CN106765289A - A kind of boiler fresh air preheating device - Google Patents
A kind of boiler fresh air preheating device Download PDFInfo
- Publication number
- CN106765289A CN106765289A CN201710104513.0A CN201710104513A CN106765289A CN 106765289 A CN106765289 A CN 106765289A CN 201710104513 A CN201710104513 A CN 201710104513A CN 106765289 A CN106765289 A CN 106765289A
- Authority
- CN
- China
- Prior art keywords
- fresh air
- housing
- outlet
- boiler
- preheating device
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/40—Carbon monoxide
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a kind of boiler fresh air preheating device, including housing, housing is respectively arranged at two ends with smoke inlet and exhanst gas outlet, fresh air inlet and fresh air outlet are additionally provided with housing, fresh air channel is provided with housing, exhanst gas outlet is provided with oxygen-containing quantity sensor, and fresh air outlet is provided with the first temperature sensor and wind pressure sensor, fresh air outlet is additionally provided with integrated regulation damper, is additionally provided with control unit.This boiler fresh air preheating device is heated by high-temperature flue gas and by carrying out heat transfer between the air in fresh air channel to the air in fresh air channel; and the unlatching size of integrated regulation damper is controlled by wind pressure value that oxygen content and fresh air that control unit connects oxygen-containing quantity sensor and wind pressure sensor real-time detection exhanst gas outlet are exported; when ensureing that heat transference efficiency reaches maximum; oxynitrides and hydrocarbon in the waste gas of exhanst gas outlet discharge is minimum; the double effectses for improving rate of heat exchange and environmental protection are reached, this is invented for field of heat exchange.
Description
Technical field
The present invention relates to field of heat exchange, more particularly to a kind of boiler fresh air preheating device.
Background technology
With China's Optimization of Energy Structure, propulsion energy-saving emission reduction policy, gas fired-boiler is replacing coal-burning boiler in city
It is used widely in life, industrial production, improves gas utilization level and be increasingly becoming the one of energy-environment project field
Individual important topic.
Combustion gas（Oil）Boiler export can generally be provided with flue gas waste heat recoverer, be heated mainly as boiler feedwater or raw
Heating of supplying water living, is difficult to ensure that exhaust gas temperature drops to sufficiently low level in heating process, flue gas discharge temperature is typically maintained in
More than 70 DEG C.Due to 70 DEG C to environment temperature 25 DEG C there is the larger temperature difference, the sensible heat and recovery of latent heat measurer in flue gas have one
Fixed space.
The content of the invention
It is an object of the invention to provide a kind of sensible heat that can effectively utilize in flue gas and the boiler fresh air preheating device of latent heat.
The technical solution used in the present invention is：
A kind of boiler fresh air preheating device, including internal is the housing of cavity setting, being respectively arranged at two ends with for housing is communicated with cavity
Smoke inlet and exhanst gas outlet, be additionally provided with housing fresh air inlet and fresh air outlet, be provided with housing connection fresh air inlet and
The fresh air channel of fresh air outlet, exhanst gas outlet is provided with the oxygen-containing quantity sensor of oxygen content in measurement discharge flue gas, and fresh air outlet sets
There are the wind pressure sensor of the first temperature sensor of the temperature of measurement discharge fresh air and the blast of measurement discharge fresh air, fresh air outlet
The integrated regulation damper of adjustable exhaust air rate size is additionally provided with, is additionally provided with and oxygen-containing quantity sensor, wind pressure sensor, the first temperature
The control unit that degree sensor is connected with integrated regulation damper.
The improvement of technical solution of the present invention is further used as, the second temperature being connected with control unit is provided with smoke inlet
Sensor.
The improvement of technical solution of the present invention is further used as, the bottom in housing is provided with the drain bar being obliquely installed, and is located at
The drain valve on housing is provided with below drain bar.
The improvement of technical solution of the present invention is further used as, fresh air channel is arranged in housing in the shape of a spiral, fresh air inlet
Hull outside is extend out to fresh air outlet.
Beneficial effects of the present invention：This boiler fresh air preheating device is by the high-temperature flue gas in the cavity for entering housing and process
Heat transfer is carried out between the air in fresh air channel to heat the air in fresh air channel, and is contained by control unit connection
The wind pressure value of oxygen content and the fresh air outlet of oxygen amount sensor and wind pressure sensor real-time detection exhanst gas outlet controls integrated tune
Save the unlatching size of damper, it is ensured that when heat transference efficiency reaches maximum, the oxynitrides in the waste gas of exhanst gas outlet discharge
It is minimum with hydrocarbon, reach the double effectses for improving rate of heat exchange and environmental protection.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is embodiment of the present invention overall structure diagram.
Specific embodiment
Reference picture 1, the present invention is a kind of boiler fresh air preheating device, including internal is the housing 1 of cavity setting, housing 1
The smoke inlet 2 and exhanst gas outlet 3 communicated with cavity are respectively arranged at two ends with, fresh air inlet 4 and fresh air outlet are additionally provided with housing 1
5, the fresh air channel 6 of connection fresh air inlet 4 and fresh air outlet 5 is provided with housing 1, exhanst gas outlet 3 is provided with measurement discharge flue gas
The oxygen-containing quantity sensor 7 of oxygen content, fresh air outlet 5 is provided with the first temperature sensor 8 and the measurement of the temperature of measurement discharge fresh air
The wind pressure sensor 9 of the blast of fresh air is discharged, fresh air outlet 5 is additionally provided with the integrated regulation damper of adjustable exhaust air rate size
10, it is additionally provided with and is connected with oxygen-containing quantity sensor 7, wind pressure sensor 9, the first temperature sensor 8 and integrated regulation damper 10
Control unit.
This boiler fresh air preheating device is by the high-temperature flue gas in the cavity for entering housing 1 and by the sky in fresh air channel 6
Heat transfer is carried out between gas to heat the air in fresh air channel 6, and the He of oxygen-containing quantity sensor 7 is connected by control unit
The wind pressure value of oxygen content and the fresh air outlet 5 of the real-time detection exhanst gas outlet 3 of wind pressure sensor 9 controls integrated regulation damper 10
Unlatching size, it is ensured that when heat transference efficiency reaches maximum, exhanst gas outlet 3 discharge waste gas in oxynitrides and oxidation of coal
Compound is minimum, reaches the double effectses for improving rate of heat exchange and environmental protection.
As the preferred embodiment of the present invention, the second temperature sensing being connected with control unit is provided with smoke inlet 2
Device 13.
Used as the preferred embodiment of the present invention, the bottom in housing 1 is provided with the drain bar 11 being obliquely installed, positioned at draining
The lower section of plate 11 is provided with the drain valve 12 on housing 1.
Used as the preferred embodiment of the present invention, fresh air channel 6 is arranged in housing 1 in the shape of a spiral, fresh air inlet 4 and new
Wind outlet 5 extend out to the outside of housing 1.
After normal temperature air is entered into housing 1 from fresh air inlet 4, absorb and entered in the cavity of housing 1 by smoke inlet 2
Sensible heat and latent heat in high-temperature flue gas, and discharged from fresh air outlet 5, fresh air outlet 5 is provided with integrated regulation damper 10, controllable
The exhaust air rate size of system regulation fresh air outlet 5.
The condensed water that heat in high-temperature flue gas is produced after being absorbed is separated out and water conservancy diversion by drain bar 11, and by hydrophobic
Valve 12 is expelled to outside housing 1.
The first temperature sensor 8 is provided with smoke inlet 2, the temperature of high-temperature flue gas at measurement smoke inlet 2, and
Oxygen-containing quantity sensor 7 is set at exhanst gas outlet 3, the oxygen content in the flue gas of discharge is measured.The is respectively provided with fresh air outlet 5
Two temperature sensors 13 and wind pressure sensor 9.
The temperature that oxygen content arranges value and fresh air at exhanst gas outlet 3 export the fresh air discharged at 5 is set by control unit
Degree setting value, and in the course of the work, in real time by the new air temperature at oxygen content actual value and the fresh air outlet 5 of exhanst gas outlet 3
Value is contrasted with oxygen content setting value and desired temperature, and exceedes oxygen content setting value or temperature in oxygen content actual value
When actual value is less than desired temperature, reduce the open degree of integrated regulation damper 10 to cause the sky into fresh air channel 6
Gas carries out more fully heat exchange with the high-temperature flue gas in cavity.
The flue-gas temperature for realizing discharge by the fresh air preheating device can be minimized as far as possible, and exhaust gas temperature value is realized
Less than 35 DEG C, the middle oxynitrides and the hydrocarbon overwhelming majority of flue gas are condensed precipitation, greatly reduce boiler fortune
NOx and the COx pollution and thermal pollution caused to environment in row.
In can realizing flue gas by the fresh air preheating device, excess air maintains 1.3%-1.5%, and excess oxygen is maintained
2.0%-4.0%。
Boiler entirety efficiency 4%-11%, even more high can be improved using the fresh air preheating device.
The setting of drain bar 11 and drain valve 12, the water that will be condensed in flue gas is concentrated, there is provided one
More easily sewage disposal scheme, reduces the pollution to environment because of flue gas condensed water elimination.
Certainly, the invention is not limited to above-mentioned implementation method, and those of ordinary skill in the art are without prejudice to originally
Equivalent variations or replacement can be also made on the premise of spirit, these equivalent modifications or replacement are all contained in the application right
It is required that in limited range.
Claims (4)
1. a kind of boiler fresh air preheating device, it is characterised in that：Including the housing that inside is set for cavity, the two ends point of the housing
The smoke inlet and exhanst gas outlet communicated with cavity are not provided with, and fresh air inlet and fresh air outlet are additionally provided with the housing, it is described
Be provided with housing connection fresh air inlet and fresh air outlet fresh air channel, the exhanst gas outlet be provided with measurement discharge flue gas in it is oxygen-containing
The oxygen-containing quantity sensor of amount, the fresh air outlet is provided with the first temperature sensor of the temperature of measurement discharge fresh air and measurement is discharged
The wind pressure sensor of the blast of fresh air, the fresh air outlet is additionally provided with the integrated regulation damper of adjustable exhaust air rate size, separately
It is provided with the control being connected with the oxygen-containing quantity sensor, wind pressure sensor, the first temperature sensor and integrated regulation damper
Unit.
2. boiler fresh air preheating device according to claim 1, it is characterised in that：It is provided with single with control at the smoke inlet
The connected second temperature sensor of unit.
3. boiler fresh air preheating device according to claim 1, it is characterised in that：Bottom in the housing is provided with inclination and sets
The drain bar put, is provided with the drain valve on housing below the drain bar.
4. boiler fresh air preheating device according to claim 1, it is characterised in that：The fresh air channel is arranged in the shape of a spiral
In housing, the fresh air inlet and fresh air outlet extend out to hull outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104513.0A CN106765289A (en) | 2017-02-24 | 2017-02-24 | A kind of boiler fresh air preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104513.0A CN106765289A (en) | 2017-02-24 | 2017-02-24 | A kind of boiler fresh air preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106765289A true CN106765289A (en) | 2017-05-31 |
Family
ID=58958950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710104513.0A Pending CN106765289A (en) | 2017-02-24 | 2017-02-24 | A kind of boiler fresh air preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106765289A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119905A (en) * | 2018-02-01 | 2018-06-05 | 营口绿源锅炉有限责任公司 | The automatic drop haze chimney of gas fired-boiler |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2127979Y (en) * | 1992-03-23 | 1993-03-10 | 东南大学 | Composite strengthen heat transmission type iron air pre-heater |
| JPH0735301A (en) * | 1993-05-20 | 1995-02-07 | Ebara Corp | Compact-type energy saving boiler |
| CN201155780Y (en) * | 2008-01-24 | 2008-11-26 | 张伟 | Boiler heating system capable of fully utilizing flue gas residual heat |
| CN101813322A (en) * | 2010-04-13 | 2010-08-25 | 山东北辰压力容器有限公司 | Air preheater for preventing corrosion of dew points |
| CN202074557U (en) * | 2011-05-31 | 2011-12-14 | 杭州美宝炉窑工程有限公司 | Jet type air preheater with heat exchange tubes having same inlet and outlet temperature difference |
| CN103672913A (en) * | 2013-05-17 | 2014-03-26 | 上海康恒环境股份有限公司 | Air distributing device and method for household rubbish incinerating furnace |
| CN203656965U (en) * | 2013-11-25 | 2014-06-18 | 洛阳安拓窑炉环保有限公司 | Air preheating device of kiln |
| CN104655673A (en) * | 2015-03-13 | 2015-05-27 | 东北电力大学 | Online diagnosis method for heat exchange performances of tri-sectional rotary type air preheater |
| CN105091019A (en) * | 2015-07-22 | 2015-11-25 | 洛阳三信石化设备有限公司 | Deep energy-saving air preheater |
| CN105987396A (en) * | 2015-02-02 | 2016-10-05 | 四川东能节能技术有限公司 | Sealing and recycling energy conservation system for regenerative air preheater |
| CN205783061U (en) * | 2016-05-25 | 2016-12-07 | 江西江联国际工程有限公司 | A kind of refuse incineration exhaust-heating boiler vertical air preheater |
-
2017
- 2017-02-24 CN CN201710104513.0A patent/CN106765289A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2127979Y (en) * | 1992-03-23 | 1993-03-10 | 东南大学 | Composite strengthen heat transmission type iron air pre-heater |
| JPH0735301A (en) * | 1993-05-20 | 1995-02-07 | Ebara Corp | Compact-type energy saving boiler |
| CN201155780Y (en) * | 2008-01-24 | 2008-11-26 | 张伟 | Boiler heating system capable of fully utilizing flue gas residual heat |
| CN101813322A (en) * | 2010-04-13 | 2010-08-25 | 山东北辰压力容器有限公司 | Air preheater for preventing corrosion of dew points |
| CN202074557U (en) * | 2011-05-31 | 2011-12-14 | 杭州美宝炉窑工程有限公司 | Jet type air preheater with heat exchange tubes having same inlet and outlet temperature difference |
| CN103672913A (en) * | 2013-05-17 | 2014-03-26 | 上海康恒环境股份有限公司 | Air distributing device and method for household rubbish incinerating furnace |
| CN203656965U (en) * | 2013-11-25 | 2014-06-18 | 洛阳安拓窑炉环保有限公司 | Air preheating device of kiln |
| CN105987396A (en) * | 2015-02-02 | 2016-10-05 | 四川东能节能技术有限公司 | Sealing and recycling energy conservation system for regenerative air preheater |
| CN104655673A (en) * | 2015-03-13 | 2015-05-27 | 东北电力大学 | Online diagnosis method for heat exchange performances of tri-sectional rotary type air preheater |
| CN105091019A (en) * | 2015-07-22 | 2015-11-25 | 洛阳三信石化设备有限公司 | Deep energy-saving air preheater |
| CN205783061U (en) * | 2016-05-25 | 2016-12-07 | 江西江联国际工程有限公司 | A kind of refuse incineration exhaust-heating boiler vertical air preheater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119905A (en) * | 2018-02-01 | 2018-06-05 | 营口绿源锅炉有限责任公司 | The automatic drop haze chimney of gas fired-boiler |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |