CN201014754Y - Flue gas waste heat utilization device of corrosion-proof energy-saving type industry boiler - Google Patents
Flue gas waste heat utilization device of corrosion-proof energy-saving type industry boiler Download PDFInfo
- Publication number
- CN201014754Y CN201014754Y CNU2007200899253U CN200720089925U CN201014754Y CN 201014754 Y CN201014754 Y CN 201014754Y CN U2007200899253 U CNU2007200899253 U CN U2007200899253U CN 200720089925 U CN200720089925 U CN 200720089925U CN 201014754 Y CN201014754 Y CN 201014754Y
- Authority
- CN
- China
- Prior art keywords
- boiler
- water heater
- economizer
- temperature
- communicated
- 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
Links
Images
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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a corrosion-preventing energy-saving industrial boiler smoke afterheat utilizing device, comprising a coal economizer arranged in the flue of the boiler tail, and a water heater communicated with the coal economizer. The water heater is communicated with a boiler steam manifold through a heating pipeline. A temperature self-control device used for controlling as well as regulating the pressure and flow of the boiler steam is connected between the steam pipe and the exit of the water heater that are communicated with water heater and the boiler steam manifold. The device can reduce the smoke exhaust temperature of the boiler within a vast scale and simultaneously ensure the lowest wall surface temperature of the heated surface of the coal economizer in a higher level with no dew as well as being adjustable and controllable. The utility model can avoid the occurrence of corrosion in a low temperature and prolong the service life of the device, thereby stopping the clogging phenomenon caused by dew. The utility model can reach the double effects of energy saving and environment protection. A serpentuator coal economizer with fins can be adopted as the heated surface of the furnace tail part, which not only leads the structure to be more compact, but also saves a mass of steel products.
Description
Technical field
The utility model relates to a kind of Industrial Boiler or kiln gas residual heat using device, relates in particular to a kind of anticorrosion power-saving industrial residual heat from boiler fume use device.
Background technology
Common Industrial Boiler flue gas directly causes a large amount of energy wastes by cleaner discharging atmosphere without UTILIZATION OF VESIDUAL HEAT IN, waste for the economization energy, heated surface at the end of boiler is provided with economizer, again because economizer is the normal temperature feedwater, minimum wall temperature is more near feed temperature, even as 160 ℃ or higher, economizer still can not exist cold end corrosion and clogging phenomenon to the Industrial Boiler back-end surfaces unavoidably, influences the normal operation of boiler under higher exhaust gas temperature.So at present, some boiler design exhaust gas temperature reaches 200 ℃, even higher, causes a large amount of energy wastes.Just because of this, the Industrial Boiler economizer adopts cast iron gilled tube economizer usually, its structure heaviness, and the ferrous materials that the pin consumption is a large amount of, though stronger corrosion resistance is arranged, because the stifled ash that dewfall causes can't effectively solve.
Summary of the invention
Utilize problem insufficient or that flue gas causes corrosion and blocks up ash economizer in order to solve residual heat from boiler fume, the purpose of this utility model provides and a kind ofly boiler afterheat is fully used and can avoids low-temperature flue gas to corrosion and clogging phenomenon that equipment caused, both save the energy, resource, improved the anticorrosion power-saving industrial residual heat from boiler fume use device of service life of equipment again.
The technical solution of the utility model realizes in the following manner:
A kind of anticorrosion power-saving industrial residual heat from boiler fume use device, it by be installed in the economizer in the boiler back end ductwork, the water heater that is communicated with economizer is formed, wherein, water heater is communicated with boiler-steam dome by water back, is connected with one and is used for controlling and regulating the pressure of Boiler Steam and the electronic temperature controller of flow between the outlet of steam pipe that water heater communicates with boiler-steam dome and water heater.
Electronic temperature controller also comprise be provided with on the steam pipe from control regulation valve, be arranged on the temperature measurer in water heater boiler feedwater exit, temperature measurer is connected with self-con-tained unit, self-con-tained unit be connected from control regulation valve.The self-con-tained unit instruction is moved from control regulation valve, and regulate boiler pressure and the flow that the water heater import was controlled and regulated to its aperture, reaching the purpose of automatic control economizer import feed temperature, thereby realize the automatic control of economizer lowermost wall surface temperature.
Minimum being set at of control temperature of electronic temperature controller: boiler smoke acid dew-point temperature+1～10 ℃.
The economizer two ends are connected with the circulation pipe that is communicated with boiler-steam dome respectively, and on the circulation pipe circulation pipe valve are housed respectively.
The partition valve was housed on the communicating pipe between economizer and the water heater.
Water heater also is communicated with circulation pipe between the economizer by communicating pipe and valve and boiler-steam dome to water end (W.E.).
Boiler feedwater of the present utility model and UTILIZATION OF VESIDUAL HEAT IN flow process are as follows:
The normal temperature boiler feedwater of economizer is by water heater 10, enters economizer 3 again after utilizing Boiler Steam to be heated to above 5 ℃ of the flue gas acid dew point temperature of setting.Temperature measurer 6 by the water heater outlet records the feed temperature that enters the economizer inlet, by electronic temperature controller 8 and from the feed temperature of control regulation valve 9 automatic control and adjustment economizers inlets at setting range, make economizer lowermost wall surface temperature be higher than flue gas acid dew point all the time, avoid it to suffer cold end corrosion.Boiler feedwater enters drum or drum 1 after absorbing flue gas heat by economizer 3.High-temperature flue gas is after the economizer heat release, and temperature is reduced to a little more than economizer inlet feed temperature and discharged, and waste heat is fully used.Boiler Steam is discharged by vegetables water valve 7 after entering water heater 10 condensations.When stopping boiler feedwater, open circulation pipe valve 4, make the interior feedwater of economizer by circulation pipe 2 Natural Circulation under the situation of being heated; Cut off valve 5 and have four, when ignition of the boiler or maintenance economizer and water heater, play the partition effect.
Good effect of the present utility model is:
This device can guarantee when reducing exhaust gas temperature significantly that its economizer surface wall minimum temperature is in not dewfall of higher level, and it is adjustable controlled, avoid the generation of cold end corrosion, prolong the service life of economizer, thereby also stopped the clogging phenomenon that causes because of dewfall.Exhaust gas temperature is reduced significantly, and fume afterheat is utilized effectively, and reaches the double effects of energy-conserving and environment-protective.
Because this device has been guaranteed economizer and has been avoided the infringement of cold end corrosion, no matter be that Industrial Boiler or various station boiler can adopt finned loop economizer as heated surface at the end of boiler audaciously, not only structure is compact more, can also save a large amount of steel.
Description of drawings:
Fig. 1 is a theory structure schematic diagram of the present utility model.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As seen from Figure 1: the utility model by be installed in the economizer 3 in the boiler back end ductwork, the water heater 10 that is communicated with economizer is formed, its water heater 10 is communicated with boiler-steam dome 1 by jet chimney, is connected with an electronic temperature controller 8 that is used for controlling and regulating boiler pressure and flow between the outlet of steam pipe that water heater communicates with boiler-steam dome and water heater.
It can also be seen that by Fig. 1: electronic temperature controller 8 also comprise be provided with on the steam pipe from control regulation valve 9, be arranged on the temperature measurer 6 in water heater boiler feedwater exit, temperature measurer 6 is connected with self-con-tained unit 8, self-con-tained unit 8 be connected from control regulation valve 9.Self-con-tained unit 8 instructions are moved from control regulation valve, and regulate boiler pressure and the flow that the water heater import was controlled and regulated to its aperture, reaching the purpose of automatic control economizer import feed temperature, thereby realize the automatic control of economizer lowermost wall surface temperature.
Minimum being set at of control temperature of electronic temperature controller 8: the boiler smoke acid dew point (℃)+1～10 ℃, so just avoided the sour dewfall phenomenon in the flue gas, can make economizer avoid the infringement of cold end corrosion.
Also can be found out by Fig. 1: the economizer two ends are connected with the circulation pipe 2 that is communicated with boiler-steam dome 1 respectively, and circulation pipe valve 4 is housed on the circulation pipe respectively so that when stopping boiler feedwater, open circulation pipe valve 4, make the interior feedwater of economizer by circulation pipe 2 Natural Circulation under the situation of being heated.
Also can find out by Fig. 1: on the communicating pipe between economizer 3 and the water heater 10, also be provided with and cut off valve 5.
Also can be found out by Fig. 1: water heater 10 also is communicated with circulation pipe between the economizer by communicating pipe and valve and boiler-steam dome to water end (W.E.).
Usually, be in all the time more than the flue gas acid dew point, just can avoid it to suffer cold end corrosion as long as keep heating surface lowermost wall surface temperature.This device as heated surface at the end of boiler, utilizes economizer then feed-water heater boiler feedwater is heated to and enters economizer more than the flue gas acid dew point temperature afterwards again.At this moment, even exhaust gas temperature is a little more than flue gas acid dew point, as long as heating surface design ground enough just can be accomplished greatly, the lowermost wall surface temperature of economizer will be in more than the flue gas acid dew point, heating surface can not suffer cold end corrosion, has avoided the generation of the clogging phenomenon that dewing corrosion caused simultaneously yet.Utilize the thermal source of Boiler Steam as the heating boiler feedwater, the feed temperature that enters economizer can be controlled or be regulated to the steam regulation control valve, thereby realize that economizer lowermost wall surface temperature is adjustable controlled.This device both can be installed on vertical gas pass, also can be installed on horizontal flue, very was convenient to arrange.For example: 95 ℃ of known certain boiler smoke acid dew points as long as the boiler feed temperature that control enters economizer is not less than 95 ℃, just can guarantee that economizer avoids cold end corrosion.And exhaust gas temperature at this moment reduces to 120 ℃ and do not had technical problem, can reclaim a large amount of fume afterheats, reaches the double effects of energy-conserving and environment-protective.Along with the change of boiler coal and combustion conditions, flue gas acid dew point will change, and regulate the feed temperature of economizer import easily by steam control valve, make it be higher than flue gas acid dew point, can guarantee that still economizer exempts from cold end corrosion.
Claims (6)
1. anticorrosion power-saving industrial residual heat from boiler fume use device, it by be installed in the economizer (3) in the boiler back end ductwork, the water heater (10) that is communicated with economizer is formed, it is characterized in that: water heater (10) is communicated with boiler-steam dome (1) by jet chimney, is connected with an electronic temperature controller (8) that is used for controlling and regulating boiler pressure and flow between the outlet of steam pipe that water heater communicates with boiler-steam dome and water heater.
2. anticorrosion power-saving industrial residual heat from boiler fume use device according to claim 1, it is characterized in that: electronic temperature controller (8) also comprise be provided with on the steam pipe from control regulation valve (9), be arranged on the temperature measurer (6) in water heater boiler feedwater exit, temperature measurer (6) is connected with self-con-tained unit (8), self-con-tained unit (8) be connected from control regulation valve (9).
3. anticorrosion power-saving industrial residual heat from boiler fume use device according to claim 2 is characterized in that: minimum being set at of control temperature of electronic temperature controller (8): the boiler smoke acid dew-point temperature (℃)+1～10 ℃.
4. anticorrosion power-saving industrial residual heat from boiler fume use device according to claim 3 is characterized in that: the economizer two ends are connected with the circulation pipe (2) that is communicated with boiler-steam dome (1) respectively, and circulation pipe valve (4) is housed respectively on the circulation pipe.
5. anticorrosion power-saving industrial residual heat from boiler fume use device according to claim 4 is characterized in that: be equipped with on the communicating pipe between economizer (3) and the water heater (10) and cut off valve (5).
6. anticorrosion power-saving industrial residual heat from boiler fume use device according to claim 5 is characterized in that: water heater (10) also is communicated with circulation pipe between the economizer by communicating pipe and valve and boiler-steam dome to water end (W.E.).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200899253U CN201014754Y (en) | 2007-04-06 | 2007-04-06 | Flue gas waste heat utilization device of corrosion-proof energy-saving type industry boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200899253U CN201014754Y (en) | 2007-04-06 | 2007-04-06 | Flue gas waste heat utilization device of corrosion-proof energy-saving type industry boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201014754Y true CN201014754Y (en) | 2008-01-30 |
Family
ID=39026552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200899253U Expired - Fee Related CN201014754Y (en) | 2007-04-06 | 2007-04-06 | Flue gas waste heat utilization device of corrosion-proof energy-saving type industry boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201014754Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486869A (en) * | 2013-09-25 | 2014-01-01 | 杨君廷 | Dewing-free smoke heat energy carrying and transferring device |
| CN107631287A (en) * | 2017-09-29 | 2018-01-26 | 苏州海陆重工股份有限公司 | The waterworks of boiler economizer |
| CN108775573A (en) * | 2018-06-20 | 2018-11-09 | 江西四冶钢结构有限责任公司 | A kind of novel electricity generation boiler of burning away the refuse |
| CN115560337A (en) * | 2022-10-18 | 2023-01-03 | 浙江大学 | A low-temperature corrosion protection method and device for high-halogen hazardous waste incineration waste heat boiler shutdown |
-
2007
- 2007-04-06 CN CNU2007200899253U patent/CN201014754Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486869A (en) * | 2013-09-25 | 2014-01-01 | 杨君廷 | Dewing-free smoke heat energy carrying and transferring device |
| CN107631287A (en) * | 2017-09-29 | 2018-01-26 | 苏州海陆重工股份有限公司 | The waterworks of boiler economizer |
| CN108775573A (en) * | 2018-06-20 | 2018-11-09 | 江西四冶钢结构有限责任公司 | A kind of novel electricity generation boiler of burning away the refuse |
| CN115560337A (en) * | 2022-10-18 | 2023-01-03 | 浙江大学 | A low-temperature corrosion protection method and device for high-halogen hazardous waste incineration waste heat boiler shutdown |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201251371Y (en) | Flue gas pre-cooling system with highly-effective water and energy conservation | |
| CN201028791Y (en) | Anti-corrosion energy-saving boiler flue gas residual heat utilization device | |
| CN102607010B (en) | Composite phase-change heat exchange system | |
| CN106090971A (en) | A kind of combined steam flue gas MGGH system and method | |
| CN103672936A (en) | Natural circulation indirect type flue gas reheater | |
| CN201014754Y (en) | Flue gas waste heat utilization device of corrosion-proof energy-saving type industry boiler | |
| CN106123002A (en) | A kind of flue gas MGGH system and method using condensation water heat exchange | |
| CN100593683C (en) | Automatic control system for wall temperature of boiler discharged smoke heat recovery heat exchanger | |
| CN101261008B (en) | Liquid phase intermediate medium heat exchanging type heat exchanger | |
| CN201259210Y (en) | Non-phase-change composite heat exchanger | |
| CN216694504U (en) | Sintering flue gas treatment system | |
| CN201764488U (en) | Low pressure coal saving device with automatic temperature control system | |
| CN205048411U (en) | Gas boiler | |
| CN203549758U (en) | Carbon calciner waste heat boiler | |
| CN202203927U (en) | Economizer with energy-saving circulation system | |
| CN202002080U (en) | Combined phase-change heat exchanger | |
| CN215808592U (en) | Controllable double-phase heating medium forced circulation heat exchange system | |
| CN105066093A (en) | Gas-fire boiler | |
| CN215675283U (en) | Subcritical boiler multi-target collaborative optimization air preheater anti-blocking system | |
| CN111895442A (en) | Flue gas treatment system of power plant | |
| CN104315872B (en) | Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect | |
| CN212390884U (en) | Regulation type phase transition heat medium heat transfer device | |
| CN202328312U (en) | Boiler tail gas heat exchanger | |
| CN209484578U (en) | A kind of boiler of power plant flue gas waste heat recovery apparatus using heat pipe energy-saving technology | |
| CN209214104U (en) | A kind of efficient mobile Hot water units |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20110406 |