CN203099883U - Smoke waste heat utilization device of boiler water heating medium control and circulation type air preheater - Google Patents
Smoke waste heat utilization device of boiler water heating medium control and circulation type air preheater Download PDFInfo
- Publication number
- CN203099883U CN203099883U CN2013200229261U CN201320022926U CN203099883U CN 203099883 U CN203099883 U CN 203099883U CN 2013200229261 U CN2013200229261 U CN 2013200229261U CN 201320022926 U CN201320022926 U CN 201320022926U CN 203099883 U CN203099883 U CN 203099883U
- Authority
- CN
- China
- Prior art keywords
- air preheater
- heating surface
- convection heating
- type air
- medium control
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
Abstract
The utility model relates to the technical field of waste heat utilization of boiler exhausted smoke, in particular to a smoke waste heat utilization device of a boiler water heating medium control and circulation type air preheater, wherein the smoke waste heat utilization device of the boiler water heating medium control and circulation type air preheater is suitable for a power station boiler with a steam pocket. The smoke waste heat utilization device comprises the boiler water heating medium control and circulation type air preheater and a tail portion smoke channel convection heating surface. The upper portion of the boiler water heating medium control and circulation type air preheater is connected with a descending guide tube through an inlet collecting box of the air preheater, and the lower portion of the boiler water heating medium control and circulation type air preheater is connected with a circulation pump with a frequency converter through an outlet collecting box of the air preheater and a circulation pipeline. The tail portion smoke channel convection heating surface is arranged in a vertical smoke channel, and the lower portion of the tail portion smoke channel convection heating surface is connected with the circulation pipeline through a convection heating surface inlet collecting box. The upper portion of the convection heating surface is communicated with an ascending guide tube through the convection heating surface outlet collecting box, a thermometric indicator is arranged on the convection heating surface inlet collecting box, and a self-control device is connected between the thermometric indicator and the circulation pump with the frequency converter. The smoke waste heat utilization device of the boiler water heating medium control and circulation type air preheater can effectively improve heating efficiency of a boiler.
Description
Technical field
The utility model relates to boiler exhaust gas UTILIZATION OF VESIDUAL HEAT IN technical field, is specifically related to a kind ofly be applicable to that the pot hydro-thermal matchmaker of station boiler of band drum controls circulating air preheater fume afterheat use device.
Background technology
Heated surface at the end of boiler adopts economizer to add the version of air preheater usually, and its advantage is preheating air-supply when reducing heat loss due to exhaust gas, improves fire box temperature, has improved burning.But this traditional boiler tail is subjected to heat structure that two drawbacks are arranged.One, air preheater are that flue gas is direct by metal heated and air-supply heat exchange, the inevitable existence because of leaking out that cold end corrosion, wearing and tearing or structure interval cause, promptly influence boiler output, and causing rousing the air inducing power consumption again increases; Its two, on the one hand, because the existence of cold end corrosion, it is lower that the exhaust gas temperature of boiler can't design, heat loss due to exhaust gas can not further reduce; On the other hand, reason causes the boiler operatiopn actual exhaust gas temperature to be higher than design load far away because the variation of coal, heating surface area be big etc.At present, in order to solve the too high problem of exhaust gas temperature, people utilize technology such as horizontal type phase-change heat exchanger, low-pressure coal saver and complex phase-change heat exchanger that heated surface at the end of boiler is transformed.Though can reduce exhaust gas temperature significantly after transforming, even be lower than design load, but since reduce heat that exhaust gas temperature reclaims without exception be used for heat-setting water or demineralized water, squeeze low add or oxygen-eliminating device draws gas that what enter the steam turbine acting is the lower steam of quality, available energy is very low, and it is not remarkable to cause unit efficiency to improve.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned shortcoming and provides a kind of pot of hydro-thermal matchmaker to control circulating air preheater fume afterheat use device.
The technical solution of the utility model is achieved in that a kind of pot of hydro-thermal matchmaker controls circulating air preheater fume afterheat use device, this device comprises that a pot hydro-thermal matchmaker controls circulating air preheater and back-end ductwork convection heating surface, pot hydro-thermal matchmaker controls circulating air preheater top and links to each other with the decline conduit by air preheater inlet header case, the bottom is connected with the circulating pump that has frequency converter through circulating line by air preheater outlet collection case, the back-end ductwork convection heating surface is installed in the vertical flue, its underpart is connected with circulating line by convection heating surface inlet header case, top is connected with riser duct by convection heating surface outlet collection case, on the convection heating surface inlet header case temperature instrumentation is installed, temperature instrumentation and have between the circulating pump of frequency converter and be connected with self-con-tained unit, the temperature signal control and regulation that self-con-tained unit records by temperature instrumentation have the revolution of the circulating pump of frequency converter.
The described import and export that has the circulating pump of frequency converter is separately installed with before the pump valve behind the valve and pump.
The beneficial effects of the utility model are: no matter device of the present invention is air preheater or tail flue gas convection heating surface, all is the aqueous vapor heat exchange, because the coefficient of heat transfer of water side is higher than the gas side far away, just can improve whole heat transfer coefficient so only need strengthen the heat exchange of gas side.The augmentation of heat transfer of spiral fin coil, H type finned tube all has been a mature technique comparatively, has been widely used on boiler economizer, low-pressure coal saver, horizontal type phase-change heat exchanger and the complex phase-change heat exchanger, and has obtained good effect.Utilize device of the present invention, 20 ℃～40 ℃ cooling extent is arranged usually, can improve boiler thermal output 1.5%～3%.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
A kind of pot of hydro-thermal matchmaker controls circulating air preheater fume afterheat use device, this device comprises that a pot hydro-thermal matchmaker controls circulating air preheater 1 and back-end ductwork convection heating surface 8, pot hydro-thermal matchmaker controls circulating air preheater 1 top and links to each other with decline conduit 14 by air preheater inlet header case 13, the bottom is connected with the circulating pump 5 that has frequency converter through circulating line 3 by air preheater outlet collection case 2, back-end ductwork convection heating surface 8 is installed in the vertical flue, its underpart is connected with circulating line 3 by convection heating surface inlet header case 7, top is connected with riser duct 10 by convection heating surface outlet collection case 9, on the convection heating surface inlet header case 7 temperature instrumentation 11 is installed, temperature instrumentation 11 and have between the circulating pump 5 of frequency converter and be connected with self-con-tained unit 12, the temperature signal control and regulation that self-con-tained unit 12 records by temperature instrumentation 11 have the revolution of the circulating pump 5 of frequency converter.
The described import and export that has the circulating pump 5 of frequency converter is separately installed with before the pump valve 6 behind the valve 4 and pump.
When pot of the present utility model hydro-thermal matchmaker controls circulating air preheater fume afterheat use device operation, can set the coolant-temperature gage of back-end ductwork convection heating surface inlet header case 7 according to flue gas acid dew point, self-con-tained unit 12 will be regulated the water circular flow by the revolution that adjusting has a circulating pump 5 of frequency converter.The water circular flow increases, the outlet temperature of then blowing and the inlet water temperature degree rising that enters back-end ductwork convection heating surface 8, and exhaust gas temperature also increases; Otherwise said temperature then reduces.Therefore by regulating the flow that control has the circulating pump 5 of frequency converter, can effectively regulate control back-end ductwork convection heating surface 8 minimum wall temperatures and exhaust gas temperature and be in setting range, under the prerequisite that guarantees safe operation of the boiler, reduce exhaust gas temperature significantly.Because apparatus of the present invention reclaim the water of fume afterheat heating and turn back to again in the drum, recovery waste heat directly enters steam generator system inside, has directly improved the thermal efficiency of boiler.
Claims (2)
1. a pot hydro-thermal matchmaker controls circulating air preheater fume afterheat use device, it is characterized in that: this device comprises that a pot hydro-thermal matchmaker controls circulating air preheater (1) and back-end ductwork convection heating surface (8), pot hydro-thermal matchmaker controls circulating air preheater (1) top and links to each other with decline conduit (14) by air preheater inlet header case (13), the bottom is connected with the circulating pump that has frequency converter (5) through circulating line (3) by air preheater outlet collection case (2), back-end ductwork convection heating surface (8) is installed in the vertical flue, its underpart is connected with circulating line (3) by convection heating surface inlet header case (7), top is connected with riser duct (10) by convection heating surface outlet collection case (9), temperature instrumentation (11) is installed on the convection heating surface inlet header case (7), temperature instrumentation (11) and have between the circulating pump (5) of frequency converter and be connected with self-con-tained unit (12), the temperature signal control and regulation that self-con-tained unit (12) records by temperature instrumentation (11) have the revolution of the circulating pump (5) of frequency converter.
2. pot according to claim 1 hydro-thermal matchmaker controls circulating air preheater fume afterheat use device, it is characterized in that: the import and export that has a circulating pump (5) of frequency converter is separately installed with before the pump valve (6) behind the valve (4) and pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200229261U CN203099883U (en) | 2013-01-17 | 2013-01-17 | Smoke waste heat utilization device of boiler water heating medium control and circulation type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200229261U CN203099883U (en) | 2013-01-17 | 2013-01-17 | Smoke waste heat utilization device of boiler water heating medium control and circulation type air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203099883U true CN203099883U (en) | 2013-07-31 |
Family
ID=48851281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200229261U Expired - Lifetime CN203099883U (en) | 2013-01-17 | 2013-01-17 | Smoke waste heat utilization device of boiler water heating medium control and circulation type air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203099883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047675A (en) * | 2013-01-17 | 2013-04-17 | 张志宇 | Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater |
-
2013
- 2013-01-17 CN CN2013200229261U patent/CN203099883U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047675A (en) * | 2013-01-17 | 2013-04-17 | 张志宇 | Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater |
| CN103047675B (en) * | 2013-01-17 | 2015-06-17 | 张志宇 | Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204739568U (en) | Energy saving and emission reduction system that horizontal phase transition heat exchanger and prefix type hydrophily formula GGH unite | |
| CN203431914U (en) | Flue gas system using air pre-heater of quartered-sector structure to reduce exhaust gas temperature of secondary reheating boiler | |
| CN104964265A (en) | Energy-saving emission reduction system and energy-saving emission reduction method of horizontal type phase change heat exchanger and front-arrangement type water medium type GGH combined | |
| CN103471084B (en) | Low-pressure hot-water smoke cooling system and method for avoiding low-temperature corrosion of air pre-heater | |
| CN202791972U (en) | Boiler tail flue gas waste heat utilization system | |
| CN203771380U (en) | Condensation waste heat recovery steam boiler | |
| CN202229164U (en) | Condensing type steam boiler energy-saving heating device | |
| CN102966941A (en) | Waste heat recovery system with combined phase change heat exchanger and low pressure economizer | |
| CN201289067Y (en) | Hot pipe combined exhaust heat boiler | |
| CN100520268C (en) | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant | |
| CN204665244U (en) | A kind of association system of phase-change heat-exchanger band heat exchangers for district heating | |
| CN203099883U (en) | Smoke waste heat utilization device of boiler water heating medium control and circulation type air preheater | |
| CN205048411U (en) | Gas boiler | |
| CN202947122U (en) | Combined waste heat recovery system of phase change heat exchanger and low-pressure economizer | |
| CN206608968U (en) | A kind of power plant's heat reclaiming system | |
| CN202158578U (en) | Composite water circulation heat exchanger with function of exchanging heat and heating air for three times | |
| CN202074505U (en) | Heat-conducting oil furnace tial-gas waste heat heating condensed water device | |
| CN105888755B (en) | A kind of composite work medium thermal power generation system and method for work | |
| CN103047675B (en) | Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater | |
| CN204962841U (en) | Energy -conserving anticorrosive type boiler low temperature waste heat from flue gas recovery unit | |
| CN104832908A (en) | Combination system and combination method for phase-change heat exchanger with heating network heater | |
| CN201289066Y (en) | Hot pipe combined medium-pressure exhaust heat boiler | |
| CN203431900U (en) | Smoke cooling and air heating device of power station boiler | |
| CN107345656A (en) | A kind of steam raising plant using residual heat from boiler fume | |
| CN202074503U (en) | Energy-saving coal economizer for boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yangzhou Xia Kang Environmental Protection Technology Co., Ltd. Assignor: Zhang Zhiyu Contract record no.: 2014320000690 Denomination of utility model: Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater Granted publication date: 20130731 License type: Exclusive License Record date: 20141015 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20150617 |
|
| RGAV | Abandon patent right to avoid regrant |