CN205482405U - Flue gas waste heat recovery system - Google Patents
Flue gas waste heat recovery system Download PDFInfo
- Publication number
- CN205482405U CN205482405U CN201620294851.6U CN201620294851U CN205482405U CN 205482405 U CN205482405 U CN 205482405U CN 201620294851 U CN201620294851 U CN 201620294851U CN 205482405 U CN205482405 U CN 205482405U
- Authority
- CN
- China
- Prior art keywords
- flue
- flue gas
- steam generator
- chimney
- heating furnace
- 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 - Fee Related
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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
- 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 relates to a flue gas waste heat recovery system, including establishing stop valve (4) on flue (3) between heating furnace (1) and chimney (2), flue (3) between heating furnace (1) and stop valve (4) link to each other with by -pass flue (5) one end, by -pass flue (5) other end links to each other with the air inlet of steam generator (6), the gas outlet of steam generator (6) links to each other with exhaust piping (7) one end, flue (3) between exhaust piping (7) the other end and stop valve (4) and chimney (2) link to each other and its on be equipped with draught fan (8), the water inlet of steam generator (6) links to each other with inlet channel (10) and goes out the steam ports and links to each other with steam conduit (9), set gradually from the air inlet to the gas outlet into superheat section (11) in steam generator (6), evaporation zone (12), economizer (13) and phase transition heat exchanger (14). It can carry out recycle to the flue gas waste heat, and the heat exchange efficiency of flue gas is high.
Description
Technical field
This utility model belongs to technical field of environment protection equipment, relates to a kind of residual neat recovering system, especially
It relates to a kind of flue gas waste heat recovery system.
Background technology
In the heating furnace that steel pipe's production enterprise uses, great majority are all to be produced by burning blast furnace gas
Heat amount, is used for heating steel billet.The high-temperature flue gas that heating furnace produces only passes through tentatively often
(such as air preheater) is utilized just directly idle discharge to be put, exhaust temperature still up to four or five hundred degree.
Such that cause the waste of the energy, again surrounding enviroment are caused certain impact.
For this reason, it may be necessary to waste heat of flue gas of heating furnace is recycled.But, there is presently no
It is specifically designed to the device that waste heat of flue gas of heating furnace recycles.Even if it addition, having for heating furnace
The device of flue gas heat recovery, its heat exchanger effectiveness also ratio is relatively low so that flue gas a large amount of
Heat is wasted.
In view of the above-mentioned technological deficiency of prior art, in the urgent need to developing a kind of novel heating furnace
Flue gas heat recovery device.
Summary of the invention
The purpose of this utility model is to overcome shortcoming present in prior art, it is provided that Yi Zhongyan
Gas residual neat recovering system, fume afterheat can be recycled by it, has i.e. saved the energy,
Being avoided that again the impact on surrounding, meanwhile, its heat exchanger effectiveness is high.
To achieve these goals, this utility model provides following technical scheme: more than a kind of flue gas
Heat recovery system, it includes the stop valve on the flue that is arranged between heating furnace and chimney, its
Feature is, the flue between described heating furnace and stop valve is connected with one end of bypass flue, institute
The air inlet of the other end and steam generator of stating bypass flue is connected in order to by described heating furnace
High-temperature flue gas be input in described steam generator, the gas outlet of described steam generator is with useless
One end of feed channel is connected, between the other end and described stop valve and the chimney of described exhaust piping
Flue be connected and be provided with air-introduced machine on described exhaust piping with will be from described steam generator
Flue gas out is discharged to described chimney, and the water inlet of described steam generator is connected with inlet channel
And the venthole of described steam generator is connected with jet chimney, from institute in described steam generator
State air inlet to set gradually as superheat section, evaporator section, economizer and phase inversion to described gas outlet
Hot device.
Further, wherein, described jet chimney is connected with user side.
Flue gas waste heat recovery system of the present utility model has a following Advantageous Effects:
1, fume afterheat can be recycled by it, has i.e. saved the energy, has been avoided that again
The high-temperature flue gas impact on surrounding.
2, the steam generator of its special construction used makes the heat exchange efficiency height of flue gas,
So that fume afterheat can be fully used.
3, it is provided with air-introduced machine, it can be ensured that flue gas is discharged from steam generator smoothly.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of flue gas waste heat recovery system of the present utility model.
Detailed description of the invention
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings, the content of embodiment
Not as the restriction to protection domain of the present utility model.
Fig. 1 shows the composition schematic diagram of flue gas waste heat recovery system of the present utility model.Such as Fig. 1
Shown in, flue gas waste heat recovery system of the present utility model includes being arranged on heating furnace 1 and chimney 2
Between flue 3 on stop valve 4.The existence of described stop valve 4 makes the height of described heating furnace 1
Temperature flue gas can not be delivered directly to described chimney 2 by described flue 3.
Meanwhile, one end phase of the flue 3 between described heating furnace 1 and stop valve 4 and bypass flue 5
Even.The other end of described bypass flue 5 is connected with the air inlet of steam generator 6.So, logical
Cross described bypass flue 5, it is possible to the high-temperature flue gas of described heating furnace 1 is input to described steam and sends out
In raw device 6.
The gas outlet of described steam generator 6 is connected with one end of exhaust piping 7.Described flue gas leading
Flue 3 between the other end in road 7 with described stop valve 4 and chimney 2 is connected.So, described
Steam generator 6 carries out the high-temperature flue gas after heat exchange after cooling, it is possible to by described useless
Feed channel 7 is discharged to described chimney 2, then is discharged by described chimney 2.Meanwhile, new in this practicality
In type, described exhaust piping 7 is provided with air-introduced machine 8.The existence of described air-introduced machine 8 makes fall
Flue gas after temperature is easier to from described steam generator 6 discharge.
The water inlet of described steam generator 6 is connected with inlet channel 10, by described water inlet pipe
Cold water (such as, the demineralized water of 20 DEG C) is input in described steam generator 6 by road 10.Institute
The venthole stating steam generator 6 is connected with jet chimney 9, is discharged by described jet chimney 9
The superheated steam with uniform temperature and pressure produced.
In this utility model, give vent to anger to described from described air inlet in described steam generator 6
Mouth sets gradually as superheat section 11, evaporator section 12, economizer 13 and phase-change heat-exchanger 14.Wherein,
Described superheat section 11 can be by the temperature of the high-temperature flue gas from the air inlet entrance of described steam generator 6
Degree is reduced to about 445 DEG C from about 495 DEG C.Described evaporator section 12 can be further by high-temperature flue gas
It is reduced to about 228 DEG C from about 445 DEG C.The heat reclaimed during this is for by described economizer
The demineralized water of about 190 DEG C of 13 outlets is heated into 1.6MPa, the superheated steam of about 350 DEG C.
Meanwhile, the temperature of flue gas can be reduced to about 193 DEG C from about 228 DEG C by described economizer 13.
The heat reclaimed during this is for the desalination of exported by described phase-change heat-exchanger 14 about 120 DEG C
Water is heated to about 190 DEG C.The lowermost wall surface temperature of described phase-change heat-exchanger 14 is set in 130 DEG C
Left and right (higher than flue gas acid dew point), for being reduced to 145 DEG C by the temperature of flue gas from about 193 DEG C
Left and right, the heat reclaimed during this is for being heated to about 120 DEG C by the demineralized water of about 20 DEG C
The described economizer of rear entrance 13.The final stage of this steam generator 6 arranges phase-change heat-exchanger 14.
Flue gas exit temperature can be dropped further by described phase-change heat-exchanger 14 by phase-change heat-exchange technology
Low, ensureing to realize while exhaust gas temperature is more than acid dew point the maximum absorption of fume afterheat
Utilize.
Described jet chimney 9 is connected with user side, for will produce 1.6Mpa, about 350 DEG C
Superheated steam be transported to user side.Described user side can be steam turbine, to generate electricity,
It can also be the radiator etc. of heating.
Fume afterheat can be recycled by the flue gas waste heat recovery system of the present invention, i.e. saves
The about energy, is avoided that again the high-temperature flue gas impact on surrounding.Meanwhile, special construction
Steam generator can obtain high heat exchanger effectiveness, thus makes full use of the waste heat of flue gas.
Above-described embodiment of the present utility model is only to be made by clearly demonstrating this utility model
Citing, and be not the restriction to embodiment of the present utility model.For art
For those of ordinary skill, other multi-form can also be made on the basis of the above description
Change or variation.Here cannot all of embodiment be given exhaustive.Every belong to this practicality
Obvious change or variation that novel technical scheme is extended out are new still in this practicality
The row of the protection domain of type.
Claims (2)
1. a flue gas waste heat recovery system, it include being arranged on heating furnace (1) and chimney (2) it
Between flue (3) on stop valve (4), it is characterized in that, described heating furnace (1) and cut
Only the flue (3) between valve (4) is connected with one end of bypass flue (5), described side
The other end of road flue (5) is connected in order to by described with the air inlet of steam generator (6)
The high-temperature flue gas of heating furnace (1) is input in described steam generator (6), described steam
The gas outlet of generator (6) is connected with one end of exhaust piping (7), described exhaust piping
(7) flue (3) phase between the other end with described stop valve (4) and chimney (2)
Even and it is provided with air-introduced machine (8) on described exhaust piping (7) with will be from described steam generation
Device (6) flue gas out is discharged to described chimney (2), entering of described steam generator (6)
The mouth of a river is connected with inlet channel (10) and the venthole of described steam generator (6) and steaming
Steam pipe road (9) is connected, in described steam generator (6) from described air inlet to described go out
QI KOU sets gradually as superheat section (11), evaporator section (12), economizer (13) and phase transformation
Heat exchanger (14).
Flue gas waste heat recovery system the most according to claim 1, is characterized in that, described steam pipe
Road (9) is connected with user side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620294851.6U CN205482405U (en) | 2016-04-08 | 2016-04-08 | Flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620294851.6U CN205482405U (en) | 2016-04-08 | 2016-04-08 | Flue gas waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205482405U true CN205482405U (en) | 2016-08-17 |
Family
ID=56644999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620294851.6U Expired - Fee Related CN205482405U (en) | 2016-04-08 | 2016-04-08 | Flue gas waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205482405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692592A (en) * | 2018-05-17 | 2018-10-23 | 上海电力学院 | Using the tube-plate type heat-exchanger of foam copper product |
| CN109135780A (en) * | 2018-10-27 | 2019-01-04 | 刘春姣 | It is a kind of to utilize normal pressure overheat steam charing, cracking apparatus |
-
2016
- 2016-04-08 CN CN201620294851.6U patent/CN205482405U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692592A (en) * | 2018-05-17 | 2018-10-23 | 上海电力学院 | Using the tube-plate type heat-exchanger of foam copper product |
| CN109135780A (en) * | 2018-10-27 | 2019-01-04 | 刘春姣 | It is a kind of to utilize normal pressure overheat steam charing, cracking apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |