CN106482532A - High-temperature flue gas cooling heat exchanger - Google Patents
High-temperature flue gas cooling heat exchanger Download PDFInfo
- Publication number
- CN106482532A CN106482532A CN201611056876.3A CN201611056876A CN106482532A CN 106482532 A CN106482532 A CN 106482532A CN 201611056876 A CN201611056876 A CN 201611056876A CN 106482532 A CN106482532 A CN 106482532A
- Authority
- CN
- China
- Prior art keywords
- gas
- preheater
- air
- air preheater
- temperature flue
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
Abstract
The present invention relates to a kind of high-temperature flue gas cooling heat exchanger, it includes frame（1）, described frame（1）Side is provided with former and later two air preheaters（2）, described frame（1）Opposite side is provided with a gas preheater（3）, the air preheater of rear side（2）The first exhanst gas outlet（22）Air preheater with front side（2）The first gas approach（21）Between pass through the first exhaust gases passes（4）It is connected, the air preheater of front side（2）With gas preheater（3）It is connected, the air preheater of front side（2）Air outlet slit（24）Air preheater with rear side（2）Air intlet（23）Between pass through air duct（6）It is connected.A kind of present invention high-temperature flue gas cooling heat exchanger, it can not only carry out recycling to high-temperature flue-gas, and also the gas temperature of low temperature is heated to manufacturing technique requirent, has reached the effect of cooling and energy-conservation.
Description
Technical field
The present invention relates to a kind of high-temperature flue gas cooling heat exchanger, it is mainly used in the industries such as oil refining, petrochemical industry, metallurgy
High-temperature flue gas cool down, and belong to cooling device technical field.
Background technology
Generally 700 ~ 1000 DEG C of non-ferrous metal metallurgy kiln exit gas temperature, before entering kiln tail blower fan and dust arrester installation
Flue-gas temperature must be cooled to 150 ~ 350 DEG C, otherwise will cause the damage of dust collection device.The through type commonly using at present
Gas cooler, its cooling element typically adopts circular tube structure, and during production and application, flue dust easily blocks cooling element, uses
After a period of time, heat transfer effect is poor, and when heat exchange element damages, maintenance is changed also very inconvenient.Application No.
201120167095.8 patent of invention disclose a kind of panel cooler, its cooling unit adopts flat tube configuration, high-temperature flue gas
It is difficult dust stratification through outside flat tube, its heat exchange area is larger, and heat transfer effect is higher, when heat exchange element damages, maintenance is changed also very
Convenient.But because the heat exchange unit of this panel cooler adopts flat tube configuration, therefore its comprcssive strength is low, easily produces and reveal
, there is the potential safety hazard in production, therefore only can be applied to the heat exchange of air and flue gas it is impossible to meet coal gas heat exchange in deformation
Production requirement；In addition high-temperature flue gas its temperature after single panel cooler is still higher, and the heat of flue gas does not obtain fully
Using being expelled directly out can impact to environment.
Content of the invention
The technical problem to be solved is to provide a kind of high-temperature flue gas cooling heat exchanger for above-mentioned prior art,
Two air heat exchangers are connected by it with the high temp. flue of a gas change heater, can not only be to high-temperature flue gas temperature
Degree carries out recycling, and also the gas temperature of low temperature is heated to manufacturing technique requirent, has reached cooling and energy-conservation
Effect.
The present invention the adopted technical scheme that solves the above problems is：A kind of high-temperature flue gas cooling heat exchanger, it includes machine
Frame, described frame side is provided with former and later two air preheaters, and described frame opposite side is provided with a gas preheater, described
Air preheater top is provided with the first gas approach and the first exhanst gas outlet, and before and after described air preheater, both sides are respectively provided with
There are air intlet and air outlet slit, described gas preheater top is provided with the second gas approach and the second exhanst gas outlet, described
Before and after gas preheater, both sides are respectively arranged with gas inlet and gas exit, the first exhanst gas outlet of the air preheater of rear side
It is connected by the first exhaust gases passes and the first gas approach of the air preheater of front side between, the air preheater of front side
Between first exhanst gas outlet and the second gas approach of gas preheater, the second exhaust gases passes are connected, the air preheater of front side
Air outlet slit and the air intlet of the air preheater of rear side between be connected by air duct.
The first upper box that described air preheater includes being sequentially arranged from top to bottom, casing and the first nowel in first
Body, is provided with the first deashing device, is provided with the first heat exchange element in described first raising middle flask body in described first top box body, described
First lower box bottom is provided with the first blanking device.
Described first heat exchange element adopts flat tube configuration.
The second upper box that described gas preheater includes being sequentially arranged from top to bottom, casing and the second nowel in second
Body, is provided with the second deashing device, is provided with the second heat exchange element in described second raising middle flask body in described second top box body, described
Second lower box bottom is provided with the second blanking device.
, in the form of seamless steel pipe, seamless steel pipe rear and front end and card are using no seam welding for described second heat exchange element
Connect.
Described second deashing device includes crossbeam, described crossbeam is lifted with many chains, about the chain link of described chain
Both sides are provided with prickle.
Compared with prior art, it is an advantage of the current invention that：
1st, the high temp. flue of two air heat exchangers and a gas change heater is connected by the present invention, can be by from sky
Air preheater high-temperature flue-gas out carry out recycling, are heated to the gas temperature of low temperature using this partial heat
Manufacturing technique requirent, has reached the purpose of cooling and energy-conservation；
2nd, the heat exchange unit in gas change heater in the present invention adopts seamless steel pipe, and it is connected by seamless welding with card,
High-temperature and high-pressure conditions can be born, solve former flat tube heat exchange unit comprcssive strength low, easy reveal deformation, there is potential safety hazard
Problem is such that it is able to meet the production requirement of coal gas heat exchange；
3rd, in the present invention, the deashing mechanism of gas change heater is reasonable in design, arranges barbed structure on deashing chain, can 360 degree
The dust stratification on pipe is cleared up on ground " no dead angle ", can move back and forth lower shake in deashing mechanism again, thorough cleaning can fall seamless steel
The heat transfer boundary condition of the dust and dirt in pipe outer wall, more conducively heat exchanger, solves the phenomenon of heat exchanger blocking again, and cooling ash-laden gas changes
The thermal efficiency also improves further.
Brief description
Fig. 1 is a kind of structural representation of present invention high-temperature flue gas cooling heat exchanger.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the structural representation of the deashing device of gas change heater in Fig. 1.
Wherein：
Frame 1
Air preheater 2
First gas approach 21
First exhanst gas outlet 22
Air intlet 23
Air outlet slit 24
First deashing device 25
First heat exchange element 26
First blanking device 27
Gas preheater 3
Second gas approach 31
Second exhanst gas outlet 32
Gas inlet 33
Gas exit 34
Second deashing device 35
Crossbeam 351
Chain 352
Prickle 353
Second heat exchange element 36
Second blanking device 37
First exhaust gases passes 4
Second exhaust gases passes 5
Air duct 6.
Specific embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Fig. 1 ~ Fig. 4, one of the present embodiment high-temperature flue gas cooling heat exchanger, it includes frame 1, described frame
1 side is provided with former and later two air preheaters 2, and described frame 1 opposite side is provided with a gas preheater 3, and described air is pre-
Hot device 2 top is provided with the first gas approach 21 and the first exhanst gas outlet 22, and before and after described air preheater 2, both sides are respectively provided with
There are air intlet 23 and air outlet slit 24, described gas preheater 3 top is provided with the second gas approach 31 and the second flue gas goes out
Mouth 32, before and after described gas preheater 3, both sides are respectively arranged with gas inlet 33 and gas exit 34, the air preheater of rear side
It is connected by the first exhaust gases passes 4 between 2 the first exhanst gas outlet 22 and the first gas approach 21 of the air preheater 2 of front side
Logical, the second flue gas between the first exhanst gas outlet 22 of the air preheater 2 of front side and the second gas approach 31 of gas preheater 3
Passage 5 is connected, between the air intlet 23 of the air outlet slit 24 of the air preheater 2 of front side and the air preheater 2 of rear side
It is connected by air duct 6；
The first upper box that described air preheater 2 includes being sequentially arranged from top to bottom, casing and the first lower box, institute in first
State and in the first top box body, be provided with the first deashing device 25, in described first raising middle flask body, be provided with the first heat exchange element 26, described
First lower box bottom is provided with the first blanking device 27；
Described first heat exchange element 26 adopts flat tube configuration；
The second upper box that described gas preheater 3 includes being sequentially arranged from top to bottom, casing and the second lower box, institute in second
State and in the second top box body, be provided with the second deashing device 35, in described second raising middle flask body, be provided with the second heat exchange element 36, described
Second lower box bottom is provided with the second blanking device 37；
In the form of seamless steel pipe, seamless steel pipe rear and front end and card adopt seamless welding to described second heat exchange element 36；
Described second deashing device 35 includes crossbeam 351, and described crossbeam 351 is lifted with many chains 352, described chain 352
The chain link left and right sides be provided with prickle 353.
Operation principle：
730 DEG C about high-temperature dust-containing flue gas from rear side air preheater first gas approach enter, from rear side air preheat
First exhanst gas outlet of device out passes through the first gas approach that the first exhaust gases passes enter the air preheater of front side afterwards, then
From the first exhanst gas outlet of front side air preheater out, now the temperature of high-temperature dust-containing flue gas is probably at 460 DEG C, empty from front side
About 30 DEG C of the air themperature that the air of air preheater enters, air is heated to 460 after former and later two air preheaters；From
The high-temperature flue gas of the first exhanst gas outlet out 460 DEG C about of front side air preheater pass through the second exhaust gases passes and enter coal gas
Second gas approach of preheater, then discharges from the second exhanst gas outlet of gas preheater, now flue-gas temperature is reduced to about
370 DEG C, about 30 DEG C of the gas temperature entering from the gas inlet of gas preheater, coal gas is interior after gas preheater to be heated to
260 DEG C about.
In addition to the implementation, present invention additionally comprises there being other embodiment, all employing equivalents or equivalence replacement
The technical scheme that mode is formed, all should fall within the scope of the hereto appended claims.
Claims (6)
1. a kind of high-temperature flue gas cooling heat exchanger it is characterised in that：It includes frame（1）, described frame（1）Before side is provided with
Latter two air preheater（2）, described frame（1）Opposite side is provided with a gas preheater（3）, described air preheater（2）
Top is provided with the first gas approach（21）With the first exhanst gas outlet（22）, described air preheater（2）Both sides set respectively in front and back
It is equipped with air intlet（23）And air outlet slit（24）, described gas preheater（3）Top is provided with the second gas approach（31）With
Second exhanst gas outlet（32）, described gas preheater（3）Both sides are respectively arranged with gas inlet in front and back（33）And gas exit
（34）, the air preheater of rear side（2）The first exhanst gas outlet（22）Air preheater with front side（2）The first gas approach
（21）Between pass through the first exhaust gases passes（4）It is connected, the air preheater of front side（2）The first exhanst gas outlet（22）With coal gas
Preheater（3）The second gas approach（31）Between the second exhaust gases passes（5）It is connected, the air preheater of front side（2）Sky
Gas exports（24）Air preheater with rear side（2）Air intlet（23）Between pass through air duct（6）It is connected.
2. a kind of high-temperature flue gas cooling heat exchanger according to claim 1 it is characterised in that：Described air preheater（2）
Including casing and the first lower box in the first upper box being sequentially arranged from top to bottom, first, setting in described first top box body
There is the first deashing device（25）, in described first raising middle flask body, it is provided with the first heat exchange element（26）, described first lower box bottom
It is provided with the first blanking device（27）.
3. a kind of high-temperature flue gas cooling heat exchanger according to claim 2 it is characterised in that：Described first heat exchange element
（26）Using flat tube configuration.
4. a kind of high-temperature flue gas cooling heat exchanger according to claim 1 it is characterised in that：Described gas preheater（3）
Including casing and the second lower box in the second upper box being sequentially arranged from top to bottom, second, setting in described second top box body
There is the second deashing device（35）, in described second raising middle flask body, it is provided with the second heat exchange element（36）, described second lower box bottom
It is provided with the second blanking device（37）.
5. a kind of high-temperature flue gas cooling heat exchanger according to claim 4 it is characterised in that：Described second heat exchange element
（36）In the form of seamless steel pipe, seamless steel pipe rear and front end and card adopt seamless welding.
6. a kind of high-temperature flue gas cooling heat exchanger according to claim 4 it is characterised in that：Described second deashing device
（35）Including crossbeam（351）, described crossbeam（351）On be lifted with many chains（352）, described chain（352）Chain link about
Both sides are provided with prickle（353）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056876.3A CN106482532B (en) | 2016-11-26 | 2016-11-26 | High-temperature flue gas cooling heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056876.3A CN106482532B (en) | 2016-11-26 | 2016-11-26 | High-temperature flue gas cooling heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106482532A true CN106482532A (en) | 2017-03-08 |
| CN106482532B CN106482532B (en) | 2019-04-26 |
Family
ID=58274493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611056876.3A Active CN106482532B (en) | 2016-11-26 | 2016-11-26 | High-temperature flue gas cooling heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106482532B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405175Y (en) * | 1999-09-23 | 2000-11-08 | 上海宝钢集团公司 | Arrangement for gas preheating |
| CN201706527U (en) * | 2010-07-02 | 2011-01-12 | 河南方圆工业炉设计制造有限公司 | Combination air preheater |
| CN202316119U (en) * | 2011-11-29 | 2012-07-11 | 浙江信雅达环保工程有限公司 | Cathode device for electric dust removal |
| CN202902284U (en) * | 2012-10-19 | 2013-04-24 | 焦作力合机械制造有限公司 | Air and gas preheater |
| CN203758257U (en) * | 2013-12-27 | 2014-08-06 | 中冶长天国际工程有限责任公司 | Under-machine type heat exchanger for double-preheating sintering ignition furnace |
| CN104534894A (en) * | 2015-01-07 | 2015-04-22 | 中冶华天工程技术有限公司 | Conversion and utilization system of flue gas waste heat resources |
| CN206269607U (en) * | 2016-11-26 | 2017-06-20 | 江苏江涛环境工程有限公司 | High-temperature flue gas cooling heat exchanger |
-
2016
- 2016-11-26 CN CN201611056876.3A patent/CN106482532B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405175Y (en) * | 1999-09-23 | 2000-11-08 | 上海宝钢集团公司 | Arrangement for gas preheating |
| CN201706527U (en) * | 2010-07-02 | 2011-01-12 | 河南方圆工业炉设计制造有限公司 | Combination air preheater |
| CN202316119U (en) * | 2011-11-29 | 2012-07-11 | 浙江信雅达环保工程有限公司 | Cathode device for electric dust removal |
| CN202902284U (en) * | 2012-10-19 | 2013-04-24 | 焦作力合机械制造有限公司 | Air and gas preheater |
| CN203758257U (en) * | 2013-12-27 | 2014-08-06 | 中冶长天国际工程有限责任公司 | Under-machine type heat exchanger for double-preheating sintering ignition furnace |
| CN104534894A (en) * | 2015-01-07 | 2015-04-22 | 中冶华天工程技术有限公司 | Conversion and utilization system of flue gas waste heat resources |
| CN206269607U (en) * | 2016-11-26 | 2017-06-20 | 江苏江涛环境工程有限公司 | High-temperature flue gas cooling heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN106482532B (en) | 2019-04-26 |
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