CN201589526U - Single preheating sintering ignition heat-preserving furnace - Google Patents
Single preheating sintering ignition heat-preserving furnace Download PDFInfo
- Publication number
- CN201589526U CN201589526U CN2010200223399U CN201020022339U CN201589526U CN 201589526 U CN201589526 U CN 201589526U CN 2010200223399 U CN2010200223399 U CN 2010200223399U CN 201020022339 U CN201020022339 U CN 201020022339U CN 201589526 U CN201589526 U CN 201589526U
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- air
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- heat
- heat exchanger
- pipe
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- 238000005245 sintering Methods 0.000 title claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 25
- 239000002912 waste gas Substances 0.000 claims abstract description 11
- 238000002791 soaking Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000000203 mixture Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The utility model relates to a single preheating sintering ignition heat-preserving furnace with simple structure, less pollution, significant energy-saving effect and high safety. The furnace comprises an ignition section and a heat-preserving furnace, which are integrated with each other and are arranged on the upper part of a sintering machine; the heat-preserving section comprises an air preheating furnace, and an air heat-exchanger is arranged in the air preheating furnace; the ignition section comprises a plurality of combustion nozzles, which are connected with a blast-furnace gas pipe and a hot air pipe. A cold air inlet of the air heat-exchanger is connected with a cold air input pipe, and a fan is arranged on the cold air input pipe; a hot air outlet of the air heat-exchanger is connected with the inlet of hot air pipe. When the air heat-exchanger is arranged above the trolley and works, waste gas output by the air preheating furnace can conduct heat preserving through sinter mixture on the trolley and is absorbed into a large flue through the sinter mixture surface on the trolley, meanwhile, the large flue is connected with a hot waste gas heat-energy recovery system and a waste gas processing system, so as to recycle the heat energy and remove sulfur and other harmful elements in the waste gas.
Description
Technical field
The utility model relates to the heat of metallurgy industry and burns machine node stove, is specifically related to a kind of single preheating, sintering, igniting and heat insulating furnace.
Background technology
Sintering is a metallurgy industry, and particularly the important component part of ore set-up procedure in the smelting iron and steel also is simultaneously one of key operation of the whole smelting process energy consumption index of influence.It is fuel that present most of sintering plant ignition furnace all adopts low-heat value gas (being generally blast furnace gas), because the low-heat value gas calorific value is low, must carry out preheating to coal gas or air and could satisfy the required firing temperature of sintering process, therefore build the low-heat value gas ignition furnace, necessary auxiliary construction preheating furnace preheating gas and air, cause the ignition furnace profile big, investment is high, and potential safety hazard is many.In addition, the waste gas that produces when adopting preheating furnace preheated air or coal gas directly enters in the atmosphere, is unfavorable for environmental protection and energy-saving and emission-reduction.
Chinese patent notification number CN2708125 discloses a kind of heat accumulating type ignition furnace of sintering machine of low-heat value gas because the interior difficulty of ignition furnace has clean thermal source, and domestic do not have product to come into operation so far.And poor from the preheating gas ignition holding furnace because of pre-heat effect, the sintering deposit after the igniting there is the quenching effect and influences the intensity of sintering deposit.If adopt the form of two preheatings, complex structure, the cost height when the preheating blast furnace gas, is prone to the situation of heat exchanger breakage, so there is big potential safety hazard.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, of reduced contamination, energy-saving effect is remarkable, security is higher single preheating, sintering, igniting and heat insulating furnace.
For solving the problems of the technologies described above, single preheating, sintering, igniting and heat insulating furnace of the present utility model comprises igniting section and soaking zone, is characterized in: igniting section and soaking zone be one each other, and is arranged on sintering board top; Soaking zone comprises the air preheat stove, is provided with air heat exchanger in the air preheat stove; The igniting section comprises a plurality of burners, and each burner links to each other with warm-air pipe with the blast furnace gas pipe; The cool air inlet of described air heat exchanger links to each other with the cold air input pipe, and the cold air input pipe is provided with blower fan; The hot air outlet of air heat exchanger links to each other with the inlet of described warm-air pipe; Described air heat exchanger is located at the top of chassis, and during work, sinter mixture on the waste gas chassis of exporting in the air preheat stove is incubated and the sintered compound charge level on chassis sucks large flue, this large flue links to each other with exhaust treatment system with the hot waste gas heat reclaiming system, to recycle heat energy and the harmful elements such as sulphur that remove in the waste gas.
Further, described air preheat stove comprises a plurality of preheating furnace burners, and each preheating furnace burner links to each other with the cold air input pipe with the blast furnace gas pipe; The cold air input pipe is provided with valve and preheating furnace blower fan; The dead ahead of each preheating furnace burner is provided with firebreak, directly washes away the heat exchanger tube of air heat exchanger, the service life of guaranteeing heat exchanger tube with the flame that prevents preheating furnace burner output; Be provided with opening between the roof of the top of firebreak and air preheat stove, described air heat exchanger is located at the opposite side of firebreak, thereby makes high-temperature flue gas enter the preheated air heat exchanger through this opening.
Further, air heat exchanger is tubular type, fountain or dividing wall type heat exchanger; Air heat exchanger comprises first group of thermal-collecting tube and second group of thermal-collecting tube of series connection, and along with air heat expands, the heat exchange area of first group of thermal-collecting tube is less than the heat exchange area of second group of thermal-collecting tube.
Further, in the igniting section, the waste gas that produces after hot-air and the blast furnace gas mixed combustion in the igniter burner sucks large flue through the sintered compound charge level on the chassis (under the powerful air draught effect at large flue, having a large amount of venting channels on the sintered compound charge level all the time).
The utlity model has positive effect: in (1) single preheating, sintering, igniting and heat insulating furnace of the present utility model, only air is heated, make the combustion air of ignition furnace reach 350-450 ℃, through with low-calorie blast furnace gas mixed combustion the time, firing temperature reaches 1050-1200 ℃, thereby satisfies the required firing temperature of sintering process.Owing to blast furnace gas is not heated, prevented from effectively that blast furnace gas from leaking because of heat exchanger is damaged to cause personnel's danger when heating, so security is higher.(2) at soaking zone air preheat furnace structure compactness is set, the air fed distance of preheating is short, and cost is low, combustion-supporting usefulness height.(3) volume ratio of air in the preheating furnace burner and blast furnace gas is 1.1: 1 to 1.5: 1, thereby increase the oxygen content that has added the hot flue gas in the air preheat stove, this can make the coke in the sinter mixture on the chassis be burnt away, guaranteed sintering velocity, and hot flue gas can improve the environment temperature of soaking zone, avoid the generation of quenching, improved the tumbler index of sintering deposit.(4) by warm-up combustion-supporting air, reduced the consumption of blast furnace gas, energy-saving effect is remarkable.(5) directly enter the sintering charge level behind the hot smoke pre-heating air joint of the oxygen enrichment heat exchanger that the air preheat stove produces and suck large flue, thereby the recovery system of entering and exhaust treatment system have reduced toxic emission.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the utility model is described in further detail, wherein
Fig. 1 is the cross-sectional view of the single preheating, sintering, igniting and heat insulating furnace among the embodiment.
Fig. 2 is the vertical view of the single preheating, sintering, igniting and heat insulating furnace of Fig. 1.
Fig. 3 is the A-A sectional structure chart of Fig. 2.
Fig. 4 is the B-B sectional structure chart of Fig. 2.
Fig. 5 is the single preheating, sintering, igniting and heat insulating furnace among the embodiment and the structural representation of large flue.
The specific embodiment
See Fig. 1-5, the single preheating, sintering, igniting and heat insulating furnace of present embodiment comprises: igniting section 1 and soaking zone 2, and igniting section 1 and soaking zone 2 be one each other, is arranged on sintering pallet 12 tops; Soaking zone 2 comprises air preheat stove 3, is provided with air heat exchanger 6 in the air preheat stove 3; Igniting section 1 comprises a plurality of burners 9, and each burner 9 links to each other with warm-air pipe 7 with blast furnace gas pipe 8; The cool air inlet 4 of described air heat exchanger 6 links to each other with cold air input pipe 4, and cold air input pipe 4 is provided with blower fan 21; The hot air outlet of air heat exchanger 6 links to each other with the inlet of described warm-air pipe 7; Described air heat exchanger 6 is located at the top of chassis 12, and when work, and the waste gas of output is incubated the sinter mixture on the chassis 12 and the sintered compound charge level on chassis 12 sucks large flue 20 in the air preheat stove 3.
Described air preheat stove 3 comprises a plurality of preheating furnace burners 5, and each preheating furnace burner 5 links to each other with cold air input pipe 4 with blast furnace gas pipe 8; Cold air input pipe 4 is provided with valve 22 and preheating furnace blower fan 17.The dead ahead of each preheating furnace burner 5 is provided with firebreak 11, is provided with opening between the roof of the top of firebreak 11 and air preheat stove 3, and described air heat exchanger 6 is located at the opposite side of firebreak 11.
The air in the described preheating furnace burner 5 and the volume ratio of blast furnace gas are 1.2: 1.
Described air heat exchanger 6 is tubular type, fountain or dividing wall type heat exchanger, it comprises the first order pipe heat exchanger 6-1 and the second level pipe heat exchanger 6-2 of series connection, the heat exchange area of first order pipe heat exchanger 6-1 is less than the heat exchange area among the pipe heat exchanger 6-2 of the second level, and the cool air inlet caliber of first order pipe heat exchanger 6-1 is less than the hot air outlet caliber of second level pipe heat exchanger 6-2.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to the conspicuous change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.
Claims (3)
1. single preheating, sintering, igniting and heat insulating furnace comprises: igniting section (1) and a soaking zone (2) is characterized in that: igniting section (1) and soaking zone (2) be one each other, and is arranged on sintering pallet (12) top; Soaking zone (2) comprises air preheat stove (3), is provided with air heat exchanger (6) in the air preheat stove (3);
Igniting section (1) comprises a plurality of burners (9), and each burner (9) links to each other with warm-air pipe (7) with blast furnace gas pipe (8);
The cool air inlet of described air heat exchanger (6) links to each other with cold air input pipe (4), and cold air input pipe (4) is provided with blower fan (21); The hot air outlet of air heat exchanger (6) links to each other with the inlet of described warm-air pipe (7);
Described air heat exchanger (6) is located at the top of chassis (12), and the sintered compound charge level that the waste gas in the air preheat stove (3) is suitable on chassis (12) sucks large flue (20).
2. single preheating, sintering, igniting and heat insulating furnace according to claim 1, it is characterized in that: the volume ratio of air and blast furnace gas was 1.1: 1 to 1.5: 1 a preheating furnace burner (5) when described air preheat stove (3) comprised a plurality of the burning, and each preheating furnace burner (5) links to each other with cold air input pipe (4) with blast furnace gas pipe (8); The dead ahead of each preheating furnace burner (5) is provided with firebreak (11), is provided with opening between the roof of the top of firebreak (11) and air preheat stove (3), and described air heat exchanger (6) is located at the opposite side of firebreak (11).
3. single preheating, sintering, igniting and heat insulating furnace according to claim 2 is characterized in that: described air heat exchanger (6) is tubular type, fountain or dividing wall type heat exchanger; Air heat exchanger (6) comprises first group of thermal-collecting tube (6-1) and second group of thermal-collecting tube (6-2) of series connection, and the heat exchange area of first group of thermal-collecting tube (6-1) is less than the area of second group of thermal-collecting tube (6-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200223399U CN201589526U (en) | 2010-01-21 | 2010-01-21 | Single preheating sintering ignition heat-preserving furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200223399U CN201589526U (en) | 2010-01-21 | 2010-01-21 | Single preheating sintering ignition heat-preserving furnace |
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| Publication Number | Publication Date |
|---|---|
| CN201589526U true CN201589526U (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200223399U Expired - Fee Related CN201589526U (en) | 2010-01-21 | 2010-01-21 | Single preheating sintering ignition heat-preserving furnace |
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| Country | Link |
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| CN (1) | CN201589526U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667685A (en) * | 2013-12-27 | 2014-03-26 | 中冶长天国际工程有限责任公司 | Series preheating method and series preheating system for coal gas of sintering ignition furnace |
| CN105066702A (en) * | 2015-09-17 | 2015-11-18 | 山东钢铁股份有限公司 | Method for igniting air by taking hot air from closed movable ring-shaped container for preheating and sintering |
| CN112539660A (en) * | 2020-12-01 | 2021-03-23 | 马鞍山钢铁股份有限公司 | Online micro-positive pressure heat preservation method and system for sintering ignition furnace |
-
2010
- 2010-01-21 CN CN2010200223399U patent/CN201589526U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667685A (en) * | 2013-12-27 | 2014-03-26 | 中冶长天国际工程有限责任公司 | Series preheating method and series preheating system for coal gas of sintering ignition furnace |
| CN103667685B (en) * | 2013-12-27 | 2015-07-01 | 中冶长天国际工程有限责任公司 | Series preheating method and series preheating system for coal gas of sintering ignition furnace |
| CN105066702A (en) * | 2015-09-17 | 2015-11-18 | 山东钢铁股份有限公司 | Method for igniting air by taking hot air from closed movable ring-shaped container for preheating and sintering |
| CN112539660A (en) * | 2020-12-01 | 2021-03-23 | 马鞍山钢铁股份有限公司 | Online micro-positive pressure heat preservation method and system for sintering ignition furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU HEISHAN SINTERING IGNITION FURNACE MANUF Free format text: FORMER OWNER: SUN XIAOPING Effective date: 20120530 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120530 Address after: 213000, Changzhou, Jiangsu Province, three rivers Feng Feng Village Patentee after: Changzhou Heishan sinter ignition furnace manufacturing Co., Ltd. Address before: 213000, No. 148 village, Wuyi village, Wuyi village, Hengshan Town, Wujin District, Changzhou, Jiangsu Patentee before: Sun Xiaoping |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20130121 |