CN203704686U - Off-gas sensible heat recovery device for metallurgical off-gas acid making device - Google Patents
Off-gas sensible heat recovery device for metallurgical off-gas acid making device Download PDFInfo
- Publication number
- CN203704686U CN203704686U CN201420036668.7U CN201420036668U CN203704686U CN 203704686 U CN203704686 U CN 203704686U CN 201420036668 U CN201420036668 U CN 201420036668U CN 203704686 U CN203704686 U CN 203704686U
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- CN
- China
- Prior art keywords
- gas
- steam
- metallurgical
- heat
- water
- 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
- 239000002253 acid Substances 0.000 title abstract description 8
- 238000011084 recovery Methods 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000000779 smoke Substances 0.000 claims description 9
- 238000006392 deoxygenation reaction Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 14
- 239000003546 flue gas Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 12
- 230000004087 circulation Effects 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a off-gas sensible heat recovery device for a metallurgical off-gas acid making device. The off-gas sensible heat recovery device for the metallurgical off-gas acid making device comprises a heat exchanger which is arranged in the middle of a off-gas pipeline, the water pipe outlet end of the heat exchanger is connected with the inlet end of the heat exchanger through a steam generator and a water supply preheater in sequence, the water inlet end of the water supply preheater is connected with a deoxygenated water pump, the water outlet end of the water supply preheater is connected with the water inlet end of the steam generator, and the steam outlet end of the steam generator is connected with a steam pipe system. According to the off-gas sensible heat recovery device for the metallurgical off-gas acid making device, heat exchange is conducted on the off-gas heat of the metallurgical off-gas acid making device through the phase-change heat exchanger, sensible heat of the off-gas is recovered, low-pressure steam is generated to be used by the steam pipe system, the use cost and the maintenance cost of equipment are reduced, the purposes of saving energy and reducing consumption are achieved, and economic benefits are increased.
Description
Technical field
The utility model relates to a kind of heat recovery technical field, relates in particular to a kind of obvious heat of smoke retracting device for metallurgical off-gas acid-making device.
Background technology
China's metallurgical off-gas acid-making industry is accompanied by the growth of colored metallurgical industrial and develops rapidly, and its output is the gesture of increase year after year.In Acid Making Process by Smelting fume, produce a large amount of used heat, owing to containing sulfuric acid vapor in used heat, can cause because its wall temperature is too low the stifled phenomenon of acid dew burn into ash to common metal preheater, and cause the damage of equipment and scrap, increased production cost.For fear of the generation of this kind of phenomenon, producer, to sacrifice boiler thermal output as cost, alleviates acid dew corrosion phenomenon by improving exhaust gas temperature, thereby has caused the waste of a large amount of middle low-temperature heat sources mostly.But this high-temperature flue gas can bring obstacle to the efficiency of dust collection of follow-up workshop section simultaneously, improve its washing energy consumption.
Average retrieval of sulfuric acid steam 0.935t per ton according to statistics, used heat utilization rate is only 60%-70%, the used heat utilization rate of metallurgical off-gas acid-making industry is lower.Chinese large-sized smelting enterprise mainly reclaims high potential temperature used heat, and it is less that centering potential temperature used heat is recycled, and the small-sized smelting enterprise of part also do not reclaim for the even high potential temperature used heat of reducing investment outlay, thereby has caused serious energy waste.
Utility model content
The utility model will solve above-mentioned deficiency exactly, and a kind of obvious heat of smoke retracting device for metallurgical off-gas acid-making device is provided, and the middle potential temperature used heat of metallurgical off-gas acid-making is recycled, and reaches the reasonable utilization of the energy, and produces economic benefit.
In order to achieve the above object, the utility model provides a kind of obvious heat of smoke retracting device for metallurgical off-gas acid-making device, comprise and be located at the middle heat exchanger of flue, the pipe outlet end of described heat exchanger is connected with its entrance point by steam generator, feed water preheater successively; The water inlet end of described feed water preheater is connected with deoxygenation water pump, its water side is connected with the water inlet end of described steam generator; The steam output end of described steam generator is connected with steam pipe system.
Further, described heat exchanger is phase-change heat-exchanger.
Further, between described heat exchanger and steam generator, be provided with the control valve for regulating flue outlet temperature.
High-temperature flue gas passes through phase-change heat-exchanger, after in the water pipe of phase-change heat-exchanger, water absorbs the heat energy in flue gas, intensification is vaporized, be delivered in steam generator and carry out heat exchange again with the deaerated water of preheating after feed water preheater carries out heat exchange through its port of export, and become steam water interface, deaerated water becomes low-pressure steam after inhaling steam heat, is used for heating or heat supply from the steam output end input steam pipe system of steam generator; Steam water interface in steam generator enters feed water preheater along pipeline, carries out entering after heat exchange in phase-change heat-exchanger, absorbing flue gas heat and vaporizing again, thereby complete once circulation with the deaerated water of the normal temperature state in it.
This device has been realized absorbing of low temperature in flue gas by two circulations, one is flue gas heat exchange circulation, be that high-temperature flue gas turns to steam in the water pipe of phase-change heat-exchanger after steam, entering heat exchange in steam generator becomes steam water interface, then enters feed water preheater and carry out after heat exchange carrying out next round circulation for water at low temperature enters in the water pipe of phase-change heat-exchanger again; Another is deaerated water vaporization circulation, and deaerated water enters feed water preheater through deoxygenation water pump and carries out entering steam generator after heat exchange preheating, and the heat energy of absorption cycle steam, produces low-pressure steam, is delivered to low-pressure steam pipe network for user.
The beneficial effects of the utility model are embodied in:
1, the utility model adopts phase-change heat-exchanger to carry out heat exchange to the flue gas heat of metallurgical off-gas acid-making device, and the sensible heat of recovered flue gas also produces low-pressure steam for steam pipe system, has saved the energy, increases Business Economic Benefit.
2, because phase-change heat-exchanger wall temperature has performance-adjustable, thereby make it adapt to the variation of flue gas heat transfer load, exhaust gas temperature and wall surface temperature are kept relative stability, fundamentally avoided the stifled phenomenon of sour dew burn into ash, significantly reduce the O&M cost of equipment.
3, this device has reduced the exhaust gas temperature of flue, thereby can improve the efficiency of dust collection of follow-up workshop section, and reduces temperature of washing water, reduces energy consumption.
4, this device adopts Natural Circulation, and selecting water is medium, after absorption smoke heat energy, becomes mutually cyclic steam, then release heat, produces steam with deaerated water heat exchange, has reduced operating cost.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the utility model structural representation;
In figure: 1-flue, 2-phase-change heat-exchanger, 3-deoxygenation water pump, 4-feed water preheater, 5-steam generator, 6-control valve.
Detailed description of the invention
As shown in Figure 1, a kind of obvious heat of smoke retracting device for metallurgical off-gas acid-making device, comprise and be located at the middle phase-change heat-exchanger 2 of flue 1, the pipe outlet end of described phase-change heat-exchanger 2 has been connected to form flue gas heat exchange circulation by steam generator 5, feed water preheater 4 with its entrance point successively; High-temperature flue gas turns to steam in the water pipe of phase-change heat-exchanger 2 after steam, and entering heat exchange in steam generator 5 becomes steam water interface, then enters feed water preheater 4 and carry out after heat exchange carrying out next round circulation for water at low temperature enters in the water pipe of phase-change heat-exchanger 2 again; Thereby high-temperature flue-gas in flue 1 is entered to follow-up dust arrester after being down to 180 DEG C.
The water inlet end of feed water preheater 4 is connected with deoxygenation water pump 3, its water side is connected with the water inlet end of steam generator 5, the steam output end of steam generator 5 and steam pipe system are connected to form deaerated water vaporization circulation, be that deaerated water enters after feed water preheater 4 carries out heat exchange preheating and enters steam generator 5 through deoxygenation water pump 3, after the heat energy of absorption cycle steam, produce low-pressure steam, be delivered to low-pressure steam pipe network for user.
Further, be provided with the control valve 6 for regulating flue outlet temperature between described phase-change heat-exchanger 2 and steam generator 5, control to adjust the size of valve 6 according to the temperature of flue gas, the low-pressure steam that makes to be conveyed in steam pipe system corresponds to actual needs.
Above embodiment is not limited only to protection domain of the present utility model, all modify based on basic thought of the present utility model or change all belong to protection domain of the present utility model.
Claims (3)
1. for an obvious heat of smoke retracting device for metallurgical off-gas acid-making device, it is characterized in that: comprise and be located at the middle heat exchanger of flue, the pipe outlet end of described heat exchanger is connected with its entrance point by steam generator, feed water preheater successively; The water inlet end of described feed water preheater is connected with deoxygenation water pump, its water side is connected with the water inlet end of described steam generator; The steam output end of described steam generator is connected with steam pipe system.
2. the obvious heat of smoke retracting device for metallurgical off-gas acid-making device according to claim 1, is characterized in that: described heat exchanger is phase-change heat-exchanger.
3. the obvious heat of smoke retracting device for metallurgical off-gas acid-making device according to claim 1 and 2, is characterized in that: between described heat exchanger and steam generator, be provided with the control valve for regulating flue outlet temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036668.7U CN203704686U (en) | 2014-01-21 | 2014-01-21 | Off-gas sensible heat recovery device for metallurgical off-gas acid making device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036668.7U CN203704686U (en) | 2014-01-21 | 2014-01-21 | Off-gas sensible heat recovery device for metallurgical off-gas acid making device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203704686U true CN203704686U (en) | 2014-07-09 |
Family
ID=51055110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420036668.7U Expired - Lifetime CN203704686U (en) | 2014-01-21 | 2014-01-21 | Off-gas sensible heat recovery device for metallurgical off-gas acid making device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203704686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091613A (en) * | 2014-12-02 | 2015-11-25 | 芜湖三峰节能设备有限公司 | Flue gas sensible heat recovery device used for smelting flue gas acid-making device |
-
2014
- 2014-01-21 CN CN201420036668.7U patent/CN203704686U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091613A (en) * | 2014-12-02 | 2015-11-25 | 芜湖三峰节能设备有限公司 | Flue gas sensible heat recovery device used for smelting flue gas acid-making device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 230000 D monomer 2D6 room, workshop D-6D-11, science and Technology Industrial Park, 168 camphor Road, hi tech Zone, Anhui, Hefei Patentee after: ANHUI RESOURCE SAVING & ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: Bao road in Yaohai District of Hefei city in Anhui province 230000 No. 1 Yaohai city science and Technology Industrial Park Patentee before: ANHUI SECTION SOURCE OF ENERGY-SAVING TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |