CN207113238U - A kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems - Google Patents
A kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems Download PDFInfo
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- CN207113238U CN207113238U CN201721033191.7U CN201721033191U CN207113238U CN 207113238 U CN207113238 U CN 207113238U CN 201721033191 U CN201721033191 U CN 201721033191U CN 207113238 U CN207113238 U CN 207113238U
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- boiler
- latent heat
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- wet type
- temperature receiver
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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
- 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
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Abstract
The utility model discloses a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems, system includes boiler body, economizer, wet type regenerator, moisture trap and Water spray subsystem, boiler body exhanst gas outlet is connected with economizer gas approach, economizer exhanst gas outlet is connected with wet type regenerator gas approach, wet type regenerator exhanst gas outlet and moisture trap inlet communication；Hydrophone separator upper end is provided with Water spray subsystem；Low-temperature receiver is used as by the use of heating water return and combustion air, heating water return recovery gas fired-boiler smoke evacuation sensible heat and part latent heat, combustion air further reclaims the latent heat in gas fired-boiler smoke evacuation, realizes that the depth of latent heat in gas fired-boiler flue gas is reclaimed and utilized using two-part heat exchange.
Description
Technical field
It the utility model is related to a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems.
Background technology
The main component of conventional fossil fuel is hydrocarbon, its burn main generation carbon dioxide and water.Natural gas
85-90% is methane in composition, and remaining is some hydrocarbons and a small amount of oxygen, nitrogen, carbon dioxide etc., and higher hydrogen-carbon ratio is led
Cause water vapour content in its combustion product higher.According to calculating, 1Nm3Combustion of natural gas about produces 1.55kg vapor, and vapor
The latent heat of vaporization it is big, this partial heat can account for 10% or so of natural gas low heat valve.
At this stage, as the adjustment of China urban energy structure, substantial amounts of coal heating boiler are substituted by gas fired-boiler.Often
The gas fired-boiler design exhaust gas temperature of rule is higher, and typically all more than 150 DEG C, exhaust gas temperature is higher during operation, up to 200 DEG C with
On, and the dew-point temperature of combustion of natural gas flue gas, close to 60 DEG C, the water vapour in flue gas is in superheat state, and ring is drained into flue gas
Border, so as to result in higher heat loss due to exhaust gas, latent heat is wasted.To improve the gas fired-boiler thermal efficiency, the natural of preciousness is saved
Gas resource, academia and industrial quarters have carried out more research to high-humidity gas fume recovery of latent heat using technology.In theory, as long as will combustion
Gas boiler exhaust gas temperature is reduced to below flue gas dew point, so that it may so that water vapor condensation in flue gas and latent heat is discharged, but this
Continuous cryogenic media is needed as low-temperature receiver.Conventional recovery of latent heat, as low-temperature receiver, utilizes wall-type heat exchange using heating water return
Device cools down wet flue gas, i.e., so-called " condensation gas boiler ".This method need to only increase a heat exchanger in steam generator system,
Simple system, but recovery of latent heat effect is by heating water return temperature limiting.Because the design temperature of return water of China's heating system is general
At 45-50 DEG C, and flue-gas temperature can not be reduced to below return water temperature, and relatively low heat transfer temperature difference make it that recovery of latent heat rate is very low.
In addition, somebody reclaims absorption or compression heat pump applied to Latent heat, this method is produced less than heating using heat pump
The low-temperature receiver of backwater, recovery of latent heat rate is improved, but cost and operating cost are higher.
Therefore, it is necessary to a kind of new Latent heat advanced recycling system is designed, to solve the above problems.
Utility model content
The utility model is in order to solve the above problems, it is proposed that a kind of double low-temperature receiver gas fired-boiler Latent heat depth recovery profits
With system, the utility model is applied to middle-size and small-size gas-heating boiler, has simple system flow, recovery of latent heat rate height, takes up an area
Area is few, plant maintenance is convenient, the advantage of low cost, while can also reduce gas fired-boiler by combustion air humid air combustion mode
Discharged nitrous oxides, increase environmental benefit.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems, including boiler body, economizer, wet type are returned
Hot device, moisture trap and Water spray subsystem, wherein：
Boiler body exhanst gas outlet is connected with economizer gas approach, economizer exhanst gas outlet and wet type regenerator flue gas
Import is connected, wet type regenerator exhanst gas outlet and moisture trap inlet communication；Hydrophone separator upper end is provided with Water spray
Subsystem；
It is latent by the use of heating water return and combustion air as double low-temperature receivers, heating water return recovery gas fired-boiler smoke evacuation sensible heat and part
Heat, combustion air further reclaim the latent heat in gas fired-boiler smoke evacuation, are realized in gas fired-boiler flue gas and dived using two-part heat exchange
The depth recovery and utilization of heat.
Further, the cooling water comes from heating system backwater, the admission port phase of economizer delivery port and boiler body
Connection, boiler water supply mouth and heating and supplying water pipeline communication, as heating and supplying water.
Further, condensed water booster pump, filter and regulating valve and wet type are passed through in the moisture trap bottom successively
The water spray system connection on regenerator top.
Further, the combustion air is delivered to wet type regenerator air intlet, and combustion air comes from environment, wet type
The outlet of regenerator humid air is connected with combustor combustion air inlet.
Further, the low-temperature receiver of the economizer is heating water return, and the low-temperature receiver of wet type regenerator is combustion air.
Preferably, the economizer is shell-and-tube heat exchanger, plate type heat exchanger or heat-pipe heat exchanger.
Preferably, the flow direction of flue gas and water is adverse current in the economizer.
Further, the overheat wet flue gas of the boiler body discharge cools in economizer, the vapor portion in flue gas
Divide and condense, the sensible heat and high temperature section latent heat in flue gas are transferred to the heating water return of boiler body to be entered.
Further, the saturation wet flue gas of the economizer discharge, which is input in the tube bank of wet type regenerator, further drops
Temperature, condensation latent heat is transferred to air and moisture film outside the tube bank of wet type regenerator by the water vapor condensation in wet flue gas, to provide water
Film evaporation institute calorific requirement, the depth for being achieved in flue gas low-temperature latent heat recycle.
Preferably, the wet type regenerator is tube shell type structure, and tube bank is arranged on wet type regenerator bottom, water spray system
Positioned at tube bank top, recirculated water is sprayed at tube bank outer surface from up to down.
Preferably, air and flow of flue gas direction are adverse current or distributary in the wet type regenerator.
Further, installed on the connecting line of the moisture trap delivery port and wet type regenerator water spraying device
Filter, to remove the particulate matter that condensed water traps from flue gas.
A kind of double low-temperature receiver gas fired-boiler Latent heat depth recoverying and utilizing methods, by the use of heating water return and combustion air as
Double low-temperature receivers, heating water return recovery gas fired-boiler smoke evacuation sensible heat and small part latent heat, combustion air further reclaim gas-fired boiler fire grate
Most of latent heat in cigarette, realize that the depth of latent heat in gas fired-boiler flue gas is reclaimed and utilized using two-part heat exchange, improve cigarette
Gas recovery of latent heat utilization rate, the gas fired-boiler thermal efficiency is improved to greatest extent.
Compared with prior art, the beneficial effects of the utility model are：
1) two kinds of low-temperature receivers of heating water return and combustion air, heating water return recovery gas fired-boiler smoke evacuation sensible heat and small part are used
Latent heat, combustion air further reclaim most of latent heat in gas fired-boiler smoke evacuation, and gas fired-boiler is realized using two-part heat exchange
The depth recovery and utilization of latent heat, significantly improve Latent heat recovery utilization rate, so as to improve gas-fired boiler to greatest extent in flue gas
Furnace thermal efficiency, reduce gas consumption；
2) flue gas low-temperature section recovery of latent heat uses wet type regenerator, first, solves high humility cigarette by humidifying combustion air
Exchange heat load mismatch problem between gas and low humidity combustion air, while can also effectively improve the coefficient of heat transfer between the two, enters
And reduce heat exchange area and heat-exchanger rig volume；Secondly, combustion air, which humidifies, causes flue gas dew point to improve, and realizes low temperature latent heat
Grade lifting, be advantageous to improve the recovery of latent heat rate of economizer at a temperature of high heating water return；Again, combustion air humidity is improved
Reduce oxygen concentration, combustion of natural gas process Nox generations can be reduced, so as to effectively reduce gas fired-boiler discharged nitrous oxides；
3) system flow is simple, compact-sized, device integration is high, easy to maintenance, can be disposed at boiler body so as to not
Increase floor space, reduce initial cost.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the structural representation of the utility model embodiment；
Wherein, 1, combustor；2nd, boiler body；3rd, economizer；4th, wet type regenerator；5th, spray equipment；6th, restrain；7th, gas
Separator；8th, condensed water booster pump；9th, filter；10th, regulating valve；11st, heating water return；12nd, high temperature heating backwater；13rd, supply
It is warm to supply water；14th, combustion air；15th, wet combustion air；16th, high temperature wet flue gas；17th, medium temperature saturation wet flue gas；18th, low temperature saturation
Flue gas.
Embodiment：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
In the utility model, term as " on ", " under ", "left", "right", "front", "rear", " vertical ", " level ",
The orientation or position relationship of the instructions such as " side ", " bottom " are based on orientation shown in the drawings or position relationship, only to facilitate chatting
The relative stated each part of the utility model or component structure relation and determined, not refer in particular in the utility model either component or
Element, it is impossible to be interpreted as to limitation of the present utility model.
In the utility model, term such as " affixed ", " connected ", " connection " should be interpreted broadly, and expression can be fixed
Connect or be integrally connected or be detachably connected；Can be joined directly together, the indirect phase of intermediary can also be passed through
Even.Related scientific research or technical staff for this area, it can determine above-mentioned term in the utility model as the case may be
Concrete meaning, it is impossible to be interpreted as to limitation of the present utility model.
As background technology is introduced, flue-gas temperature in the prior art be present can not be reduced to below return water temperature, compared with
Low heat transfer temperature difference make it that recovery of latent heat rate is very low, or needs cost and the higher deficiency of operating cost, in order to solve as above
Technical problem, present applicant proposes a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems.The system is applied to
Middle-size and small-size gas-heating boiler, there is simple system flow, recovery of latent heat rate height, floor space is few, plant maintenance is convenient, cost
Low advantage, while gas fired-boiler discharged nitrous oxides can be also reduced by combustion air humid air combustion mode, increase environmental protection effect
Benefit.
As shown in figure 1, a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems of the utility model, gas-fired boiler
Furnace body 2 uses horizontal type structure, and combustor 1 is connected to boiler body front end, boiler back end ductwork successively with economizer 3 and wet type
Regenerator 4 connects.Economizer is solution-air plate type heat exchanger, and its gas side-entrance access is by the high temperature wet flue gas 16 of boiler discharge, liquid
The outside heating water return 11 of side-entrance access, high temperature wet flue gas 16 are medium temperature saturation wet flue gas 17 from saving coal in economizer cooling and dehumidification
Device gas side outlet is discharged, and the sensible heat and fraction latent heat of flue gas are recycled for heating backwater 11, and the heating after heating is returned
Water 12 is still heated to supply water temperature after being discharged from economizer liquid side outlet into gas fired-boiler body 2, is admitted to confession afterwards
Heating coil net.
Medium temperature saturation wet flue gas 17 is entered in heat exchanger tube by the gas approach of wet type regenerator 4, by further cooling and dehumidification
To low temperature saturated flue gas 18, discharged from exhanst gas outlet.For the moisture of low temperature saturated flue gas and condensation is separated, returned in wet type
Hot device exhanst gas outlet sets gas-liquid separator 7, and condensed water relies on gravitational settling to gas-liquid separator bottom, and through recirculated water subsystem
System delivers to the water spray system 5 on wet type regenerator top；Low temperature saturated flue gas 18 is arranged by the gas vent at the top of gas-liquid separator
Go out to environment.Circulation water subsystem includes：Condensed water booster pump 8, filter 9 and regulating valve 10.Wherein, condensed water booster pump 8
The water out of one end connection moisture trap bottom, the other end connect filter 9 to remove the particulate matter trapped from flue gas, mistake
Filter outlets are connected with regulating valve 10.Flue gas condensing water is uniformly sprayed to 6 outer surface shapes of tube bank by water spray system 5 from top to bottom
Into liquid film, combustion air is entered by the air intlet of the bottom of wet type regenerator 4, flows through heated add from tube bank is outside from bottom to top
Wet is wet combustion air 15, and the depth for being achieved in latent heat in medium temperature saturated flue gas recycles.
As different embodiments, economizer is shell-and-tube heat exchanger, plate type heat exchanger or heat-pipe heat exchanger.
As exemplary embodiment, the flow direction of flue gas and water is adverse current in economizer.
As exemplary embodiment, wet type regenerator is tube shell type structure, and tube bank is arranged on wet type regenerator bottom, water spray
For shower device positioned at tube bank top, recirculated water is sprayed at tube bank outer surface from up to down.
As different embodiments, air and flow of flue gas direction are adverse current or distributary in wet type regenerator.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (10)
1. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems, it is characterized in that：Including boiler body, save coal
Device, wet type regenerator, moisture trap and Water spray subsystem, wherein：
Boiler body exhanst gas outlet is connected with economizer gas approach, economizer exhanst gas outlet and wet type regenerator gas approach
It is connected, wet type regenerator exhanst gas outlet and moisture trap inlet communication；Hydrophone separator upper end is provided with Water spray subsystem
System；
By the use of heating water return and combustion air as double low-temperature receivers, heating water return reclaims gas fired-boiler smoke evacuation sensible heat and part latent heat,
Combustion air further reclaims the latent heat in gas fired-boiler smoke evacuation, and latent heat in gas fired-boiler flue gas is realized using two-part heat exchange
Depth is reclaimed and utilized.
2. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Institute
State heating system backwater and cooling water is provided, economizer delivery port is connected with the admission port of boiler body, and boiler water supply mouth is with supplying
Warm water supply line connection, as heating and supplying water.
3. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Institute
Moisture trap bottom is stated to fill by condensed water booster pump, filter and regulating valve and the Water spray on wet type regenerator top successively
Put connection.
4. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Institute
State combustion air and be delivered to wet type regenerator air intlet, combustion air comes from environment, the outlet of wet type regenerator humid air with
Combustor combustion air inlet is connected.
5. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Institute
The low-temperature receiver for stating economizer is heating water return, and the low-temperature receiver of wet type regenerator is combustion air.
6. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Institute
State the saturation wet flue gas that economizer is discharged and be input in the tube bank of wet type regenerator and further cool, the vapor in wet flue gas
Condensation latent heat is transferred to air and moisture film outside the tube bank of wet type regenerator by condensation, to provide water film evaporation institute calorific requirement, thus
Realize that the depth of flue gas low-temperature latent heat recycles.
7. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Institute
It is tube shell type structure to state wet type regenerator, and tube bank is arranged on wet type regenerator bottom, and water spray system is positioned at tube bank top, circulation
Water is sprayed at tube bank outer surface from up to down.
8. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Institute
It is adverse current or distributary to state air and flow of flue gas direction in wet type regenerator.
9. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：Peace
Fixed filter, to remove the particulate matter that condensed water traps from flue gas.
10. a kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems as claimed in claim 1, it is characterized in that：
The overheat wet flue gas of the boiler body discharge cools in economizer, the water vapor portion condensation in flue gas, aobvious in flue gas
Heat and high temperature section latent heat are transferred to the heating water return of boiler body to be entered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721033191.7U CN207113238U (en) | 2017-08-17 | 2017-08-17 | A kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721033191.7U CN207113238U (en) | 2017-08-17 | 2017-08-17 | A kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems |
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| Publication Number | Publication Date |
|---|---|
| CN207113238U true CN207113238U (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721033191.7U Expired - Fee Related CN207113238U (en) | 2017-08-17 | 2017-08-17 | A kind of double low-temperature receiver gas fired-boiler Latent heat advanced recycling systems |
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| CN (1) | CN207113238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109455898A (en) * | 2018-12-21 | 2019-03-12 | 江苏格陵兰传热科技有限公司 | Sludge drying system based on hot industry exhaust gas |
| CN112556186A (en) * | 2020-12-08 | 2021-03-26 | 山东大学 | Device and method for deeply recycling waste heat of gas heating boiler |
-
2017
- 2017-08-17 CN CN201721033191.7U patent/CN207113238U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109455898A (en) * | 2018-12-21 | 2019-03-12 | 江苏格陵兰传热科技有限公司 | Sludge drying system based on hot industry exhaust gas |
| CN112556186A (en) * | 2020-12-08 | 2021-03-26 | 山东大学 | Device and method for deeply recycling waste heat of gas heating boiler |
| CN112556186B (en) * | 2020-12-08 | 2022-02-08 | 山东大学 | Device and method for deeply recycling waste heat of gas heating boiler |
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