CN205807470U - A kind of gas fired-boiler flue gas waste heat recovery apparatus - Google Patents
A kind of gas fired-boiler flue gas waste heat recovery apparatus Download PDFInfo
- Publication number
- CN205807470U CN205807470U CN201620651427.2U CN201620651427U CN205807470U CN 205807470 U CN205807470 U CN 205807470U CN 201620651427 U CN201620651427 U CN 201620651427U CN 205807470 U CN205807470 U CN 205807470U
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- heat
- boiler
- condenser
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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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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a kind of gas fired-boiler flue gas waste heat recovery apparatus, including the gas fired-boiler being sequentially connected with, heat exchanger, economizer, condenser, air source heat pump and chimney, the heat supply water of air source heat pump is communicated to heat user by heat supplying pipeline；It is provided with bypass line between described condenser and chimney；Arranging blow-off pipe bottom described condenser, blow-off pipe is connected with condensed water storage tank, and condensed water storage tank passes through pipeline connection to neutralization reactor；Pipeline minimum point between described gas fired-boiler and heat exchanger arranges drain pipe, drain pipe communicated drainage groove, and rhone is connected with condensed water storage tank by pipeline.Sensible heat in heat smoke and latent heat are fully effectively used by this utility model, significantly improve fume afterheat utilization rate, meet the requirement that cleaning produces, reach energy-conservation, lower consumption, reduce discharging multipurpose.
Description
Technical field
This utility model relates to a kind of waste-heat recovery device, is specifically related to a kind of gas fired-boiler flue gas waste heat recovery apparatus.
Background technology
Boiler is function device indispensable in central heating industry, is one of most important power resources such as industrial, civilian.
In recent years, along with environmental issue is day by day serious, the gas fired-boiler with natural gas as the energy gradually instead of coal-burning boiler, obtains
It is widely applied.
The exhaust gas temperature of gas fired-boiler is generally up to 120～250 DEG C, containing 8～the sensible heat of 15% and 11% in flue gas
The latent heat of vaporization.If these heats are directly discharged in air, not only waste a large amount of heat energy, and air has been brought
Pollute, cause ambient temperature to raise, exacerbate the tropical island effect in city.Therefore, how the flue gas of gas fired-boiler is reclaimed
Utilize, reduce flue gas loss, become one of subject matter of technical staff's research.The most ripe flue gas waste heat recovery technology
Exhaust gas temperature more than 40 DEG C, still have Lowlevel thermal energy to be difficult to recycle.
Utility model content
For solving the problems referred to above that prior art exists, the purpose of this utility model is that providing a kind of reclaims the thermal efficiency
Height, device structure are simple, the gas fired-boiler flue gas waste heat recovery apparatus of clean environment firendly.
For solving above-mentioned technical problem, this utility model be the technical scheme is that
A kind of gas fired-boiler flue gas waste heat recovery apparatus, including the gas fired-boiler being sequentially connected with, heat exchanger, economizer, cold
Condenser, air source heat pump and chimney；The exhaust opening of gas fired-boiler connects the shell side inlet of heat exchanger, the shell of heat exchanger by flue
Journey outlet economizer entrance, the tube-side inlet of heat exchanger is connected with cold air input channel, and tube side outlet is empty by heat
Gas output channel connects gas fired-boiler；Economizer exit connects condenser inlet by pipeline, and condensator outlet connects air source
The evaporator inlet of heat pump, the heat exchange tube inlet of condenser connects cold water inlet pipe road, and hot water delivery pipe is passed through in heat exchanger tube outlet
Road is connected with hot water storage tank；The evaporator outlet of described air source heat pump connects chimney, and the heat supply water of air source heat pump passes through
Heat supplying pipeline is communicated to heat user, connects air source heat pump through backheat pipeline again；It is additionally provided with between described condenser and chimney
Bypass line；
Arranging blow-off pipe bottom described condenser, blow-off pipe is connected with condensed water storage tank, and condensed water storage tank is by pipeline even
Pass to neutralization reactor；Pipeline minimum point between described gas fired-boiler and heat exchanger arranges drain pipe, drain pipe communicated drainage
Groove, rhone is connected with condensed water storage tank by pipeline.
Further improvement of the utility model is: be provided with shut-off valve on described bypass line；Set on described drain pipe
Put drain valve, the pipeline between rhone and condensed water storage tank arranges draining pump；On described blow-off pipe, blowoff valve is set.
Further improvement of the utility model is: described heat exchanger is dividing wall type heat exchanger, and economizer is fin tubular type
Economizer, condenser is Fin-tube Condenser.
Further improvement of the utility model is: the heat exchange tube inlet of described economizer is through oxygen-eliminating device and condenser water tank
Being connected, heat exchanger tube outlet is connected with gas fired-boiler by pipeline.
Further improvement of the utility model is: in the funnel-form being easy to condensation water collection bottom described condenser.
Further improvement of the utility model is: be provided with on described backheat pipeline for driving heat supply water to flow
Circulating pump.
Further improvement of the utility model is: described circulating pump is two, and employing is arranged in parallel.
Owing to have employed technique scheme, the technological progress that this utility model obtains is:
This utility model provides a kind of gas fired-boiler flue gas waste heat recovery apparatus, by four steps, by flue-gas temperature
Gradually reducing to lower temperature, sensible heat and latent heat in heat smoke are fully effectively used, and significantly improve fume afterheat
Utilization rate, the flue-gas temperature of discharge is low, environment will not be brought harm；Meanwhile, in flue gas, the sour gas of the overwhelming majority is changing
Thermal process is got off with water vapor condensation, water circulation use in conduct after collection, neutralisation treatment, decrease and arrange outside sour gas
Pollution to air, does not has sewage discharge yet, reduces environmental protection pressure, and the timely of acid condensate water exports, it is to avoid to setting
For causing corrosion, extend service life of equipment, meet the requirement that cleaning produces, reached energy-conservation, lower consumption, reduced discharging multiple mesh
's.
During heat smoke progressively recovery waste heat, it is simultaneously achieved: the 1. air preheat to entrance gas fired-boiler, improves
Ignition temperature in boiler, makes natural gas be fully burned, adds quantity of heat production, decrease carbon monoxide etc. simultaneously and do not fill
The generation of divided combustion product, reduces environmental protection pressure；2. the deoxygenated water from condenser water tank is heated, reduce deoxygenated water and enter
Enter the heat absorption in boiler, improve pot in-furnace temperature, it is ensured that combustion efficiency；3. a large amount of hot water of output, meets other water systems
Demand；4. the part as air source heat pump thermal source heats heat supply water, reduces the power consumption of air source heat pump, fully returns
Receive fume afterheat, energy-saving and cost-reducing.
Described heat exchanger is dividing wall type heat exchanger, and economizer is fin tubular type economizer, and condenser is finned tube type condensing
Device, heat-transfer effect is good, and waste heat recovery rate is high.
Accompanying drawing explanation
Fig. 1 is connection diagram of the present utility model；
In figure, arrow is the flow direction of heat supply water；
Wherein, 1, gas fired-boiler, 2, heat exchanger, 21, cold air input channel, 22, hot-air output channel, 3, save coal
Device, 31, condenser water tank, 32, oxygen-eliminating device, 4, condenser, 41, cold water inlet pipe road, 42, hot water delivery pipe road, 43, hot water stores up
Tank, 44, condensed water storage tank, 45, neutralization reactor, 46, middle water circulation utilization system, 47, blow-off pipe, 48, blowoff valve, 5, air
Source heat pump, 51, bypass line, 52, shut-off valve, 6, chimney, 7, heat user, 71, circulating pump, 72, heat supplying pipeline, 73, product heat cal rod
Road, 8, drain pipe, 81, rhone, 82, draining pump, 83, drain valve.
Detailed description of the invention
Describe this utility model below with reference to the accompanying drawings in detail.
A kind of gas fired-boiler flue gas waste heat recovery apparatus, as it is shown in figure 1, include gas fired-boiler 1, the heat exchanger being sequentially connected with
2, economizer 3, condenser 4, air source heat pump 5 and chimney 6.The exhaust opening of gas fired-boiler 1 connects the shell of heat exchanger 2 by flue
Journey entrance, the shell-side outlet connection economizer 3 of heat exchanger 2, the outlet of economizer 3 connects the entrance of condenser 4 by pipeline, cold
The pipeline that condenser 4 outlet is connected includes that Liang Ge branch, the first branch line connect the evaporator inlet of air source heat pump 5, its
Evaporator outlet is directly connected to chimney 6；Second branch line is bypass line 51, is directly connected with chimney 6.
Described heat exchanger 2 is dividing wall type heat exchanger, preferably tubular heat exchanger or coil exchanger.Heat exchanger 2
Shell side inlet connects the exhaust opening of gas fired-boiler 1, and shell-side outlet connects economizer 3；The tube-side inlet of heat exchanger 2 is defeated with cold air
Entering pipeline 21 to be connected, tube side outlet connects the combustor of gas fired-boiler 1 by hot-air output channel 22.In heat exchanger 2,
Heat smoke and cold air realize heat exchange by tube wall, heat smoke temperature reduces, enter economizer 3 further with, after heat exchange
Hot-air is sent into the combustor of gas fired-boiler 1 and is burnt, and by the temperature of combustion gas in raising boiler, improves the burning of boiler
Efficiency.
Described economizer 3 preferentially uses H type fin tubular type economizer.The heat exchange tube inlet of economizer 3 through oxygen-eliminating device 32 with
Condenser water tank 31 is connected, and heat exchanger tube outlet is connected with gas fired-boiler 1 by pipeline.
Described condenser 4 is Fin-tube Condenser.The heat exchange tube inlet of condenser 4 connects cold water inlet pipe road 41, changes
Heat pipe outlet is connected with hot water storage tank 43 by hot water delivery pipe road 42.Heat smoke carries out heat exchange with cold water in condenser 4,
Cold water temperature raises, enter in hot water storage tank 43 and store, then is delivered to other and uses hot systems；Under the temperature of heat smoke is further
Fall, and the sour gas such as most carbon dioxide, nitrogen oxides, sulfur dioxide condenses out with steam, obtains weak
Acid condensed water, enters in condensed water storage tank 44 after condenser 4 bottom collection, by blow-off pipe 47 and stores, blow-off pipe 47
On blowoff valve 48 is set.Condensed water in condensed water storage tank 44 is admitted to neutralization reactor 45 and is neutralized, and obtains pH for neutrality
Middle water, in entrance, water circulation utilization system 46 reuses, not externally discharged waste water.
Described heat smoke is admitted to air source heat pump 5 after heat exchanger 2, economizer 3,4 three grades of heat exchange of condenser, first with low
Warm air mixes, is then admitted to as thermal source the vaporizer of air source heat pump 5, discharges heat energy by blood circulation, flue gas
Temperature reduces further, sends into chimney 6 and empties.The energy heats heat supply water that air source heat pump 6 produces, by heat supplying pipeline 72
It is connected to heat user 7, then returns air source heat pump 5 through backheat pipeline 73.Backheat pipeline 73 is provided with for driving heat supply
Circulating pump 71 with water flowing；In the present embodiment, circulating pump is two, and employing is arranged in parallel.
Between condenser 4 and chimney 6, it is additionally provided with bypass line 51, bypass line 51 is provided with shut-off valve 52.Just
Often ruuning situation shut-off valve 52 cuts out, and the flue gas that condenser 4 is discharged is discharged by chimney 6 after air source heat pump 5 recovery waste heat；When
During air source heat pump 5 maintenance down, opening shut-off valve 52, the flue gas that condenser 4 is discharged is through bypass line 51, direct by chimney 6
Outer row.
Pipeline minimum point between described gas fired-boiler 1 and heat exchanger 2 arranges drain pipe 8, drain pipe 8 communicated drainage groove
81, the outlet at bottom of rhone 81 passes through pipeline connection to condensed water storage tank 44；It is provided with drain valve 83 on described drain pipe 8,
On pipeline between described rhone 81 and condensed water storage tank 44, draining pump 82 is set.
Running of the present utility model is:
The heat smoke that gas fired-boiler is discharged sends into heat exchanger through flue, preheats for entering the cold air of gas fired-boiler；
Once the flue gas after cooling enters economizer, carries out heat exchange with the water from condenser water tank；Flue gas after reducing temperature twice enters
Condenser, with cold water heat exchange, generation hot water；Flue gas after three coolings enters air source heat pump, and the part as thermal source is entered
Row recycling；Eventually pass chimney emptying.
The moisture of the flue gas entrained with that gas fired-boiler is discharged is collected through discharge pipe line, is entered rhone storage, then in draining
Pump drives lower remittance condensed water storage tank；Flue gas condense within the condenser under condensed water through blow-off line, enter condensed water storage tank
Store.Condensed water in condensed water storage tank through neutralization after as in water circulation use, do not produce sewage.
Use this utility model device to carry out gas fired-boiler fume afterheat utilization, the power consumption of air source heat pump is carried out point
Analysis.
Selecting 1 air cooling module water chiller-heater unit, name heats general power: 121.9KW.Name COP is 3.72.Winter system
Heat 122 days, runs 10 hours every day.
(1), time with Cryogenic air for thermal source, the operation power consumption of air source heat pump is analyzed:
(2) using heat smoke mix as thermal source with Cryogenic air time, the operation power consumption of air source heat pump analyzes:
It is seen from the above data that use this utility model to carry out at flue gas waste heat recovery, only air source heat pump one, one
Individual winter just can save electricity 20437KW h, and the efficiency of air source heat pump improves 14.1%, saves energy and reduce the cost fairly obvious.
The foregoing is only preferred embodiment of the present utility model, all according to this utility model claim done equal
Deng change and modification, covering scope of the present utility model all should be belonged to.
Claims (7)
1. a gas fired-boiler flue gas waste heat recovery apparatus, it is characterised in that: include gas fired-boiler (1), the heat exchange being sequentially connected with
Device (2), economizer (3), condenser (4), air source heat pump (5) and chimney (6)；The exhaust opening of gas fired-boiler (1) passes through flue
Connect the shell side inlet of heat exchanger (2), shell-side outlet connection economizer (3) entrance of heat exchanger (2), the tube side of heat exchanger (2)
Entrance is connected with cold air input channel (21), and tube side outlet connects gas fired-boiler (1) by hot-air output channel (22)；
Economizer (3) outlet connects condenser (4) entrance by pipeline, and condenser (4) outlet connects the vaporizer of air source heat pump (5)
Entrance, the heat exchange tube inlet of condenser (4) connects cold water inlet pipe road (41), and heat exchanger tube exports by hot water delivery pipe road (42)
It is connected with hot water storage tank (43)；The evaporator outlet of described air source heat pump (5) connects chimney (6), the confession of air source heat pump (5)
Hot water is communicated to heat user (7) by heat supplying pipeline (72), is connected air source heat pump (5) through backheat pipeline (73) again；Described
Bypass line (51) it is additionally provided with between condenser (4) and chimney (6)；
Described condenser (4) bottom arranges blow-off pipe (47), and blow-off pipe (47) is connected with condensed water storage tank (44), condensed water storage tank
(44) by pipeline connection to neutralization reactor (45)；Between described gas fired-boiler (1) and heat exchanger (2), the minimum point of flue sets
Putting drain pipe (8), drain pipe (8) communicated drainage groove (81), rhone (81) is connected with condensed water storage tank (44) by pipeline.
Gas fired-boiler flue gas waste heat recovery apparatus the most according to claim 1, it is characterised in that: described bypass line (51)
On be provided with shut-off valve (52)；Drain valve (83) is set on described drain pipe (8), rhone (81) and condensed water storage tank (44) it
Between pipeline on draining pump (82) is set；Blowoff valve (48) is set on described blow-off pipe (47).
Gas fired-boiler flue gas waste heat recovery apparatus the most according to claim 2, it is characterised in that: described heat exchanger (2) is
Dividing wall type heat exchanger, economizer (3) is fin tubular type economizer, and condenser (4) is Fin-tube Condenser.
Gas fired-boiler flue gas waste heat recovery apparatus the most according to claim 3, it is characterised in that: described economizer (3)
Heat exchange tube inlet is connected with condenser water tank (31) through oxygen-eliminating device (32), and heat exchanger tube outlet is by pipeline and gas fired-boiler (1)
It is connected.
Gas fired-boiler flue gas waste heat recovery apparatus the most according to claim 4, it is characterised in that: described condenser (4) end
Portion is in the funnel-form being easy to condensation water collection.
6. according to the gas fired-boiler flue gas waste heat recovery apparatus described in any one of Claims 1 to 5, it is characterised in that: described time
The circulating pump (71) for driving heat supply water to flow it is provided with on pipe line (73).
Gas fired-boiler flue gas waste heat recovery apparatus the most according to claim 6, it is characterised in that: described circulating pump (71) is
Two, employing is arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620651427.2U CN205807470U (en) | 2016-06-27 | 2016-06-27 | A kind of gas fired-boiler flue gas waste heat recovery apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620651427.2U CN205807470U (en) | 2016-06-27 | 2016-06-27 | A kind of gas fired-boiler flue gas waste heat recovery apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN205807470U true CN205807470U (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620651427.2U Expired - Fee Related CN205807470U (en) | 2016-06-27 | 2016-06-27 | A kind of gas fired-boiler flue gas waste heat recovery apparatus |
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| CN (1) | CN205807470U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062286A (en) * | 2016-12-29 | 2017-08-18 | 中国石油天然气股份有限公司 | A kind of gas fired-boiler oxygen-enriched combusting fume afterheat step is reclaimed and EGR |
| CN112325323A (en) * | 2020-11-03 | 2021-02-05 | 中石化节能技术服务有限公司 | Flue gas waste heat recovery system capable of preventing dew point corrosion |
| CN112393264A (en) * | 2020-11-19 | 2021-02-23 | 郑州科技学院 | Boiler waste heat recycling system |
-
2016
- 2016-06-27 CN CN201620651427.2U patent/CN205807470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062286A (en) * | 2016-12-29 | 2017-08-18 | 中国石油天然气股份有限公司 | A kind of gas fired-boiler oxygen-enriched combusting fume afterheat step is reclaimed and EGR |
| CN112325323A (en) * | 2020-11-03 | 2021-02-05 | 中石化节能技术服务有限公司 | Flue gas waste heat recovery system capable of preventing dew point corrosion |
| CN112393264A (en) * | 2020-11-19 | 2021-02-23 | 郑州科技学院 | Boiler waste heat recycling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20161214 Termination date: 20200627 |