CN1080659A - Useless wind recoverying and utilizing method of hotblast stove and device - Google Patents
Useless wind recoverying and utilizing method of hotblast stove and device Download PDFInfo
- Publication number
- CN1080659A CN1080659A CN 92105032 CN92105032A CN1080659A CN 1080659 A CN1080659 A CN 1080659A CN 92105032 CN92105032 CN 92105032 CN 92105032 A CN92105032 A CN 92105032A CN 1080659 A CN1080659 A CN 1080659A
- Authority
- CN
- China
- Prior art keywords
- stove
- hotblast stove
- useless
- air
- valve
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The present invention is method and the equipment thereof that the useless wind of a kind of blast funnace hot blast stove is recycled.Utilize the hotblast stove after blowing to give up wind to the hotblast stove pressurising after burning.This method recyclable 40～50% useless wind, save energy, the undulating quantity of blast furnace blast when stove is changed in reduction, it is stable to be beneficial to the working of a furnace, and can shorten and change the stove time.The present invention is specially adapted to the large blast furnace of high top pressure operation.
Description
The present invention relates to method, equipment that the useless wind of blast funnace hot blast stove is recycled.The present invention is specially adapted to the large blast furnace of high top pressure operation.
Blast funnace hot blast stove is a kind of heat regenerator of periodic duty.Heat after coal gas (perhaps other fuel) burning is absorbed by the heat storage in the hotblast stove.After accumulation of heat acquires a certain degree, the cease combustion accumulation of heat.Cold-blast absorbs heat by hotblast stove from heat storage, send into blast furnace and be heated to form hot blast.But high blast temperature reinforcing blast furnace is smelted, and reduces coke consumption.Every blast furnace will have the just continuous ordinary production of possibility of two hotblast stoves at least.A general large blast furnace all disposes 3～4 hotblast stoves, and periodically switches by certain working system.A hotblast stove workflow is in each cycle: " burning " → " cold stoking " → " air-supply " → " cold stoking " → " burning ", along with the continuous development and the reinforcement of blast furnace smelting technology, the pressure of air supply of blast furnace constantly develops to high top pressure operation.Be in the hotblast stove of ventilation state and the pressure of hot and cold airduct road system and can reach 0.3～0.5MPa, even higher pressure.And change the hotblast stove of state of combustion and coal gas over to, combustion air pipeline system is in atmospheric pressure state.When changing furnace operating, the hotblast stove that as shown in Figure 1, is in " air-supply " state though this hotblast stove cuts off with blast furnace air- supply pipeline 7,8, is in " cold stoking " state after cold blast valve 2, hot blast valve 1 are closed, and furnace pressure still is in high pressure conditions.Chimney valve 4, combustion valve 6 pressure at both sides differences are very big, desire to open very difficulty.Enter the useless air-valve 5 that " burning " state need be opened earlier, " useless wind " in the stove be discharged in flue 9(or the atmosphere), carry out pressure release.After chimney valve 4, combustion valve 6 pressure at both sides basic equalization, just can open chimney valve 4 and combustion valve 6, hotblast stove just can change " burning " state over to.The useless wind of the heat of stove inner high voltage has just wasted like this, and produces very high noise and contaminate environment when pressure release.Want cease combustion when the hotblast stove that is in " burning " state meets the requirements of temperature, with combustion valve 6, after chimney valve 4 was closed, this hotblast stove changed " cold stoking " state again over to, but still be in atmospheric pressure state in the stove this moment.The cold blast valve 2 of this stove, hot blast valve 1 are owing to cold-air duct 8, heating duct 7 remain and be in high pressure, and both sides pressure reduction is very big, open also very difficulty.Open 3 pressurisings in stove earlier of cold wind equalizing valve, after furnace pressure and 7,88 equilibriums of hot and cold air pipe line, cold blast valve 2, hot blast valve 1 just are opened.Hotblast stove just changes " air-supply " state by " burning " state over to through " cold stoking " state.In the pressurising process, owing to have part wind to be used to pressurising in the cold air duct 8, if this moment, blast furnace blowing engine can not increase the required air quantity of pressurising automatically, then the pressure to blast furnace air supply system will reduce suddenly, this unexpected pressure surge is extremely harmful to the normal stably manufactured of blast furnace, equalizing valve is generally all smaller for this reason, carries out pressurising slowly as far as possible, and blast wandering is limited in the scope that the blast furnace stable operation allowed as much as possible.Even still happen occasionally because of blast wandering causes the phenomenon of conditions of blast furnace unstability when like this, changing stove.Lentamente pressurising prolonged and changed the furnace operating time (the pressurising time account for whole change the furnace operating time 1/2～2/3), relatively just reduced time of Combustion of Hot Air Furnace accumulation of heat, have influence on the raising of wind-warm syndrome and stable.The advanced blast furnace of some equipments for this reason, its gas blower dispose when changing-over stove operate, can increase air quantity automatically Controlling System stablize pressure of blast, this has not only increased the air blast consumption, and blower fan is when normally moving, and in fact fails the full blast amount to turn round.Another kind method is exactly that a pressurising special fan or a source of the gas is set specially, and this has not only increased equipment and has also increased energy consumption simultaneously.
Purpose of the present invention is exactly the deficiency at above-mentioned present technology, provides a kind of equipment simple, useless wind recoverying and utilizing method of easy to operate hotblast stove and device.
To disposing the blast furnace of three above hotblast stoves, only need set up a useless wind house steward 11, the useless air-valve 5 of every hotblast stove is linked to be a system, on useless wind house steward 11, sets up a useless wind main valve 12(shown in figure two), and adopt the new furnace operating program of changing to change furnace operating.When changing stove, the good hotblast stove that will burn earlier changes " cold stoking " state over to by " burning " state, and open its useless air-valve 5, and then the hotblast stove that will be in air-supply latter stage changes " cold stoking " state (continuing to blow to blast furnace but at least still will maintain a hotblast stove this moment) over to by " air-supply " state, also its useless air-valve 5 is opened then, this moment, these two hotblast stoves formed connected component by useless wind house steward 11, and the useless wind of the heat of stove inner high voltage will carry out pressurising to the good hotblast stove that burns fast through useless wind house steward.After two hotblast stove pressure equalizatioies, the useless air-valve 5 that will change that hotblast stove of " air-supply " state over to cuts out, open the cold wind equalizing valve and continue pressurising, can change " air-supply " state after the pressure equalization over to, can open simultaneously useless wind main valve 12 at this, remaining useless wind in the former air-supply stove is put into flue 9, open chimney valve 4, combustion valve 6 after the pressure equalization, send into coal gas and combustion air and change " burning " state over to.
Utilizing effect of the present invention, at first is can reclaim 40～50% useless wind as pressurising usefulness, has saved the energy thereby reduced the air blast invisible waste; The second, the undulating quantity of blast furnace blast pressure reduces when changing the stove pressurising, helps the stable of conditions of blast furnace; The 3rd, can shorten pressurising time and whole changing the furnace operating time, also just increased combustion time; The 4th, the noise in the time of can reducing useless wind discharging, and only need discharge outlet at useless wind main valve that a sound arrester is set can further to reduce noise, reduce the sound pollution environment; The 5th, when can't the twin furnace parallel connection owing to hotblast stove maintenance or other reason hotblast stove or during the mid-shunt air-supply, the wind main valve that only needs to give up is often opened, hot blast stove system still can change stove by original schedule of operation, does not influence the hotblast stove ordinary production.
The present invention compares with existing hot blast stove system has only increased useless wind house steward 11 and a useless wind main valve 12, and institute's increase equipment and pipeline are few, and promptly simple in structure, purposes is wide, and newly-designed hot blast stove system and existing hot blast stove system all can adopt.Existing hotblast stove can carry out rebuilding construction under the situation that does not influence the blast furnace ordinary production.The present invention all is suitable for various internal combustion types, external combustion type, top combustion stove.For the blast furnace optimum that disposes 4 hotblast stoves, useless wind recovery utilization rate height also can adopt for the blast furnace that only disposes 3 hotblast stoves, and just useless wind can't reclaim when stove is changed in single stove air-supply, just recycles when stove is changed in the twin furnace air-supply.
The present invention not only can use on iron-smelting blast furnace, also can be applicable to have the regenerator interchanger (stove) of other industry of similar operation, systems such as the smelting furnace of the magnetohydrodynamic generator equipment of the blast furnace of smelting as non-ferrous metal, the heat accumulating type cracking of petroleum chemical industry or converter, power industry and chemical fertilizer, building material industry, stoving oven.
Description of drawings: Fig. 1 is existing hotblast stove pipeline valve system schematic.
Fig. 2 is a hotblast stove pipeline valve system schematic of the present invention.
1-hot blast valve wherein; The 2-cold blast valve; The 3-equalizing valve; The 4-chimney valve; The 5-air-valve that gives up; The 6-combustion valve; The 7-heating duct; The 8-cold-air duct; The 9-flue; The 10-hotblast stove; The 11-wind house steward that gives up; The 12-wind main valve that gives up; The 13-chimney.
Claims (3)
1, a kind of useless wind recoverying and utilizing method of hotblast stove is characterized in that with the useless wind of the hotblast stove after the air-supply to the hotblast stove pressurising after burning.
2, according to the useless wind recoverying and utilizing method of the described hotblast stove of claim 1, it is characterized in that " burning " changes the hotblast stove of " cold stoking " over to and change " cold stoking " hotblast stove UNICOM over to " air-supply ", after all pressing, the useless air-valve that will change the hotblast stove of " air-supply " over to cuts out, continue pressurising with equalizing valve, and open the useless wind pressure release of remnants that useless wind main valve will change the incendiary hotblast stove over to.
3, the useless wind recycle device of a kind of hotblast stove is characterized in that useless air-valve and the total pipe coupling of useless wind with every hotblast stove, and useless wind house steward is by useless wind main valve and flue UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105032 CN1080659A (en) | 1992-06-26 | 1992-06-26 | Useless wind recoverying and utilizing method of hotblast stove and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105032 CN1080659A (en) | 1992-06-26 | 1992-06-26 | Useless wind recoverying and utilizing method of hotblast stove and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1080659A true CN1080659A (en) | 1994-01-12 |
Family
ID=4941149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92105032 Pending CN1080659A (en) | 1992-06-26 | 1992-06-26 | Useless wind recoverying and utilizing method of hotblast stove and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080659A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352095A (en) * | 2013-07-16 | 2013-10-16 | 莱芜钢铁集团有限公司 | Device and method for prolonging banking time of hot blast heater |
| CN103509904A (en) * | 2012-06-29 | 2014-01-15 | 上海梅山钢铁股份有限公司 | Waste gas pressurizing device and pressurizing method for blast-furnace hot blast stove |
| CN103966379A (en) * | 2014-05-25 | 2014-08-06 | 北京首钢国际工程技术有限公司 | Waste air recycling device of hot blast stove with waste air buffer tank |
| CN105051217A (en) * | 2012-12-21 | 2015-11-11 | 首要金属科技有限责任公司 | A method and apparatus for supplying blast to a blast furnace |
| CN109055641A (en) * | 2018-08-31 | 2018-12-21 | 中冶南方工程技术有限公司 | Recycle the heat exchanger purging soot cleaning system and method for hot-blast stove emission coal gas |
| CN109082492A (en) * | 2018-08-31 | 2018-12-25 | 中冶南方工程技术有限公司 | A kind of heat exchanger purge system and method using hot-blast stove release exhaust gas |
| CN114774606A (en) * | 2022-02-28 | 2022-07-22 | 鞍钢股份有限公司 | Blast furnace hot blast stove changing and pressure equalizing method |
| CN115287386A (en) * | 2022-06-30 | 2022-11-04 | 山东省冶金设计院股份有限公司 | Pressure equalizing system and method for full recovery of waste gas of hot blast stove |
| CN115838843A (en) * | 2023-02-20 | 2023-03-24 | 山西建龙实业有限公司 | Device and method for recovering residual hot air of hot blast stove |
-
1992
- 1992-06-26 CN CN 92105032 patent/CN1080659A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103509904A (en) * | 2012-06-29 | 2014-01-15 | 上海梅山钢铁股份有限公司 | Waste gas pressurizing device and pressurizing method for blast-furnace hot blast stove |
| CN105051217A (en) * | 2012-12-21 | 2015-11-11 | 首要金属科技有限责任公司 | A method and apparatus for supplying blast to a blast furnace |
| US9868998B2 (en) | 2012-12-21 | 2018-01-16 | Primetals Technologies Ltd | Method and apparatus for supplying blast to a blast furnace |
| CN103352095A (en) * | 2013-07-16 | 2013-10-16 | 莱芜钢铁集团有限公司 | Device and method for prolonging banking time of hot blast heater |
| CN103966379A (en) * | 2014-05-25 | 2014-08-06 | 北京首钢国际工程技术有限公司 | Waste air recycling device of hot blast stove with waste air buffer tank |
| CN103966379B (en) * | 2014-05-25 | 2015-08-05 | 北京首钢国际工程技术有限公司 | A kind of hotblast stove with useless wind surge tank gives up wind retrieving arrangement |
| CN109055641A (en) * | 2018-08-31 | 2018-12-21 | 中冶南方工程技术有限公司 | Recycle the heat exchanger purging soot cleaning system and method for hot-blast stove emission coal gas |
| CN109082492A (en) * | 2018-08-31 | 2018-12-25 | 中冶南方工程技术有限公司 | A kind of heat exchanger purge system and method using hot-blast stove release exhaust gas |
| CN109055641B (en) * | 2018-08-31 | 2020-05-08 | 中冶南方工程技术有限公司 | Heat exchanger purging and ash removing system and method for recycling coal gas emitted by hot blast stove |
| CN114774606A (en) * | 2022-02-28 | 2022-07-22 | 鞍钢股份有限公司 | Blast furnace hot blast stove changing and pressure equalizing method |
| CN115287386A (en) * | 2022-06-30 | 2022-11-04 | 山东省冶金设计院股份有限公司 | Pressure equalizing system and method for full recovery of waste gas of hot blast stove |
| CN115287386B (en) * | 2022-06-30 | 2023-09-01 | 山东省冶金设计院股份有限公司 | Pressure equalizing system and method for full recovery of waste gas of hot blast stove |
| CN115838843A (en) * | 2023-02-20 | 2023-03-24 | 山西建龙实业有限公司 | Device and method for recovering residual hot air of hot blast stove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103145328B (en) | A kind of method of basalt blast furnace slag in preparation of rock wool board comprehensive utilization | |
| CN200988857Y (en) | Coal base environment protection type steel strip type reducing furnace | |
| CN1080659A (en) | Useless wind recoverying and utilizing method of hotblast stove and device | |
| CN205448291U (en) | A energy -saving hot -blast furnace for flue gas is handled | |
| CN105642660A (en) | Resourceful treatment equipment for solid wastes | |
| CN205535842U (en) | Two room heat accumulation after burner of domestic waste | |
| CN201652331U (en) | Heat-storage type combustion system of high-temperature industrial furnace | |
| CN2591047Y (en) | Hot-blast furnace waste gas comprehensive utilizing device | |
| CN201676997U (en) | Single heat accumulating type forging heating furnace for burning hot dirty coal gas | |
| CN209840115U (en) | Waste fermentation system is reinforceed in incineration boiler flue gas waste heat recovery | |
| CN204535441U (en) | The energy-saving gas kiln that a kind of waste heat is combustion-supporting | |
| CN211794281U (en) | Double-furnace double-combustion tobacco curing equipment | |
| CN101063593A (en) | Method for reducing coal consumption of hot-air stove | |
| CN2451905Y (en) | Honey-comb thermal accumulator gas and air double-preheating heat storage combustor for heating furnace | |
| CN207962619U (en) | A kind of combustion system of high efficiency reciprocating combustion solid fuel | |
| CN205528868U (en) | Blast furnace gas uses multipurposely facility | |
| CN207231215U (en) | A kind of intelligent natural gas kiln with novel energy-conserving technology | |
| CN101797622B (en) | Single heat storage type forge heating furnace for hot crude gas | |
| CN206755184U (en) | Domestic waste incineration water-cooled grate system and its incinerator | |
| CN201221760Y (en) | Fire coal type boiler coal fines blowing combustion apparatus | |
| CN108361684A (en) | A kind of high temperature less boiler and combustion method | |
| CN103486605A (en) | High-efficiency micro-emission energy-saving boiler capable of recycling remaining energy | |
| CN209744365U (en) | Environment-friendly boiler with high fuel burnout rate | |
| CN2175872Y (en) | Air classification step-burning boiling kiln | |
| CN210291910U (en) | Sectional type heat accumulation oxidation furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |