CN106363161A - Efficient ladle baking device - Google Patents
Efficient ladle baking device Download PDFInfo
- Publication number
- CN106363161A CN106363161A CN201611019951.9A CN201611019951A CN106363161A CN 106363161 A CN106363161 A CN 106363161A CN 201611019951 A CN201611019951 A CN 201611019951A CN 106363161 A CN106363161 A CN 106363161A
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- China
- Prior art keywords
- gas
- burner
- air
- ladle baking
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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 invention provides an efficient ladle baking device. The efficient ladle baking device comprises a baking device body, a cover and a flame retardant layer, wherein the lower end of the baking device body is connected with the upper end of the cover; the lower end of the cover is connected with the flame retardant layer; the lower end of a burner composed of a conical body, a flow mixing cavity, an electronic igniter, a combustion cavity and a firing stabilizer is arranged at the lower end of the flame retardant layer, and the upper end of the burner is arranged on the upper portion inside the baking device body; the upper end of the burner is connected with an air cavity through an electric adjustment valve; an air heat exchanger is installed on the lower portion of the air cavity; one end of the air heat exchanger is connected with a smoke inlet, and the other end of the air heat exchanger is connected with a smoke outlet; an air inlet is formed in the lateral surface of the cover; the upper end of the burner is provided with a fuel gas inlet communicating with an outlet of a fuel gas heat exchanger; the conical body is arranged at the fuel gas inlet of the burner; an inlet of the fuel gas heat exchanger is connected with a fuel gas pipeline through a fuel gas valve and a flowmeter; and the ladle baking device is further provided with an intelligent control device. The efficient ladle baking device has the advantages of saving energy and labor, improving safety performance and the like.
Description
Technical field
The present invention relates in iron and steel enterprise and foundry enterprise ladle Baking out technology.
Background technology
It is to be stored by the product that the upgrading of first generation bushing type ladle baking facility comes mostly existing ladle baking facility
Hot type ladle baking facility.Its ultimate principle is 2 sets of burners of configuration, and often set burner arranges ceramic honeycomb at burner and stores
Hot body, is absorbed by heat storage and accumulates the heat in flue gas after burning.By accumulation while 2 sets of burner alternations
Heat transfer is to combustion gas and combustion air, thus reaching minimizing gas consumption, reduces the purpose of production cost.
But heat storing type ladle baker complex structure, four-way change-over valve is easily damaged, the honeycomb of ceramic honeycomb thermal accumulator body
Hole is easily blocked by dust and charcoal granule；Because the ceramic coefficient of expansion is relatively low, expanding with heat and contract with cold repeatedly makes ceramic body easily broken
Split, lead to combustion gas or air draught not smooth, impact produces and safety；And because the heat-accumulating process of heat storage is discontinuous,
Absorption to waste heat in flue gas and utilization are thorough, and also substantial amounts of waste heat is not utilized, leads to the energy-saving effect of combustion gas not
Thoroughly.
Content of the invention
It is an object of the invention to provide a kind of efficient ladle baking facilities, adopt particular design in burner part, using combustion
The vacuum (bernoulli principle) that gas flow at high speed produces, combustion air is continued " injection " and enters burner, uniform with combustion gas mixing
After light, the more rigid, temperature of flame is higher；In flue gas when the present invention continuously can fully recycle ladle baking simultaneously
Waste-heat combustion gas and combustion air, reduce gas consumption in a large number；Present device structure is relatively easy simultaneously, high life
In like product, and maintenance workload is little, low cost.
The technical solution of the present invention is: a kind of efficient ladle baking facilities, including roaster body, clad, fire resisting
Layer, roasting device body lower end is connected with clad upper end, and clad lower end is connected with flame retardant coating, by cone, mixed flow chamber, electronic ignition
Its lower end of burner of device, 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, described
Burner upper end pass through electric control valve, electric control valve and be connected with air chamber, air chamber bottom is equipped with air heat exchanger, described
Air heat exchanger one end be connected with gas approach, the other end is connected with exhanst gas outlet, is provided with air intlet in clad side, burn
Mouth upper end is provided with the fuel gas inlet communicating with the outlet of gas heat-exchanger, and cone is placed at the fuel gas inlet of burner, and combustion gas is changed
The entrance of hot device is connected with gas pipeline by burnt gas valve and effusion meter, and ladle baking facilities are also equipped with intelligent controlling device.
Described flow is calculated as an effusion meter with transporting function, and its signal output terminal and power input end lead to respectively
Cross holding wire and cable to be connected with the signal input terminal of intelligent controlling device and power output terminal.
Described burnt gas valve is pneumatic rapid cut-off valve, and its power section is connected with compressed air piping, powered part and
The power output terminal of intelligent controlling device connects.
The electric control valve that described burner inner circle cone connects is electricity Dong manual modulation valve, and its power input end passes through
Cable is connected with the power output terminal of intelligent controlling device.
Electric control valve that described burner connects, electric control valve be electronic manual modulation valve, power input end point
Tong Guo cable not be connected with the power output terminal of intelligent controlling device.
, equipped with flue gas on-line analysis instrument, the signal output terminal of flue gas on-line analysis instrument and electric power are defeated for described exhanst gas outlet
Enter terminal to be connected with the signal input terminal of intelligent controlling device and power output terminal by holding wire and cable respectively.
Described air intlet is circumscribed with pressure fan, and pressure fan is furnished with a converter, and converter connects the dynamic of pressure fan
The power output terminal of power power input terminal and intelligent controlling device and signal output terminal.
Described 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, electrical source of power input terminal connects 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 premixing, it is ensured that fuel gas buring is more abundant, makes the more rigid, temperature of flame more before combustion for combustion gas and combustion air
Height, under equal baking condition, saves combustion gas in a large number.Can be to carbon monoxide and oxygen in institute's smoke discharging by flue gas analyzer technology
Content real-time detection, and strictly controlled adjustment, while guaranteeing that fuel gas buring is abundant, rationally control the mistake of combustion air
Coefficient of discharge, can reduce the excessive use of combustion gas in a large number；The wall temperature of toasted ladle can be supervised in real time by infrared radiation thermometer technology
Survey, and strictly controlled adjustment, it is to avoid ladle wall temperature too high or too low, both ensured the links of steel roasting process
Production requirement all can be reached, turn avoid the excessive use of combustion gas, save combustion gas further.In addition, the fume afterheat of the present invention
Recovery unit uses thermal coefficient of expansion more preferable refractory metal heat exchanger, and heat is continuous during exchanging
Property, the process of expansion and contraction of no repetition, it is to avoid the multiple dilation of ceramic body leads to fragmentation thus affecting production efficiency and life
Produce the problem of safety.The gas quantity that heating ladle is consumed can be made substantially to reduce by the present invention.
The gas quantity that steel roasting process is consumed can be made first substantially to reduce by the present invention, reach save energy
Purpose；Secondly the baking process of ladle can be made to realize unmanned, greatly liberate human resourcess；In addition, one can be entered again
Step strengthens the safety of ladle baking process, reduces the potential safety hazard during ladle baking.
Brief description
Fig. 1 is that the structural diagrams of efficient ladle baking facilities of the present invention are intended to.
In figure: 1, gas pipeline, 2, effusion meter, 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 approach, 18, clad,
19th, air chamber, 20, infrared radiation thermometer, 21, ladle, 22, flame detecting instrument, 23, stabilizer, 24, converter, 25, vacuum chamber,
26th, ignition, 27, burner spout, 28, burnt gas valve, 29, ladle baking facilities.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further details.
As shown in figure 1, the present invention provides a kind of efficient ladle baking facilities 29, it covers on ladle 21, and efficiently
Between ladle baking facilities 29 and ladle 21, safety clearance is left according to associated safety working specification.
Described gas heat-exchanger 4 is a gas-gas tubing heat exchanger, and its combustion gas side connects the combustion equipped with effusion meter 2 respectively
Feed channel 1 and the fuel gas inlet of burner, air is placed in the air chamber 19 in roaster body 3.
The fuel gas inlet of described burner is provided with cone 9, connects vacuum chamber 25, and vacuum chamber 25 connects mixed flow chamber 10, mixed flow
Chamber 10 connects combustion chamber 11, is provided with flame detecting instrument 22, stabilizer 23 and ignition 26 in combustion chamber 11, and cone 9 leads to
Cross connecting rod and connect electric control valve 7, the flame jet 27 of burner passes through the flame retardant coating 16 of roaster bottom.
Described air heat exchanger 14 is a gas-gas shell-and-tube heat exchanger, and it is provided with and passes through roaster positioned at fume side one end
The gas approach 17 of bottom refractory layer 16, the other end passes through clad 18 top to connect flue gas on-line analysis instrument 13, and flue gas divides online
Analyzer 13 connects exhanst gas outlet 12；Its air side one end passes through clad 18 side wall to connect air intlet 15, and the other end connects baking
Air chamber 19 in device body 3, air chamber 19 connects electric control valve 6 and electric control valve 8, air intlet electric control valve 6
Connect the air intlet of burner with electric control valve 8.
Described intelligent controlling device includes air-fuel ratio control device, ladle baking wall temperature control device and security monitoring system
Bulk cargo is put.
Wherein said 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 described intelligent controlling device 5(for example: plc switch board respectively).
Wherein said ladle baking wall temperature control device includes infrared radiation thermometer 20, connects described intelligent controlling device 5
(for example: plc switch board).
Wherein said safety monitoring device includes combustion gas and cuts valve 28, flame detecting instrument 22, ignition 26 soon, connects institute
The intelligent controlling device 5(stating is for example: plc switch board).
According to structure, the workflow of system is further illustrated:
During operation, after combustion gas enters burner, by the diffusion of cone 9, combustion gas is made to attach burner inside pipe wall flow at high speed,
In the presence of bernoulli principle, swiftly flowing combustion gas forms certain vacuum at vacuum chamber 25, and combustion air is drawn
Inject burner.And mix after together forming swirling eddy with combustion gas in mixed flow chamber 10 fully, mixed gas is in combustion chamber
Lighted by ignition 26 in 11, flame in the presence of the expansive force of gaseous-pressure and instancy of combustion, via stabilizer 23
After stable, 27 continuous high speeds exported by burner and sprays in ladle.
The flue gas producing wherein in baking process is discharged by smoke exhaust fan, and the major impetus that combustion air sucks is vacuum
The vacuum that chamber is formed, pressure fan is as auxiliary power.The high-temperature flue gas discharged and the combustion air of feeding are in air heat exchanger 14
In carry out heat exchange, combustion air absorbs thermal temperature and rises, and flue gas is released thermal temperature and reduced.Combustion air flows through air
During chamber 19, by 4 a part of heat transfers of gas heat-exchanger to combustion gas, so that fuel gas temperature is accordingly increased, absorb burner simultaneously
Outer wall heat cooling burner.
During ladle baking, the wall temperature of infrared radiation thermometer 20 real-time monitoring steel ladle working layer, by intelligent controlling device 5
Regulating gas input quantity.According to the baking heating curve of steel ladle working layer, set the different baking such as big fire, moderate heat, small fire and insulation
Grilled mold formula.Timely switch mode after the wall temperature of working lining reaches design temperature.
In the different phase of ladle baking, flue gas analyzer 13 continuous monitoring 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, thus adjusting
The flowing velocity of combustion gas, makes to be formed different vacuums in vacuum chamber 25, and injection enters different amounts of combustion air.Wherein, when drawing
During the combustion-supporting air quantity deficiency injected, start pressure fan, corresponding air capacity is mated by variable frequency adjustment；When injection enter combustion-supporting
When air capacity is excessive, adjusts electric control valve 6 and 8 and mate corresponding air capacity.
During ladle baking, when gaseous-pressure is less than setting value, combustion gas cuts valve 28 action immediately soon to off-position,
And report to the police；When flame detecting instrument detects fray-out of flame, start ignition 26 immediately and again light a fire, when in setting time
Unignited flame, then combustion gas cuts valve 28 action immediately soon to off-position, and reports to the police.
In sum, present configuration is simple, compact, takes up room little, and combustion gas utilization rate is high, up to more than 98%, is suitable for
Various different brands respective model ladles 21.Meanwhile, it is simple to operate, and by sensor technology, flue gas analyzer technology and
Infrared radiation thermometer technology can be to steel ladle working layer in baking temperature real-time monitoring, and strictly controlled adjustment, both saved
Consuming excessively of combustion gas, reduces the power consumption of pressure fan again, can achieve simultaneously unattended automatically control, ensured equipment
High efficiency, stability and the safety running, has also reached energy-conservation purpose.
Claims (6)
1. efficient ladle baking facilities, including roaster body (3), clad (18), flame retardant coating (16), roasting device body (3) lower end
Connect with clad (18) upper end, clad (18) lower end connect with flame retardant coating (16) it is characterised in that: by cone (9), mixed flow chamber
(10), its lower end of burner that ignition (26), combustion chamber (11) and stabilizer (23) form is placed under flame retardant coating (16)
End, upper end are placed in roasting device body (3) internal upper part, described burner upper end pass through electric control valve (6), electric control valve (8) with
Air chamber (18) is connected, and air chamber (18) bottom is equipped with air heat exchanger (14), described air heat exchanger (14) one end and cigarette
Gas import (17) connects, and the other end is connected with exhanst gas outlet (12), is provided with air intlet (15) in clad (18) side, on burner
End is provided with the fuel gas inlet communicating with the outlet of gas heat-exchanger (4), and cone (9) is placed at the fuel gas inlet of burner, combustion gas
The entrance of heat exchanger (4) passes through burnt gas valve (28) and effusion meter (2) is connected with gas pipeline (1), ladle baking facilities (29)
It is also equipped with intelligent controlling device (5).
2. a kind of efficient ladle baking facilities according to claim 1 it is characterised in that: described effusion meter (2) be one
With the effusion meter of transporting function, its signal output terminal and power input end pass through holding wire and cable and Based Intelligent Control respectively
The signal input terminal of device (5) and power output terminal connect.
3. a kind of efficient ladle baking facilities according to claim 1 it is characterised in that: described burnt gas valve (28) be gas
Dynamic repid cut-off valve, its power section is connected with compressed air piping, the power output of powered part and intelligent controlling device (5)
Terminal connects.
4. a kind of efficient ladle baking facilities according to claim 1 it is characterised in that: described burner inner circle cone (9)
The electric control valve (7) connecting be electronic manual modulation valve, its power input end is by cable and intelligent controlling device (5)
Power output terminal connect.
5. a kind of efficient ladle baking facilities according to claim 1 it is characterised in that: it is electronic that described burner connects
Regulating valve (6), electric control valve (8) be electronic manual modulation valve, power input end passes through cable and Based Intelligent Control respectively and fills
The power output terminal putting (5) connects.
6. a kind of efficient ladle baking facilities according to claim 1 it is characterised in that: described exhanst gas outlet (12) dress
Flue gas on-line analysis instrument (13), the signal output terminal of flue gas on-line analysis instrument (13) and power input end is had to pass through letter respectively
Number line and cable are connected with the signal input terminal of intelligent controlling device (5) and 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 true CN106363161A (en) | 2017-02-01 |
| CN106363161B CN106363161B (en) | 2018-05-15 |
Family
ID=57892497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611019951.9A Active CN106363161B (en) | 2016-11-21 | 2016-11-21 | Efficient ladle baking facilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106363161B (en) |
Cited By (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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| 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 |
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| 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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| EP0030315A1 (en) * | 1979-12-07 | 1981-06-17 | Klöckner GEFI KG Industrielle Wärmetechnik | Drying apparatus for ladles |
| US4718643A (en) * | 1986-05-16 | 1988-01-12 | American Combustion, Inc. | Method and apparatus for rapid high temperature ladle preheating |
| FR2867097A3 (en) * | 2004-03-04 | 2005-09-09 | Walter Brinkmann Gmbh & Co Kg | Drying and heating arrangement for newly constructed casting ladle, comprises gas collection device around ladle cover connected to gas suction device |
| 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 |
| CN102806344A (en) * | 2012-09-06 | 2012-12-05 | 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 |
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Cited By (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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| Publication number | Publication date |
|---|---|
| CN106363161B (en) | 2018-05-15 |
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