CN202195467U - Flue gas heat recovery system for coke oven - Google Patents
Flue gas heat recovery system for coke oven Download PDFInfo
- Publication number
- CN202195467U CN202195467U CN2011202657772U CN201120265777U CN202195467U CN 202195467 U CN202195467 U CN 202195467U CN 2011202657772 U CN2011202657772 U CN 2011202657772U CN 201120265777 U CN201120265777 U CN 201120265777U CN 202195467 U CN202195467 U CN 202195467U
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- China
- Prior art keywords
- flue gas
- heat
- housing
- coke oven
- heat exchange
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Abstract
The utility model discloses a flue gas heat recovery system for a coke oven. The flue gas heat recovery system mainly comprises a heat exchanger, a coal economizer and a deoxygenator, wherein the heat exchanger comprises a housing with a smoke inlet and a smoke outlet, and a heat exchanging box which is fixed in the housing and has a water inlet and a steam outlet. The smoke outlet penetrates through a flue gas channel of the coal economizer, and the heat exchange channel of the coal economizer connects with the deoxygenator and then communicates with the water inlet of the heat exchanging box. The flue gas heat recovery system is reasonable in integral structure, greatly reduces operation cost of recovering flue gas waste heat, improves efficiency of waste heat recovery, and increases economic benefits.
Description
Technical field
The utility model relates to a kind of heat reclamation device, is specifically related to a kind of coke oven flue gas residual neat recovering system.
Background technology
Existing coke oven flue gas great majority are to be discharged in the air, not only cause air pollution, and 260 ℃ flue gas also is quite serious to climate warming.At present; In the Industrial Stoves field; The heat-exchanger rig that is used to reclaim the coke oven flue gas waste heat is prevailing heat-exchanger rig; Because there are defectives such as corrosion resistance is weak, the deashing difficulty is big in it, therefore makes these heat-exchanger rigs just can occur the defective that exchange capability of heat sharply descends after one month in normal operation, can not satisfy the demand of present energy-saving and emission-reduction.
After existing heat-exchanger rig carried out a heat exchange, temperature was also higher, caused the efficient of waste heat recovery not high.
Economizer is exactly the heating surface that in the back-end ductwork boiler feedwater is heated into the saturation water under the drum pressure, is the flue gas than lower temperature because its absorbs, has reduced the exhaust gas temperature of flue gas, has saved the energy, has improved efficient, so be referred to as economizer.Economizer comprises exhaust gases passes and heat exchanger channels, flue gas get into behind the exhaust gases passes with heat exchanger channels in the exchange media heat exchange after, reduced the exhaust gas temperature of flue gas, all can save the energy, improve the efficient of waste heat recovery.
The utility model content
The technical problem that the utility model will solve is the problem that the heat-exchanger rig heat exchange efficiency is not high, corrosion resistance weak, the deashing difficulty is big that is used for the coke oven flue gas waste heat recovery in the prior art.
The technical scheme that the utility model solves this technical problem is: the coke oven flue gas residual neat recovering system; It mainly is made up of heat-exchanger rig, economizer, oxygen-eliminating device; Said heat-exchanger rig is by having the into housing of mouth and outlet flue; And be fixed on this enclosure interior and have water inlet and the heat exchange box of vapor outlet port composition, said outlet flue passes the exhaust gases passes of economizer, and the heat exchanger channels of economizer is connected with the water inlet of heat exchange box after connecting oxygen-eliminating device.
Further, said oxygen-eliminating device also is connected with the vapor outlet port of heat exchange box.
Further, the inside of said housing also is provided with the ultrasonic wave deashing device, has the air inlet that is communicated with this ultrasonic wave deashing device on the said housing, then is provided with cleaning door in the bottom of housing.
Wherein, above-mentioned said heat exchange box outer wall also is provided with heat pipe.
Wherein, the outer surface of the inner surface of above-mentioned said housing, heat exchange box and heat pipe is coated with the nickel-based brazing layer.
More preferably, the end of said outlet flue also is provided with smoke exhaust fan.
The utility model compared with prior art has following advantage:
(1) through economizer is set, reclaims fume afterheat further, improved heat exchange efficiency.
(2), can remove the oxygen in the water that gets into heat-exchanger rig, thereby prevent that heat exchanger is inner because the corrosion that oxygen causes through oxygen-eliminating device is set.
(3) a part of steam that heat exchange in the heat-exchanger rig is produced is used for the heating of oxygen-eliminating device water, does not need additional energy source that the oxygen in the water is removed.
(4) outer surface at inner surface, heat exchange box and the heat pipe of housing is coated with the nickel-based brazing layer, therefore can effectively promote the corrosion resistance of heat-exchanger rig.
(5) because the utility model is provided with the ultrasonic wave deashing device in housing, therefore can be effectively with shaking attached to the dust on housing and the water tank, thereby reach the purpose of removing dust.
The utility model reasonable integral structure can not only significantly reduce the operating cost of flue gas waste heat recovery, and can also improve the added value of waste heat recovery, increases economic efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Process chart when Fig. 2 uses for the utility model.
Wherein the Reference numeral title in the accompanying drawing is respectively:
The 1-housing, the 2-heat exchange box, 3-advances mouth, 4-air inlet, 5-steam (vapor) outlet, 6-heat pipe, 7-softened water tank, 8-economizer, 9-outlet flue, 10-smoke exhaust fan, 11-oxygen-eliminating device, 12-ultrasonic wave deashing device, 13-cleaning door.
The specific embodiment
Embodiment
As shown in Figure 1; The coke oven flue gas residual neat recovering system; It mainly is made up of heat-exchanger rig, economizer 8, oxygen-eliminating device 11, and said heat-exchanger rig is by the housing 1 with mouth into 3 and outlet flue 9, and is fixed on heat exchange box 2 compositions that this housing 1 is inner and have water inlet and vapor outlet port 5; Said outlet flue 9 passes the exhaust gases passes of economizer 8, and the heat exchanger channels of economizer 8 then connects oxygen-eliminating device 11 backs and is connected with the water inlet of heat exchange box 2.
In order to make oxygen-eliminating device 11 under the situation that does not need external energy, remove oxygen, said oxygen-eliminating device 11 also is connected with the vapor outlet port 5 of heat exchange box 2.The steam of a part after heat-exchanger rig heating gets into oxygen-eliminating device 11 like this, makes the water heating in the oxygen-eliminating device 11 and oxygen is removed.
In order to remove the flue dust that deposits in the heat-exchanger rig, the inside of said housing 1 also is provided with ultrasonic wave deashing device 12, has the air inlet 4 that is communicated with this ultrasonic wave deashing device 12 on the said housing 1, then is provided with cleaning door 13 in the bottom of housing 1.Like this, when needing dedusting, feed nitrogen toward air inlet 4, nitrogen produces vibration through the effect of ultrasonic wave deashing device 12, thereby dust is fallen down and removes from cleaning door 13.
In order to make the heat-exchanger rig heat exchange efficiency higher, said heat exchange box 2 outer walls also are provided with heat pipe 6.
In order to improve the corrosion resistance of heat-exchanger rig, the outer surface of the inner surface of said housing 1, heat exchange box 2 and heat pipe 6 is coated with the nickel-based brazing layer.
Flue gas after the cooling is discharged, and the end of said outlet flue 9 also is provided with smoke exhaust fan 10.
In order to prevent that heat exchange water from getting into heat-exchanger rig and producing incrustation scale, heat exchange efficiency is reduced, can on the heat exchanger channels of economizer 8, connect a softened water tank 7, cooling water is processed into soft water through softened water tank 7, thereby can effectively prevent the generation of incrustation scale.
How to use the utility model for better explanation, describe below in conjunction with accompanying drawing 2.
Referring to accompanying drawing 2, a bypass passage is set on total exhaust gases passes that two coke ovens come out, the coke oven flue gas residual neat recovering system of the utility model is set on the bypass passage, flue gas carries out getting into the chimney discharge again after the heat exchange through native system.Steam after the heating gets into the boiler room, and with the water heating generation drum of boiler room, drum is supplied with to the producing region, coke-oven plant through pipeline and used.
Claims (6)
1. coke oven flue gas residual neat recovering system; It is characterized in that: it mainly is made up of heat-exchanger rig, economizer (8), oxygen-eliminating device (11); Said heat-exchanger rig is by having the into housing (1) of mouth (3) and outlet flue (9); And be fixed on heat exchange box (2) composition that this housing (1) is inner and have water inlet and vapor outlet port (5), and said outlet flue (9) passes the exhaust gases passes of economizer (8), and the heat exchanger channels of economizer (8) then connects oxygen-eliminating device (11) back and is connected with the water inlet of heat exchange box (2).
2. coke oven flue gas residual neat recovering system according to claim 1 is characterized in that: said oxygen-eliminating device (11) also is connected with the vapor outlet port (5) of heat exchange box (2).
3. coke oven flue gas residual neat recovering system according to claim 2; It is characterized in that: the inside of said housing (1) also is provided with ultrasonic wave deashing device (12); Have the air inlet (4) that is communicated with this ultrasonic wave deashing device (12) on the said housing (1), then be provided with cleaning door (13) in the bottom of housing (1).
4. according to each described coke oven flue gas residual neat recovering system of claim 1～3, it is characterized in that: said heat exchange box (2) outer wall also is provided with heat pipe (6).
5. coke oven flue gas residual neat recovering system according to claim 4 is characterized in that: the outer surface of the inner surface of said housing (1), heat exchange box (2) and heat pipe (6) is coated with the nickel-based brazing layer.
6. coke oven flue gas residual neat recovering system according to claim 5 is characterized in that: the end of said outlet flue (9) also is provided with smoke exhaust fan (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202657772U CN202195467U (en) | 2011-07-26 | 2011-07-26 | Flue gas heat recovery system for coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202657772U CN202195467U (en) | 2011-07-26 | 2011-07-26 | Flue gas heat recovery system for coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202195467U true CN202195467U (en) | 2012-04-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202657772U Expired - Fee Related CN202195467U (en) | 2011-07-26 | 2011-07-26 | Flue gas heat recovery system for coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202195467U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482781A (en) * | 2014-12-30 | 2015-04-01 | 黑龙江国德节能服务有限公司 | Device for extracting flue gas heat source by virtue of stainless steel brazed heat exchangers and extraction method |
| CN104833224A (en) * | 2015-05-17 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Thermal protection type coke oven waste heat recovery power generation system based on power source voltage adjustment circuit |
| CN104880080A (en) * | 2015-05-15 | 2015-09-02 | 成都中冶节能环保工程有限公司 | Thermal induction type coke oven after heat recycling power generation system based on power supply rectification circuit |
| CN105423276A (en) * | 2015-12-22 | 2016-03-23 | 绵阳市鑫科源环保科技有限公司 | Afterheat recovering device for high-temperature dust-containing smoke |
-
2011
- 2011-07-26 CN CN2011202657772U patent/CN202195467U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482781A (en) * | 2014-12-30 | 2015-04-01 | 黑龙江国德节能服务有限公司 | Device for extracting flue gas heat source by virtue of stainless steel brazed heat exchangers and extraction method |
| CN104880080A (en) * | 2015-05-15 | 2015-09-02 | 成都中冶节能环保工程有限公司 | Thermal induction type coke oven after heat recycling power generation system based on power supply rectification circuit |
| CN104833224A (en) * | 2015-05-17 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Thermal protection type coke oven waste heat recovery power generation system based on power source voltage adjustment circuit |
| CN105423276A (en) * | 2015-12-22 | 2016-03-23 | 绵阳市鑫科源环保科技有限公司 | Afterheat recovering device for high-temperature dust-containing smoke |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent director of Chengdu MCC energy saving and Environmental Protection Engineering Co.,Ltd. Document name: Notice of termination of patent right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20200726 |