CN106051736A - Condensed steam boiler - Google Patents
Condensed steam boiler Download PDFInfo
- Publication number
- CN106051736A CN106051736A CN201610571310.8A CN201610571310A CN106051736A CN 106051736 A CN106051736 A CN 106051736A CN 201610571310 A CN201610571310 A CN 201610571310A CN 106051736 A CN106051736 A CN 106051736A
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- China
- Prior art keywords
- boiler
- steam boiler
- condensation steam
- heat exchanger
- air
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Classifications
-
- 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
- F22D1/28—Feed-water heaters, i.e. economisers or like preheaters for direct heat transfer, e.g. by mixing water and steam
-
- 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
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The embodiment of the invention provides a condensed steam boiler. Flue gas generated from the condensed steam boiler is in direct contact with boiler feed water to conduct heat exchange. The condensed steam boiler, provided by the embodiment of the invention, has the advantages that the efficiency of the boiler can be improved, fuels are saved, and the water resource is saved.
Description
Technical field
The present invention relates to boiler technology field, particularly relate to a kind of condensation steam boiler.
Background technology
Exhaust gas temperature is too high is the one of the main reasons causing boiler efficiency low, the exhaust gas temperature of general gas fired-boiler
Being about 120～140 DEG C, the flue gas loss of boiler is 6～about 7%.Boiler oil consumption increases, and wastes the energy.
Water vapour in boiler exhaust gas will take away the substantial amounts of latent heat of vaporization, and the substantial amounts of energy is wasted.Also result in boiler effect
Rate is low, and fuel consumption increases.Natural gas and oxygen burn completely when being release caloric value be 39842 kilojoules, be wherein frequently used for
Calculate for low heat value, its value is 35906 kilojoules, and remaining partial heat is the latent heat of vaporization of water, is 3936 kilojoules.This
Partial heat enters air along with flue gas, forms energy waste.
Boiler emission flue gas NOxContent superelevation, is the one of the main reasons causing atmospheric pollution, and country is to air in recent years
Pollution control dynamics increases year by year, it is desirable to boiler smoke NOxContent is controlling at 100mg/m3Below.
Plain cylindrical furnace heat transfer process is, flue gas is first to pressurized metal heat-exchange, and pressurized metal to internal working medium heat exchange, is made again
Become the boiler convection coefficient of heat transfer too low, constant for reaching heat exchange amount, it is necessary to increase boiler heating surface, cause boiler part in compression
Steel consumption increases, boiler high cost.
Summary of the invention
The present invention provides a kind of condensation steam boiler, it is possible to solve boiler in prior art the most energy-conservation, inefficient
Problem.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of condensation steam boiler, cold
The flue gas that solidifying steam boiler produces directly contacts with boiler feedwater and carries out heat exchange.
Wherein, condensation steam boiler includes condensing heat exchanger, and the inside of condensing heat exchanger is provided with water spraying tray, and water spraying tray has
Multiple holes, feedwater is passed through multiple hole and is carried out heat exchange with flue gas.
Water spraying tray is multiple, and in the vertical direction interval is arranged.
Wherein, one of them one end of adjacent water spraying tray is connected with the left wall of condensing heat exchanger, the other end and condensing heat-exchange
The right wall of device is not connected to；Another one end of adjacent water spraying tray is not connected to the left wall of condensing heat exchanger, and the other end changes with condensation
The right wall of hot device connects.
Condensing heat exchanger can make arbitrary shape as the case may be, and internal water spraying tray can also make arbitrary shape,
Such as rectangle, circle, toroidal etc., its heat transfer theory is constant.
Wherein, the top of condensing heat exchanger is provided with feed-water intake and exhanst gas outlet, and the bottom of condensing heat exchanger is provided with feedwater
Outlet and smoke inlet, boiler feedwater enters condensing heat exchanger from top to bottom by gravity and carries out directly with flue gas from lower to upper
Contact, exhanst gas outlet connects chimney.
Wherein, condensation steam boiler also includes aerator, air preheater and burner, and it is empty that air preheater has first
QI KOU and the second air scoop, aerator is connected by pipeline and the first air scoop, and burner is connected by pipeline and the second air scoop
Connecing, the air that aerator absorbs reaches air preheater via the first air scoop, the air heating that air preheater will receive
Burner is reached to preset temperature and by the second air scoop.
Wherein, condensation steam boiler also includes boiler body, and boiler body is connected with burner, and boiler body is provided with use
In the structure of boiler barrel as the vapor space.
Wherein, air preheater has the 3rd flue gas mouth and the 4th flue gas mouth, and boiler body passes through pipeline and the 3rd flue gas
Mouth connects, and the 4th flue gas mouth is connected with heat exchanger gas approach by flue.
Wherein, condensation steam boiler also includes that water pump, water pump one end are connected with feedwater outlet, and the other end is with boiler body even
Connect.
Wherein, burner is full pre-mixed configuration surface combustion burner.
The flue gas of generation is directly contacted with boiler feedwater and carries out heat friendship by the condensation steam boiler that the embodiment of the present invention provides
Change.The condensation steam boiler that the embodiment of the present invention provides can improve boiler efficiency, saves fuel, saving water resource.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing, wherein:
Fig. 1 is the structural representation sketch of condensation steam boiler one embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, belongs to the scope of protection of the invention.
Refer to the structural representation sketch that Fig. 1, Fig. 1 are condensation steam boiler one embodiments of the present invention.The embodiment of the present invention
The flue gas that produces of condensation steam boiler directly contact with boiler feedwater and carry out heat exchange.Specifically, this condensation steam boiler
Including aerator 11, air preheater 12, burner 13, boiler body 14, structure of boiler barrel 15, water pump 16, condensing heat exchanger 17
With chimney 18.
Aerator 11 is used for carrying air and burns to burner 13.
Air preheater 12 is for preheating air, and is transmitted by the air after preheating to burner 13, to improve
The heat exchange performance of boiler, reduces energy expenditure.In the present embodiment, air preheater 12 has the first air scoop 121, second
Air scoop the 122, the 3rd flue gas mouth 123 and the 4th flue gas mouth 124.First air scoop 121 is connected by air channel with aerator 11,
Second air scoop 122 is connected by air channel with burner 13, and the air that aerator 11 absorbs reaches sky via the first air scoop 121
Air preheater 12, the air received is heated to preset temperature and reaches combustion by the second air scoop 122 by air preheater 12
Burner 13.
Burner 13 receives the air heated by air preheater 12.For energy-conserving and environment-protective, the present embodiment uses full premix
Body structure surface burner 13.Full pre-mixed configuration surface combustion burner 13 can be by boiler smoke NOxContent is controlling at 30mg/m3Hereinafter,
Less than national requirements standard.
Boiler body 14 is place and the main element of work of boiler combustion.In the present embodiment, in order to alleviate pot
The overall weight of furnace body 14, is provided with for the structure of boiler barrel 15 as the vapor space on boiler body 14.By individually setting
Put structure of boiler barrel 15, boiler body 14 is no longer necessary to the vapor space, thus reduces the overall dimensions of boiler body 14, fall
The low overall weight of boiler body 14.Study discovery through inventor, arranged by this kind, can be by straight for the stack shell of boiler body 14
Footpath reduces 200-400mm.Boiler body 14 is connected by flue and the 3rd flue gas mouth 123.
Water pump 16 is for providing water source for condensation steam boiler.In the present embodiment, water pump 16 is preferably feed pump 16, gives
Water pump 16 can adjust the water-supply quantity of self according to practical situation, and one end of feed pump 16 is connected with boiler body 14.
Condensing heat exchanger 17 is that the flue gas that in the present embodiment, condensation steam boiler produces directly contacts with boiler feedwater and carries out
The place of heat exchange.Specifically, the inside of condensing heat exchanger 17 is provided with water spraying tray 171, and water spraying tray 171 has multiple hole, pot
Stove feedwater is passed through multiple hole and is carried out heat exchange with flue gas.Preferably, water spraying tray 171 is multiple, and in the vertical direction interval sets
Put.By arrange multiple water spraying tray 171 can to a certain extent reducing smoke rise speed, extend air water exchange time.
Further, adjacent one of them one end of water spraying tray 171 is connected with the left wall 172 of condensing heat exchanger 17, the other end and condensation
The right wall 173 of heat exchanger 17 is not connected to；Another one end of adjacent water spraying tray is not connected to the left wall 172 of condensing heat exchanger 17,
The other end is connected with the right wall 173 of condensing heat exchanger 17.Make flue gas rise needs to go for a stroll (rising of flue gas curve), prolong further
Grow the time of air water exchange.In the present embodiment, water spraying tray 171 is sieve-like stephanoporate steel plate, and boiler feedwater is divided by multiple holes
Dissipating into the current that multiply is tiny, current are column or drops, will not be taken away by flue gas, and heat exchange effect is good.
The top of condensing heat exchanger 17 is provided with feed-water intake 173 and exhanst gas outlet 174, and the bottom of condensing heat exchanger 17 is provided with
Feed-water intake 175 and exhanst gas outlet 176, boiler feedwater in condensing heat exchanger, by gravity from top to bottom with from lower to upper
Flue gas directly contacts, and exhanst gas outlet 174 connects chimney 18.4th flue gas mouth 124 is by flue with gas approach 175 even
Connecing, water pump 16 one end is connected with feedwater outlet 176.
It is described above the concrete structure of condensation steam boiler, the work process of this condensation steam boiler is described below.
Air under room temperature is collected by aerator 11 and is delivered to the first air scoop 121 of air preheater 12, air
The air received is heated to preset temperature by preheater 12, and is transmitted to burner 13, burner by the second air scoop 122
The air received is burnt in boiler body 14 by 13, thus heats the water in boiler body 14, burner
13 high-temperature flue gas produced, by the 3rd incoming air preheater of flue gas mouth 123 12, carry out heat friendship inside air preheater 12
Changing so that flue gas cool-down, the flue gas after cooling is entered from the bottom of condensing heat exchanger 17 via gas approach 175 by flue, knot
Close and feed water from condensing heat exchanger 17 top, directly contact inside condensing heat exchanger 17 and hot-cast socket, boiler feed temperature
Increasing, flue-gas temperature reduces, and the flue gas after temperature reduces is discharged by chimney 18 via exhanst gas outlet 174, after temperature increases
Boiler feedwater flows into feed pump 16 by outlet 176, and the boiler feedwater having uniform temperature is noted by machine water pump 16 as required
Enter to boiler body 14 and carry out water circulation, and now boiler feedwater has uniform temperature, can improve the heat exchange performance of boiler.
The most whole process all can be realized unmanned by procedure auto-control.
The condensation steam boiler of the embodiment of the present invention has the advantage that
1, air water direct heat transfer coefficient is 200 times of the plain cylindrical furnace coefficient of heat transfer, it is ensured that boiler part in compression heating surface subtracts
Few, and the overall heat exchange amount of boiler is constant.
2, using condensing heat exchanger to be controlled by exhaust gas temperature at 40～50 DEG C, the water vapour in flue gas is all condensed into
Water, releases the latent heat of vaporization, improves boiler efficiency, saves fuel, saving water resource.Natural gas and oxygen burn release when being completely
Caloric value is 39842 kilojoules, be wherein frequently used for calculating for low heat value, its value is 35906 kilojoules, remaining part heat
Amount is the latent heat of vaporization of water, is 3936 kilojoules.After boiler total condensation, absorb whole latent heat, with the ratio of low heat value be
3936/35960=0.10962, about 9～11%.Gas fired-boiler often steams a ton gas consumption 75m routinely3/ h calculates, and boiler is imitated
Rate improves 11% can save combustion gas 8.25m3About/h, boiler longtime running, benefit is the biggest.
3, air water direct heat transfer, uses boiler feedwater cooled flue gas, and water temperature raises simultaneously, and the dissolubility of oxygen reduces, and separates out oxygen
Gas, therefore need not install oxygen-eliminating device, decrease the one-time investment of owner.
4, low nitrogen formula burner can be by boiler smoke NOxContent is controlling at 30mg/m3Hereinafter, less than national requirements standard.
5, conventional boiler exhaust gas temperature is at about 120～140 DEG C, and the flue gas loss of boiler is 6～about 7%, increases cold
After solidifying heat exchanger, exhaust gas temperature is only 50 DEG C, and boiler exhaust gas loss is only about 2%, and boiler efficiency improves about 4.5%, by often
Rule gas fired-boiler often steams a ton gas consumption 75m3/ h calculates, and boiler efficiency improves 4.5% can save combustion gas 4m3About/h, boiler is long
Phase is run, and benefit is the biggest.
6, the NC boiler efficiency of conventional gas is about 92%, and condensing boiler is then 92%+11%+4.5%=
107.5%, boiler efficiency is high.
7, Section 2 and Section 5 two amount to and save combustion gas 12.25m3/ h, calculates by running 10h, amount to and save every day
12.25m3/ h*10h*2.4 unit/m3=294 yuan.It is to say, one 1 boiler steaming ton, within one day, run 10 hours, so that it may save
294 yuan, one month save 8820 yuan, this is 1 ton of boiler calculation result, if boiler tonnage increase, save expense also can by than
Example is multiplied.
8, trickle disc type condensing heat exchanger is atmospheric pressure device, and requirement of strength is less than pressure-bearing part, and steel plate thickness is less than pressure-bearing
Parts, boiler overall weight is light.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. a condensation steam boiler, it is characterised in that the flue gas that described condensation steam boiler produces directly connects with boiler feedwater
Touch and carry out heat exchange.
Condensation steam boiler the most according to claim 1, it is characterised in that described condensation steam boiler includes condensing heat-exchange
Device, the inside of described condensing heat exchanger is provided with water spraying tray, and described water spraying tray has multiple hole, and the plurality of hole is passed through in described feedwater
Heat exchange is carried out at smoke space with described flue gas.
Condensation steam boiler the most according to claim 2, it is characterised in that described water spraying tray is multiple, and in vertically side
Upwards it is spaced setting.
Condensation steam boiler the most according to claim 3, it is characterised in that adjacent one of them one end of described water spraying tray
Being connected with the left wall of described condensing heat exchanger, the other end is not connected to the right wall of described condensing heat exchanger；Adjacent described trickle
Another one end of dish is not connected to the left wall of described condensing heat exchanger, and the other end is connected with the right wall of described condensing heat exchanger.
Condensation steam boiler the most according to claim 4, it is characterised in that the top of described condensing heat exchanger is provided with feedwater
Entrance and exhanst gas outlet, the bottom of described condensing heat exchanger is provided with gas approach and feedwater outlet, described feedwater by gravity by
On carry out direct contact heat transfer down into described condensing heat exchanger and described flue gas from lower to upper, described exhanst gas outlet connects
There is chimney.
Condensation steam boiler the most according to claim 5, it is characterised in that described condensation steam boiler also includes air blast
Machine, air preheater and burner, described air preheater has the first air scoop and the second air scoop, and described aerator passes through
Pipeline is connected with described first air scoop, and described burner is connected with described second air scoop by pipeline, and described aerator is inhaled
The air received reaches described air preheater via the first air scoop, and the air received is heated to pre-by described air preheater
If temperature also reaches described burner by described second air scoop.
Condensation steam boiler the most according to claim 6, it is characterised in that described condensation steam boiler also includes that boiler is originally
Body, described boiler body is connected with described burner, and described boiler body is provided with for the structure of boiler barrel as the vapor space.
Condensation steam boiler the most according to claim 7, it is characterised in that described air preheater has the 3rd flue gas mouth
With the 4th flue gas mouth, described boiler body is connected with described 3rd flue gas mouth by flue, and described 4th flue gas mouth passes through flue
It is connected with described gas approach.
Condensation steam boiler the most according to claim 7, it is characterised in that described condensation steam boiler also includes water pump,
Described water pump one end is connected with described heat exchanger feedwater outlet, and the other end is connected with described boiler body.
10. according to the condensation steam boiler described in any one of claim 6-9, it is characterised in that described burner is full premix
Body structure surface burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610571310.8A CN106051736A (en) | 2016-07-19 | 2016-07-19 | Condensed steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610571310.8A CN106051736A (en) | 2016-07-19 | 2016-07-19 | Condensed steam boiler |
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| Publication Number | Publication Date |
|---|---|
| CN106051736A true CN106051736A (en) | 2016-10-26 |
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ID=57187275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610571310.8A Pending CN106051736A (en) | 2016-07-19 | 2016-07-19 | Condensed steam boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186191A (en) * | 2019-07-04 | 2019-08-30 | 北控清洁热力有限公司 | Bearing hot water boiler |
| CN110186190A (en) * | 2019-07-04 | 2019-08-30 | 北控清洁热力有限公司 | Combustion gas condensate vacuum phase change boiler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2352872Y (en) * | 1998-07-27 | 1999-12-08 | 郝玉福 | Cold fluid and hot fluid directly exchanging type hot water boiler |
| JP2005164118A (en) * | 2003-12-02 | 2005-06-23 | Takuma Co Ltd | Exhaust heat recovery system |
| CN201110536Y (en) * | 2007-09-24 | 2008-09-03 | 广州德上能源技术有限公司 | Flue gas waste heat recovery energy-saving system |
| CN105240826A (en) * | 2015-11-16 | 2016-01-13 | 江苏昌明环保科技有限公司 | Recovery system and method for low-temperature flue gas waste heat |
| CN204962699U (en) * | 2015-08-31 | 2016-01-13 | 中国石油天然气集团公司 | Oil field steam injection boiler combination formula flue gas condensing equipment |
| CN206037002U (en) * | 2016-07-19 | 2017-03-22 | 北京华林联合热能技术有限公司 | Condensation steam boiler |
-
2016
- 2016-07-19 CN CN201610571310.8A patent/CN106051736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2352872Y (en) * | 1998-07-27 | 1999-12-08 | 郝玉福 | Cold fluid and hot fluid directly exchanging type hot water boiler |
| JP2005164118A (en) * | 2003-12-02 | 2005-06-23 | Takuma Co Ltd | Exhaust heat recovery system |
| CN201110536Y (en) * | 2007-09-24 | 2008-09-03 | 广州德上能源技术有限公司 | Flue gas waste heat recovery energy-saving system |
| CN204962699U (en) * | 2015-08-31 | 2016-01-13 | 中国石油天然气集团公司 | Oil field steam injection boiler combination formula flue gas condensing equipment |
| CN105240826A (en) * | 2015-11-16 | 2016-01-13 | 江苏昌明环保科技有限公司 | Recovery system and method for low-temperature flue gas waste heat |
| CN206037002U (en) * | 2016-07-19 | 2017-03-22 | 北京华林联合热能技术有限公司 | Condensation steam boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186191A (en) * | 2019-07-04 | 2019-08-30 | 北控清洁热力有限公司 | Bearing hot water boiler |
| CN110186190A (en) * | 2019-07-04 | 2019-08-30 | 北控清洁热力有限公司 | Combustion gas condensate vacuum phase change boiler |
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Application publication date: 20161026 |
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