CN2635677Y - Air and gas double-preheating hot-blast stove - Google Patents

Air and gas double-preheating hot-blast stove Download PDF

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Publication number
CN2635677Y
CN2635677Y CN 03272580 CN03272580U CN2635677Y CN 2635677 Y CN2635677 Y CN 2635677Y CN 03272580 CN03272580 CN 03272580 CN 03272580 U CN03272580 U CN 03272580U CN 2635677 Y CN2635677 Y CN 2635677Y
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CN
China
Prior art keywords
gas
air
hotblast stove
temperature
flue
Prior art date
Application number
CN 03272580
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Chinese (zh)
Inventor
温向阳
Original Assignee
北京金信合达能源科技有限公司
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Priority to CN 03272580 priority Critical patent/CN2635677Y/en
Application granted granted Critical
Publication of CN2635677Y publication Critical patent/CN2635677Y/en

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Abstract

The utility model discloses a hot blast stove with air-gas double preheating, which comprises a hot blast stove with an air-gas inlet which is connected to a burner, an combustion chamber arranged above the burner, a heat accumulator arranged at the counterpart side of the combustion chamber, a low temperature flue of the hot blast stove connected with the hot blast stove which is communicated with a chimney, wherein, a high temperature branch flue is arranged on the hot blast stove, which intersects with the low temperature flue to form a preheating flue; an air preheater and a gas preheater are respectively communicated with the air inlet and the gas inlet. The utility model is characterized in that the hot blast stove can realize air- gas double preheating in combustion cycle and the vault temperature can be raised above 1350 DEG C; the supply air temperature from hot blast stove to blast furnace can be above 1200 DEG C, which can raise the output and lower the coke rate.

Description

Empty, gas double pre-heating hotblast stove

Technical field

The utility model relates to the hotblast stove that a kind of iron-smelting blast furnace uses, and relates to a kind of sky, gas double pre-heating hotblast stove specifically.

Background technology

Iron-smelting blast furnace infeeds high temperature air by hotblast stove and finishes the chemistry that reduction of iron ore becomes the pig iron.At present, the blast funnace hot blast stove in this field uses the self-produced blast furnace gas of blast furnace to be fuel in combustion period, and blast furnace gas is with air mixed firing in the combustion chamber, and high-temperature flue gas is discharged heat storage heating back by the heat storage in the hotblast stove.In the air-supply cycle, cold wind passes through with behind the heated heat storage, is preheated to be high temperature air, by air supply duct, gives blast furnace and uses.Because blast furnace gas calorific value is lower, the flame temperature during burning is also lower, and heated regenerator temperature is also lower.Therefore, hotblast stove is lower to hot blast that blast furnace provides in the air-supply cycle, is generally about 1000 ℃.Hot blast temperature is an important indicator of blast furnace ironmaking, and the method that improves hot blast temperature has: self-preheating combustion air technology; Additional combustion preheated air, coal gas technology etc.All there are some defectives in aforesaid method.As self-preheating combustion air technology, be to utilize the waste heat of hotblast stove after the blast furnace air-supply to come warm-up combustion-supporting air.Because self-preheating combustion air technology belongs to single preheated air,, and change bigger to the air feed system of hotblast stove so this technology is bigger for the life-span influence of ceramic combustor of hot-blast stove and regenerator lattice brick.Therefore, adopt self-preheating combustion air technology to improve hot blast temperature certain limitation is arranged.And additional combustion preheated air, coal gas technology are the roasting kilns of building a burning blast furnace gas.With heat while preheated air, the coal gas of burning generation, thus the technological process of raising hot blast temperature.This arts demand is built a roasting kiln in addition, and roasting kiln work, control are all very complicated, and floor space is big.Therefore, application all is subjected to certain restriction.

The utility model content

The purpose of this utility model is for solving the problem that above-mentioned technology exists, and provide a kind of self-produced blast furnace gas of blast furnace that utilizes to be fuel, the heat that self burns and produces, make hotblast stove in combustion period, will enter blast furnace gas, air preheating gradually in the burner, improve the temperature of hotblast stove, make blast furnace can improve sky, the gas double pre-heating hotblast stove of output, reduction coke ratio to the blast furnace air-supply.

For achieving the above object, technical solution of the present utility model is achieved like this, a kind of sky, gas double pre-heating hotblast stove, and it is to utilize high temperature is set on the hotblast stove divides flue, this high temperature divides flue and low temperature flue to intersect to connect to form into pre-hotflue; And in pre-hotflue, be respectively equipped with air preheater and gas preheating device, be communicated with air, gas inlet respectively.

The technical program also comprises:

In the inside that described high temperature divides flue can be arranged on hotblast stove, or its outside is set.

Described air preheater and the gas preheating device that is arranged in the pre-hotflue can be installed with the supporting use of independent hotblast stove, also can install with the supporting use of a plurality of hotblast stoves.

The characteristics effect that the utlity model has is: this hotblast stove uses the self-produced blast furnace gas of blast furnace to be fuel, the heat that utilizes blast furnace gas self burning to produce, make hotblast stove in combustion period, heat storage in the heat hot wind furnace of one side, blast furnace gas, the air that will enter in the burner is preheating to about 400 ℃ gradually on one side, can improve the hot blast throat temperature and reach more than 1350 ℃.Thereby hotblast stove can be reached more than 1200 ℃ to the blast furnace wind pushing temperature.Can make blast furnace improve output like this, reduce coke ratio.2, by dividing flue at the high temperature that is provided with on the hotblast stove, making hotblast stove in combustion period, the part high-temperature flue gas divides flue to be discharged into straight in the hotblast stove main flue by high temperature, and the promotion high-temperature flue gas has improved the bulk temperature of smoke evacuation after mixing with low-temperature flue gas.3, utilizing the sky, the gas preheating device that are provided with on the hotblast stove main flue, entering after preheating in the burner of hotblast stove, make hotblast stove in combustion period, self can realize air, gas double pre-heating.

Description of drawings

Fig. 1 is this novel structural representation.

Embodiment

Below in conjunction with accompanying drawing embodiment, to this novel being further described.

By sky shown in Figure 1, gas double pre-heating hotblast stove, it adopts cylindrical housings, its top has the hotblast stove 5 of vault 6, the burner of establishing in air intlet 1 that the bottom of its hotblast stove 5 side is provided with and gas inlet 2 and its hotblast stove 53 links to each other, the top that is positioned at burner 3 is combustion chamber 4, and by partition wall with it heat storage 7 separate.Make high-temperature flue gas enter the hotblast stove low temperature flue 10 that hotblast stove 5 bottom opposite sides are communicated with, connect preheating flue 12 by the low temperature flue gate valve 11 that is provided with on it by heat storage 7.This pre-hotflue is by dividing flue 8 being positioned at the hotblast stove high temperature that peripheral hardware one communicates on hotblast stove 5 housings on heat storage 7 tops, intersecting conductings with hotblast stove low temperature flue 10 and connect to form.And in pre-hotflue 12, air preheater 13 and gas preheating device 14 are set respectively.This air preheater 13 has cold-air duct 15 and cooled coal gas pipeline 18 respectively, and wherein hot-air duct 16 is connected with air intlet 1.Heating gas pipeline 19 is connected with gas inlet.On hot-air duct 16 and heating gas pipeline 19, be provided with warm air gate valve 17 and heating gas gate valve 20 respectively.The dual disposal of regulating and controlling high and low temperature, and divide at hotblast stove high temperature respectively high-temperature flue gate valve 9 and low temperature flue gate valve 11 are set on flue 8 and the hotblast stove low temperature flue 11.Connect chimney 21 by pre-hotflue 12.

Above-mentioned sky, gas double pre-heating hotblast stove belong to the internal combustion type firing system.The technical program also adapts to the top ignition system.

Hotblast stove high temperature in above-mentioned divides flue 8 to be arranged on the outside of hotblast stove 5.Also can be arranged on the inside of hotblast stove 5.

Related air preheater 13 and the gas preheating device 14 that is provided with on pre-hotflue 12 in above-mentioned can be by air intlet 1 and gas inlet 2 supporting the installing and using on the hot-air duct on it 16 and heating gas pipeline 19 and the independent hotblast stove 5.Also can make its air preheater 13 and gas preheating device 14, be connected empty, the gas preheating device of a public cover with sky, gas inlet on a plurality of hotblast stoves 5 respectively by the hot-air duct on it 16 and heating gas pipeline 19.

The use-pattern of this hotblast stove is: when hotblast stove is in state of combustion, freezing air, cooled coal gas are through air preheater 13 and gas preheating device 14, the sky that is preheated, coal enter the burner 3 of hotblast stove 5, mixed firing in combustion chamber 4, the high-temperature flue gas that burning produces, most of by the heat storage 7 in the hotblast stove 5, stay its most of heat in the heat storage 7 after, discharging low temperature flue 10.Another part of the high-temperature flue gas that burning produces, divide flue 8 directly to be discharged to low temperature flue 10 by the high temperature that is provided with, after mixing with low-temperature flue gas, high-temperature flue gas enters preheating flue 12, after being arranged on the air preheater 13 and gas preheating device 14 in the pre-hotflue 12, entering chimney 21 and enter atmosphere.Because this hot stove 5 is provided with high temperature and divides flue 8, so when Combustion of Hot Air Furnace is worked, increased substantially the whole temperature of smoke evacuation.Simultaneously, on flue, be provided with sky, gas preheating device, make and supply with Combustion of Hot Air Furnace behind sky, the gas double pre-heating and use.Because the raising of funnel temperature, the preheating temperature of air, coal gas also improve thereupon, the also corresponding raising of Combustion of Hot Air Furnace interior flame temperature, the hotblast stove dome temperature increases, and hotblast stove is improved to the ventilation temperature of blast furnace.

Claims (3)

1, empty, gas double pre-heating hotblast stove, comprise hotblast stove and on sky, gas inlet, be connected to burner, which is provided with the combustion chamber, respective combustion chamber one side is equipped with heat storage and coupled hotblast stove low temperature flue, be connected to chimney, it is characterized in that on described hotblast stove (5), being provided with high temperature and divide flue (8), this high temperature divides flue (8) and low temperature flue (10) the crossing pre-hotflue (12) that connects to form, and in pre-hotflue (12), be respectively equipped with air preheater (13) and gas preheating device (14), be communicated with empty, gas inlet (1 and 2) respectively.
2, by the described sky of claim 1, gas double pre-heating hotblast stove, it is characterized in that described high temperature divides flue (8) can be arranged on the inside of hotblast stove (5), or its outside is set.
3, by the described sky of claim 1, gas double pre-heating hotblast stove, the air preheater (13) and the gas preheating device ground (14) that it is characterized in that being provided with in the pre-hotflue (12) can be installed with the supporting use of independent hotblast stove (5), also can install with the supporting use of a plurality of hotblast stoves (5).
CN 03272580 2003-06-20 2003-06-20 Air and gas double-preheating hot-blast stove CN2635677Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03272580 CN2635677Y (en) 2003-06-20 2003-06-20 Air and gas double-preheating hot-blast stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03272580 CN2635677Y (en) 2003-06-20 2003-06-20 Air and gas double-preheating hot-blast stove

Publications (1)

Publication Number Publication Date
CN2635677Y true CN2635677Y (en) 2004-08-25

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CN 03272580 CN2635677Y (en) 2003-06-20 2003-06-20 Air and gas double-preheating hot-blast stove

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CN (1) CN2635677Y (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102428192A (en) * 2009-05-20 2012-04-25 保尔伍斯股份有限公司 Method for operating a regenerative heater
CN101128606B (en) * 2005-02-01 2012-06-20 丹尼利克里斯有限公司 Support assembly for supporting heat regeneration checker work in a hot blast stove, hot blast stove provided with said support assembly, method of producing hot air using said hot blast stove
CN102620424A (en) * 2012-04-10 2012-08-01 河南省豫兴热风炉工程技术有限公司 Top combustion stove with layered high and low temperature flue dual-preheating system
CN102618681A (en) * 2012-04-19 2012-08-01 河南省豫兴热风炉工程技术有限公司 Grate-free double-preheating top combustion type hot blast stove
CN102759108A (en) * 2012-07-31 2012-10-31 中冶南方(武汉)威仕工业炉有限公司 Parallel type air coal dual-preheating radiation tube preheating system and preheating method
CN102808057A (en) * 2011-05-30 2012-12-05 温向阳 Coal base direct reduction iron process of external heating horizontal channel type furnace
CN103206706A (en) * 2013-04-24 2013-07-17 黄华杰 Efficient energy-saving combustion device and system of boiler
CN103343177A (en) * 2013-07-05 2013-10-09 郑州安耐克实业有限公司 Method for obtaining high air temperature with low calorific value gas and high-temperature combustion air
CN103353121A (en) * 2013-07-24 2013-10-16 江苏海事职业技术学院 Smoke waste heat deep recycling system for dead-burn blast furnace gas boiler
CN103471130A (en) * 2013-06-08 2013-12-25 天津高德恒立科技有限公司 Preheating method and preheating device for gas burner
CN107421117A (en) * 2017-06-30 2017-12-01 翟延军 A kind of SiC ceramic coil pipe hot-blast stove and preparation method thereof

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101128606B (en) * 2005-02-01 2012-06-20 丹尼利克里斯有限公司 Support assembly for supporting heat regeneration checker work in a hot blast stove, hot blast stove provided with said support assembly, method of producing hot air using said hot blast stove
TWI489065B (en) * 2009-05-20 2015-06-21 Wurth Paul Sa Method for operating a regenerative heater
CN102428192B (en) * 2009-05-20 2013-11-27 保尔伍斯股份有限公司 Method for operating regenerative heater
CN102428192A (en) * 2009-05-20 2012-04-25 保尔伍斯股份有限公司 Method for operating a regenerative heater
CN102808057A (en) * 2011-05-30 2012-12-05 温向阳 Coal base direct reduction iron process of external heating horizontal channel type furnace
CN102620424A (en) * 2012-04-10 2012-08-01 河南省豫兴热风炉工程技术有限公司 Top combustion stove with layered high and low temperature flue dual-preheating system
CN102618681A (en) * 2012-04-19 2012-08-01 河南省豫兴热风炉工程技术有限公司 Grate-free double-preheating top combustion type hot blast stove
CN102759108A (en) * 2012-07-31 2012-10-31 中冶南方(武汉)威仕工业炉有限公司 Parallel type air coal dual-preheating radiation tube preheating system and preheating method
CN103206706A (en) * 2013-04-24 2013-07-17 黄华杰 Efficient energy-saving combustion device and system of boiler
CN103206706B (en) * 2013-04-24 2016-09-28 黄华杰 A kind of high efficiency boiler energy-saving combustion apparatus and system
CN103471130A (en) * 2013-06-08 2013-12-25 天津高德恒立科技有限公司 Preheating method and preheating device for gas burner
CN103343177A (en) * 2013-07-05 2013-10-09 郑州安耐克实业有限公司 Method for obtaining high air temperature with low calorific value gas and high-temperature combustion air
CN103353121A (en) * 2013-07-24 2013-10-16 江苏海事职业技术学院 Smoke waste heat deep recycling system for dead-burn blast furnace gas boiler
CN107421117A (en) * 2017-06-30 2017-12-01 翟延军 A kind of SiC ceramic coil pipe hot-blast stove and preparation method thereof
CN107421117B (en) * 2017-06-30 2018-07-06 翟延军 A kind of SiC ceramic coil pipe hot-blast stove and preparation method thereof

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GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20101221

Address after: 100083, room 6, building 30, No. 102, Haidian District, Beijing, Xueyuan Road

Patentee after: Beijing saineng Jieheda stove Technology Co. Ltd.

Address before: 100070 Beijing city Fengtai District Haiying Road No. 3

Patentee before: Beijing Jinxinheda Energy Source Sci-Tech Co., Ltd.

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 100070 NO. 3, HAIYING ROAD, FENGTAI DISTRICT, BEIJING TO: 100083 ROOM 102, BUILDING 6, NO. 30, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING

ASS Succession or assignment of patent right

Owner name: BEIJING SAINENGJIE HEDA STOVE TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: JINXIN-HEDA ENERGY-SOURCE SCIENCE-TECHNOLOGY CO., LTD., BEIJING

Effective date: 20101221

C41 Transfer of patent application or patent right or utility model
CX01 Expiry of patent term

Expiration termination date: 20130620

Granted publication date: 20040825

C17 Cessation of patent right