CN203656913U - 350MW supercritical circulating fluidized bed boiler - Google Patents
350MW supercritical circulating fluidized bed boiler Download PDFInfo
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- CN203656913U CN203656913U CN201320748162.4U CN201320748162U CN203656913U CN 203656913 U CN203656913 U CN 203656913U CN 201320748162 U CN201320748162 U CN 201320748162U CN 203656913 U CN203656913 U CN 203656913U
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Abstract
The utility model discloses a 350MW supercritical circulating fluidized bed boiler. The fluidized bed boiler in China has a later start; although the China is a country with the fluidized bed boilers with the maximum capacity, the fluidized bed boilers are generally low in capacity. The 350MW supercritical circulating fluidized bed boiler comprises a single furnace hearth, wherein three steam-cooling separators (2) are arranged on the rear side of the furnace hearth; the single furnace hearth is connected with a separator inlet flue (3); the separator inlet flue is connected with the steam-cooling separator; the steam-cooling separator is connected with a separator outlet flue (4); the separator outlet flue is connected with two tail convection flues (5); a medium-temperature screen type overheater (6) and a high-temperature screen type reheater (7) are arranged in the single furnace hearth; the single furnace hearth is connected with an air channel combustor (8), a slag cooler (9) and a material return valve (10) respectively; the steam-cooling separator is connected with the material return valve; the two tail convection flues are connected with an economizer (14); an air preheater (15) is arranged on the lower part of the economizer. The 350MW supercritical circulating fluidized bed boiler is used for supplying power to a thermal power plant.
Description
technical field:
the utility model relates to a kind of 350MW supercritical circulating fluidized bed boiler.
background technology:
fluidized-bed combustion boiler technology demonstrates its good environmental emission characteristic, and its cost of polluting control is that other technology is irreplaceable at present.Although the fluidized-bed combustion boiler technology of China is started late, through develop rapidly in recent years, become the maximum country of fluidized-bed combustion boiler installed capacity, but generally on the low side from capacity.For this situation, China formally introduces the 300MW of ALSTOM company grade recycle fluidized-bed combustion boiler technology from China in 2003, and the fluidized-bed combustion boiler of China walks with world's pace on capacity since then.The restriction of being introduced technology, cannot exploit the overseas market.For better product is provided to domestic user, optimize the structure of production, and exploit the overseas market, develop large volume flow fluidized bed boiler more advanced, that tally with the national condition imperative.350MW supercritical circulating fluidized bed boiler is the fluid bed product between 300MW Subcritical Units and 600MW supercritical unit, generating efficiency and 600MW supercritical unit maintain an equal level, and Coal-fired capacity is only a little more than 300MW Subcritical Units, belong to the high efficiency fluidization of low fuel consumption.
utility model content:
the purpose of this utility model is to provide a kind of 350MW supercritical circulating fluidized bed boiler.
above-mentioned object realizes by following technical scheme:
a kind of 350MW supercritical circulating fluidized bed boiler, its composition comprises: single burner hearth, at described burner hearth rear side, three cold separators of vapour are installed, described single burner hearth is connected with separator inlet flue, described separator inlet flue is connected with the described cold separator of vapour, the cold separator of described vapour is connected with separator outlet flue, described separator outlet flue is connected with afterbody convection current twin flue, middle temperature pendant superheater is installed in described single burner hearth, high temperature screen formula reheater, described single burner hearth respectively with in-duct burner, slag cooler, material returning valve connects, the cold separator of described vapour is connected with described material returning valve, described afterbody convection current twin flue is connected with economizer, described economizer bottom is provided with air preheater.
described 350MW supercritical circulating fluidized bed boiler, described single burner hearth comprises combustion chamber, the evaporating heating surface of described combustion chamber comprises fin panel casing, water-cooling screen structure, single water-cooled distributor, major diameter bell-type windshield are equipped with in described bottom, combustion chamber, and described single burner hearth is connected by gas approach with described separator.
described 350MW supercritical circulating fluidized bed boiler, the cold separator of described vapour comprises membrane wall shell, described membrane wall outer casing inner wall scribbles wearing-proof refractory material layer, the cold separator of described vapour top is cylindrical shape part, the cold separator of described vapour bottom is tapering part, the cold separator of described vapour bottom is connected with described material returning valve, described material returning valve is connected with returning charge leg, described material returning valve is self-balancing type on-mechanical type material returning valve, described material returning valve bottom is connected with high pressure positive blower, described material returning valve comprises material returning valve outer cover of steel plate, described material returning valve outer cover of steel plate is connected with liner insulation material layer, described liner insulation material layer is connected with described wearing-proof refractory material layer, described liner insulation material layer and described wearing-proof refractory material layer pass through drag hook, bitch and support are fixed on described material returning valve outer cover of steel plate.
described 350MW supercritical circulating fluidized bed boiler, described afterbody convection current twin flue is provided with the mid-board superheater that described afterbody convection current twin flue is divided into front flue and rear pass, in described front flue, low-temperature reheater is installed, below described low-temperature reheater, be furnished with economizer A, two-stage superheater system is installed in described rear pass, economizer B, described two-stage superheater system comprises high temperature superheater, low temperature superheater, below described high temperature superheater, arrange described low temperature superheater, below described low temperature superheater, arrange described economizer B, described afterbody convection current twin flue top is coated with membrane type enclosure wall superheater, described afterbody convection current twin flue bottom is single flue, described single flue lower disposed has described air preheater, described economizer adopts H type economizer in-line arrangement or light pipe in-line arrangement, described air preheater adopts tubular air preheater or rotary preheater.
described 350MW supercritical circulating fluidized bed boiler, superheater system is made up of described membrane type enclosure wall superheater, described low temperature superheater, described middle temperature pendant superheater, described high temperature superheater, being furnished with one-level direct-contact desuperheater on pipeline between described low temperature superheater and described middle temperature pendant superheater, between described middle temperature pendant superheater and described high temperature superheater, on pipeline, be furnished with secondary direct-contact desuperheater; Described middle temperature pendant superheater is arranged in described single burner hearth, and described low temperature superheater and described high temperature superheater are arranged in the back-end ductwork of described afterbody convection current twin flue.
beneficial effect:
1. the utility model adopts water-cooled distributor, major diameter bell-type windshield, have cloth wind evenly, anti-clogging, anti-coking and be convenient to maintenance.
2. in burner hearth of the present utility model, arrange high temperature screen formula reheater and middle temperature pendant superheater, amass with the radiation heating-surface that increases superheater system and reheater system, make overheating steam temperature and reheat steam temperature there is good control characteristic.
combustion chamber of the present utility model and twin flue bag wall all the horizontal band-wound rigid beam of employing prevent the distortion that inside and outside differential pressure effect causes.
4. the utility model boiler is provided with Expansion Center, the junction of each several part flue gas, material arranges the non-metal expansion joint of excellent performance, solved the three-dimensional expansion problem being caused by thermal walking, each heating surface position through walls all adopts ripe Sealing Technology design, guarantees the excellent sealing of boiler.
5. the utility model CFBC is sent into combustion chamber with wind classification, to reduce the growing amount of NOx, except a wind of sending into from air distribution plate, also introduce Secondary Air from bottom, combustion chamber cone section point two layers of differing heights, desulfurizing agent adopts lime stone, divide send into material returning valve battered leg at 8 with pneumatic conveying mode, Fen Balu enters burner hearth, and combustion efficiency is good.
6. the utility model boiler startup adopts the upper Starting mode that starts burner and Induct burner combination of bed, starts with oil to save; Under bed, be furnished with two startup burners (hot smoke chest), on bed, arrange eight startup burners.
boiler of the present utility model except in combustion chamber, the relevant position such as separator, material returning valve arranges nonmetal fire-resistant anti-wear material, also take the measure of metal material abrasionproof at relevant positions such as afterbody convection heating surface, combustion chambers, moved continuously with effective guarantee boiler safety.
8. boiler of the present utility model adopts a fixed form of hanging combination, and slag cooler and Air preheater are supporting construction, and material returning valve hangs combination for propping up, and all the other are overhung construction.
9. air distribution plate rear side deslagging of the present utility model, is very beneficial for coal supply and residue extraction mechanism and arranges.Coal supply feeds from front wall, and end slag is discharged from rear wall, has guaranteed that like this slag-drip opening is away from coal feeding hole, has effectively prevented that coal supply from directly entering slag cooler, is conducive to reduce carbon content in the bottom ash, improves efficiency of combustion,
10. the utility model adopts curtain wall to replace the structure of original external heat exchanger, does not adopt external heat exchanger, and whole steam generator system is simple, is conducive to designing institute power plant system is effectively arranged; Reheater has adopted the mode of damper adjustment, mature and reliable;
11. large capacity of the present utility model put into operation without outer heat exchanger recirculating fluidized bed, and the risk level of controlling in debugging, operation can be controlled in lowest range; Reduce the thermal inertia under the operating mode such as boiler start/ stop and removal of load, MFT, also without accessory systems such as emergency water compensatings with high investment, more favourable to the protection of heating surface.
12. superheaters of the present utility model and reheater system have all adopted the arrangement of convection current+radiation, and compared with the arrangement of simple employing convection heating surface, the variation of Steam Temperature for Boiler in larger load range is less.Why take such arrangement, mainly to consider in the time that boiler load changes, convection superheater (reheater) is contrary with the steam temperature variation characteristic of radiation superheater (reheater), in convection superheater, along with load increases, the enthalpy of steam increases, and the outlet steam temperature of convection superheater will increase; And just in time contrary in radiation superheater, along with the increase of boiler load, because smoke temperature change in burner hearth is little, radiant heat transfer amount increases few, do not catch up with the increase of steam flow, thereby make the enthalpy increase and decrease of working medium little, therefore decline with the outlet steam temperature of the increase radiation superheater of boiler load.In the time carrying out superheater (reheater) system, adopt radiation to combine with convection current, and take suitable caloric receptivity ratio, make overheating steam temperature and reheat steam temperature all there is temperature characterisitic more stably, guarantee the stable operation of boiler under various operating modes.
13. the utility model are according to the feature of two air distributor structure burner hearths, slag cooler is arranged in the middle of burner hearth, coal feeding hole is arranged in burner hearth outside, can prevent coal supply and deslagging short circuit, be conducive to reduce carbon content in the bottom ash, improve efficiency of combustion, this is another innovative point that roller slag cooler is combined with two air distribution plates.
14. the utility model adopt " H " type economizer to have abrasionproof, reliability and comprehensive economic performance advantages of higher, meanwhile, can meet long-term safety operation completely.
15. the utility model adopt H type to arrange the brand-new layout of adjusting reheater steam temperature to combine with twin flue baffle plate, adopt roller slag cooler simultaneously, and air distribution plate rear side deslagging is cancelled external bed, arrange curtain wall in burner hearth.
the steam/water circulating method of 16. 350MW supercritical circulating fluidized bed boilers is as described below: burner hearth, the cold separator of vapour, material returning valve form the core of CFBB, it is material soft circulation circuit, coal and lime stone complete burning and desulphurization reaction in combustion chamber, the flue gas producing enters respectively three cold separators of vapour, carry out gas-solid two and be separated, the flue gas purifying through separator enters back-end ductwork; Boiler feedwater is sent into water-cooling wall after economizer preheating, after water-cooling wall, introduces water-cooling screen by tube connector, sends in 2 steam-water separators after being heated into superheated steam, then introduces in superheating system; First be introduced into the cold separator of vapour from steam-water separator superheated steam out, then be incorporated into the enclosure wall superheater of afterbody convection pass through tube connector, then be incorporated into afterbody low temperature superheater through tube connector, enter screen formula medium temperature overheater from low temperature superheater superheated steam out, finally be incorporated into afterbody high temperature superheater, be heated to rated temperature in high temperature superheater after, draw boiler, enter steam turbine high-pressure cylinder.
accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present utility model.
accompanying drawing 2 is steam and feed flow diagrams of accompanying drawing 1.In figure, 16 is water-cooling screen, and 17 is separator, and 18 is cyclone separator.
the specific embodiment:
embodiment 1:
a kind of 350MW supercritical circulating fluidized bed boiler, its composition comprises: single burner hearth 1, at described burner hearth rear side, three cold separators 2 of vapour are installed, described single burner hearth is connected with separator inlet flue 3, described separator inlet flue is connected with the described cold separator of vapour, the cold separator of described vapour is connected with separator outlet flue 4, described separator outlet flue is connected with afterbody convection current twin flue 5, middle temperature pendant superheater 6 is installed in described single burner hearth, high temperature screen formula reheater 7, described single burner hearth respectively with in-duct burner 8, slag cooler 9, material returning valve 10 connects, the cold separator of described vapour is connected with described material returning valve, described afterbody convection current twin flue is connected with economizer 14, described economizer bottom is provided with air preheater 15.
embodiment 2:
according to the 350MW supercritical circulating fluidized bed boiler described in embodiment 1, described single burner hearth comprises combustion chamber, the evaporating heating surface of described combustion chamber comprises fin panel casing, water-cooling screen structure, single water-cooled distributor, major diameter bell-type windshield are equipped with in described bottom, combustion chamber, and described single burner hearth is connected by gas approach with described separator.
embodiment 3:
according to the 350MW supercritical circulating fluidized bed boiler described in embodiment 1 or 2, the cold separator of described vapour comprises membrane wall shell, described membrane wall outer casing inner wall scribbles wearing-proof refractory material layer, the cold separator of described vapour top is cylindrical shape part, the cold separator of described vapour bottom is tapering part, the cold separator of described vapour bottom is connected with described material returning valve, described material returning valve is connected with returning charge leg, described material returning valve is self-balancing type on-mechanical type material returning valve, described material returning valve bottom is connected with high pressure positive blower, described material returning valve comprises material returning valve outer cover of steel plate, described material returning valve outer cover of steel plate is connected with liner insulation material layer, described liner insulation material layer is connected with described wearing-proof refractory material layer, described liner insulation material layer and described wearing-proof refractory material layer pass through drag hook, bitch and support are fixed on described material returning valve outer cover of steel plate.
embodiment 4:
according to the 350MW supercritical circulating fluidized bed boiler described in embodiment 1 or 2 or 3, described afterbody convection current twin flue is provided with the mid-board superheater that described afterbody convection current twin flue is divided into front flue and rear pass, in described front flue, low-temperature reheater 11 is installed, below described low-temperature reheater, be furnished with economizer A, two-stage superheater system is installed in described rear pass, economizer B, described two-stage superheater system comprises high temperature superheater 12, low temperature superheater 13, below described high temperature superheater, arrange described low temperature superheater, below described low temperature superheater, arrange described economizer B, described afterbody convection current twin flue top is coated with membrane type enclosure wall superheater, described afterbody convection current twin flue bottom is single flue, described single flue lower disposed has described air preheater, described economizer adopts H type economizer in-line arrangement or light pipe in-line arrangement, described air preheater adopts tubular air preheater or rotary preheater.
embodiment 5:
according to the 350MW supercritical circulating fluidized bed boiler described in embodiment 1 or 2 or 3 or 4, superheater system is made up of described membrane type enclosure wall superheater, described low temperature superheater, described middle temperature pendant superheater, described high temperature superheater, being furnished with one-level direct-contact desuperheater on pipeline between described low temperature superheater and described middle temperature pendant superheater, between described middle temperature pendant superheater and described high temperature superheater, on pipeline, be furnished with secondary direct-contact desuperheater; Described middle temperature pendant superheater is arranged in described single burner hearth, and described low temperature superheater and described high temperature superheater are arranged in the back-end ductwork of described afterbody convection current twin flue.
embodiment 6:
described 350MW supercritical circulating fluidized bed boiler, H type economizer, the heating surface in back-end ductwork is in the time arranging, choose suitable average flue gas flow rate according to ash content in cigarette temperature, flue gas, avoid average cigarette speed too high, heating surface wear is fast, and adopts H type economizer.Its primary structure and performance characteristics are as follows:
design feature: (1) high-precision fin welding, guarantee that exhaust gases passes is smooth and easy; (2) this kind of economizer design is not easy to produce wearing and tearing;
performance characteristics: (1) reliability is high, fume side baffle plate protection bent tube section; Fin and smoke gas flow are forward arranged, reduce wear; Minimizing fume side flue gas resistance, water side pressure are fallen; Reduce operation and the cost of investment of air-introduced machine and feed pump.
(2) reduce dust stratification, smoke gas flow is clear and coherent smooth; There is the fin pitch that well prevents ash cutting; Guarantee to blow to greatest extent grey effect.
(3) can save space; In sum, adopt " H " type economizer to there is abrasionproof, reliability and comprehensive economic performance advantages of higher, meanwhile, can meet long-term safety operation completely.
embodiment 7:
described 350MW supercritical circulating fluidized bed boiler, reheating steam system flow process is to enter reheater entrance header from the steam of steam turbine high-pressure cylinder by two ends, introducing is positioned at the low-temperature reheater coil of the front flue of tail vertical well, steam counter-flow and on enter cold section of reheater outlet header, draw from header two ends again, guide stokehold into through tube connector, upwards enter hot arc reheater outlet header via distributing header to enter high temperature screen formula reheater, draw at the last two ends of reheated steam that reach 540 ℃, enters Steam Turbine Through IP Admission.
Claims (8)
1. a 350MW supercritical circulating fluidized bed boiler, its composition comprises: single burner hearth, it is characterized in that: at described burner hearth rear side, three cold separators of vapour are installed, described single burner hearth is connected with separator inlet flue, described separator inlet flue is connected with the described cold separator of vapour, the cold separator of described vapour is connected with separator outlet flue, described separator outlet flue is connected with afterbody convection current twin flue, middle temperature pendant superheater is installed in described single burner hearth, high temperature screen formula reheater, described single burner hearth respectively with in-duct burner, slag cooler, material returning valve connects, the cold separator of described vapour is connected with described material returning valve, described afterbody convection current twin flue is connected with economizer, described economizer bottom is provided with air preheater.
2. 350MW supercritical circulating fluidized bed boiler according to claim 1, it is characterized in that: described single burner hearth comprises combustion chamber, the evaporating heating surface of described combustion chamber comprises fin panel casing, water-cooling screen structure, single water-cooled distributor, major diameter bell-type windshield are equipped with in described bottom, combustion chamber, and described single burner hearth is connected by described separator inlet flue with the described cold separator of vapour.
3. 350MW supercritical circulating fluidized bed boiler according to claim 1 and 2, it is characterized in that: the cold separator of described vapour comprises membrane wall shell, described membrane wall outer casing inner wall scribbles wearing-proof refractory material layer, the cold separator of described vapour top is cylindrical shape part, the cold separator of described vapour bottom is tapering part, the cold separator of described vapour bottom is connected with described material returning valve, described material returning valve is connected with returning charge leg, described material returning valve is self-balancing type on-mechanical type material returning valve, described material returning valve bottom is connected with high pressure positive blower, described material returning valve comprises material returning valve outer cover of steel plate, described material returning valve outer cover of steel plate is connected with liner insulation material layer, described liner insulation material layer is connected with described wearing-proof refractory material layer, described liner insulation material layer and described wearing-proof refractory material layer pass through drag hook, bitch and support are fixed on described material returning valve outer cover of steel plate.
4. 350MW supercritical circulating fluidized bed boiler according to claim 1 and 2, it is characterized in that: described afterbody convection current twin flue is provided with the mid-board superheater that described afterbody convection current twin flue is divided into front flue and rear pass, in described front flue, low-temperature reheater is installed, below described low-temperature reheater, be furnished with economizer A, two-stage superheater system is installed in described rear pass, economizer B, described two-stage superheater system comprises high temperature superheater, low temperature superheater, below described high temperature superheater, arrange described low temperature superheater, below described low temperature superheater, arrange described economizer B, described afterbody convection current twin flue top is coated with membrane type enclosure wall superheater, described afterbody convection current twin flue bottom is single flue, described single flue lower disposed has described air preheater, described economizer adopts H type economizer in-line arrangement or light pipe in-line arrangement, described air preheater adopts tubular air preheater or rotary preheater.
5. 350MW supercritical circulating fluidized bed boiler according to claim 3, it is characterized in that: described afterbody convection current twin flue is provided with the mid-board superheater that described afterbody convection current twin flue is divided into front flue and rear pass, in described front flue, low-temperature reheater is installed, below described low-temperature reheater, be furnished with economizer A, two-stage superheater system is installed in described rear pass, economizer B, described two-stage superheater system comprises high temperature superheater, low temperature superheater, below described high temperature superheater, arrange described low temperature superheater, below described low temperature superheater, arrange described economizer B, described afterbody convection current twin flue top is coated with membrane type enclosure wall superheater, described afterbody convection current twin flue bottom is single flue, described single flue lower disposed has described air preheater, described economizer adopts H type economizer in-line arrangement or light pipe in-line arrangement, described air preheater adopts tubular air preheater or rotary preheater.
6. according to the 350MW supercritical circulating fluidized bed boiler described in claim 1 or 2 or 5, it is characterized in that: superheater system is made up of membrane type enclosure wall superheater, low temperature superheater, described middle temperature pendant superheater, high temperature superheater, being furnished with one-level direct-contact desuperheater on pipeline between described low temperature superheater and described middle temperature pendant superheater, between described middle temperature pendant superheater and described high temperature superheater, on pipeline, be furnished with secondary direct-contact desuperheater; Described middle temperature pendant superheater is arranged in described single burner hearth, and described low temperature superheater and described high temperature superheater are arranged in the back-end ductwork of described afterbody convection current twin flue.
7. 350MW supercritical circulating fluidized bed boiler according to claim 3, it is characterized in that: superheater system is made up of membrane type enclosure wall superheater, low temperature superheater, described middle temperature pendant superheater, high temperature superheater, being furnished with one-level direct-contact desuperheater on pipeline between described low temperature superheater and described middle temperature pendant superheater, between described middle temperature pendant superheater and described high temperature superheater, on pipeline, be furnished with secondary direct-contact desuperheater; Described middle temperature pendant superheater is arranged in described single burner hearth, and described low temperature superheater and described high temperature superheater are arranged in the back-end ductwork of described afterbody convection current twin flue.
8. 350MW supercritical circulating fluidized bed boiler according to claim 4, it is characterized in that: superheater system is made up of described membrane type enclosure wall superheater, described low temperature superheater, described middle temperature pendant superheater, described high temperature superheater, being furnished with one-level direct-contact desuperheater on pipeline between described low temperature superheater and described middle temperature pendant superheater, between described middle temperature pendant superheater and described high temperature superheater, on pipeline, be furnished with secondary direct-contact desuperheater; Described middle temperature pendant superheater is arranged in described single burner hearth, and described low temperature superheater and described high temperature superheater are arranged in the back-end ductwork of described afterbody convection current twin flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320748162.4U CN203656913U (en) | 2013-11-25 | 2013-11-25 | 350MW supercritical circulating fluidized bed boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320748162.4U CN203656913U (en) | 2013-11-25 | 2013-11-25 | 350MW supercritical circulating fluidized bed boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591575A (en) * | 2013-11-25 | 2014-02-19 | 哈尔滨锅炉厂有限责任公司 | Supercritical circulating fluidized bed boiler of 350MW and vapor circulation method |
| CN104990059A (en) * | 2015-06-02 | 2015-10-21 | 章礼道 | Ultralow-temperature coal economizer for single-reheat unit |
| CN109268807A (en) * | 2018-10-10 | 2019-01-25 | 哈尔滨锅炉厂有限责任公司 | A kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter |
| CN111043587A (en) * | 2019-12-30 | 2020-04-21 | 大唐石门发电有限责任公司 | High-temperature economizer for tail flue of thermal generator set |
-
2013
- 2013-11-25 CN CN201320748162.4U patent/CN203656913U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591575A (en) * | 2013-11-25 | 2014-02-19 | 哈尔滨锅炉厂有限责任公司 | Supercritical circulating fluidized bed boiler of 350MW and vapor circulation method |
| CN103591575B (en) * | 2013-11-25 | 2016-07-13 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical circulating fluidized bed boiler and steam/water circulating method |
| CN104990059A (en) * | 2015-06-02 | 2015-10-21 | 章礼道 | Ultralow-temperature coal economizer for single-reheat unit |
| CN104990059B (en) * | 2015-06-02 | 2017-05-24 | 章礼道 | Ultralow-temperature coal economizer for single-reheat unit |
| CN109268807A (en) * | 2018-10-10 | 2019-01-25 | 哈尔滨锅炉厂有限责任公司 | A kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter |
| CN111043587A (en) * | 2019-12-30 | 2020-04-21 | 大唐石门发电有限责任公司 | High-temperature economizer for tail flue of thermal generator set |
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