CN205783017U - A kind of smoke waste heat utilization system condensing the air-supply of water heating boiler - Google Patents
A kind of smoke waste heat utilization system condensing the air-supply of water heating boiler Download PDFInfo
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- CN205783017U CN205783017U CN201620445953.3U CN201620445953U CN205783017U CN 205783017 U CN205783017 U CN 205783017U CN 201620445953 U CN201620445953 U CN 201620445953U CN 205783017 U CN205783017 U CN 205783017U
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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
This utility model relates to boiler exhaust smoke waste-heat utilization system, particularly discloses a kind of smoke waste heat utilization system condensing the air-supply of water heating boiler.This smoke waste heat utilization system, including steam turbine condensate line, it is characterized in that: before described electrostatic precipitator, in vertical flue, be disposed with high-temperature flue gas heat exchanger, low-temperature flue gas heat exchanger it is disposed with in desulfurizing tower gas approach, high-temperature flue gas heat exchanger connects condensate line by inlet duct, and backwater connects condensate line by outlet conduit；Low-temperature flue gas heat exchanger connects condensate line by inlet duct, and water outlet respectively enters First air steam air heater and secondary wind steam air heater by steam air heater inlet channel, and backwater enters condensate line by steam air heater water return pipeline.This utility model can effectively reduce exhaust gas temperature to about 85 DEG C, utilizes fume afterheat, promotes power plant's overall operation benefit, additionally, electrostatic precipitator inlet flue gas temperature reduces, effectively reduces dust specific resistance, improves the efficiency of dust collection of electric cleaner.
Description
(1) technical field
This utility model relates to boiler exhaust smoke waste-heat utilization system, particularly to a kind of cigarette condensing the air-supply of water heating boiler
Gas bootstrap system.
(2) background technology
In order to improve the energy-saving effect that fume afterheat utilizes further, need more deeply reducing exhausted smoke temperature, and flue gas
UTILIZATION OF VESIDUAL HEAT IN mode uses combined heat to condense water and boiler air-supply, and by heating boiler wind pushing temperature, and then raising is empty and it
Outlet cigarette temperature, improves coagulation hydroenergy backwater temperature gain energy saving of system.The mode of conventional heating boiler air-supply mainly has two kinds, and one
Planting is to arrange low-temperature flue gas heat exchanger to use closed cycle pipeline with water coal formula steam air heater, and being situated between by closed cycle water coal utilizes cigarette
Gas waste-heat boiler is blown；Another kind is that a high-temperature flue gas heat exchanger backwater part returns condensate system, and a part adds hot water
Coal formula steam air heater.The most fully improve air preheater go out however, to ensure that obtain good energy-saving benefit, rational input and output
, there is shortage of heat and the bigger problem of heat exchange area individually with the air-supply of fume afterheat heating boiler in mouthful cigarette temperature, if utilization
The heat of low-grade condensation water is blown as supplementary heating boiler, can effectively solve the problems referred to above, improves energy-saving benefit.
(3) summary of the invention
This utility model is in order to make up the deficiencies in the prior art, it is provided that one makes full use of low-grade condensation water, raising
The smoke waste heat utilization system condensing the air-supply of water heating boiler of energy-saving efficiency.
This utility model is achieved by the following technical solution:
A kind of smoke waste heat utilization system condensing the air-supply of water heating boiler, including steam turbine condensate line, its feature
It is: be disposed with high-temperature flue gas heat exchanger in vertical flue before described electrostatic precipitator, be disposed with low in desulfurizing tower gas approach
Temperature flue gas heat-exchange unit, high-temperature flue gas heat exchanger connects condensate pipe by high-temperature heat-exchanging inlet duct through high temperature section booster
Road, the backwater of high-temperature flue gas heat exchanger connects condensate line by high-temperature heat-exchanging outlet conduit；Low-temperature flue gas heat exchanger leads to
Crossing low temperature heat exchanger inlet conduit and connect condensate line through low-temperature zone booster, warm braw is passed through in the water outlet of low-temperature flue gas heat exchanger
Device inlet channel respectively enters the First air steam air heater being arranged in an air channel and the secondary wind being arranged in secondary air duct warms up
Wind device, the backwater of First air steam air heater and secondary wind steam air heater enters condensate line by steam air heater water return pipeline.
This utility model arranges high-temperature flue gas heat exchanger before electrostatic precipitator in vertical flue, at desulfurizing tower gas approach
Interior layout low-temperature flue gas heat exchanger, arranges steam air heater in first and second air channel, and described high-temperature flue gas heat exchanger condenses with steam turbine
Water lines connects, and utilizes fume afterheat heat-setting water respectively.Described low-temperature flue gas heat exchanger is with steam turbine condensate line even
Connect, utilize low-grade condensation water and fume afterheat common heating boiler primary and secondary air, high temperature section and low-temperature zone to use two-stage parallel connection
Mode.
More excellent technical scheme of the present utility model is:
The recirculation conduit of connection steam air heater water return pipeline it is provided with, on recirculation conduit on described steam air heater inlet channel
Recirculation pipe valve is installed, it is simple to the switching of steam air heater uses.
Low-temperature zone inlet gate valve, low-temperature zone inlet adjustment valve and low-temperature zone are installed on described cryogenic heat exchanger inlet duct
Inlet non-return valve, high-temperature heat-exchanging inlet duct is provided with high temperature section inlet gate valve, high temperature section inlet adjustment valve and high temperature section
Inlet non-return valve.
High-temperature heat-exchanging backwater valve is installed on described high-temperature heat-exchanging outlet conduit, steam air heater water return pipeline is installed
There is steam air heater backwater valve.
Described high-temperature flue gas heat exchanger and low-temperature flue gas heat exchanger all use modular arrangement, and arrange on outlet conduit
Stop valve.
The body of described high-temperature flue gas heat exchanger, low-temperature flue gas heat exchanger, First air steam air heater and secondary wind steam air heater is equal
For snakelike comb, select " H " type extended surface tube, it is simple to the maintenance of individual module.
In this utility model, condensate system the low-pressure heater mixing main condensate drawn, through high-temperature flue gas heat exchange
Device inlet duct booster boosts, and enters the high-temperature flue gas heat exchanger being arranged in front flue of dust collector, flows into height through snake-like tube row
Temperature flue gas heat-exchange unit outlet conduit, enters the low entrance condensation Jellyfish pipe that adds of next stage and collects.
The low-pressure heater mixing main condensate drawn by condensate system, boosts through low-temperature flue gas heat exchanger inlet conduit
Pump boosts, and enters the low-temperature flue gas heat exchanger being arranged in desulfurizing tower gas approach, flows into steam air heater inlet channel through snake-like tube row,
Respectively enteing first and second steam air heater, backwater adds entrance condensate line by the entrance of steam air heater water return pipeline is low.Low-temperature flue gas changes
Hot device system is provided with recirculating line.
This utility model arranges high-temperature flue gas heat exchanger, cloth in desulfurizing tower gas approach before electrostatic precipitator in flue
Set low temperature flue gas heat-exchange unit, in first and second air channel, arrange steam air heater, the smoke discharging residual heat reclaimed is used for two parts, one
Demultiplexing condenses water and realizes economizing on coal in adding Hot gas turbine, and another part is used for heating primary and secondary air, improves cold section of air preheater and combines
Close tube wall temperature, protect air preheater, the annual conventional steam steam air heater that substitutes, saving consumption vapour.
In addition by utilizing low-grade condensation water and fume afterheat jointly to heat primary and secondary air, boiler wind pushing temperature is improved,
Air preheater outlet cigarette temperature improves therewith, improves the energy level that fume afterheat utilizes, and then improves the energy-saving benefit of system.
This utility model can effectively reduce exhaust gas temperature to about 85 DEG C, utilizes fume afterheat, promotes power plant's overall operation
Benefit, additionally, electrostatic precipitator inlet flue gas temperature reduces, effectively reduces dust specific resistance, improves the efficiency of dust collection of electric cleaner.
(4) accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is further described.
Fig. 1 is structural representation of the present utility model.
In figure, 1 low-temperature zone inlet gate valve, 2 low-temperature zone inlet adjustment valve, 3 low-temperature zone inlet non-return valves, 4 low-temperature zone boostings
Pump, 5 cryogenic heat exchanger inlet ducts, 6 low-temperature flue gas heat exchangers, 7 recirculation pipe valves, 8 recirculation conduits, 9 First air warm braws
Device, 10 secondary wind steam air heaters, 11 steam air heater water return pipelines, 12 steam air heater backwater valves, 13 high temperature section inlet adjustment valve, 14 high temperature
Section inlet gate valve, 15 high-temperature heat-exchanging inlet ducts, 16 high temperature section inlet non-return valves, 17 high temperature section boosters, 18 high-temperature flue gas
Heat exchanger, 19 high-temperature heat-exchanging outlet conduits, 20 high-temperature heat-exchanging backwater valves.
(5) detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment includes steam turbine condensate line, described quiet
It is disposed with high-temperature flue gas heat exchanger 18 in vertical flue before electric cleaner, in desulfurizing tower gas approach, is disposed with low-temperature flue gas heat exchange
Device 6, high-temperature flue gas heat exchanger 18 connects condensate line by high-temperature heat-exchanging inlet duct 15 through high temperature section booster 17, high
The backwater of temperature flue gas heat-exchange unit 18 connects condensate line by high-temperature heat-exchanging outlet conduit 19；Low-temperature flue gas heat exchanger 6 leads to
Crossing low temperature heat exchanger inlet conduit 5 and connect condensate line through low-temperature zone booster 4, the water outlet of low-temperature flue gas heat exchanger 6 is passed through
Steam air heater inlet channel respectively enters the First air steam air heater 9 being arranged in an air channel and the secondary being arranged in secondary air duct
Wind steam air heater 10, the backwater of First air steam air heater 9 and secondary wind steam air heater 10 is entered by steam air heater water return pipeline 11 and condenses water
Pipeline；The recirculation conduit 8 of connection steam air heater water return pipeline 11, recirculation conduit 8 it is provided with on described steam air heater inlet channel
On recirculation pipe valve 7 is installed；Be provided with low-temperature zone inlet gate valve 1 on described cryogenic heat exchanger inlet duct 5, low-temperature zone enters
Mouth regulation valve 2 and low-temperature zone inlet non-return valve 3, high-temperature heat-exchanging inlet duct 15 is provided with high temperature section inlet gate valve 14, height
Temperature section inlet adjustment valve 13 and high temperature section inlet non-return valve 16；On described high-temperature heat-exchanging outlet conduit 19, high temperature heat exchange is installed
Device backwater valve 20, steam air heater water return pipeline 11 is provided with steam air heater backwater valve 12；Described high-temperature flue gas heat exchanger 18 He
Low-temperature flue gas heat exchanger 6 all uses modular arrangement, and arranges stop valve on outlet conduit；Described high-temperature flue gas heat exchanger
18, the body of low-temperature flue gas heat exchanger 6, First air steam air heater 9 and secondary wind steam air heater 10 is snakelike comb, selects " H " type
Extended surface tube.
Cryogenic heat exchanger inlet duct 5 connects by condensate system through low-temperature zone inlet non-return valve 3, low-temperature zone booster 4
The outlet conduit of No. 7, No. 8 low-pressure heaters drawn, is adjusted by low-temperature zone inlet gate valve 1 and low-temperature zone inlet adjustment valve 2
Inlet water temperature to about 76 DEG C, it is ensured that low-temperature flue gas heat exchanger 6 pipe tube wall temperature is not less than 78 DEG C.Low-temperature flue gas heat exchanger 6
Water outlet respectively enter First air steam air heater 9 and secondary wind steam air heater 10, through steam air heater water return pipeline 11 and backwater valve 12
Enter No. 8 and low add entrance, complete closed circuit.System arranges recirculation conduit 8, regulates recirculated water by recirculation pipe valve 7
Amount.System heat exchanger and steam air heater are modular arrangement, import and export and arrange valve and pressure-measuring-point, when pipe is revealed can and
Time leakage detection and cut-out, convenient maintenance.
Low-temperature flue gas heat exchanger 6 operates in the cigarette temperature environment of 83 DEG C-100 DEG C, and its heat exchanger tube need to possess stronger
Corrosion resistance, selects 2205 stainless steel tubes, it is ensured that the corrosion resistance of tube bank.Low-temperature flue gas heat exchanger 6 uses " H " type fin
Pipe, has anti-blocking ash characteristic, arranges acoustic wave ash ejector, can effectively alleviate the heat exchanger stifled ash in low-temperature flue gas environment.Warm braw
Device uses high frequency welding spiral fin tube, is effectively improved heat transfer effect.
High-temperature flue gas heat exchanger 18 in vertical flue, described high-temperature heat-exchanging inlet duct before being arranged on electrostatic precipitator
15 connect, through high temperature section inlet non-return valve 16, high temperature section booster 17, No. 7, No. 8 low-pressure heaters drawn by condensate system
Outlet conduit, adjust inlet water temperature to about 75 DEG C by high temperature section inlet gate valve 14 and high temperature section inlet adjustment valve 13, protect
Card high-temperature flue gas heat exchanger 18 pipe tube wall temperature is not less than 77 DEG C.The water outlet of high-temperature flue gas heat exchanger 18 goes out through high-temperature heat-exchanging
Mouthful pipeline 19, high-temperature heat-exchanging backwater valve 20 return to No. 5 and low add entrance.System heat exchanger is modular arrangement, and import and export set
Put valve and pressure-measuring-point, can leakage detection and cut-out in time, conveniently maintenance when pipe is revealed.
High-temperature flue gas heat exchanger 18 operates in the cigarette temperature environment of 100 DEG C-160 DEG C, and heat exchanger tube selects 20G and ND
Steel, it is ensured that tube bank safe and reliable operation.High-temperature flue gas heat exchanger 18 uses " H " type extended surface tube, by intermediate flow channel effect, adopts
By rational cigarette speed, can realize from deashing function.
Flue gas is reduced to 100 DEG C through high-temperature flue gas heat exchanger 18, temperature by 160 DEG C, and condensing water temperature is by 75 DEG C of raisings
To 130 DEG C, energy-saving effect is notable.Flue gas is reduced to 83 DEG C through low-temperature flue gas heat exchanger 6, temperature by 100 DEG C, boiler air-supply temperature
Degree is brought up to about 70 DEG C by 23 DEG C, and then the inlet flue gas temperature being effectively improved high-temperature flue gas heat exchanger 18 is brought up to 160 by 130
DEG C, gain energy-saving effect.
Claims (5)
1. condensing a smoke waste heat utilization system for water heating boiler air-supply, including steam turbine condensate line, its feature exists
In: it is disposed with high-temperature flue gas heat exchanger (18) in vertical flue before electrostatic precipitator, in desulfurizing tower gas approach, is disposed with low temperature
Flue gas heat-exchange unit (6), high-temperature flue gas heat exchanger (18) passes through high-temperature heat-exchanging inlet duct (15) through high temperature section booster (17)
Connection condensate line, the backwater of high-temperature flue gas heat exchanger (18) connects condensate pipe by high-temperature heat-exchanging outlet conduit (19)
Road；Low-temperature flue gas heat exchanger (6) connects condensate line by cryogenic heat exchanger inlet duct (5) through low-temperature zone booster (4),
The water outlet of low-temperature flue gas heat exchanger (6) respectively enters the First air warm braw being arranged in an air channel by steam air heater inlet channel
Device (9) and the secondary wind steam air heater (10) being arranged in secondary air duct, First air steam air heater (9) and secondary wind steam air heater (10)
Backwater enters condensate line by steam air heater water return pipeline (11).
The smoke waste heat utilization system of condensation water heating boiler the most according to claim 1 air-supply, it is characterised in that: described
The recirculation conduit (8) of connection steam air heater water return pipeline (11) it is provided with, the upper peace of recirculation conduit (8) on steam air heater inlet channel
Equipped with recirculation pipe valve (7).
The smoke waste heat utilization system of condensation water heating boiler the most according to claim 1 air-supply, it is characterised in that: described
Low-temperature zone inlet gate valve (1), low-temperature zone inlet adjustment valve (2) and low-temperature zone are installed on cryogenic heat exchanger inlet duct (5) enter
Mouth check-valves (3), high-temperature heat-exchanging inlet duct (15) is provided with high temperature section inlet gate valve (14), high temperature section inlet adjustment valve
And high temperature section inlet non-return valve (16) (13).
The smoke waste heat utilization system of condensation water heating boiler the most according to claim 1 air-supply, it is characterised in that: described
Being provided with high-temperature heat-exchanging backwater valve (20) on high-temperature heat-exchanging outlet conduit (19), steam air heater water return pipeline (11) is upper to be installed
There is steam air heater backwater valve (12).
The smoke waste heat utilization system of condensation water heating boiler the most according to claim 1 air-supply, it is characterised in that: described
High-temperature flue gas heat exchanger (18) and low-temperature flue gas heat exchanger (6) all use modular arrangement, and arrange cut-off on outlet conduit
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445953.3U CN205783017U (en) | 2016-05-17 | 2016-05-17 | A kind of smoke waste heat utilization system condensing the air-supply of water heating boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445953.3U CN205783017U (en) | 2016-05-17 | 2016-05-17 | A kind of smoke waste heat utilization system condensing the air-supply of water heating boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205783017U true CN205783017U (en) | 2016-12-07 |
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ID=58118596
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620445953.3U Active CN205783017U (en) | 2016-05-17 | 2016-05-17 | A kind of smoke waste heat utilization system condensing the air-supply of water heating boiler |
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| Country | Link |
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| CN (1) | CN205783017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439878A (en) * | 2016-05-17 | 2017-02-22 | 山东泓奥电力科技有限公司 | Flue gas waste heat utilizing system of condensed water heating boiler for air supply |
| CN108518669A (en) * | 2018-06-08 | 2018-09-11 | 江苏双良新能源装备有限公司 | A kind of piping-main scheme thickness gas waste heat source concentrates residual neat recovering system and method |
-
2016
- 2016-05-17 CN CN201620445953.3U patent/CN205783017U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439878A (en) * | 2016-05-17 | 2017-02-22 | 山东泓奥电力科技有限公司 | Flue gas waste heat utilizing system of condensed water heating boiler for air supply |
| CN108518669A (en) * | 2018-06-08 | 2018-09-11 | 江苏双良新能源装备有限公司 | A kind of piping-main scheme thickness gas waste heat source concentrates residual neat recovering system and method |
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