CN109798511A - The waste-heat recovery device of steam boiler - Google Patents
The waste-heat recovery device of steam boiler Download PDFInfo
- Publication number
- CN109798511A CN109798511A CN201811095418.XA CN201811095418A CN109798511A CN 109798511 A CN109798511 A CN 109798511A CN 201811095418 A CN201811095418 A CN 201811095418A CN 109798511 A CN109798511 A CN 109798511A
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- China
- Prior art keywords
- pipe
- hot water
- heat exchanger
- saturated vapor
- connecting tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The present invention relates to the waste-heat recovery devices of steam boiler, it include: heat exchanger group, first, second and third heat exchanger is set to flue, the entrance of first heat exchanger will be connected to water supplying pipe, it will export by being connected to boiler can body to water discharge pipe, the entrance of second heat exchanger, outlet are connected to hot water storage tank by hot water supply pipe and hot water discharge pipe, while the entrance of third heat exchanger is connected to the saturated vapor branch pipe connecting with the main supply pipe of saturated vapor, superheated steam conduit is connected to outlet；Inflow side connecting tube to be connected with each other to water supplying pipe, hot water supply pipe and saturated vapor branch pipe；Discharge side connecting tube to be connected with each other to water discharge pipe, hot water discharge pipe and superheated steam conduit；And first to the tenth control valve, be respectively arranged to water supplying pipe, hot water supply pipe, saturated vapor branch pipe, inflow side connecting tube, to water discharge pipe, hot water discharge pipe, superheated steam conduit and discharge side connecting tube.
Description
Technical field
The present invention relates to a kind of waste-heat recovery devices of steam boiler, in more detail, are related to a kind of the remaining of steam boiler
Heat recovery apparatus to be set to the first of flue to third heat exchanger and is respectively provided with economizer, hot-water heater, overheat
The function of device, or the function of each heat exchanger of diversification.
Background technique
It is well known that the combustion chamber of steam boiler makes fuel combustion heat heating surface by its flame etc. to generate steaming
Vapour, and because the temperature for the exhaust gas being discharged by flue reaches 200 DEG C or more, it is usual in flue in order to recycle the waste heat
It is sequentially arranged superheater and economizer, superheater increases saturated vapor superheated steam, economizer by preheating water supply
Efficiency.
But it is described superheater and economizer are set in the waste-heat recovery device of flue in order, superheater and
Economizer only carries out respective specific simple function, its inefficiency in utility.
One heat exchanger only is set to which dual-purpose is superheater and hot water in flue in addition, disclosing in patent document 1
The steam boiler of heater sets up superheater and hot-water heater.
The steam boiler of the patent document 1, which sets up superheater and hot-water heater and is connected to main supply pipe, is formed in steaming
The vaporium on the top of steam-boiler furnace body, and superheater and hot water heat exchanger are set to flue, so that saturated vapor be supplied
The lower part side of the superheater and hot water heat exchanger and the entrance of the main supply pipe are connected to pipe, meanwhile, described
The interconnecting piece rear of the saturated vapor supply pipe of the entrance of saturated vapor supply pipe and the main supply pipe be respectively set valve A,
B connects superheated steam conduit with the outlet side of the main supply pipe on the top of the superheater and hot water heat exchanger, thus
While control valve A is arranged in the superheated steam conduit, connected in the control valve A entrance side of the superheated steam conduit
Hot water conduit so that control valve B be arranged, in the lower part other side of the superheater and hot water heat exchanger connection pump set up to
Water pipe, by saturated vapor perhaps water supply to the superheater and hot water heat exchanger supply to make its superheat or have choosing
Generate hot water with selecting.
Advanced technical literature
Patent document
(patent document 0001) [patent document 1] KR 10-1006761 B1
Summary of the invention
But although the steam boiler of the patent document 1 sets up superheater and hot-water heater is had and overheated using waste heat
Change saturated vapor the advantages of perhaps generating hot water but superheater can only be played in the heat exchanger that flue is arranged or hot water adds
The function of hot device, in addition, because superheated steam amount and hot water production quantity be fixed, load increase when, superheated steam or
The demand of person's hot water is inadequate, so that the requirement of meet demand person is unable to, especially since waste heat an urgent demand increase is economized on coal
The function of device is truth.
The object of the present invention is to provide a kind of waste-heat recovery devices of steam boiler.In view of the truth, steaming
The flue setting first of boiler furnace is to third heat exchanger, to only individually play economizer, hot-water heater and overheat respectively
The function of device, or more than two heat exchangers is made to play identical function, so as to the requirement of meet demand person.
In order to reach the purpose, the present invention includes: heat exchanger group, and the first, second and third heat exchanger is set to cigarette
Road will be connected to the entrance of the first heat exchanger to water supplying pipe, will export by being connected to boiler tank to water discharge pipe
The entrance of the second heat exchanger, outlet are connected to hot water storage tank by hot water supply pipe and hot water discharge pipe by body, will
While the entrance of the third heat exchanger is connected to the saturated vapor branch pipe connecting with the main supply pipe of saturated vapor, it will overheat
Steam lead is connected to outlet；
Inflow side connecting tube makes described to water supplying pipe, hot water supply pipe and the interconnection of saturated vapor branch pipe；
Discharge side connecting tube makes described to water discharge pipe, hot water discharge pipe and the interconnection of superheated steam conduit；With
And
First to the tenth control valve is respectively arranged at described to water supplying pipe, hot water supply pipe, saturated vapor branch
Pipe, gives water discharge pipe, hot water discharge pipe, superheated steam conduit and discharge side connecting tube at inflow side connecting tube.
As described above, the present invention so that executing respectively by economizing on coal in flue setting first to third heat exchanger
The function of device, hot-water heater and superheater and diversified exhaust-heat absorption function, improve the utilization rate of waste heat, so that two accordingly
Above heat exchanger executes identical function, thus with making the amount property of can choose of confluent, hot water amount or superheated steam big
Amplitude increases, so can cope with when sharply being changed using load, so as to increase utilization efficiency and meet need actively
The requirement for the person of asking.
Detailed description of the invention
Fig. 1 is the structure chart of the embodiment of the present invention.
Fig. 2 is the main portions enlarged drawing of the embodiment of the present invention.
Specific embodiment
Fig. 1 structure chart as embodiment of the invention, Fig. 2 main portions enlarged drawing as embodiment of the invention,
Label 10 is used as steam boiler, because the steam boiler 10 is shown as furnace tube flue tube boiler on attached drawing, to the furnace tube
Flue tube boiler is illustrated.
The steam boiler 10 is provided with furnace tube in the lower inside side of boiler can body 11, and in the side of the furnace tube
And top is equipped with smoke pipe, so that burned flame overturns in furnace tube and is discharged after smoke pipe by flue 12, in the pot
The lower part of retort body 11 is formed with water chamber, and top is formed with vaporium, and the main supply pipe 13 of saturated vapor is connected to the steam
Room, thus by being supplied from the saturated vapor that boiler can body 11 generates to saturated vapor use place.
For the steam boiler, although known furnace tube flue tube boiler is shown and is illustrated, not
It is limited to this, and is also not limited to known steam boiler.
Label 20 is used as heat exchanger group, and the first, second and third heat exchange is arranged in the flue 12 in the heat exchanger group 20
Device 30,40,50.
The first heat exchanger 30 is connected to its entrance to water supplying pipe 31 for be laid with feed pump 32, and water supply is arranged
Outlet pipe 33 is connected to outlet, to be connected to feed trough 34 to water supplying pipe 31, is connected to boiler can body 11 to water discharge pipe 33,
Water discharge pipe 33 is provided with check-valves 35 described, so that the first heat exchanger 30 to be only used as to the function of economizer
When, to preheat to water-supply line supplied to water supplying pipe 31 etc. in first heat exchanger 30 by feed pump 32 using waste heat
Afterwards, to the water supply of the supply preheating of boiler can body 11, increase efficiency accordingly.
Its entrance is connected to the lower part of hot water storage tank 41 and is laid with circulating pump 43 by the second heat exchanger 40
Hot water supply pipe (the hot water supply pipe of Yao Jiare) 42, outlet are connected to top and the hot water discharge pipe of the hot water storage tank 41
(hot water discharge pipe after heating) 44, to be utilized when the second heat exchanger 40 is only used as the function of hot-water heater
Waste heat heats the hot water of the low temperature for being stored in hot water storage tank 41 to be heated in second heat exchanger 40 and generates high temperature
Hot water after, be stored in hot water storage tank 41 and to hot water using place supply.
Its entrance is connected to the saturated vapor branch connecting with the main supply pipe 13 of saturated vapor by the third heat exchanger 50
Pipe 51, and superheated steam conduit 52 is connected in outlet, thus when the third heat exchanger 50 is only used as the function of superheater,
So that the saturated vapor generated from boiler can body 11 is supplied by saturated vapor branch pipe 51 to third heat exchanger 50 and more than utilizing
Heat is heated and supplies the backward superheated steam of saturated vapor superheated steam at.
Described first matches between inlet header (header) 22 and outlet header 23 to third heat exchanger 30,40,50
Heat-exchange tube 21 equipped with multiple row, to substantially expand heating surface area.
Label 60A makes institute as discharge side connecting tube, the inflow side connecting tube 60A as inflow side connecting tube, 60B
It states and is connected with each other to water supplying pipe 31, hot water supply pipe 42 and saturated vapor branch pipe 51, be connected to described first to the friendship of third heat
The entrance of parallel operation 30,40,50, the discharge side connecting tube 60B make it is described to water discharge pipe 33, hot water discharge pipe 44 and
Superheated steam conduit 52 is connected with each other, be connected to described first to third heat exchanger 30,40,50 near exit, will be described
First to third heat exchanger 30,40,50 be used as economizer, hot-water heater and superheater, or selectively play described in
Corresponding function is executed when function.
In addition, described to water supplying pipe 31, hot water supply pipe 42, saturated vapor branch pipe 51, inflow side connecting tube 60A
To between water supplying pipe 31 and hot water supply pipe 42 and between hot water supply pipe 42 and saturated vapor branch pipe 51, water discharge pipe is given
33, hot water discharge pipe 44, superheated steam conduit 52, discharge side connecting tube 60B to water discharge pipe 33 and hot water discharge pipe 44 it
Between, between hot water discharge pipe 44 and superheated steam conduit 52, be provided with first to the tenth control valve 70A, 70B, 70C, 70D,
70E、70F、70G、70H、70I、70J。
Described first to the tenth control valve 70A~70J can be manually operated, or be controlled automatically by control device
System.
Also, the present invention can be by controlling first to the tenth control valve 70A~70J, thus by first to third heat
Two in exchanger 30,40,50 are used as the function of superheater, hot-water heater, economizer, and a remaining heat exchanger is used
Make economizer, superheater, alternatively, it is also possible to by first to third heat exchanger 30,40,50 is completely used as superheater, hot water adds
Hot device and economizer.
Unaccounted label 14 is burner, and 15 be valve.
Present invention as described above, using first heat exchanger to third heat exchanger 30,40,50 as economizer,
The case where hot-water heater and superheater use, first to the 6th control valve 70A~70F is opened, and the 7th to the tenth control
Valve 70G~70J close, be set to the main supply pipe 13 of saturated vapor valve 15 turn on or off after, be stored in feed trough
34 water supply is supplied by driving feed pump 32 to first heat exchanger 30, and the heat of hot water storage tank 41 to be heated is stored in
Water is supplied by driving circulating pump 43 to second heat exchanger 40, is steamed in the saturated vapor that boiler can body 11 generates by saturation
Vapour branch pipe 51 is supplied to third heat exchanger 50.
As described above, being supplied respectively to water supply, the hot water of Yao Jiare and saturation to first to third heat exchanger 30,40,50
Steam, to be heated using the waste heat being discharged by flue 12, the water supply after preheating is poured water by being used as to water discharge pipe 33
It is supplied to boiler can body 11, hot water after heating is stored by hot water discharge pipe 44 to hot water storage tank 44 and to the hot water of needs
It is supplied at supply, superheated steam is supplied at by superheated steam conduit 52 to superheated steam.
As described above, first executes economizer, hot-water heater and superheater to third heat exchanger 30,40,50 respectively
Function, so that diversified exhaust-heat absorption function, can be improved the utilization rate of waste heat accordingly.
Also, the case where being used as superheater for first to third heat exchanger 30,40,50, if opening third control valve
Door 70C, the six, the seven, eight control valve 70F, 70G, 70H and the nine, the ten control valves 70I, 70J, and closing first and second,
Four, five control valve 70A, 70B, 70D, 70E then will pass through saturated vapor branch pipe from the saturated vapor that boiler can body 11 generates
51 and inflow side connecting tube 60A is supplied to first to third heat exchanger 30,40,50 and is heated using waste heat, is become
After hot steam, pass through discharge side connecting tube in the superheated steam that first and second heat exchanger 30,40 obtains superheated steam
60B passes through superheated steam conduit 52 to supply at superheated steam supply in the superheated steam that third heat exchanger 50 generates.
Moreover, second and third heat exchanger 40,50 can be used as superheater and by first heat exchanger
30 use as economizers, or by the conduct superheater of third heat exchanger 50 use and by first and second heat exchanger 30,
40 use as hot-water heater.
In addition, first can be used as hot-water heater use to third heat exchanger 30,40,50, second and third heat is handed over
Parallel operation 40,50 can be used as hot-water heater, first heat exchanger 30 can be used as economizer use.
Also, first, which can be used as economizer to third heat exchanger 30,40,50, uses, first and second heat exchanger
30,40 it can be used as economizer, third heat exchanger 50 can be used as superheater use.
As described above, using first to third heat exchanger 30,40,50 as economizer, hot-water heater and overheat
Device use, or by more than two heat exchangers be used as identical function the case where the first control valve to the tenth control valve
70A~70J is opened and closed as shown in Table 1.
Table one
Valve opening and closing figure
As described above, making more than two heat exchangers execute identical function, so that confluent, hot water amount or overheat
The amount of steam selectively increases considerably, when sharply being changed using load, for example, the mistake generated from third heat exchanger 50
The amount of hot steam is unsatisfactory for the case where demand of load, by also generating superheated steam, energy in first and second heat exchanger
The amount for meeting the superheated steam of demand of required load is supplied dynamicly, can increase utilization efficiency accordingly.Label declaration
12: flue, 20: heat exchanger group, 30,40,50: the first to third heat exchanger,
60A: inflow side connecting tube, 60B: discharge side connecting tube, the 70A~70J: the first to the tenth control valve.
Claims (4)
1. a kind of waste-heat recovery device of steam boiler comprising:
First, second and third heat exchanger is set to flue by heat exchanger group, and first heat will be connected to water supplying pipe and is handed over
The entrance of parallel operation will be exported by being connected to boiler can body to water discharge pipe, and the entrance of the second heat exchanger, outlet is logical
Overheat water supplying pipe and hot water discharge pipe are connected to hot water storage tank, and the entrance of the third heat exchanger is connected to and is saturated
While the saturated vapor branch pipe of the main supply pipe connection of steam, superheated steam conduit is connected to outlet；
Inflow side connecting tube makes described to water supplying pipe, hot water supply pipe and the interconnection of saturated vapor branch pipe；
Discharge side connecting tube makes described to water discharge pipe, hot water discharge pipe and the interconnection of superheated steam conduit；And
First to the tenth control valve is respectively arranged at described to water supplying pipe, hot water supply pipe, saturated vapor branch pipe, stream
Enter side connecting tube, to water discharge pipe, hot water discharge pipe, superheated steam conduit and discharge side connecting tube.
2. the waste-heat recovery device of steam boiler according to claim 1, which is characterized in that
First is equipped with the heat-exchange tube of multiple row to third heat exchanger between inlet header and outlet header.
3. the waste-heat recovery device of steam boiler according to claim 1, which is characterized in that
Feed pump is being laid to water supplying pipe.
4. the waste-heat recovery device of steam boiler according to claim 1, which is characterized in that
Circulating pump is laid in hot water supply pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170152898A KR101842713B1 (en) | 2017-11-16 | 2017-11-16 | Waste heat recovery apparatus of steam boiler |
| KR10-2017-0152898 | 2017-11-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109798511A true CN109798511A (en) | 2019-05-24 |
| CN109798511B CN109798511B (en) | 2020-03-10 |
Family
ID=61901322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811095418.XA Expired - Fee Related CN109798511B (en) | 2017-11-16 | 2018-09-19 | Waste heat recovery device of steam boiler |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101842713B1 (en) |
| CN (1) | CN109798511B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800961A (en) * | 2018-06-29 | 2018-11-13 | 天津健威泽节能环保科技股份有限公司 | Kiln cylinder body steam heat-exchanging system and implementation method for the low pressure filling of cement kiln power station |
| CN112013704B (en) * | 2020-09-04 | 2022-06-07 | 沈阳建筑大学 | A high-efficient type waste heat recovery system for steelmaking continuous casting |
| CN112361216A (en) * | 2020-10-26 | 2021-02-12 | 河南中烟工业有限责任公司 | Steam supply system of cigarette throwing workshop |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202902893U (en) * | 2012-10-26 | 2013-04-24 | 福建省文松彩印有限公司 | Smoke waste heat boiler system of rotary hearth furnace |
| CN104390200A (en) * | 2014-11-21 | 2015-03-04 | 张家港格林沙洲锅炉有限公司 | Marine exhaust gas waste heat boiler |
| KR101601667B1 (en) * | 2014-05-23 | 2016-03-09 | 주식회사 동광보일러 | Hot water boiler for heating and bath |
| CN205607171U (en) * | 2016-04-08 | 2016-09-28 | 陆达 | To super pressure -high temperature waste heat power generation system in low temperature flue gas adopts |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101261861B1 (en) * | 2011-02-10 | 2013-05-07 | 삼성중공업 주식회사 | Brown gas generating system using waste heat collecting device of engine |
| KR101476557B1 (en) * | 2013-11-06 | 2015-01-02 | 코오롱글로벌 주식회사 | Heat supply apparatus |
| KR101613228B1 (en) * | 2014-09-15 | 2016-04-18 | 대우조선해양 주식회사 | Waste Heat Recovery Unit for a Ship and Method for Recoverying Waste Heat |
| CN104534539A (en) * | 2015-01-08 | 2015-04-22 | 清华大学 | Gas steam combined cycle central heating device and heating method |
| JP2017187270A (en) * | 2016-04-04 | 2017-10-12 | 徳夫 門脇 | Steam supply device |
-
2017
- 2017-11-16 KR KR1020170152898A patent/KR101842713B1/en active IP Right Grant
-
2018
- 2018-09-19 CN CN201811095418.XA patent/CN109798511B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202902893U (en) * | 2012-10-26 | 2013-04-24 | 福建省文松彩印有限公司 | Smoke waste heat boiler system of rotary hearth furnace |
| KR101601667B1 (en) * | 2014-05-23 | 2016-03-09 | 주식회사 동광보일러 | Hot water boiler for heating and bath |
| CN104390200A (en) * | 2014-11-21 | 2015-03-04 | 张家港格林沙洲锅炉有限公司 | Marine exhaust gas waste heat boiler |
| CN205607171U (en) * | 2016-04-08 | 2016-09-28 | 陆达 | To super pressure -high temperature waste heat power generation system in low temperature flue gas adopts |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101842713B1 (en) | 2018-03-28 |
| CN109798511B (en) | 2020-03-10 |
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Granted publication date: 20200310 |