire and cable and intelligent control respectively
Device（5）Signal input terminal connected with power output terminal.
A kind of 3. efficient ladle baking facilities according to claim 1, it is characterised in that：The burnt gas valve（28）For gas
Dynamic repid cut-off valve, its power section are connected with compressed air pipe, and powered part and the intelligent control of compressed air pipe fill
Put（5）Power output terminal connection.
A kind of 4. efficient ladle baking facilities according to claim 1, it is characterised in that：The burner inner circle cone（9）
The electric control valve two of connection（7）For electricity Dong manual modulation valves, its electric power input terminal passes through cable and intelligent controlling device
（5）Power output terminal connection.
A kind of 5. efficient ladle baking facilities according to claim 1, it is characterised in that：The burner connects electronic
Regulating valve one（6）And/or electric control valve three（8）For electricity Dong manual modulation valves, electric power input terminal passes through cable and intelligence respectively
Can control device（5）Power output terminal connection.
A kind of 6. efficient ladle baking facilities according to claim 1, it is characterised in that：The exhanst gas outlet（12）Dress
There is flue gas on-line analysis instrument（13）, flue gas on-line analysis instrument（13）Signal output terminal and electric power input terminal pass through letter respectively
Number line and cable and intelligent controlling device（5）Signal input terminal connected with power output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611019951.9A CN106363161B (en) | 2016-11-21 | 2016-11-21 | Efficient ladle baking facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611019951.9A CN106363161B (en) | 2016-11-21 | 2016-11-21 | Efficient ladle baking facilities |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106363161A CN106363161A (en) | 2017-02-01 |
| CN106363161B true CN106363161B (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611019951.9A Active CN106363161B (en) | 2016-11-21 | 2016-11-21 | Efficient ladle baking facilities |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123829A (en) * | 2020-01-14 | 2020-05-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Efficient heat storage baking method for steel ladle |
| CN111122768A (en) * | 2020-01-14 | 2020-05-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Ladle baking air-fuel ratio configuration method |
| CN112517899A (en) * | 2020-11-26 | 2021-03-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel ladle baking pressure control system and method |
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| DE2949243A1 (en) * | 1979-12-07 | 1981-06-11 | Gefi Gesellschaft für Industriewärme und Verfahrenstechnik mbH, 4150 Krefeld | PAN DRYING DEVICE |
| US4718643A (en) * | 1986-05-16 | 1988-01-12 | American Combustion, Inc. | Method and apparatus for rapid high temperature ladle preheating |
| AT8277U1 (en) * | 2004-03-04 | 2006-05-15 | Walter Brinkmann Gmbh & Co Kg | METHOD AND DEVICE FOR DRYING AND HEATING A NEW Pourer |
| CN201304487Y (en) * | 2008-12-11 | 2009-09-09 | 于宏 | Continuous casting tundish regenerative baking device |
| CN201592246U (en) * | 2010-01-21 | 2010-09-29 | 江苏百斯特环境工程有限公司 | Heat-accumulating type torpedo car baking device |
| CN202021340U (en) * | 2011-02-15 | 2011-11-02 | 湖南省越昌科技有限公司 | Omniseal heat accumulating type anti-explosion automatic roasting device |
| CN102806344B (en) * | 2012-09-06 | 2014-11-19 | 北京志能祥赢节能环保科技有限公司 | Oxygen-enriched ladle baking device by using low calorific value blast furnace coal gas |
| CN203156033U (en) * | 2013-03-12 | 2013-08-28 | 舞阳钢铁有限责任公司 | Continuous casting tundish baking device capable of improving heat efficiency and improving environment |
| JP2015054333A (en) * | 2013-09-11 | 2015-03-23 | Ｊｆｅスチール株式会社 | Preheating method and device for molten metal storage vessel |
| CN104874780A (en) * | 2015-06-11 | 2015-09-02 | 山东钢铁股份有限公司 | Automatic optimization baking device for torpedo type hot metal ladle |
| CN105108128B (en) * | 2015-10-10 | 2017-03-29 | 抚顺新钢铁有限责任公司 | A kind of continuous casting tundish energy-conservation baking system and its use technique |
| CN205535815U (en) * | 2016-01-26 | 2016-08-31 | 佛山市科皓燃烧设备制造有限公司 | Take regenerative radiant tube nozzle of flue gas backward flow |
| CN206445210U (en) * | 2016-11-21 | 2017-08-29 | 大连新瑞晨环保科技有限公司 | A kind of efficient ladle baking facilities |
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