CN102618681A - Grate-free double-preheating top combustion type hot blast stove - Google Patents
Grate-free double-preheating top combustion type hot blast stove Download PDFInfo
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- CN102618681A CN102618681A CN2012101158899A CN201210115889A CN102618681A CN 102618681 A CN102618681 A CN 102618681A CN 2012101158899 A CN2012101158899 A CN 2012101158899A CN 201210115889 A CN201210115889 A CN 201210115889A CN 102618681 A CN102618681 A CN 102618681A
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- heat exchanger
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- flue
- heat storage
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 49
- 239000003034 coal gas Substances 0.000 claims abstract description 11
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 238000005338 heat storage Methods 0.000 claims description 39
- 208000011580 syndromic disease Diseases 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003546 flue gas Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000002912 waste gas Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The invention relates to a grate-free double-preheating top combustion type hot blast stove, which effectively solves the problems that the conventional hot blast stove is complex in structure and frequent in conversion, valves and investment are increased, much coal gas is produced, the temperature of the heat accumulating chamber of the conventional hot blast stove is reduced and the like. The upper part of the hot blast stove is provided with a hot blast outlet; a supporting body for supporting a heat accumulator is arranged on the lower part of a heat accumulating chamber in the hot blast stove; a smoke outlet on the lower part is connected with a plate heat exchanger; the plate heat exchanger is provided with an air inlet; the plate heat exchanger is connected with a combustion-supporting air inlet of the hot blast stove; the exhaust port of the plate heat exchanger is connected with a tubular heat exchanger; the tubular heat exchanger is provided with a gas inlet and a gas outlet; the gas outlet is connected with a combustion-supporting gas inlet of the hot blast stove; the combustion-supporting gas inlet and the combustion-supporting air inlet are connected with a burner; and the tubular heat exchanger is connected with a chimney. The hot blast stove is novel and unique in structure and easy to operate, saves fuel, reduces the investment, reduces the temperature and the emission of waste gas, and reduces environmental pollution.
Description
Technical field
The present invention relates to hotblast stove, the air blast of HTHP is provided, or the two preheating top combustion stoves of a kind of no fire grate of required hot blast are provided for the general industry heating in particular for iron-smelting blast furnace.
Background technology
Top combustion stove extensively approved by China's iron industry with its wind-warm syndrome height, reduced investment, problem less, and obtains excellent popularization and use, but in order to reach higher wind-warm syndrome, high yield; Low coke ratio, the effect of low emission, reduction ironmaking cost at present, has adopted various ways to improve wind-warm syndrome; As: improve funnel temperature, realize that coal gas, the two preheatings of air flue, increase air combustion stove add warm air and realize the little hotblast stove of preheating is added in the air secondary preheating; Take air-supply back self waste heat preheating, add high heating value gas, the partial combustion flue gas of combustion chamber is extracted out be transported to interchanger preheating or the like again, still; Because the problem that exists on the structure produce little effect, and also there is complex structure in improved hotblast stove; Conversion is frequent, and valve increases, and investment increases; Many coal gas reduce many drawbacks and defectives such as chamber of hot-blast stove self temperature, thus improvement and innovate imperative.
Summary of the invention
To above-mentioned situation, for overcoming the prior art defective, the present invention's purpose just provides the two preheating top combustion stoves of a kind of no fire grate; Can effectively solve the hotblast stove complex structure, conversion is frequent, and valve increases; Investment increases, and many coal gas reduce problems such as chamber of hot-blast stove self temperature.
The technical scheme that the present invention solves is, burner, combustion chamber arranged in the hotblast stove and be filled with the regenerator of heat storage, burner top combuster; There is regenerator the below, is filled by heat storage in the regenerator, makes air-flow unrestricted flow therein; Form uniform high-temperature flue gas stream, hot-blast outlet, combustion-supporting gas entry and combustion air inlet are arranged at hotblast stove top, and exhanst gas outlet is arranged at the bottom; The regenerator bottom has the refractoriness of support heat storage to make greater than 1750 ℃ ceramic in the exhanst gas outlet inboard supporter, exhanst gas outlet is connected through first flue and plate-type heat exchanger, and gas inlet is arranged on the plate-type heat exchanger; Plate-type heat exchanger is connected through combustion air pipeline and combustion air inlet, and the smoke outlet of plate-type heat exchanger is connected through second flue and tubular heat exchanger, and gas entry and gas exit are arranged on the tubular heat exchanger; Gas exit is connected through the combustion-supporting gas entry of gas line and hotblast stove, and combustion-supporting gas entry and combustion air inlet are connected with burner respectively, and tubular heat exchanger is connected through the 3rd flue and chimney; The flue gas common pipe that links to each other with the 3rd flue is arranged on second flue, and the two preheatings of tubular heat exchanger and plate-type heat exchanger make gas preheating arrive safe 180-200 ℃ respectively; Air directly is preheating to 400-500 ℃, and both safety was simple; Energy consumption is narrow-minded again, cost is low reaches wind-warm syndrome 1300-1350 ℃ high wind-warm syndrome effect; Coal gas, air mixed burning are progressively heated heat storage, and the heat storage high temperature on top moves down, and increases the heat storage capacity of high temperature in heat storage; Improve heat storage capacity and the exchange capability of heat and the utilization ratio of heat storage; Guarantee that heat storage stores more heat of high temperature, the interior temperature of first flue that improves the bottom arrives 600--800 ℃, is transported to plate-type heat exchanger air is carried out preheating.
Novel structure of the present invention is unique, and is simple to operate, fuel saving, saving investment, reduction spent air temp and quantity discharged, minimizing environmental pollution.
Description of drawings
Fig. 1 is a structural front view of the present invention.
Embodiment
Elaborate below in conjunction with the accompanying drawing specific embodiments of the invention.
Provide by Fig. 1, burner 2, combustion chamber 3 are arranged in the hotblast stove 1 of the present invention and be filled with the regenerator of heat storage 5, burner 2 top combusters 3; There is regenerator the below, is filled by heat storage 5 in the regenerator, makes air-flow unrestricted flow therein; Form uniform high-temperature flue gas stream, hot-blast outlet 12, combustion-supporting gas entry 7 and combustion air inlet 6 are arranged at hotblast stove top, and exhanst gas outlet 13 is arranged at the bottom; The regenerator bottom has the refractoriness of support heat storage to make greater than 1750 ℃ ceramic in the exhanst gas outlet inboard supporter 4, exhanst gas outlet 13 is connected with plate-type heat exchanger 8 through first flue 14, and gas inlet 15 is arranged on the plate-type heat exchanger 8; Plate-type heat exchanger is connected through combustion air pipeline 10 and combustion air inlet 6, and the smoke outlet of plate-type heat exchanger is connected through the second flue 14a and tubular heat exchanger 9, and gas entry 16 and gas exit are arranged on the tubular heat exchanger; Gas exit is connected through the combustion-supporting gas entry 7 of gas line 11 and hotblast stove, and combustion-supporting gas entry 7 is connected with burner respectively with combustion air inlet 6, and tubular heat exchanger is connected through the 3rd flue 14b and chimney 17; The flue gas common pipe 18 that links to each other with the 3rd flue 14b is arranged on the second flue 14a, and the two preheatings of tubular heat exchanger and plate-type heat exchanger make gas preheating arrive safe 180-200 ℃ respectively; Air directly is preheating to 400-500 ℃, and both safety was simple; Energy consumption is narrow-minded again, cost is low reaches wind-warm syndrome 1300-1350 ℃ high wind-warm syndrome effect; Coal gas, air mixed burning are progressively heated heat storage, and the heat storage high temperature on top moves down, and increases the heat storage capacity of high temperature in heat storage; Improve heat storage capacity and the exchange capability of heat and the utilization ratio of heat storage; Guarantee that heat storage stores more heat of high temperature, the interior temperature of first flue that improves the bottom arrives 600--800 ℃, is transported to plate-type heat exchanger air is carried out preheating.
Described burner 2 is a pressure-bearing incendiary container cylindraceous; Described hotblast stove 1 is a top combustion stove, present little, in big, big, or big end down down, or go up big, little round shape down.
The present invention is with the original fire grate of refractory materials supporter replacement; Overcome the drawback that the cast iron fire grate is not suitable for hot environment; Draft effect that also can be through exhanst gas outlet moves down the high temperature on top, makes the temperature of first flue bring up to 600-800 ℃; Enter in the plate-type heat exchanger; The combustion air that gets into from gas inlet is heated to 400-500 ℃ through plate-type heat exchanger 8, and the combustion air that is transported to hotblast stove through combustion air pipeline 10 enters the mouth 6, and 300-350 ℃ the flue gas of discharging from the smoke outlet of plate-type heat exchanger carries out preheating through the second flue 14a to the coal gas in the tubular heat exchanger 9; Finally be preheating to 180-200 ℃; Coal gas after the preheating with after hotblast stove gas entry 7 is connected, gets into burner 2 and combustion air the mixings afterfire that is preheating to 400-500 ℃ through gas line 11, and the waste gas of tubular heat exchanger discharge is transported to chimney 17 via the 3rd flue 14b and discharges.
The present invention is the hotblast stove that adopts the two preheatings of no fire grate; Can make gas preheating arrive safe 180-200 ℃ scope; Simultaneously also can air directly be preheating to 400-500 ℃; Both safety, simple, again can be effectively with wind-warm syndrome bring up to present complicated operation, facility investment is big, valve is many, the big high wind-warm syndrome effect that just can reach of air consumption.Aspect in addition; Owing to adopt high smoke-uptake, temperature is separated, the two preheatings of double heat exchanger; Can effectively fume emission not considered the worry that other equipment are burnt out to the TR that needs; The heat storage high temperature that heat storage presents top can move down fully, increases the heat storage capacity of high temperature in heat storage, improves heat storage capacity and the exchange capability of heat and the utilization ratio of heat storage.Guarantee that heat storage stores more heat of high temperature; Principle of work is; Coal gas, air mixed burning are progressively heated the heat storage of checker brick; Improve the temperature in first flue of bottom, the smoke evacuation temperature of first flue is transported to plate-type heat exchanger for 600--800 ℃ air is preheating to 400-500 ℃, the flue gas of again plate-type heat exchanger being got rid of arrives 180-200 ℃ through tubular heat exchanger with gas preheating; Gas delivery after two kinds of preheatings is carried out mixed firing to burner, realize that wind pushing temperature can reach 1300-1350 ℃.
The present invention is through utilizing double heat exchanger to high funnel temperature; Respectively coal gas, air are realized two preheatings; Improve hotblast stove heat storage capacity, exchange capability of heat, high wind-warm syndrome air-supply time lengthening, reach energy-conservation, reduction of discharging, high wind-warm syndrome effect, and guaranteed hotblast stove can be efficiently, high temperature, all speed, high-heat strength and safety and stablization ground move; Then realize fuel saving, practice thrift investment, reduce spent air temp and quantity discharged, reduce environmental pollution, good economic benefit and social benefit are arranged.
Claims (3)
1. the two preheating top combustion stoves of a no fire grate have burner (2), combustion chamber (3) and the regenerator that is filled with heat storage (5), combuster (3) above the burner (2) in the hotblast stove (1); There is regenerator the below, is filled by heat storage (5) in the regenerator, makes air-flow unrestricted flow therein; Form uniform high-temperature flue gas stream, hot-blast outlet (12), combustion-supporting gas entry (7) and combustion air inlet (6) are arranged at hotblast stove top, and exhanst gas outlet (13) is arranged at the bottom; It is characterized in that, the regenerator bottom has the refractoriness of support heat storage to make greater than 1750 ℃ ceramic in the exhanst gas outlet inboard supporter (4), exhanst gas outlet (13) is connected through first flue (14) and plate-type heat exchanger (8); Gas inlet (15) is arranged on the plate-type heat exchanger (8), and plate-type heat exchanger is connected through combustion air pipeline (10) and combustion air inlet (6), and the smoke outlet of plate-type heat exchanger is connected through second flue (14a) and tubular heat exchanger (9); Gas entry (16) and gas exit are arranged on the tubular heat exchanger; Gas exit is connected through the combustion-supporting gas entry (7) of gas line (11) and hotblast stove, and combustion-supporting gas entry (7) and combustion air inlet (6) are connected with burner respectively, and tubular heat exchanger is connected through the 3rd flue (14b) and chimney (17); The flue gas common pipe (18) that links to each other with the 3rd flue (14b) is arranged on second flue (14a); The two preheatings of tubular heat exchanger and plate-type heat exchanger make gas preheating arrive safe 180-200 ℃ respectively, and air directly is preheating to 400-500 ℃; Both safety; Simply, energy consumption is narrow-minded again, cost is low reaches wind-warm syndrome 1300-1350 ℃ high wind-warm syndrome effect, and coal gas, air mixed burning are progressively heated heat storage; The heat storage high temperature on top moves down; Increase the heat storage capacity of high temperature in heat storage, improve heat storage capacity and the exchange capability of heat and the utilization ratio of heat storage, guarantee that heat storage stores more heat of high temperature; The interior temperature of first flue that improves the bottom arrives 600--800 ℃, is transported to plate-type heat exchanger air is carried out preheating.
2. the top combustion stove that has the high low temperature flue double-preheating system of layering according to claim 1 is characterized in that, described burner (2) is a pressure-bearing incendiary container cylindraceous.
3. the top combustion stove that has the high low temperature flue double-preheating system of layering according to claim 1; It is characterized in that described hotblast stove (1) is a top combustion stove, present little, in big, big down; Or big end down, or go up big, following little round shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101158899A CN102618681A (en) | 2012-04-19 | 2012-04-19 | Grate-free double-preheating top combustion type hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101158899A CN102618681A (en) | 2012-04-19 | 2012-04-19 | Grate-free double-preheating top combustion type hot blast stove |
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| Publication Number | Publication Date |
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| CN102618681A true CN102618681A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101158899A Pending CN102618681A (en) | 2012-04-19 | 2012-04-19 | Grate-free double-preheating top combustion type hot blast stove |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925608A (en) * | 2012-11-26 | 2013-02-13 | 河南省豫兴热风炉工程技术有限公司 | High-air temperature hot-air furnace with high-temperature flue and high-temperature smoke gas current equalizer |
| CN104073582A (en) * | 2014-06-18 | 2014-10-01 | 鞍钢集团工程技术有限公司 | Full-refractory structure-supported checker brick furnace body construction and construction technology method |
| CN106967861A (en) * | 2017-05-26 | 2017-07-21 | 中冶京诚工程技术有限公司 | Time-sharing preheating system for combustion air of hot blast stove |
| CN107131498A (en) * | 2017-05-24 | 2017-09-05 | 郑州釜鼎热能技术有限公司 | It is a kind of to reduce the gas combustion heating furnace of nitrogen oxides and organic volatile discharge |
| CN107246816A (en) * | 2017-07-31 | 2017-10-13 | 无锡太阳山新能源科技有限公司 | A kind of highly effective air energy recover |
| CN113061717A (en) * | 2021-03-29 | 2021-07-02 | 北京卡卢金热风炉技术有限公司 | A roasting system and method for producing oxidized pellets |
| CN113136471A (en) * | 2021-03-30 | 2021-07-20 | 北京卡卢金热风炉技术有限公司 | High-temperature-resistant grate, hot blast stove system and method for heating medium-temperature air |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355323A (en) * | 2001-11-30 | 2002-06-26 | 承德市鸿博科贸有限公司 | Equipment and method for preheating gas and combustion-promoting air of blast furnace |
| CN2635677Y (en) * | 2003-06-20 | 2004-08-25 | 北京金信合达能源科技有限公司 | Air and gas double-preheating hot-blast stove |
| CN1528918A (en) * | 2003-10-21 | 2004-09-15 | 北京科技大学 | A device for increasing the temperature of blast furnace hot blast stove |
-
2012
- 2012-04-19 CN CN2012101158899A patent/CN102618681A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355323A (en) * | 2001-11-30 | 2002-06-26 | 承德市鸿博科贸有限公司 | Equipment and method for preheating gas and combustion-promoting air of blast furnace |
| CN2635677Y (en) * | 2003-06-20 | 2004-08-25 | 北京金信合达能源科技有限公司 | Air and gas double-preheating hot-blast stove |
| CN1528918A (en) * | 2003-10-21 | 2004-09-15 | 北京科技大学 | A device for increasing the temperature of blast furnace hot blast stove |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925608A (en) * | 2012-11-26 | 2013-02-13 | 河南省豫兴热风炉工程技术有限公司 | High-air temperature hot-air furnace with high-temperature flue and high-temperature smoke gas current equalizer |
| CN104073582A (en) * | 2014-06-18 | 2014-10-01 | 鞍钢集团工程技术有限公司 | Full-refractory structure-supported checker brick furnace body construction and construction technology method |
| CN104073582B (en) * | 2014-06-18 | 2016-02-03 | 鞍钢集团工程技术有限公司 | Complete resistance to equipment structure supports checker brick furnace binding and brick-building art method |
| CN107131498A (en) * | 2017-05-24 | 2017-09-05 | 郑州釜鼎热能技术有限公司 | It is a kind of to reduce the gas combustion heating furnace of nitrogen oxides and organic volatile discharge |
| CN107131498B (en) * | 2017-05-24 | 2018-12-25 | 郑州釜鼎热能技术有限公司 | A kind of gas combustion heating furnace reducing nitrogen oxides and organic volatile discharge |
| CN106967861A (en) * | 2017-05-26 | 2017-07-21 | 中冶京诚工程技术有限公司 | Time-sharing preheating system for combustion air of hot blast stove |
| CN107246816A (en) * | 2017-07-31 | 2017-10-13 | 无锡太阳山新能源科技有限公司 | A kind of highly effective air energy recover |
| CN107246816B (en) * | 2017-07-31 | 2023-08-08 | 无锡太阳山新能源科技有限公司 | High-efficiency air energy recoverer |
| CN113061717A (en) * | 2021-03-29 | 2021-07-02 | 北京卡卢金热风炉技术有限公司 | A roasting system and method for producing oxidized pellets |
| CN113136471A (en) * | 2021-03-30 | 2021-07-20 | 北京卡卢金热风炉技术有限公司 | High-temperature-resistant grate, hot blast stove system and method for heating medium-temperature air |
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Application publication date: 20120801 |