CN201779643U - Cooling coal economizer for power stations - Google Patents
Cooling coal economizer for power stations Download PDFInfo
- Publication number
- CN201779643U CN201779643U CN 201020502174 CN201020502174U CN201779643U CN 201779643 U CN201779643 U CN 201779643U CN 201020502174 CN201020502174 CN 201020502174 CN 201020502174 U CN201020502174 U CN 201020502174U CN 201779643 U CN201779643 U CN 201779643U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- gas
- low
- economizer
- heat exchanger
- 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 - Fee Related
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a cooling coal economizer for power stations, which belongs to the technical field of power station boiler afterheat recycling energy-saving equipment. The cooling coal economizer consists of a plurality of cooling coal economizer modules with identical structure, each cooling coal economizer module comprises a heat exchange tube bank (2), a supporting plate (3), wall boards (4), communicating tubes (5), a water inlet (1) and a water outlet (6), the heat exchange tube bank (2) comprises heat exchange tubes (201) and a header (202), the periphery of each heat exchange tube (201) is wrapped by the wall boards (4), two ends of each heat exchange tube (201) extend out of the wall boards (4), smoke channels are formed outside the heat exchange tubes (201) in the wall boards (4), ends of the heat exchange tubes (201) are welded with the header (202) to form heat exchange tube bank (2), the heat exchange tube banks (2) are communicated with each other via the communicating pipes (5), a water inlet (1) is disposed on the heat exchange tube bank (2) close to a smoke outlet side, and a water outlet (6) is arranged on the heat exchange tube bank (2) close to a smoke inlet side. The cooling coal economizer can deeply reduce boiler smoke exhaust capacity, recycle heat, reduce water consumption of power plants and effectively prevent chimneys from being corroded.
Description
(1) technical field
The utility model relates to a kind of low low-level (stack-gas) economizer in power station that can the degree of depth reduces the station boiler exhaust gas temperature.Belong to station boiler waste heat recovering energy conserving equipment technical field.
(2) background technology
Dust pelletizing system and desulphurization system have generally all been installed by thermal power plant.Dust pelletizing system is mainly electrostatic precipitation and bag-type dust.The most of limestone/lime one gypsum wet flue gas desulfurizing technology that adopts of desulphurization system.Desulphurization system is arranged on the downstream of dust pelletizing system, enters desulphurization plant behind the flue gas ash removal again and carries out desulfurization.
For fear of the dew point corrosion of dust pelletizing system, the dust pelletizing system exit gas temperature all is higher than 120 ℃.For the efficient that guarantees desulfurization and the security of desulphurization system, the general requirement enters the flue-gas temperature of desulphurization system at 80～90 ℃.
As mentioned above, the flue-gas temperature of coming out through deduster is greater than 120 ℃, and flue gas flue-gas temperature before entering desulphurization system will drop to and is lower than 90 ℃.
Comparatively common in the past way is:
1, uses GGH (flue gas-flue gas heat exchange device), promptly adopt the low-temperature flue gas after the desulphurization system to enter chimney again after high-temperature flue gas before the desulphurization system is lowered the temperature to entering, make the cigarette temperature that enters chimney be improved, but facts have proved that the GGH fault is more, also can not effectively prevent the corrosion of chimney, the heat of flue gas is not absorbed and used simultaneously, and GGH is abandoned by most of power plant gradually.
2, another kind of cool-down method is exactly a spray cooling in flue gas, so not only expends a large amount of water, has also wasted a large amount of heats simultaneously.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, a kind of low low-level (stack-gas) economizer in power station that can be installed between station boiler dust pelletizing system and the desulphurization system is provided, reduces the boiler exhaust gas degree, reclaim heat with the degree of depth, reduce power plant's water consumption, and can effectively prevent the corrosion of chimney.
The purpose of this utility model is achieved in that a kind of power station hangs down low-level (stack-gas) economizer, form by the low low-level (stack-gas) economizer module that several structures are identical, each low low-level (stack-gas) economizer module comprises set of heat exchange tubes, gripper shoe, coaming plate, communicating pipe, water inlet and delivery port, set of heat exchange tubes comprises heat exchanger tube and collection case, heat exchanger tube has many, many heat exchanger tube lateral arrangement, the support and connection of gripper shoe longitudinal separation are on heat exchanger tube, the heat exchanger tube periphery coats with coaming plate, and stretch out outside the coaming plate at the heat exchanger tube two ends, in the coaming plate, heat exchanger tube forms exhaust gases passes outward, many heat exchanger tube ends are welded to connect with the collection case, form set of heat exchange tubes, are communicated with by communicating pipe between each set of heat exchange tubes, near on the set of heat exchange tubes of exhanst gas outlet side water inlet is being set, is setting out the mouth of a river near on the set of heat exchange tubes of gas approach side.
Each low low-level (stack-gas) economizer module water side adopts the set of heat exchange tubes parallel way, makes each low low-level (stack-gas) economizer module water side relatively independent.
Described heat exchanger tube adopts the spiral fin coil of band extended surface.
Flue gas after the station boiler dedusting is cooled in the low low-level (stack-gas) economizer in power station, and flue-gas temperature drops to about 90 ℃ and enters desulfurizing tower.
Water enters the set of heat exchange tubes of flowing through successively from water inlet, is heated in set of heat exchange tubes, feeds to the external world by delivery port.
The beneficial effects of the utility model are:
1, the degree of depth reduces station boiler smoke evacuation degree, reclaims heat, reduces power plant's water consumption.
2, modularization is dispatched from the factory, and guarantees workmanship, reduces the on-site installation work amount.Each low low-level (stack-gas) economizer module water side is relatively independent, in case wherein certain module breaks down, available valve cuts off the use that current do not influence other module.
3, spiral fin coil adopts ND steel (09CrCuSb) material or carbon steel nickel-base seeping layer welder skill to guarantee the wearability and the corrosion resistance against sulfuric acid of heat exchanger tube, guarantees service life.
4, each module water side adopts the set of heat exchange tubes parallel way, can reduce water resistance.
(4) description of drawings
Fig. 1 is the general structure schematic diagram of the low low-level (stack-gas) economizer in the utility model power station.
Fig. 2 is the right side view of Fig. 1.
Fig. 3 is a low low-level (stack-gas) economizer modular structure schematic diagram of the present utility model.
Fig. 4 is a set of heat exchange tubes structural representation of the present utility model.
Fig. 5 is a heat exchange tube structure schematic diagram of the present utility model.
Fig. 6 is the I enlarged drawing of Fig. 5.
Fig. 7 is a workflow schematic diagram of the present utility model.
Reference numeral among the figure:
Water inlet A1, water outlet A2, flue gas advance B1, flue gas goes out B2, access path C, inlet valve D1, flowing water Valve D2.
(5) specific embodiment
Referring to Fig. 1～3, Fig. 1 is the general structure schematic diagram of the low low-level (stack-gas) economizer in the utility model power station.Fig. 2 is the right side view of Fig. 1.Fig. 3 is a low low-level (stack-gas) economizer modular structure schematic diagram of the present utility model.By Fig. 1, Fig. 2 and Fig. 3 as can be seen, low-level (stack-gas) economizer is hanged down in the utility model power station, form by the low low-level (stack-gas) economizer module that several structures are identical, each low low-level (stack-gas) economizer module comprises set of heat exchange tubes 2, gripper shoe 3, coaming plate 4, communicating pipe 5, water inlet 1 and delivery port 6, set of heat exchange tubes 2 comprises heat exchanger tube 201 and collection case 202, as Fig. 4.Heat exchanger tube 201 has many, many heat exchanger tube 201 lateral arrangement, gripper shoe 3 longitudinal separation support and connection are on heat exchanger tube 201, heat exchanger tube 201 is peripheral with coaming plate 4 coatings, and stretch out outside the coaming plate 4 at heat exchanger tube 201 two ends, formation exhaust gases passes in the coaming plate 4, outside the heat exchanger tube 201, many heat exchanger tube 201 ends are welded to connect with collection case 202, form set of heat exchange tubes 2, be communicated with by communicating pipe 5 between each set of heat exchange tubes 2, near on the set of heat exchange tubes 2 of exhanst gas outlet side water inlet 1 is being set, is setting out the mouth of a river 6 near on the set of heat exchange tubes 2 of gas approach side.
Referring to Fig. 5～6, Fig. 5 is a heat exchange tube structure schematic diagram of the present utility model.Fig. 6 is the I enlarged drawing of Fig. 5.Fig. 5 and Fig. 6 as can be seen, described heat exchanger tube 201 adopts the spiral fin coil of band extended surfaces.Spiral fin coil adopts ND steel (09CrCuSb) material or carbon steel nickel-base seeping layer welder skill to make.
Referring to Fig. 7, Fig. 7 is a workflow schematic diagram of the present utility model.As seen from Figure 7, each low low-level (stack-gas) economizer module water side adopts the set of heat exchange tubes parallel way, makes each low low-level (stack-gas) economizer module water side relatively independent.Intake-outlet is controlled by independent valve.
Claims (4)
1. low-level (stack-gas) economizer is hanged down in a power station, it is characterized in that described economizer is made up of the identical low low-level (stack-gas) economizer module of several structures, each low low-level (stack-gas) economizer module comprises set of heat exchange tubes (2), gripper shoe (3), coaming plate (4), communicating pipe (5), water inlet (1) and delivery port (6), set of heat exchange tubes (2) comprises heat exchanger tube (201) and collection case (202), heat exchanger tube (201) has many, many heat exchanger tubes (201) lateral arrangement, gripper shoe (3) longitudinal separation support and connection are on heat exchanger tube (201), heat exchanger tube (201) is peripheral to coat with coaming plate (4), and stretch out outside the coaming plate (4) at heat exchanger tube (201) two ends, in the coaming plate (4), the outer exhaust gases passes that forms of heat exchanger tube (201), many heat exchanger tubes (201) end is welded to connect with collection case (202), form set of heat exchange tubes (2), be communicated with by communicating pipe (5) between each set of heat exchange tubes (2), near on the set of heat exchange tubes (2) of exhanst gas outlet side water inlet (1) is being set, is setting out the mouth of a river (6) near on the set of heat exchange tubes (2) of gas approach side.
2. low-level (stack-gas) economizer is hanged down in a kind of power station according to claim 1, it is characterized in that described each low low-level (stack-gas) economizer module water side adopts the set of heat exchange tubes parallel way.
3. low-level (stack-gas) economizer is hanged down in a kind of power station according to claim 1 and 2, it is characterized in that described heat exchanger tube (201) adopts the spiral fin coil of band extended surface.
4. low-level (stack-gas) economizer is hanged down in a kind of power station according to claim 3, it is characterized in that described spiral fin coil adopts the 09CrCuSb material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020502174 CN201779643U (en) | 2010-08-23 | 2010-08-23 | Cooling coal economizer for power stations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020502174 CN201779643U (en) | 2010-08-23 | 2010-08-23 | Cooling coal economizer for power stations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779643U true CN201779643U (en) | 2011-03-30 |
Family
ID=43792854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020502174 Expired - Fee Related CN201779643U (en) | 2010-08-23 | 2010-08-23 | Cooling coal economizer for power stations |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936522A (en) * | 2010-08-23 | 2011-01-05 | 江苏双良锅炉有限公司 | Low-temperature gas economizer of power station |
| CN107023818A (en) * | 2017-05-22 | 2017-08-08 | 山西中源科扬节能服务有限公司 | Improved cooling coal economizer for power stations |
-
2010
- 2010-08-23 CN CN 201020502174 patent/CN201779643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936522A (en) * | 2010-08-23 | 2011-01-05 | 江苏双良锅炉有限公司 | Low-temperature gas economizer of power station |
| CN107023818A (en) * | 2017-05-22 | 2017-08-08 | 山西中源科扬节能服务有限公司 | Improved cooling coal economizer for power stations |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102407070B (en) | Composite equipment for flue gas waste heat recovery and dust cleaning | |
| CN101140072A (en) | Desulfurize flue gas waste heat recovery system used in fire coal electric generating set | |
| CN106110826B (en) | A kind of flue gas water pumping system of wet desulphurization | |
| CN101875992A (en) | Device and method for removing dust from converter smoke by dry method and recycling waste heat | |
| JP2015525863A (en) | Co-current boiler flue gas residual heat recovery system | |
| CN103697730A (en) | Fast cooler of high-temperature flue gas | |
| CN101706109B (en) | Embedded deep cooler for boiler flue gas | |
| CN203053269U (en) | Flue gas heating device | |
| CN201103915Y (en) | Desulfurized flue gas waste heat recovery system for fire coal generator set | |
| CN201779643U (en) | Cooling coal economizer for power stations | |
| CN201513909U (en) | Boiler fume deep cooler | |
| CN101936522A (en) | Low-temperature gas economizer of power station | |
| CN103542420B (en) | A kind of coal-burning boiler contains heat-exchanger rig and the method for SO3 flue gas | |
| CN103836609A (en) | Power station boiler flue gas and dust emission reduction system | |
| CN204611733U (en) | The recycling system of boiler afterheat | |
| CN108722380B (en) | Powdery desulfurization active coke analysis tower and working method | |
| CN207729640U (en) | A kind of water heat medium formula air preheater with SCR denitration function | |
| CN1908568A (en) | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant | |
| CN205482504U (en) | But fluoroplastics tubular heat exchanger structure that level was placed | |
| CN105889963B (en) | A kind of heat-exchanger rig for wet desulfurization system | |
| CN202562342U (en) | Fin-type double phase steel heat pipe heat exchanger and corresponding flue gas desulfurization equipment | |
| CN202328127U (en) | Smoke waste heat recycling device for coke oven | |
| CN208011750U (en) | Coal fired boiler of power plant smoke discharging residual heat and moisture reclaiming system | |
| CN102614757B (en) | Fin-type double-phase steel heat pipe exchanger and flue gas desulfurization equipment using same | |
| CN203115976U (en) | Novel low-temperature coal economizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20180823 |