CN203489247U - Thermal power plant boiler flue gas waste heat energy-saving system - Google Patents
Thermal power plant boiler flue gas waste heat energy-saving system Download PDFInfo
- Publication number
- CN203489247U CN203489247U CN201320449868.0U CN201320449868U CN203489247U CN 203489247 U CN203489247 U CN 203489247U CN 201320449868 U CN201320449868 U CN 201320449868U CN 203489247 U CN203489247 U CN 203489247U
- Authority
- CN
- China
- Prior art keywords
- air
- flue gas
- cooler
- return pipeline
- water
- 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
Abstract
The utility model provides a thermal power plant boiler flue gas waste heat energy-saving system including an air preheater, an air cooler, a water supply pipeline and a water return pipeline. According to the flowing direction of the hot flue gas, an air outlet of the air preheater is connected with the air cooler used for heat exchange sequentially through an air passage and a hot primary air passage, and the air preheater is also provided with an air inlet. a condensed water tube bundle vertical to wind direction is arranged in the air cooler by means of a fixing frame, one end of the condensed water tube bundle is provided with an inlet container, and the other end of the condensed water tube bundle is provided with an outer container, the outlet of the air cooler is provided with a temperature sensor and an air pressure sensor, the inlet container is connected with the water supply pipeline via a sealing sleeve, the outer container is connected with the water return pipeline via a sealing sleeve, and the water return pipeline is connected with a deoxygenator. The system provided is advantageous in that the boiler flue gas waste heat can be effectively used, and the temperature of the boiler flue gas can be reduced to the design temperature with the help of the system; the boiler flue gas waste heat is used for heating boiler water to save energy for boiler water gasification; and the flue gas after heating the boiler water can be used for the coal dust heating of a pulverizing system of a coal pulverizer.
Description
(1) technical field
The utility model relates to power plant boiler, particularly a kind of power plant boiler fume afterheat energy conserving system.
(2) technical background
The exhaust gas temperature of boiler of power plant design is at present at 120～150 ℃, and the boiler energy loss forming due to exhaust gas temperature is one maximum in all losses of boiler of power plant.The technological approaches that reduces exhaust gas temperature comprises and reduces the flue-gas temperature of (containing air preheater outlet) flue before air preheater outlet and reduce air preheater outlet with the large class of flue-gas temperature two of rear pass.The mature technology that belongs to the former comprises that high-pressure economizer extension, air preheater increase-volume, preheater rotor change direction of rotation, reduce a wind-warm syndrome etc.The mature technology that belongs to the latter comprises low-pressure coal saver, flue gas hot net water etc.In determining an energy-conservation technical reform scheme, when other condition is identical, should be preferably with reducing the air preheater outlet measure of flue-gas temperature in the past.
The technical equipment of any one Mist heat recovering, all can be when producing forward amount of energy saving, the energy consumption that brings certain negative sense, and the principal mode of this consumption is that air-flow pressure drop increase causes that station service changes.From Energy Angle analysis, what good energy-saving technical scheme should be pursued is the clean amount of energy saving that forward amount of energy saving and negative sense consume sum minimum.For power plant, it is the reduction to greatest extent of pursuing supply standard coal consumption rather than generating standard coal consumption.
(3) summary of the invention
The utility model, in order to make up the deficiencies in the prior art, provides a kind of power plant boiler fume afterheat energy conserving system that can make full use of boiler smoke heat, reduce heat waste.
To achieve these goals, technical solution of the present utility model is:
Power plant boiler fume afterheat energy conserving system of the present utility model, it is characterized in that: comprise air preheater, air-cooler, feedwater piping and water return pipeline, according to the trend of hot flue gas, the air outlet slit of air preheater is connected the air-cooler for heat exchange successively with heat primary air passage through air duct, air preheater is also provided with air intake; Air preheater also connects exhaust gases passes; In air-cooler, by fixed frame, being provided with the condensed water vertical with wind direction restrains, condensed water tube bank one end is provided with import header, the other end is provided with outlet header, air-cooler outlet is provided with temperature sensor and baroceptor, import header connects feedwater piping by sealing shroud, outlet header connects water return pipeline by sealing shroud, and water return pipeline connects oxygen-eliminating device.
Feedwater piping is provided with booster, and water return pipeline is provided with control valve.
The gas outlet of air-cooler connects coal pulverizer air inlet through cold-hot wind hybrid chamber; Feedwater piping is all connected low-pressure heater with water return pipeline; The air duct that the air intake of air preheater connects is provided with boiler fan.
The beneficial effects of the utility model are, simple in structure, easy to use, effectively utilize residual heat from boiler fume, help boiler smoke temperature to be reduced to the design temperature of 120～150 ℃.By residual heat from boiler fume heating boiler water, the water after low-pressure heater heating is further heated, while making the heating of boiler water input high-pressure heater, save energy, thereby be boiler water gasification saving energy.Flue gas after heating boiler water, for the coal dust heating of mill coal pulverizer system, makes full use of boiler smoke heat, cuts the waste.
(4) accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.Arrow represents wind direction.
In figure, 1-boiler fan; 2-air preheater; 3-exhaust gases passes; 4-air duct; 5-heat primary air passage; 6-air-cooler; 7-import header; 8-outlet header; 9-feedwater piping; 10-water return pipeline; 15-control valve; 16 boosters; 17-low-pressure heater, 19-oxygen-eliminating device, 20 condensed water tube banks.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Power plant boiler fume afterheat energy conserving system of the present utility model, comprise air preheater 2, air-cooler 6, feedwater piping 9 and water return pipeline 10, according to the trend of hot flue gas, the air outlet slit of air preheater is connected the air-cooler for heat exchange successively with heat primary air passage 5 through air duct 4, air preheater is also provided with air intake; Air preheater also connects exhaust gases passes 3; In air-cooler, by fixed frame, be provided with the condensed water tube bank 20 vertical with wind direction, condensed water tube bank one end is provided with import header 7, the other end is provided with outlet header 8, air-cooler outlet is provided with temperature sensor and baroceptor, import header connects feedwater piping 9 by sealing shroud, outlet header connects water return pipeline 10 by sealing shroud, and water return pipeline connects oxygen-eliminating device 19.
Feedwater piping is provided with booster 16, and water return pipeline is provided with control valve 15.
The gas outlet of air-cooler connects coal pulverizer air inlet through cold-hot wind hybrid chamber; Feedwater piping is all connected low-pressure heater 17 with water return pipeline; The air duct that the air intake of air preheater connects is provided with boiler fan 1.
Air-cooler is as heat balance device, be installed on after air preheater outlet, in the heat primary air road before coal pulverizer air inlet, by Gei Shui manage ﹑ water return pipeline, booster is connected with the main condensate pipeline of steam turbine back heating system.
Heat primary air in heat primary air passage 5 is after air-cooler 6 is cooling, and temperature is reduced to 230 ℃ from 320 ℃ and enters coal pulverizer.It can make mill coal pulverizer system reduce to mix the produced clean amount of energy saving that leaks out to maximize.The cooling water inflow that flows through air-cooler 6 remains unchanged all the time or slightly adjusts, and avoids the interior appearance vaporization of feedwater piping 9 and water return pipeline 10 and water attack.
Claims (3)
1. a power plant boiler fume afterheat energy conserving system, it is characterized in that: comprise air preheater, air-cooler, feedwater piping and water return pipeline, according to the trend of hot flue gas, the air outlet slit of air preheater is connected the air-cooler for heat exchange successively with heat primary air passage through air duct, air preheater is also provided with air intake; Air preheater also connects exhaust gases passes; In air-cooler, by fixed frame, being provided with the condensed water vertical with wind direction restrains, condensed water tube bank one end is provided with import header, the other end is provided with outlet header, air-cooler outlet is provided with temperature sensor and baroceptor, import header connects feedwater piping by sealing shroud, outlet header connects water return pipeline by sealing shroud, and water return pipeline connects oxygen-eliminating device.
2. power plant boiler fume afterheat energy conserving system according to claim 1, is characterized in that: feedwater piping is provided with booster, and water return pipeline is provided with control valve.
3. power plant boiler fume afterheat energy conserving system according to claim 1 and 2, is characterized in that: the gas outlet of air-cooler connects coal pulverizer air inlet through cold-hot wind hybrid chamber; Feedwater piping is all connected low-pressure heater with water return pipeline; The air duct that the air intake of air preheater connects is provided with boiler fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449868.0U CN203489247U (en) | 2013-07-26 | 2013-07-26 | Thermal power plant boiler flue gas waste heat energy-saving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449868.0U CN203489247U (en) | 2013-07-26 | 2013-07-26 | Thermal power plant boiler flue gas waste heat energy-saving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203489247U true CN203489247U (en) | 2014-03-19 |
Family
ID=50260078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320449868.0U Expired - Lifetime CN203489247U (en) | 2013-07-26 | 2013-07-26 | Thermal power plant boiler flue gas waste heat energy-saving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203489247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526598A (en) * | 2016-01-26 | 2016-04-27 | 华北电力大学 | Low-exergy-loss bypass type primary air temperature regulating system |
-
2013
- 2013-07-26 CN CN201320449868.0U patent/CN203489247U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526598A (en) * | 2016-01-26 | 2016-04-27 | 华北电力大学 | Low-exergy-loss bypass type primary air temperature regulating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204730303U (en) | The heating system of the 12MW small cogeneration unit under a kind of underrun operating mode | |
| CN203431902U (en) | Smoke system reducing exhaust smoke temperature of secondary reheating boiler | |
| CN105156160B (en) | A kind of front end processor is combined the through-flow parameter optimization of main steam turbine and carries effect peak regulation system | |
| CN203431914U (en) | Flue gas system using air pre-heater of quartered-sector structure to reduce exhaust gas temperature of secondary reheating boiler | |
| CN104006401B (en) | The degree of depth of boiler of power plant fume afterheat is recycled and emission-reducing system | |
| CN104819054A (en) | Distributed energy resource waste heat utilization system | |
| CN102997309A (en) | Classification heating system with high-temperature heat source heater bypass pipe | |
| CN106322357A (en) | Thermal power generation system based on boiler tail bypass flue | |
| CN205137624U (en) | Boiler waste heat heating system economizer | |
| CN103628985A (en) | System for heating natural gas by using waste heat of waste heat boiler in gas turbine power plant | |
| CN204704010U (en) | A kind of bootstrap system of distributed energy | |
| CN210483828U (en) | Energy-saving power generation and utilization system utilizing exhaust steam waste heat of steam turbine of thermal power plant | |
| CN205717147U (en) | A kind of full load denitration utilizes and air preheater corrosion-and blocking-prevention coupled system with fume afterheat | |
| CN102494329B (en) | Device for utilizing flue gas waste heat of boiler comprehensively | |
| CN203489247U (en) | Thermal power plant boiler flue gas waste heat energy-saving system | |
| CN203336572U (en) | Bypass economizer used for comprehensive utilization of flue gas waste heat | |
| CN204665244U (en) | A kind of association system of phase-change heat-exchanger band heat exchangers for district heating | |
| CN206608968U (en) | A kind of power plant's heat reclaiming system | |
| CN201819573U (en) | Sintering machine exhaust gas waste heat power generation system | |
| CN109099498A (en) | It is a kind of to couple the technique and method for generating thermoelectricity decoupling by coal dust firing flue gas shunting | |
| CN201417093Y (en) | Heat recovery system of waste heat boiler for glass production line | |
| CN105508055B (en) | The system and method for distributed busbar protection cooling circulating water | |
| CN203489248U (en) | Thermal power plant boiler flue gas waste heat energy-saving system | |
| CN209431389U (en) | A kind of waste incineration and generating electricity heat energy recycling system of air compressor | |
| CN208042106U (en) | A kind of coal gas high-temperature high-voltage power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG YINGDIAN ENERGY SAVING TECHNOLOGY CO., LT Free format text: FORMER OWNER: JI'NAN HIPOWER TECHNOLOGY CO., LTD. Effective date: 20140410 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 250100 JINAN, SHANDONG PROVINCE TO: 250000 JINAN, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140410 Address after: 250000 Shandong city of Ji'nan province high tech Zone Shun Road No. 1 Building No. 5, Qilu Software Park (Business Plaza E block, room A515) Patentee after: SHANDONG YINGDIAN ENERGY SAVING TECHNOLOGY CO.,LTD. Address before: 250100 Shandong Province, Ji'nan City Xinyu High-tech Development Zone on the west side of the road century wealth center block AB room 602 Patentee before: JINAN HIPOWER TECHNOLOGY Co.,Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160415 Address after: 250000 Shandong city of Ji'nan province high tech Zone Shun Road No. 109 Department of building 302-1 Patentee after: SHANDONG ECO-POWER TECHNOLOGY CO.,LTD. Address before: 250000 Shandong city of Ji'nan province high tech Zone Shun Road No. 1 Building No. 5, Qilu Software Park (Business Plaza E block, room A515) Patentee before: SHANDONG YINGDIAN ENERGY SAVING TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |