CN203810442U - Flue gas waste-heat utilization device for blast furnace gas boiler - Google Patents
Flue gas waste-heat utilization device for blast furnace gas boiler Download PDFInfo
- Publication number
- CN203810442U CN203810442U CN201420101882.6U CN201420101882U CN203810442U CN 203810442 U CN203810442 U CN 203810442U CN 201420101882 U CN201420101882 U CN 201420101882U CN 203810442 U CN203810442 U CN 203810442U
- Authority
- CN
- China
- Prior art keywords
- heat
- flue gas
- blast furnace
- boiler
- utilization device
- 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.)
- Expired - Lifetime
Links
- 239000007789 gas Substances 0.000 title claims abstract description 46
- 239000003546 flue gas Substances 0.000 title claims abstract description 44
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000002918 waste heat Substances 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Abstract
The utility model relates to a flue gas waste-heat utilization device for a blast furnace gas boiler. The flue gas waste-heat utilization device is used for the gas boiler. The upper end of the gas boiler is provided with a flue gas vent used for letting off flue gas. The flue gas waste-heat utilization device comprises a chimney, an air intake and a heat exchange device. The heat exchange device comprises a heat absorbing device and a heat discharging device which are communicated through a pipeline and filled with heat transfer medium. The flue gas vent, the heat absorbing device and the chimney are sequentially connected, the air intake is connected with the heat discharging device, and the heat discharging device is communicated with the lower end of the gas boiler. The flue gas waste-heat utilization device has the advantages that the flue gas waste-heat utilization device is simple in structure, waste heat of flue gas discharged from the gas boiler of a blast furnace or a converter can be sufficiently utilized, boiler efficiency is improved and environmental protection is facilitated.
Description
Technical field
The utility model relates to a kind of flue gas waste heat recovery apparatus, especially relates to a kind of flue gas waste heat utilization device of blast furnace gas boiler, belongs to field of iron and steel smelting.
Background technology
Along with the attention of country to using energy source, improve the utilization rate of the energy, reducing energy loss is national development direction, can also improve the economic benefit of enterprise simultaneously.What commonly use for China's steel industry is the gas boiler of blast furnace and converter, i.e. coal gas hot-blast stove, also will pay attention to the problem of utilizing for the energy.
The gas boiler of blast furnace ironmaking in producing produces a large amount of flue gases, and the delivery temperature of blast furnace gas boiler is higher, more than reaching 120 degree, and the flue gas dew point temperature of blast furnace gas lower (vapour content is less, substantially not sulfur-bearing), conventionally below 65 degree.Existing treatment system has can be to the defect such as environment, the wasting of resources, if the high temperature that the gas boiler of blast furnace produces is without processing the waste that can cause resource with regard to row outside direct; If the outer row of high-temperature flue gas also can cause thermal pollution to environment.Due to the needs of energy-conserving and environment-protective, need a kind of residual heat using device, under the prerequisite making full use of at the fume afterheat of discharge, ensure the high efficiency production of gas boiler system.
Existing for flue gas heat recovery device, structure is more complicated, and after waste heat recovery, is used among other produce, and efficiency that cannot the boiler of lifting own is not obvious for the cooling effect of flue gas.
Utility model content
Technical problem to be solved in the utility model is; overcome the shortcoming of prior art; a kind of flue gas waste heat utilization device of blast furnace gas boiler is provided, have advantages of gas boiler institute smoke discharging simple in structure, can to make full use of blast furnace or converter waste heat, improve boiler efficiency and be conducive to environmental protection.
In order to solve above technical problem, the utility model provides a kind of flue gas waste heat utilization device of blast furnace gas boiler, be used in gas boiler, gas boiler upper end is provided with the exhaust opening of discharge flue gas, flue gas waste heat utilization device comprises chimney, air inlet, heat-exchanger rig, heat-exchanger rig comprises heat sink and heat-releasing device, between heat sink and heat-releasing device by pipeline communication and be full of heat transfer medium; Exhaust opening, heat sink and chimney are connected successively, and air inlet connects heat-releasing device, and heat-releasing device is communicated with the lower end of gas boiler.
The technical scheme that the utility model further limits is: between aforementioned heat sink and aforementioned exhaust opening, air-introduced machine is installed.
Between aforementioned heat-releasing device and aforementioned air inlet, air blast is installed.
On aforementioned pipeline, water circulating pump is installed.
Aforementioned pipeline is I-shaped structure.
Further, aforementioned heat transfer medium is water.
The beneficial effects of the utility model are:
The utility model, by the indirect heat exchange of heat sink, heat-releasing device composition, is used for heating combustion air by the waste heat of flue gas, can significantly reduce the flue gas loss of boiler.Conventionally flue-gas temperature can be down to below 80 degree.Before cooling, exhaust gas temperature is approximately 120 degree, is approximately 80 degree by the exhaust gas temperature after the flue gas waste heat utilization device of dress blast furnace gas boiler, and the utility model can improve boiler thermal output to be about more than 3%.
The utility model utilizes water as medium, by heat-exchanger rig, reclaims the high-temperature flue gas heat of arranging of blast furnace gas boiler, can heat the heat-exchange system for the combustion air of boiler combustion, to reusing of energy source.
In sum, the utlity model has gas boiler institute smoke discharging simple in structure, can to make full use of blast furnace or converter waste heat, improve boiler efficiency and be conducive to the advantage of environmental protection.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present utility model.
Reference numeral: 1-gas boiler, 2-exhaust opening, 3-air-introduced machine, 4-heat sink, 5-chimney, 6-air inlet, 7-air blast, 8-pipeline, 9-heat-releasing device, 10-water circulating pump.
Detailed description of the invention
embodiment 1
The flue gas waste heat utilization device of a kind of blast furnace gas boiler that the present embodiment provides, structure as shown in Figure 1, this flue gas waste heat utilization device is used in gas boiler 1, gas boiler 1 upper end is provided with the exhaust opening 2 of discharge flue gas, flue gas waste heat utilization device comprises chimney 5, air inlet 6, heat-exchanger rig, heat-exchanger rig comprises heat sink 4 and heat-releasing device 9, is communicated with and is full of heat transfer medium between heat-releasing device 9 and heat sink 4 by pipeline 8, and heat transfer medium is water.Pipeline 8 is I-shaped structure, and water circulating pump 10 is installed on pipeline 8, promotes the heat transfer medium flows in pipeline 8.Exhaust opening 2, heat sink 4 and chimney 5 are connected successively, between heat sink 4 and exhaust opening 2, air-introduced machine 3 are installed, and help exhaust opening 2 to discharge high-temperature flue gas.Air inlet 6 connects heat-releasing device 9, between heat-releasing device 9 and air inlet 6, air blast 7 is installed, and helps air inlet 6 to pass into gas.Heat-releasing device 9 is communicated with the lower end of gas boiler 1.
Heat sink 4 carries out exchange heat for the high-temperature flue gas of discharging with exhaust opening 2 makes cooling high-temperature fume, heat after exchange heat passes to the heat transfer medium in pipeline 8, heat transfer medium in pipeline 8 transfers heat to heat-releasing device 9, and heat-releasing device 9 is for carrying out exchange heat also to gas heating with the gas entering from air inlet 6.
The operation principle of this residual heat using device is: the high-temperature flue gas in blast furnace gas boiler 1 is drawn through air-introduced machine 3, high-temperature flue gas is through heat sink 4 release heat, the flue gas reducing after temperature is discharged by chimney 5, water absorbs heat by heat sink 4, improve water temperature, by starting water circulating pump 10, water is moved between heat sink 4 and heat-releasing device 9, air blast 7 blasts air in gas boiler 1, air absorbs heat and heats up through heat-releasing device 9, thereby raising gas temperature, the air after heating enters gas boiler 1.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. the flue gas waste heat utilization device of a blast furnace gas boiler, be used in gas boiler, described gas boiler upper end is provided with the exhaust opening of discharge flue gas, it is characterized in that: described flue gas waste heat utilization device comprises chimney, air inlet, heat-exchanger rig, described heat-exchanger rig comprises heat sink and heat-releasing device, between described heat sink and described heat-releasing device by pipeline communication and be full of heat transfer medium; Described exhaust opening, heat sink and chimney are connected successively, and described air inlet connects heat-releasing device, and described heat-releasing device is communicated with the lower end of described gas boiler.
2. according to the flue gas waste heat utilization device of the blast furnace gas boiler described in claim 1, it is characterized in that: between described heat sink and described exhaust opening, air-introduced machine is installed.
3. according to the flue gas waste heat utilization device of the blast furnace gas boiler described in claim 1, it is characterized in that: between described heat-releasing device and described air inlet, air blast is installed.
4. according to the flue gas waste heat utilization device of the blast furnace gas boiler described in claim 1, it is characterized in that: on described pipeline, water circulating pump is installed.
5. according to the flue gas waste heat utilization device of the blast furnace gas boiler described in claim 1, it is characterized in that: described pipeline is I-shaped structure.
6. according to the flue gas waste heat utilization device of the blast furnace gas boiler described in claim 1, it is characterized in that: described heat transfer medium is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101882.6U CN203810442U (en) | 2014-03-07 | 2014-03-07 | Flue gas waste-heat utilization device for blast furnace gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101882.6U CN203810442U (en) | 2014-03-07 | 2014-03-07 | Flue gas waste-heat utilization device for blast furnace gas boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810442U true CN203810442U (en) | 2014-09-03 |
Family
ID=51449185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420101882.6U Expired - Lifetime CN203810442U (en) | 2014-03-07 | 2014-03-07 | Flue gas waste-heat utilization device for blast furnace gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077285A (en) * | 2022-07-27 | 2022-09-20 | 南通京阳机械科技有限公司 | Energy-saving boiler flue gas waste heat absorption device |
-
2014
- 2014-03-07 CN CN201420101882.6U patent/CN203810442U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077285A (en) * | 2022-07-27 | 2022-09-20 | 南通京阳机械科技有限公司 | Energy-saving boiler flue gas waste heat absorption device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191218 Address after: 210000 No. 188 Ningliu Road, Jiangbei New District, Nanjing City, Jiangsu Province Patentee after: NANJING JINHAN ENVIRONMENTAL TECHNOLOGY CO.,LTD. Address before: Liuhe District of Nanjing City, Jiangsu province 210035 xiejiadian Patentee before: NANJING IRON & STEEL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |