CN208687994U - Split type gas thermal power plant unit - Google Patents
Split type gas thermal power plant unit Download PDFInfo
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- CN208687994U CN208687994U CN201821371411.1U CN201821371411U CN208687994U CN 208687994 U CN208687994 U CN 208687994U CN 201821371411 U CN201821371411 U CN 201821371411U CN 208687994 U CN208687994 U CN 208687994U
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- boiler
- heat exchanger
- flue gas
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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
- 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]
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Abstract
The utility model discloses a kind of Split type gas thermal power plant units, including boiler furnace (1) and smoke exhaust pipe (2), it is characterized by: being provided with flue gas condensing heat exchanger (3) between the import of the smoke outlet and smoke exhaust pipe (2) of the boiler furnace (1) or in smoke exhaust pipe (2), the high-temperature flue gas of boiler furnace (1) discharge is discharged after flue gas condensing heat exchanger (3) heat exchange condensation through smoke exhaust pipe (2).The Split type gas thermal power plant unit of the utility model is due to the combustion position that improves boiler feed water temperature, reduce exhaust gas temperature, improve boiler, therefore the generation and discharge of nitrogen oxides in combustion process can be largely reduced, as gas fired-boiler or other combustion apparatus install the increase of flue gas condensing heat exchanger quantity additional, it will persistently improve atmosphere quality.
Description
Technical field
The utility model relates to boiler afterheat recycling field, specifically a kind of heat that can recycle high-temperature flue gas
It measures and provides the Split type gas thermal power plant unit of preheating to boiler replenishing water.
Background technique
In the latest 20 years, huge variation has occurred in world energy sources structure, due to the use of bunker coal, makes to earth environment
At huge environmental disaster, energy-saving and emission-reduction become the central topic that China or even world energy sources work, with new energy
Exploitation use, coal has been gradually backed out domestic heating field, and petroleum, natural gas, electric energy have become domestic heating
Main energy sources.
Natural gas price raises again；Energy conservation is by advocating steering order；Energy consumption cost increasingly swallows enterprise profit；Enterprise
Industry energy conservation, it is imperative, it is extremely urgent.It is the outstanding feature for evaluating and testing enterprise operation performance as the boiler energy consumption of energy main body.
The either seasonal operation of cities and towns central heating or the continuous operation of enterprise production process, to energy consumption cost control
At the time of having arrived very urgent, because high energy consumption is all swallowing Operating profit daily.Meanwhile the high pollution that high energy consumption generates,
In the environment for destroying us and depending on for existence, environmental protection needs the emission reduction that lowers consumption, and important approach is exactly energy conservation.
1, for combustion gas (oil) boiler, waste heat recycling is most effectual way energy-saving, that emission reduction is environmentally friendly.Common combustion gas
Boiler, smoke temperature exhaust temperature is at 160-260 DEG C.A large amount of sensible heat and latent heat are discharged into atmosphere, not only break up ecology, and
High energy consumption is caused, the thermal efficiency of boiler is reduced, improves operating cost.
2, contain a large amount of protiums in natural gas, generate a large amount of water vapours by burning.Every 1NM3It can after combustion of natural gas
To generate 1.55KG water vapour, there is the considerable latent heat of vaporization, about 3700KJ accounts for the 10% of the low heat valve of natural gas
Left and right.When exhaust gas temperature is higher, water vapour cannot condense releasing heat, and with flue gas emission, heat is wasted.Meanwhile high temperature
Flue gas also takes away a large amount of sensible heats, is formed together biggish flue gas loss.
3, combustion exhaust gas is one of non-condensation gas boiler and the main heat loss of other combustion apparatus, the row of recycling
Cigarette waste heat, reduction exhaust gas temperature are one of important channels for improving boiler thermal efficiency.After mixing with air burning due to natural gas
The water vapour for accounting for about boiler exhaust gas total amount 28% is generated, to prevent corrosion of the water recovery to flue and equipment, existing boiler mark
Alignment request gas fired-boiler exhaust gas temperature necessarily is greater than flue gas dew point, to guarantee that water vapour is non-condensing.Therefore, the smoke evacuation of gas fired-boiler
Temperature is higher, and the considerable latent heat of vaporization and physical sensible heat have not only been taken away in high-temperature flue gas, forms nearly 15% heat loss, and
Also contain a certain number of nitrogen oxides (NOX) and sulfur dioxide (SO2) etc. contaminants atmospheric environment.
Summary of the invention
The purpose of this utility model is in view of the problems of the existing technology, to provide a kind of heat that can recycle high-temperature flue gas
It measures and provides the Split type gas thermal power plant unit of preheating to boiler replenishing water.
The purpose of this utility model solves by the following technical programs:
A kind of Split type gas thermal power plant unit, including boiler furnace and smoke exhaust pipe, it is characterised in that: the boiler furnace
Flue gas condensing heat exchanger, the height of boiler furnace discharge are provided between smoke outlet and the import of smoke exhaust pipe or in smoke exhaust pipe
Warm flue gas is discharged after the heat exchange condensation of flue gas condensing heat exchanger through smoke exhaust pipe.
The cooling medium entrance of the flue gas condensing heat exchanger is equipped with water inlet pipe or the water inlet pipe directly and boiler furnace
Water supplying pipe be connected, the outlet of the cooling medium of flue gas condensing heat exchanger passes through the furnace body admission port phase of economizer bank and boiler furnace
Connection.
The economizer bank is equipped with heat preservation regulating tank.
The top of boiler furnace is arranged in the outlet of the economizer bank, and the furnace body water outlet of boiler furnace is located at Boiler Furnace
The bottom of body is simultaneously connected with outlet pipe.
The flue gas condensing heat exchanger uses board-like stainless heat exchanger.
The top of the boiler furnace is equipped with burner, and the backpulsing combustion flame that burner sprays downwards carries out boiler
Heating.
The utility model has the following advantages compared with prior art:
The utility model is utilized by the way that flue gas condensing heat exchanger to be directly mounted in the smoke outlet or by-pass flue of boiler
The efficient heat-exchanging pipe in heat exchanger is washed away in smoke evacuation, heats atmospheric circulating flows in heat exchanger tube soft water, return water, makes it from room temperature
It is increased to 50 DEG C -90 DEG C enter back into deaeration pump, directly feed boiler replenishing water, directly export hot water to heating system, reaches reduction
Deoxygenation steam, the purpose improve boiler feed temperature, shorten high fire burning pressure rising time, reducing fuel consumption；Through overheating
Exhaust gas temperature after exchange will be generally reduced 80 DEG C -150 DEG C, and when smoke temperature is down to dew point, flue gas starts to condense and generate
Condensed water, the pollutants such as sulfur dioxide generated in combustion process are then partly dissolved deposition, in company with condensed water by the special of heat exchanger
If discharge outlet is discharged, it can be used as middle water after the neutralized processing of the condensed water of discharge and recycle；By improving boiler feed water temperature, drop
Low exhaust gas temperature, the combustion position for improving boiler, therefore the generation and discharge of nitrogen oxides in combustion process can be largely reduced, with
Gas fired-boiler or other combustion apparatus install the increase of flue gas condensing heat exchanger quantity additional, it will persistently improve atmospheric environment matter
Amount.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model.
Wherein: 1-boiler furnace；2-smoke exhaust pipes；3-flue gas condensing heat exchangers；4-water inlet pipes；5-outlet pipes；6—
Economizer bank；7-burners.
Specific embodiment
The utility model is further described with embodiment with reference to the accompanying drawing.
A kind of Split type gas thermal power plant unit as shown in Figure 1:, including boiler furnace 1 and smoke exhaust pipe 2, the top of boiler furnace 1
Portion is equipped with burner 7, and the backpulsing combustion flame that burner 7 sprays downwards heats boiler；In the smoke evacuation of boiler furnace 1
Flue gas condensing heat exchanger 3, the height that boiler furnace 1 is discharged are provided between mouth and the import of smoke exhaust pipe 2 or in smoke exhaust pipe 2
Warm flue gas is discharged after the heat exchange condensation of flue gas condensing heat exchanger 3 through smoke exhaust pipe 2.The cooling medium of the flue gas condensing heat exchanger 3 enters
Mouth is equipped with water inlet pipe 4 or the water inlet pipe 4 is directly connected with the water supplying pipe of boiler furnace 1, the cooling of flue gas condensing heat exchanger 3
Media outlet is connected by economizer bank 6 with the furnace body admission port of boiler furnace 1；The outlet of economizer bank 6 is arranged in boiler furnace 1
Top and heat preservation regulating tank is equipped on economizer bank 6, no matter boiler in operation whether moisturizing, in flue gas condensing heat exchanger
Always having soft water to flow in atmospheric circulating recovery waste heat and can store heat, eliminate the existing interruption heat exchange of conventional economizer,
The security risks such as cavitation, boiling, bearing operation are also easy to produce, solve the problems such as its interval recovery waste heat, low efficiency；The Boiler Furnace
The furnace body water outlet of body 1 is located at the bottom of boiler furnace 1 and is connected with outlet pipe 5.
In order to reduce gas fired-boiler heat loss, improve fuel availability, energy saving, pass through flue gas condensing heat exchanger 3
Exhaust gas temperature is dropped to sufficiently low level, will condense in flue gas in the water vapour of superheat state, be handed over by heat by setting
The latent heat that the physical sensible heat and water recovery changed in absorption smoke evacuation are discharged is used, based on the basis of fuel Lower heat value
The boiler thermal efficiency of calculation can reach or more than 100%, and such boiler for having installed tail portion heat exchanger additional is known as condenser boiler.
In the smoke evacuation system of general gas (fuel oil) boiler, flue gas condensing heat exchanger 3 is installed additional, it can effective recovered flue gas
In sensible heat and latent heat (condensing hot air furnace).Flue gas condensing heat exchanger 3 promotes boiler recirculated water while reducing exhaust gas temperature
The temperature of (moisturizing) makes boiler be in high temperature water running always, and the saving rate of fuel is up to 8%-15%.Gasification latent heat obtains cold
After condensate recycling, by simple process, it can be used as middle water and use, be the new energy as obtained from energy conservation, economy is considerable.
Condenser boiler is divided into two classes by cooling medium difference: water cooling and air-cooled.It adopts and is water-cooled the common form of flue gas
There are two types of again: monoblock type and separate type.Flue gas heat-exchange unit is placed in boiler body and is integrally formed therewith by the former, and the latter is i.e. non-
On the basis of condensing conventional boiler, do not change the original body construction of boiler, smoke evacuation export installation flue gas condensing heat exchanger 3 or
Flue gas condensing heat exchanger 3 is installed in boiler back end ductwork by person, and boiler feedwater enters back into pot after flue gas condensing heat exchanger 3
Furnace makes it be increased to 50 DEG C -80 DEG C again from original room temperature (such as 20 DEG C or so) using the water supply of boiler exhaust gas heating boiler
Into drum, to realize the reduction of gas consumption.
The reducing energy consumption of combustion gas (oil) boiler, it is simple and easy, do not change the main and auxiliary machine equipment of boiler system and vapour, water circulation
System is not related to the use, operating provisions of pressure vessel etc..Since 3 occupied space of flue gas condensing heat exchanger is just small, installation
It position can adaptation to local conditions.Energy-conserving product saves money and is only absolute principle.3 small investment of flue gas condensing heat exchanger, gain quick return, is used for a long time,
A large amount of new returns can be obtained from operating cost.On-condensing gas fired-boiler configuration flue gas condensing heat exchanger 3 becomes
The condenser boiler of economic, practical external heat exchanger；Meanwhile it being also suitable the waste heat recycling of other gas-fired equipments, it fully meets
The terms of tender of the energy use check-up standard of current energy consumption equipment and new user to boiler product.
In use, heat-exchange system water side uses continuous cycle heat exchange, normal pressure operational mode, test pressure: 1.2Mpa, fortune
Row pressure: < 0.2MPa.Above-mentioned flue gas condensing heat exchanger (3) uses board-like stainless heat exchanger.Shared space is current
Lesser one kind in various heat exchangers, plate-type condenser occupied area only has shell-and-tube heat exchanger under same working condition
, efficient heat transfer, less scaling and heat recovery efficiency are high.Due to heat transfer coefficient height, flow-rate ratio excellent is plus complete
Reverse flow, heat transfer temperature difference can be selected very low, therefore be very suitable for the recycling of low level energy heat.Corrosion resistance is strong,
The significant plate of mechanical performance uses 304 stainless steels as welding material, shell using import 316L stainless steel, cupro-nickel, to natural
The flue gas and condensed water that gas generates are anticorrosive more than 10 years.Heat loss is small, runner is wide, crushing is small, high-efficient, compact-sized, body
Small and exquisite, the plate-type condenser external surface area very little of product, thus heat loss also very little and flexible structure, are easily installed segmentation shell knot
Structure is readily cleaned, safeguards, increase-volume, also has stronger self-cleaning ability.Entirety can be using intelligent operation control, setting
Independent electrical display, control system, it is non-interference with boiler electric control system, it can automatically track boiler operatiopn, it is real
When show and monitoring heat-exchanging state, can be adjusted at any time and direct feel waste heat recovering effect.Can be direct-connected, and can be using bypass
Mode constitute independent circulation heat-exchange system, become two sets of moisturizing systems of boiler jointly with the original water charging system of boiler
System, boiler can will not cause boiler shutdown because of water supply system failure by switching the mutual switching system of valve in operation.
By the long-play on Modular gas hot-water boiler, 12 DEG C of return water temperature can be promoted, fractional energy savings is 10% or more, energy conservation
Effect is very significant.
Energy conservation and environmental protection benefit: natural gas Lower heat value 8500kcal, standard coal coefficient 12.14, ton mark coal CO are pressed2Discharge amount
0.58 ton, run in boiler year 6000 hours and calculate: boiler one ton of steam of output per hour, theoretical air consumption 69.15Nm3；If
Boiler thermal efficiency is 80%, then actual air consumption is 86.4Nm3/ h, if boiler thermal efficiency is improved 8%, the practical gas consumption of boiler
Amount is reduced to 78.6Nm3/ h, annual natural gas of saving is 4.68 ten thousand Nm3, convert into mark 56.79 tons of coal, CO2Emission reduction be 32.93 tons,
Waste heat emission reduction is 397,800,000 kcal.The whole nation is in the every 3 steaming ton that, there are about 500,000, is averaged with gas fuel boiler at present, if often
Platform boiler installs energy-saving appliance additional, by run in every boiler year 300 days, operation daily 10 hours, energy-saving appliance fractional energy savings be based on 7%
It calculates, 252 billion cubic meter of natural gas can be saved every year, social benefit is very significant！
The utility model is utilized by the way that flue gas condensing heat exchanger to be directly mounted in the smoke outlet or by-pass flue of boiler
The efficient heat-exchanging pipe in heat exchanger is washed away in smoke evacuation, heats atmospheric circulating flows in heat exchanger tube soft water, return water, makes it from room temperature
It is increased to 50 DEG C -90 DEG C enter back into deaeration pump, directly feed boiler replenishing water, directly export hot water to heating system, reaches reduction
Deoxygenation steam, the purpose improve boiler feed temperature, shorten high fire burning pressure rising time, reducing fuel consumption；Through overheating
Exhaust gas temperature after exchange will be generally reduced 80 DEG C -150 DEG C, and when smoke temperature is down to dew point, flue gas starts to condense and generate
Condensed water, the pollutants such as sulfur dioxide generated in combustion process are then partly dissolved deposition, in company with condensed water by the special of heat exchanger
If discharge outlet is discharged, it can be used as middle water after the neutralized processing of the condensed water of discharge and recycle；By improving boiler feed water temperature, drop
Low exhaust gas temperature, the combustion position for improving boiler, therefore the generation and discharge of nitrogen oxides in combustion process can be largely reduced, with
Gas fired-boiler or other combustion apparatus install the increase of flue gas condensing heat exchanger quantity additional, it will persistently improve atmospheric environment matter
Amount.
Above embodiments are only to illustrate the technical idea of the utility model, and the protection model of the utility model cannot be limited with this
Enclose, it is all according to the utility model proposes technical idea, any changes made on the basis of the technical scheme each falls within this reality
Within the scope of novel protected；The technology that the utility model is not directed to can be realized by the prior art.
Claims (6)
1. a kind of Split type gas thermal power plant unit, including boiler furnace (1) and smoke exhaust pipe (2), it is characterised in that: the Boiler Furnace
Flue gas condensing heat exchanger (3) are provided between the import of the smoke outlet and smoke exhaust pipe (2) of body (1) or in smoke exhaust pipe (2),
The high-temperature flue gas of boiler furnace (1) discharge is discharged after flue gas condensing heat exchanger (3) heat exchange condensation through smoke exhaust pipe (2).
2. Split type gas thermal power plant unit according to claim 1, it is characterised in that: the flue gas condensing heat exchanger (3)
Cooling medium entrance be equipped with water inlet pipe (4) or the water inlet pipe (4) and be directly connected with the water supplying pipe of boiler furnace (1), cigarette
The cooling medium outlet of gas condensing heat exchanger (3) is connected by economizer bank (6) with the furnace body admission port of boiler furnace (1).
3. Split type gas thermal power plant unit according to claim 2, it is characterised in that: the economizer bank (6) is equipped with
Keep the temperature regulating tank.
4. Split type gas thermal power plant unit according to claim 2, it is characterised in that: the outlet of the economizer bank (6) is set
Set the top in boiler furnace (1), and the furnace body water outlet of boiler furnace (1) be located at boiler furnace (1) bottom and with water outlet
Pipe (5) is connected.
5. Split type gas thermal power plant unit according to claim 1, it is characterised in that: the flue gas condensing heat exchanger
(3) board-like stainless heat exchanger is used.
6. Split type gas thermal power plant unit according to claim 1, it is characterised in that: the top of the boiler furnace (1)
Equipped with burner (7), the backpulsing combustion flame that burner (7) sprays downwards heats boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821371411.1U CN208687994U (en) | 2018-08-24 | 2018-08-24 | Split type gas thermal power plant unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821371411.1U CN208687994U (en) | 2018-08-24 | 2018-08-24 | Split type gas thermal power plant unit |
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| Publication Number | Publication Date |
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| CN208687994U true CN208687994U (en) | 2019-04-02 |
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ID=65886542
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793187A (en) * | 2019-12-09 | 2020-02-14 | 珠海格力电器股份有限公司 | Gas water heating system and control method thereof |
| CN110906299A (en) * | 2019-12-05 | 2020-03-24 | 东莞市新伟节能环保技术有限公司 | Heating system applied to washing industry |
-
2018
- 2018-08-24 CN CN201821371411.1U patent/CN208687994U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906299A (en) * | 2019-12-05 | 2020-03-24 | 东莞市新伟节能环保技术有限公司 | Heating system applied to washing industry |
| CN110793187A (en) * | 2019-12-09 | 2020-02-14 | 珠海格力电器股份有限公司 | Gas water heating system and control method thereof |
| CN110793187B (en) * | 2019-12-09 | 2023-10-31 | 珠海格力电器股份有限公司 | Gas water heating system and control method thereof |
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