CN109210523A - A kind of boiler blowdown water residual neat recovering system - Google Patents
A kind of boiler blowdown water residual neat recovering system Download PDFInfo
- Publication number
- CN109210523A CN109210523A CN201811188644.2A CN201811188644A CN109210523A CN 109210523 A CN109210523 A CN 109210523A CN 201811188644 A CN201811188644 A CN 201811188644A CN 109210523 A CN109210523 A CN 109210523A
- Authority
- CN
- China
- Prior art keywords
- heat
- boiler
- heat exchange
- heat exchanger
- water inlet
- 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.)
- Pending
Links
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
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a kind of boiler blowdown water residual neat recovering systems, including boiler, oxygen-eliminating device, secondary economizer, heat exchange of heat pipe, sewerage flash vessel and treatment tank, water inlet after carrying out heat exchange is sent into secondary economizer by the heat exchange of heat pipe, the pair economizer is for increasing water inlet in the heat absorption of heating surface, and the oxygen-eliminating device is to carry out heat exchange deoxygenation with heating steam.The present invention is exchanged heat using industrial heat pipe heat exchanger, and hot pipe conducting heating effects are thousands of times higher than copper, and in addition heat exchanger fin is designed using special fin wing, so that heat pipe heat exchanging efficiency is higher than ordinary heat exchanger, substantially increases waste heat recovery rate；Heat pipe uses phase-change heat-exchange simultaneously, and not needing exchange hot working fluid offer extra power can be completed heat transfer process；And the inlet water temperature for entering heat exchange of heat pipe cold end is low, and heat transfer temperature difference is big, and recuperation of heat effect is good, has not only saved cost, but also heat exchange efficiency is high, working efficiency is fast.
Description
Technical field
The present invention relates to Industrial Boiler Technology field, specifically a kind of boiler blowdown water residual neat recovering system.
Background technique
During industrial boiler operation, the water in boiler is constantly concentrated by evaporation, and salt content and various impurity gradually increase, and is
Fouling is prevented, various scale removal medicaments is added into boiler water, also some products can be made to deposit in drum, to make boiler
Water and steam quality decline.In order to maintain steam quality in a certain range, it is necessary to carry out blowdown to boiler water.
Blowdown mode has continuous blowdown and periodical blowdown: continuous blowdown is continuously from 200mm under the liquid level that boils in boiler
The maximum water of salt content is discharged to continuous blowdown flash tank by place, while purer water is supplemented to boiler, to maintain furnace water
Normal salt content；Periodical blowdown be from the minimum point of drum and from each header of boiler be deposited in drum bottom sediment,
The various impurity such as iron rust are discharged into regular unloading container with water, to purify water, prevent blocking pipeline, deteriorate steam quality.
Industrial Boiler design blowdown flow rate is generally the 1%-2% of steam production, this part sewerage by blowdown system into
It is directly discharged into outer drainage after entering blowdown cooling tank, not only has heat and water resource utility model, also generates water during blowdown and steam
Gas condensing gas is all unfavorable to safety in production and corrective maintenance.Therefore, those skilled in the art provide a kind of boiler blow-off
Water residual neat recovering system, to solve the problems mentioned in the above background technology.
Summary of the invention
The purpose of the present invention is to provide a kind of boiler blowdown water residual neat recovering systems, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of boiler blowdown water residual neat recovering system, including
Boiler, oxygen-eliminating device, secondary economizer, heat exchange of heat pipe, sewerage flash vessel and treatment tank, the heat exchange of heat pipe will carry out
Secondary economizer is sent into water inlet after heat exchange, and the pair economizer is for increasing water inlet in the heat absorption of heating surface, the deoxygenation
Device is to carry out heat exchange deoxygenation with heating steam, and the sewerage flash vessel is for expanding the steam blowdown decompression of boiler
Hold, the treatment tank is handled the sewage of boiler discharge.
As a further solution of the present invention: the heat exchange of heat pipe includes heat exchanger cold end and heat exchanger hot end, described
Heat exchanger cold end carries out hot friendship by heat exchanger hot end using the water inlet of boiler as cooling medium, by water inlet and the sewerage of boiler
It changes.
As further scheme of the invention: the heat exchanger hot end is heated by boiler blowdown water, the row after heat exchange
Sewage temperature is lowered into treatment tank.
As further scheme of the invention: the heat exchanger hot end is connected with sewerage flash vessel, heat exchanger cold end
It connects with water inlet pipe.
As further scheme of the invention: the heat exchanger fin in the heat exchange of heat pipe is designed using special fin wing, and
Heat exchange of heat pipe uses phase-change heat-exchange.
As further scheme of the invention: steps are as follows for remaining recuperation of heat:
S1: the water inlet of boiler is entered by water inlet pipe by heat exchanger cold end, is heated by heat exchanger cold end to the water inlet of boiler,
Secondary economizer is sent into water inlet after progress heat exchange；
S2: after water inlet enters secondary economizer, by the heating of secondary economizer, increasing water inlet in the heat absorption of heating surface, then
It is sent into boiler, while carrying out heat exchange deoxygenation using the heating steam of oxygen-eliminating device and boiler；
S3: using sewerage flash vessel by the sewage of the discharge in boiler the inflow heat exchanger hot end after decompression and expansion,
The heat of the received sewerage in exchanger heat end, transfers heat to again by heat exchanger cold end into water, to realize heat
Recycling, and the blowdown coolant-temperature gage after heat exchange is lowered into treatment tank.
Compared with prior art, the beneficial effects of the present invention are: the present invention is exchanged heat using industrial heat pipe heat exchanger, heat
Pipe conduction heating effects are thousands of times higher than copper, and in addition heat exchanger fin is designed using special fin wing, so that heat pipe heat exchanging efficiency is than common
Heat exchanger is high, substantially increases waste heat recovery rate；Heat exchange of heat pipe uses phase-change heat-exchange simultaneously, does not need exchange hot working fluid and provides
Heat transfer process can be completed in extra power；And the inlet water temperature for entering heat exchange of heat pipe cold end is low, and heat transfer temperature difference is big, recuperation of heat
Effect is good, if the blowdown coolant-temperature gage of boiler is 90 DEG C, inflow temperature is 20 DEG C, then heat exchanger heat exchange efficiency is 70%, then per ton
The recyclable heat for being equivalent to 7kg standard coal of sewerage, has not only saved cost, but also heat exchange efficiency is high, working efficiency is fast.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of boiler blowdown water residual neat recovering system.
In figure: 1, heat exchange of heat pipe；2, heat exchanger cold end；3, treatment tank；4, heat exchanger hot end；5, sewerage dilatation
Device；6, boiler；7, oxygen-eliminating device；8, secondary economizer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of boiler blowdown water residual neat recovering system, including boiler 6, oxygen-eliminating device
7, secondary economizer 8, heat exchange of heat pipe 1, sewerage flash vessel 5 and treatment tank 3, after heat exchange of heat pipe 1 will carry out heat exchange
Water inlet be sent into secondary economizer 8, secondary economizer 8 be for increasing the heat absorption intake in heating surface, oxygen-eliminating device 7 be in order to heating
Steam carries out heat exchange deoxygenation, and sewerage flash vessel 5 is for by the steam blowdown decompression and expansion of boiler 6, and treatment tank 3 is
The sewage that boiler 6 is discharged is handled.
Further, heat exchange of heat pipe 1 includes heat exchanger cold end 2 and heat exchanger hot end 4, and heat exchanger cold end 2 is with boiler 6
Water inlet is used as cooling medium, and water inlet and the sewerage of boiler 6 are carried out heat exchange by heat exchanger hot end 4.
Further, heat exchanger hot end 4 is heated by 6 sewerage of boiler, and the blowdown coolant-temperature gage reduction after heat exchange is gone forward side by side
Enter treatment tank 3.
Further, heat exchanger hot end 4 is connected with sewerage flash vessel 5, and heat exchanger cold end 2 is connected with water inlet pipe.
Further, the heat exchanger fin in heat exchange of heat pipe 1 is designed using special fin wing, and heat exchange of heat pipe 1 uses phase
Transformation heat.
Further, steps are as follows for remaining recuperation of heat:
S1: the water inlet of boiler 6 is entered by water inlet pipe by heat exchanger cold end 2, the water inlet by heat exchanger cold end 2 to boiler 6
Water inlet after progress heat exchange is sent into secondary economizer 8 by heating；
S2: after water inlet enters secondary economizer 8, by the heating of secondary economizer 8, increasing the heat absorption intake in heating surface,
It is re-fed into boiler 6, while carrying out heat exchange deoxygenation using the heating steam of oxygen-eliminating device 7 and boiler 6；
S3: using sewerage flash vessel 5 by the sewage of the discharge in boiler 6 the inflow heat exchanger hot end after decompression and expansion
4, the heat of the received sewerage in heat exchanger hot end 4 is transferred heat into water again by heat exchanger cold end 2, to realize
The recycling of heat, and the blowdown coolant-temperature gage after heat exchange is lowered into treatment tank 3.
In the drainage of boiler 6, heat exchange of heat pipe 1 is had additional, the heat exchange of heat pipe 1 is situated between to intake as cooling
Water inlet and sewerage are carried out in heat exchange of heat pipe 1 heat exchange, the i.e. heat of the reception of heat exchanger hot end 4 sewerage, passed through by matter
Heat exchanger cold end 2 is transferred heat into water, to realize the recycling of heat, enhances waste heat recovery rate.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of boiler blowdown water residual neat recovering system, including boiler, oxygen-eliminating device, secondary economizer, heat exchange of heat pipe, sewerage expand
Container and treatment tank, which is characterized in that the water inlet after carrying out heat exchange is sent into secondary economizer, institute by the heat exchange of heat pipe
Stating secondary economizer is for increasing water inlet in the heat absorption of heating surface, and the oxygen-eliminating device is to carry out heat exchange with heating steam and remove
Oxygen, the sewerage flash vessel are for by the steam blowdown decompression and expansion of boiler, the treatment tank is that boiler is discharged
Sewage handled.
2. a kind of boiler blowdown water residual neat recovering system according to claim 1, which is characterized in that the heat exchange of heat pipe
Including heat exchanger cold end and heat exchanger hot end, the heat exchanger cold end is using the water inlet of boiler as cooling medium, by water inlet and pot
The sewerage of furnace carries out heat exchange by heat exchanger hot end.
3. a kind of boiler blowdown water residual neat recovering system according to claim 2, which is characterized in that the heat exchanger hot end
It is heated by boiler blowdown water, the blowdown coolant-temperature gage after heat exchange is lowered into treatment tank.
4. a kind of boiler blowdown water residual neat recovering system according to claim 2, which is characterized in that the heat exchanger hot end
It connects with sewerage flash vessel, heat exchanger cold end is connected with water inlet pipe
5. a kind of boiler blowdown water residual neat recovering system according to claim 1, which is characterized in that the heat exchange of heat pipe
Interior heat exchanger fin is designed using special fin wing, and heat exchange of heat pipe uses phase-change heat-exchange.
6. a kind of boiler blowdown water residual neat recovering system according to claim 1, which is characterized in that remaining recuperation of heat step
It is as follows:
S1: the water inlet of boiler is entered by water inlet pipe by heat exchanger cold end, is heated by heat exchanger cold end to the water inlet of boiler, will be into
Secondary economizer is sent into water inlet after row heat exchange；
S2: after water inlet enters secondary economizer, by the heating of secondary economizer, increase water inlet in the heat absorption of heating surface, be re-fed into
In boiler, while heat exchange deoxygenation is carried out using the heating steam of oxygen-eliminating device and boiler；
S3: the sewerage flash vessel inflow heat exchanger hot end after decompression and expansion, heat exchange by the sewage of the discharge in boiler is utilized
The heat of the received sewerage in device hot end, transfers heat to again by heat exchanger cold end into water, to realize returning for heat
It receives, and the blowdown coolant-temperature gage after heat exchange is lowered into treatment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188644.2A CN109210523A (en) | 2018-10-12 | 2018-10-12 | A kind of boiler blowdown water residual neat recovering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188644.2A CN109210523A (en) | 2018-10-12 | 2018-10-12 | A kind of boiler blowdown water residual neat recovering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109210523A true CN109210523A (en) | 2019-01-15 |
Family
ID=64979602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811188644.2A Pending CN109210523A (en) | 2018-10-12 | 2018-10-12 | A kind of boiler blowdown water residual neat recovering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109210523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979582A (en) * | 2021-11-01 | 2022-01-28 | 青岛海湾化工设计研究院有限公司 | Boiler blowdown waste water recovery treatment equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141606A (en) * | 1996-11-11 | 1998-05-29 | Mitsubishi Heavy Ind Ltd | Boiler plant |
| CN103388817A (en) * | 2013-07-16 | 2013-11-13 | 广西华锐钢铁工程设计咨询有限责任公司 | Residual heat recovery system of sewage water of coke dry quenching boiler |
| CN205137417U (en) * | 2015-10-23 | 2016-04-06 | 西安华江环保科技股份有限公司 | Boiler blow -off waste water heat utilizes device |
| CN209246060U (en) * | 2018-10-12 | 2019-08-13 | 河北超绿节能环保科技有限公司 | A kind of boiler blowdown water residual neat recovering system |
-
2018
- 2018-10-12 CN CN201811188644.2A patent/CN109210523A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141606A (en) * | 1996-11-11 | 1998-05-29 | Mitsubishi Heavy Ind Ltd | Boiler plant |
| CN103388817A (en) * | 2013-07-16 | 2013-11-13 | 广西华锐钢铁工程设计咨询有限责任公司 | Residual heat recovery system of sewage water of coke dry quenching boiler |
| CN205137417U (en) * | 2015-10-23 | 2016-04-06 | 西安华江环保科技股份有限公司 | Boiler blow -off waste water heat utilizes device |
| CN209246060U (en) * | 2018-10-12 | 2019-08-13 | 河北超绿节能环保科技有限公司 | A kind of boiler blowdown water residual neat recovering system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979582A (en) * | 2021-11-01 | 2022-01-28 | 青岛海湾化工设计研究院有限公司 | Boiler blowdown waste water recovery treatment equipment |
| CN113979582B (en) * | 2021-11-01 | 2024-02-27 | 青岛海湾化工设计研究院有限公司 | Boiler blowdown waste water recovery processing equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104048284B (en) | The method of high-temp solid heat recovery waste heat boiler and recovery waste heat | |
| CN104266170A (en) | Comprehensive utilization method of thermal power plant boiler wastewater | |
| CN102432016B (en) | Optimization recovery system for reduction tail gas heat energy in polycrystalline silicon production | |
| CN202955680U (en) | Heat utilization device of boiler blow-down water | |
| CN103776280B (en) | There is the vertical heat exchanger of convex thin tubesheet | |
| CN106398724A (en) | Waste heat recovery device for ascending pipe of coke oven | |
| CN204005897U (en) | High-temp solid heat recovery waste heat boiler | |
| CN209246060U (en) | A kind of boiler blowdown water residual neat recovering system | |
| CN206073764U (en) | A kind of boiler blow-off residual neat recovering system | |
| CN107940437A (en) | A kind of Vaporizing cooling drainage and its method for discharging pollution | |
| CN109210523A (en) | A kind of boiler blowdown water residual neat recovering system | |
| CN206372822U (en) | A kind of reactor heat-energy utilizing device | |
| CN102502703A (en) | Ammonia distillation method for waste heat of coke-oven flue gas and equipment | |
| CN105202932A (en) | Method and device for flue gas waste heat utilization of aluminum oxide roasting furnace | |
| US9963664B2 (en) | Supplying heat to a processing device in a plant for producing beer | |
| CN202349996U (en) | Boiler waste heat recycling device | |
| CN206051600U (en) | A kind of low-temperature evaporation crystal system for processing thermal power plant's high slat-containing wastewater | |
| CN201866753U (en) | Device using heat of boiler sewage to warm up softened water | |
| CN204007253U (en) | A kind of residual neat recovering system | |
| CN103836840B (en) | Shell-and-tube scrubbing scale removal heat-exchange integrated native sewage water heat pump energy lift device | |
| CN104061810A (en) | Waste heat recovery system | |
| CN206257651U (en) | Oxygen-eliminating device discharged steam recovering device | |
| CN205782829U (en) | A kind of boiler feed water scale removal preheating water tank | |
| CN216668401U (en) | Salinization wind system | |
| CN204787260U (en) | Boiler waste heat degree of depth recovery unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |