CN2705465Y - Hot-air furnace heated from air path two ends of hot-air furnace heat storage group - Google Patents
Hot-air furnace heated from air path two ends of hot-air furnace heat storage group Download PDFInfo
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- CN2705465Y CN2705465Y CN 200320131194 CN200320131194U CN2705465Y CN 2705465 Y CN2705465 Y CN 2705465Y CN 200320131194 CN200320131194 CN 200320131194 CN 200320131194 U CN200320131194 U CN 200320131194U CN 2705465 Y CN2705465 Y CN 2705465Y
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- hotblast stove
- heat storage
- heat
- storage group
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Abstract
A kind of hotblast stove that heats from the air flue two ends of hotblast stove heat storage group belongs to the ironmaking field.Can solve the existing little problem of hotblast stove wind-warm syndrome heat storage capacity not high, heat storage.It comprises hotblast stove body, heat-accumulation combustion device, high temperature valve, exchange system, burner blower, blow blower fan, chimney, lighter for ignition, cold wind hot blast or coal gas even air distributing ring row of channels, valve and piping system.Wherein the hotblast stove body is the cylindrical vessel of traverse, inner lining refractory.Hotblast stove body liner space comprises heat accumulating sections and combustion chamber, and the air flue two ends of described combustion chamber heat storage group in body liner space are respectively established one, by the periodic work of combustion chamber, two ends, hotblast stove heat storage group is heated; The heat-accumulation combustion device is positioned at the both sides of combustion chamber, hotblast stove two ends, comprises two groups of regenerator or heat-accumulating burner at least.This hotblast stove can provide hot blast more than 1300 ℃ to blast furnace.
Description
Technical field
The utility model relates to a kind of hotblast stove from the heating of hotblast stove heat storage group air flue two ends that is used to provide high-temperature gas.
Background technology
Blast-furnace smelting needs the enough high temperature hot blast, and hotblast stove provides the device of this hot blast.The hotblast stove that current industrial is used is made up of furnace shell, refractory lining, combustion unit, checker brick, fire grate, valve and channel system.Be subjected to the restriction of calorific value and the fuel and the combustion air initial temperature of fuel, the wind pushing temperature of existing hotblast stove generally about 1000-1200 ℃, can not adapt to new high wind-warm syndrome requirement.What pay particular attention to is under so high temperature, to want to make temperature to improve very difficulty again, but even make temperature improve tens degree again, also be very useful to smelting process.The weak point of traditional hot wind furnace is: 1. the temperature difference at heat storage group two ends is very big in the stove, and the thermal capacitance ability of heat storage group fails to play one's part to the full, and under the condition of equal heat capacity, volume is big, and investment is high; 2. the flue-gas temperature of discharging in the stove is higher, influences the thermo-efficiency of hotblast stove, if adopt heat exchanger to come recovery waste heat, then need increase investment, and effect is not ideal enough; 3. the upper limit of the hotblast stove hot blast temperature that can provide is subjected to the influence of combustion gas quality bigger, when particularly using blast furnace gas, is difficult to adapt to the requirement of high wind-warm syndrome more than 1200 ℃.
Summary of the invention
Main purpose of the present utility model is to overcome the deficiencies in the prior art, provides that a kind of wind-warm syndrome is higher, bigger, the easier raising thermo-efficiency of the heat storage capacity of heat storage, safer hotblast stove.
To achieve these goals, the technical solution adopted in the utility model is:
Basic design of the present utility model is, respectively establish a combustion chamber at the air flue two ends of hotblast stove heat storage group, the air flue two ends heating from hotblast stove heat storage group makes hot blast temperature higher, hotblast stove heat storage group obtains littler thermograde, to improve the heat storage capacity of heat storage group.
For improving efficiency of combustion and, can use Regenerative Combustion Technology to the Heating temperature of heat storage group, with coal gas with or the combustion air thermal afterburning burn.
Regenerative Combustion Technology can be used regenerator or heat-accumulating burner.
The heat storage group of the hotblast stove under the above-mentioned design can also be to combine by a plurality of relatively independent heat storage group that pipeline and valve system keep communicating in twos, to guarantee normally carrying out of combustion processes.
Can make the passage of coal gas and combustion air parallel with hotblast stove heat storage group gas channel at hotblast stove heat storage group two ends, cold wind and hot-air channel intersect an angle at the sidepiece and the heat storage group gas channel of hotblast stove heat storage group both sides, also can make cold wind parallel with hotblast stove heat storage group gas channel at hotblast stove heat storage group two ends with hot-air channel, the passage of coal gas and combustion air intersects an angle at the sidepiece and the hotblast stove heat storage group gas channel of hotblast stove heat storage group both sides.
On air, for making the hot blast rotation flow pattern uniform, can the cold wind import with or the position of hot-blast outlet ring set is set, a plurality of air ports are set in the ring set.
For improving the distribution of air-flow turnover, can make the cold wind import with or the medullary ray of hot-blast outlet or centrosymmetry face and its radial slit between one of maintenance just pass in and out the oblique angle that wind roughly tangentially passes in and out.
Equally, in the burning phase, for making hot blast gas stream in the stove uniform distribution, can coal gas, air intlet and or the position of exhanst gas outlet ring set is set, a plurality of air ports are set in the ring set, just coal gas, air intlet and or the medullary ray of exhanst gas outlet or centrosymmetry face and its radial slit between keep one just to pass in and out the roughly oblique angle of turnover tangentially of wind.
Be the burning of baker and low-temperature zone, respectively establish a lighter for ignition in heat storage group both sides.
When above-mentioned hotblast stove adopts the structure of horizontal monomer-type, can effectively reduce the hotblast stove height, reduce the creep of bottom heat storage, avoid producing the inconvenience that working aloft brings, make the thermograde in the heat storage group littler.
Compared with prior art, the utlity model has following beneficial effect:
1. under the condition of refractory materials, heat storage material, Controlling System and time permission,, thereby realize that the wind-warm syndrome factor is optimized to greatest extent in the smelting process even adopt fuel gas with low heat value and lower hot blast temperature also can reach the required arbitrary temp of technology;
2. under equal conditions, to compare the air-supply time longer with existing hotblast stove;
3. when adopting Regenerative Combustion Technology, higher with respect to the efficient of prior art hotblast stove, and have considerable energy saving, environment protecting;
4. the internal difference in temperature of heat storage group is less in the stove, and the temperature of heat storage is higher, thereby the heat storage capacity of unit heat storage is bigger;
5. when hotblast stove adopts the structure of horizontal monomer-type, can effectively reduce the hotblast stove height, reduce investment; Reduce the creep of bottom heat storage; The equipment installation and maintenance is more convenient; Thermograde in the heat storage group is littler.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Burning phase system schematic when the hotblast stove that Fig. 1 heats from the air flue two ends of hotblast stove heat storage group for the utility model embodiment one is in the right side igniting;
Burning phase system schematic when the hotblast stove that Fig. 2 heats from the air flue two ends of hotblast stove heat storage group for the utility model embodiment one is in the left side igniting;
Fig. 3 is the utility model embodiment one from the hotblast stove of the air flue two ends heating of hotblast stove heat storage group system schematic on air;
Fig. 4 is the regenerator decomposing schematic representation;
Fig. 5 is coal gas, air at the pipeline synoptic diagram that burns;
Fig. 6 is the whole connection diagram of hotblast stove and regenerator;
Fig. 7 is that another kind of heat storage group is arranged synoptic diagram;
Fig. 8 is the A-A diagrammatic cross-section;
Fig. 9 is the B-B diagrammatic cross-section;
Figure 10 arranges synoptic diagram for the heat storage group of enforcement two.Among the figure
1. regenerator 2. coal gas heat storages 3. air heat storages 4. high temperature valves
5. air burner 6. coal gas burners 7. hotblast stove bodies 8. hot-blast outlet ring sets
9. combustion chamber 10. hotblast stove heat accumulating sections 11. combustion chambers
12. cold wind import ring set 13. exchange systems 14. burner blowers
15. induced draft fan 16. chimneys 17. lighter for ignitions
Embodiment
As Fig. 1-3, be the system diagram of embodiment one of the present utility model, displaying be the situation that hotblast stove adopts horizontal monomer-type.The hotblast stove that heats from the air flue two ends of hotblast stove heat storage group comprises hotblast stove body 7, regenerator 1, air burner 5, coal gas burner 6, hot-blast outlet ring set 8, cold wind import ring set 12, high temperature valve 4, exchange system 13, burner blower 14, induced draft fan 15, chimney 16, lighter for ignition 17.Wherein hotblast stove body 7 comprises combustion chamber 9, hotblast stove heat accumulating sections heat storage group 10, combustion chamber 11.
Wherein, described heat accumulating sections is filled heat storage; Described heat storage can be any in honeycomb, spheroid, 7 hole checker brick and the 19 hole checker brick.The material of heat storage can be clay matter, high alumina matter, mullite and siliceous refractory [material.
The regenerator of heat-accumulation combustion device or the heat storage of heat-accumulating burner are honeycomb body structure or sphere structure, and described honeycomb section is 100mm * 100mm, long 200-400mm, and each hole is the square of length of side 2.5-3.0mm; Described sphere structure diameter is 15-30mm; Material can be clay matter, high alumina matter, mullite and siliceous refractory [material.
The hotblast stove body can be horizontal steel cylinders, and inner lining refractory is divided into combustion chamber 9, hotblast stove heat accumulating sections 10, combustion chamber 11 on length, and heat accumulating sections is filled heat storage group 10, and the combustion chamber is the space of air, gas-fired.
As Fig. 1, establish many group regenerator or heat-accumulating burner at the two ends of body, in the burning phase, coal gas, air is through the regenerator 1 of combustion chamber 11 sides, high temperature valve 4, coal gas burner 6, when air burner 5 or heat-accumulating burner burning, the high-temperature flue gas that produces, heat storage group 10 through heat accumulating sections, then through the coal gas burner 6 of combustion chamber 9 sides, air burner 5, high temperature valve 4, regenerator 1 or heat-accumulating burner, behind the coal gas heat storage 2 in the regenerator 1 of heating flame chamber 9 sides and the heat storage of air heat storage 3 or heat-accumulating burner, through valve, piping system, exchange system, induced draft fan enters chimney.
As Fig. 2, in the burning phase, behind the 30-200S, the exchange system commutation, coal gas, air is through the regenerator 1 of combustion chamber 9 sides, high temperature valve 4, coal gas burner 6, when air burner 5 or heat-accumulating burner burning, the high-temperature flue gas that produces, heat storage group 10 through heat accumulating sections, then through the coal gas burner 6 of combustion chamber 11 sides, air burner 5, high temperature valve 4, regenerator 1 or heat-accumulating burner, behind the coal gas heat storage 2 in the regenerator 1 of heating flame chamber 11 sides and the heat storage of air heat storage 3 or heat-accumulating burner, through valve, piping system, exchange system, induced draft fan enters chimney.
As Fig. 3, on air, close the high temperature valve 4 at hotblast stove body two ends, after all pressing, open the valve of cold wind and hot blast, cold wind is through cold wind import ring set 12, enters after hotblast stove and heat storage group carry out heat exchange, enters the hot-blast main from hot-blast outlet ring set 8.
According to certain rule and program hotblast stove both sides regenerator or heat-accumulating burner alternation.
About 530 ℃ of the point of ignition of blast furnace gas, working control is greater than 600 ℃.The hotblast stove initial stage of heating from the air flue two ends of hotblast stove heat storage group, flue-gas temperature was low, by lighter for ignition 17 hotblast stove is dried by the fire to greater than 600 ℃, starts regenerator or heat-accumulating burner then when working.Therefore, heat-accumulating burner is not all to be in real working order the full Zhou Dynasty, and the temperature of a combuster 9,11 reached greater than the cycle after 600 ℃, just really worked.Press the hotblast stove operating mode, in the following several ways:
1) the hotblast stove stove builds up the initial stage, hotblast stove is in " cold " state, and regenerator or heat-accumulating burner can't be worked, and carry out baker by the lighter for ignition 17 that is arranged on combustion chamber 9,11 sides.Use the lighter for ignition baker of combustion chamber 9 sides earlier, the lighter for ignition 17 of combustion chamber 9,11 sides baker in turn then, the beginning flue-gas temperature is lower, the regenerator temperature of regenerator or heat-accumulating burner is lower, when thermopair records side combusion chamber's temperature greater than 600 ℃, reach the point of ignition of air, coal gas, air, coal gas insert the regenerator or the heat-accumulating burner of this side, start working, simultaneously, detect the temperature of opposite side combustion chamber, when also reaching greater than 600 ℃, the exchange system commutation, air, coal gas insert the regenerator or the heat-accumulating burner of opposite side, start working.At this moment regenerator or heat-accumulating burner enter real working order, and arrests firearm 17 carries out baker by drying out curve, finishes up to baker.Because heat accumulating sections is in Shen portion, when baker finished, the temperature of combustion chamber all reached 1300--1500 ℃, has created condition for hotblast stove puts into operation.
2) after baker finished, the temperature of combustion chamber all reached 1300--1500 ℃, and hotblast stove is in pities the stove state.Before dropping into burning, thermopair records both sides burning zone temperature, reaches 600 ℃, can carry out work by Control Program for Microcomputers [Digital Research] or director demon.
3) hotblast stove is after on air finishing, the about 1000--1500 of the temperature of hot-blast outlet side combusion chamber ℃, the cold wind inlet chamber burns the about 300--500 of temperature ℃ that is, the temperature of hot-blast outlet side combusion chamber satisfies the condition of gas-fired, earlier send into coal gas and air from the regenerator or the heat-accumulating burner of hot-blast outlet side combusion chamber, burn, the regenerator or the heat-accumulating burner of cold wind on the suction side combustion chamber are in the accumulation of heat state.
When the temperature of cold wind on the suction side combustion chamber greater than 600 ℃, the exchange system commutation, the regenerator or the heat-accumulating burner of cold wind on the suction side combustion chamber begin to add heating gas, air, burn, and the regenerator of hot-blast outlet side combusion chamber or heat-accumulating burner are in the accumulation of heat state.Regenerator or heat-accumulating burner carry out work by Control Program for Microcomputers [Digital Research] or director demon, reach 1300-1500 ℃ up to the both sides chamber temperature.
Every group of regenerator or heat-accumulating burner can be divided into the two portions that are used for different purposes, or be decomposed into two groups of regenerator or heat-accumulating burners that are used for different purposes as Fig. 4, or send into hotblast stove in the pipeline internal combustion, or be linked to be integral body as Fig. 6 regenerator or heat-accumulating burner and hotblast stove as Fig. 5.
Fig. 7 is among the embodiment one, the arrangement form of another kind of heat storage group, and it is to be combined by a plurality of relatively independent heat storage group that keeps communicating in twos by pipeline and valve system.Among the figure, the 10th, a plurality of relatively independent heat storage groups, switch combination and pipeline by each valve can keep communicating in twos of they.
Fig. 8 is the sectional view of the A-A among Fig. 1, and what its was represented is a kind of structure when in the ring set 12 of sending into cold wind a plurality of blast inlet being set.
Fig. 9 is the sectional view of the B-B among Fig. 1, and what its was represented is a kind of structure when in the ring set 8 of deriving hot blast a plurality of air outlet being set.
If one or two (the using and the reserved) burner blowers 14 provide combustion air, its pressure will satisfy the requirement of heat-accumulation combustion, is 5-15Kpa.
Exchange system 13 can be reversing mechanism or valve group independently, establishes one or two (the using and the reserved) induced draft fans 15 and chimney 16 thereafter, the discharging flue gas, and flue-gas temperature is less than 200 ℃.
As a complete hot blast stove system, should constitute by two hotblast stoves shown in the present embodiment at least, consider situations such as maintenance, preferably adopt three hotblast stoves shown in the present embodiment to constitute a complete hot blast stove system.
Figure 10 is the structure iron that the utility model has adopted the embodiment two of a plurality of relatively independent heat storage group that communicates in twos by pipeline and valve system maintenance, and in order to simplify, refractory lining does not draw among the figure.The implication of each label among the figure is identical with the implication of label among Fig. 1-3.Be not difficult to find out that from figure in the present embodiment, on the one hand, the open and close combination by each valve can be heated in twos to each relatively independent heat storage group 10, and make the relatively independent heat storage group of finishing after the heating enter the exothermic phase of air-supply one by one; Another ten thousand, open and close by related valve cooperate, when any one relatively independent heat storage group is in ventilation state, all the other two relatively independent heat storage groups that are ready are heated, unless have one to belong to high temperature and await orders in two relatively independent heat storage groups of all the other that are ready, temporarily do not need heating.
No matter embodiment one still is embodiment two, can set up a plurality of coal gas burners 6 that are sent to blast furnace and air burner 5 and cold wind import ring set 12, hot-blast outlet ring set 8 on furnace shell, and the section form of this ring set can also be semicircular or other shapes.
Claims (9)
1, a kind of hotblast stove that heats from the air flue two ends of hotblast stove heat storage group, comprise hotblast stove body, heat-accumulation combustion device, high temperature valve, exchange system, burner blower, induced draft fan, chimney, lighter for ignition, cold wind hot blast or coal gas even air distributing ring row of channels, valve and piping system, described body comprises furnace shell, refractory lining, combustion chamber, heat storage group, it is characterized in that, the hotblast stove body is the cylindrical vessel of traverse, and a combustion chamber is respectively established at air flue two ends of heat storage group in it; Wherein a combustion chamber links to each other with a heat-accumulation combustion device one end with high temperature valve by air burner, coal gas burner, and another combustion chamber links to each other with another heat-accumulation combustion device one end with high temperature valve by air burner, coal gas burner; The described heat-accumulation combustion device the other end links to each other with described exchange system one end by pipeline; The described exchange system the other end links to each other with air line, gas line, burner blower, induced draft fan and chimney.
2, the hotblast stove of the air flue two ends heating from hotblast stove heat storage group as claimed in claim 1 is characterized in that, the heat storage group of hotblast stove is the combination that keeps a plurality of relatively independent heat storage group that communicates in twos by pipeline and valve system.
3, the hotblast stove that heats from the air flue two ends of hotblast stove heat storage group as claimed in claim 1, it is characterized in that, described heat-accumulation combustion device is positioned at the both sides or the outside of combustion chamber, two ends, at least comprise two groups of regenerator or heat-accumulating burner, every group of regenerator is divided into the two portions that are used for different purposes or is decomposed into two groups of regenerator that are used for different purposes.
4, the hotblast stove that heats from the air flue two ends of hotblast stove heat storage group as claimed in claim 1 is characterized in that, is provided with cold wind import ring set and hot-blast outlet ring set in the hotblast stove body exterior position corresponding with the bags; The structural form of described cold wind import ring set and hot-blast outlet ring set is the belt shell of steel, and be weldingly connected with the furnace shell of steel, inner lining refractory, the hotblast stove body is covered part by described belt shell and has 10 into and out of the air port on furnace shell and refractory masses, and make cold wind with or the medullary ray of hot blast air-flow during and its radial slit into and out of hotblast stove between angle of maintenance.
5, the hotblast stove that heats from the air flue two ends of hotblast stove heat storage group as claimed in claim 1 is characterized in that, respectively establishes a lighter for ignition in the combustion chamber of hotblast stove body heat storage group both sides.
6, the hotblast stove that heats from the air flue two ends of hotblast stove heat storage group as claimed in claim 1 is characterized in that the structural form of hotblast stove body is that outermost layer is a steel cylinders, the thick refractory materials of liner 200-500mm; Described heat accumulating sections is filled heat storage; Described heat storage can be any in honeycomb, spheroid, 7 hole checker brick and the 19 hole checker brick.
7, the hotblast stove that heats from the air flue two ends of hotblast stove heat storage group as claimed in claim 1, it is characterized in that, the regenerator of heat-accumulation combustion device or the heat storage of heat-accumulating burner are honeycomb body structure or sphere structure, described honeycomb section is 100mm * 100mm, long 200-400mm, each hole is the square of length of side 2.5-3.0mm; Described sphere structure diameter is 15-30mm.
8, the hotblast stove that heats from the air flue two ends of hotblast stove heat storage group as claimed in claim 1, it is characterized in that, described exchange system is reversing mechanism or independent valve group, simultaneously, establishing a high temperature, high pressure valve between hotblast stove body combustion chamber and the heat-accumulation combustion device or between heat-accumulation combustion device and the exchange system.
9, the hotblast stove that heats from the air flue two ends of hotblast stove heat storage group as claimed in claim 1, it is characterized in that, if one or two burner blowers, combustion air is provided, its pressure will satisfy the requirement of heat-accumulation combustion, be 5-15Kpa, establish one or two induced draft fans and chimney after the exchange system, the discharging flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320131194 CN2705465Y (en) | 2003-12-05 | 2003-12-05 | Hot-air furnace heated from air path two ends of hot-air furnace heat storage group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320131194 CN2705465Y (en) | 2003-12-05 | 2003-12-05 | Hot-air furnace heated from air path two ends of hot-air furnace heat storage group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2705465Y true CN2705465Y (en) | 2005-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320131194 Expired - Lifetime CN2705465Y (en) | 2003-12-05 | 2003-12-05 | Hot-air furnace heated from air path two ends of hot-air furnace heat storage group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2705465Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1624159B (en) * | 2003-12-05 | 2010-11-03 | 山东省冶金设计院 | Hot-blast stove heating from dual-end of air pipe of heat storage device set |
| CN102399927A (en) * | 2011-05-27 | 2012-04-04 | 林庆霖 | High pressure combustion method for blast-furnace hot blast stove |
| CN102116579B (en) * | 2009-12-30 | 2012-09-26 | 中冶长天国际工程有限责任公司 | Burning pipeline system for rotary hearth furnace |
| CN110425730A (en) * | 2019-08-29 | 2019-11-08 | 嘉鹏再升科技（深圳）股份有限公司 | A kind of improved hot wind furnace equipped with accumulator |
-
2003
- 2003-12-05 CN CN 200320131194 patent/CN2705465Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1624159B (en) * | 2003-12-05 | 2010-11-03 | 山东省冶金设计院 | Hot-blast stove heating from dual-end of air pipe of heat storage device set |
| CN102116579B (en) * | 2009-12-30 | 2012-09-26 | 中冶长天国际工程有限责任公司 | Burning pipeline system for rotary hearth furnace |
| CN102399927A (en) * | 2011-05-27 | 2012-04-04 | 林庆霖 | High pressure combustion method for blast-furnace hot blast stove |
| CN110425730A (en) * | 2019-08-29 | 2019-11-08 | 嘉鹏再升科技（深圳）股份有限公司 | A kind of improved hot wind furnace equipped with accumulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG PROVINCE METALLURGICAL ENGINEERING CO., L Free format text: FORMER NAME: SHANGDONG DESIGN INST OF METALLURGY |
|
| CP03 | Change of name, title or address |
Address after: 250101 Shandong province Ji'nan High-tech Development Zone, Road No. 1969 Patentee after: Laiwu Tianming Metallurgical Equipment Co., Ltd. Address before: 250014 Ji'nan, Lixia District, Shandong Lixia Road, No. 134 Patentee before: Shangdong Design Inst of Metallurgy |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131205 Granted publication date: 20050622 |