CN109268807A - A kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter - Google Patents
A kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter Download PDFInfo
- Publication number
- CN109268807A CN109268807A CN201811179766.5A CN201811179766A CN109268807A CN 109268807 A CN109268807 A CN 109268807A CN 201811179766 A CN201811179766 A CN 201811179766A CN 109268807 A CN109268807 A CN 109268807A
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- Prior art keywords
- boiler
- economizer
- vertical shaft
- fluidized bed
- circulating fluidized
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
A kind of circulating fluidized bed boiler of medium temperature and medium pressure 220t/h.The present invention solves existing boiler in chemical industry in use, back-end ductwork economizer, low temperature superheater setting are unreasonable, the problem of leading to not to be able to satisfy the demand in chemical industry to 450 DEG C of existing boiler medium temperature and medium pressure, 3.82MPa parameter.It includes boiler front vertical shaft, boiler tail vertical shaft and cyclone separator, boiler front vertical shaft is always to hang structure, boiler tail vertical shaft uses and always hangs structure, the flue of boiler front shaft top is connected by cyclone separator with the flue of boiler tail shaft top, boiler tail vertical shaft includes back-end ductwork, low temperature superheater, the first economizer, the second economizer and air preheater, the low temperature superheater, the first economizer, the second economizer and air preheater are from top to bottom sequentially arranged in the inside of back-end ductwork, and the present invention is used for chemical industry field.
Description
Technical field
The present invention relates to circulating fluidized bed boiler field, followed more particularly to a kind of 220t/h grade of medium temperature and medium pressure parameter
Circulation fluidized bed boiler.
Background technique
Currently, demand of the home and abroad chemical industry to the circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter
Increase, existing boiler chemical industry in use, back-end ductwork economizer, low temperature superheater setting it is unreasonable, causing cannot
Meets in chemical industry the problem of the needs of to 450 DEG C of existing boiler medium temperature and medium pressure, 3.82MPa parameter, at present 220t/h grade
Circulating fluidized bed boiler be all 540 DEG C of high temperature and pressure parameter, 9.81Mpa, be not able to satisfy chemical industry to medium temperature and medium pressure 450
DEG C, the parameter request of 3.82MPa, the 220t/h grade recycle fluidized-bed combustion boiler for researching and developing medium temperature and medium pressure parameter is imperative.
Summary of the invention
The purpose of the present invention is to solve existing boiler in chemical industry in use, back-end ductwork economizer, low temperature
Superheater setting is unreasonable, causes not to be able to satisfy in chemical industry to 450 DEG C of existing boiler medium temperature and medium pressure, 3.82MPa parameter
The problem of demand.
The technical scheme is that
The present invention is a kind of circulating fluidized bed boiler of 220t/h grade using medium temperature and medium pressure parameter, a kind of use
The circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter it include the whole boiler front vertical shaft in M shape arrangement, pot
Furnace tail vertical well and cyclone separator,
Boiler front vertical shaft is always to hang structure, and the surrounding outer wall of vertical shaft is fin panel casing, and boiler tail vertical shaft is also total
Structure is hung, the flue of boiler front shaft top is connected by cyclone separator with the flue of boiler tail shaft top, rotation
Wind separator lower part connects loop back device and ash cooler, and boiler front vertical shaft is using the additional heat preservation of membrane wall and external gold
Belonging to backplate, the boiler tail vertical shaft uses the additional heat preservation of membrane wall, and boiler tail vertical shaft is supported by steel column,
Boiler front vertical shaft includes burner hearth and bellows, and bellows are arranged in the bottom of burner hearth, and burner hearth is from the bottom to top successively
Equipped with air distribution plate, front wall coal feeding hole, water-cooling screen and heat shielding is crossed, air distribution plate is located at the bottom in burner hearth, and front wall coal feeding hole is located at furnace
The lateral wall of thorax bottom, water-cooling screen are located in burner hearth with heat shielding is crossed
Beneficial effects of the present invention:
1, setting of the present apparatus by back-end ductwork, low temperature superheater, the first economizer, the second economizer and air preheat
Device is from top to bottom sequentially arranged in the inside of back-end ductwork, such setting be able to satisfy in chemical industry to 450 DEG C of medium temperature and medium pressure,
3.82MPa parameter request；
2, the present apparatus is stable, and cyclicity is high, SO2By desulfuration in furnace and back-end ductwork desulfurization, the control of NOx according to
The setting of project situation, the present apparatus have the device of preferable dust-removal and desulfurizing denitration, will not pollute to atmosphere and environment, while energy
It is enough energy saving, reduce energy consumption；
3, the present apparatus is easy to operate, and easy to maintain and maintenance, the exploitation of the present apparatus enrich answering for circulating fluidized bed boiler
With providing novel circulating fluidized bed boiler for chemical industry, widened the road for development of circulating fluidized bed boiler, improve related
Product competitiveness in the market；
Detailed description of the invention
Fig. 1 is circulating fluidized bed boiler overall structure diagram；
Fig. 2 is the structural schematic diagram of Cyclone in Boiler with Circulating Fluidized Bed:
Fig. 3 is the structural schematic diagram of back-end ductwork in circulating fluidized bed boiler
Specific embodiment
Specific embodiment 1: embodiment is described with reference to Fig. 1, a kind of of present embodiment uses medium temperature and medium pressure parameter
220t/h grade circulating fluidized bed boiler, it includes the whole boiler front vertical shaft 1 in M shape arrangement, boiler tail vertical shaft 2
With cyclone separator 3,
Boiler front vertical shaft 1 is always to hang structure, and the surrounding outer wall of vertical shaft 1 is fin panel casing, and boiler tail vertical shaft 2 is also
Structure is always hung, the flue at 1 top of boiler front vertical shaft is connected by cyclone separator 3 with the flue at 2 top of boiler tail vertical shaft
Logical, 3 lower part of cyclone separator connects loop back device 4 and ash cooler, and boiler front vertical shaft 1 uses the additional heat preservation of membrane wall
And external metal casing, the boiler tail vertical shaft 2 uses the additional heat preservation of membrane wall, and boiler tail vertical shaft 2 is supported by steel column,
Boiler front vertical shaft 1 includes burner hearth 1-1 and bellows 1-2, and the bottom of burner hearth 1-1, burner hearth is arranged in bellows 1-2
1-1 is successively arranged air distribution plate 1-1-1, front wall coal feeding hole 1-1-2, water-cooling screen 1-1-3 from the bottom to top and crosses heat shielding 1-1-4, cloth wind
Plate 1-1-1 is located at the bottom in burner hearth 1-1, and front wall coal feeding hole 1-1-2 is located at the lateral wall of the bottom burner hearth 1-1, water-cooling screen 1-1-3
It is located inside burner hearth 1-1 with heat shielding 1-1-4 is crossed, the surface the water-cooling screen 1-1-3 is laid with refractory material；
CFB boiler tail vertical well 2 includes back-end ductwork 2-1, low temperature superheater 2-2, the first economizer 2-3, second province's coal
Device 2-5 and air preheater 2-6, the low temperature superheater 2-2, the first economizer 2-3, the second economizer 2-5 and air preheat
Device 2-6 is from top to bottom sequentially arranged in the inside of back-end ductwork 2-1.So set, the inside of circulating fluidized bed boiler can be made to join
Number reaches the parameter of 450 DEG C of medium temperature and medium pressure, 3.82MPa.
Specific embodiment 2: embodiment is described with reference to Fig. 1, a kind of of present embodiment uses medium temperature and medium pressure parameter
220t/h grade circulating fluidized bed boiler, the cyclone separator 3 uses vertical circular cone barrel structure, inner vertical direction by
Under it is supreme be respectively feed back standpipe area 3-1, cyclone separation 3-2, area of clean room 3-3, the cyclone separation 3-2 be equipped with it is multiple
Cyclone separator pipe 3-4, multiple cyclone separator pipe 3-4 are lifted on inside cyclone separator 3.It is other composition and connection relationship and
Specific embodiment one is identical.
Specific embodiment 3: embodiment is described with reference to Fig. 1, a kind of of present embodiment uses medium temperature and medium pressure parameter
220t/h grade circulating fluidized bed boiler, the low temperature superheater 2-2 be convection superheater, low temperature superheater 2-2 by
The coiled pipe composition of a large amount of parallel side-by-sides, the outer diameter 32-44mm of coiled pipe, the wall thickness of coiled pipe are 3-7mm, the material of coiled pipe
For carbon steel tubing.Other compositions and connection relationship are the same as one or two specific embodiments.
Specific embodiment 4: embodiment is described with reference to Fig. 1, a kind of of present embodiment uses medium temperature and medium pressure parameter
220t/h grade circulating fluidized bed boiler, between the first economizer 2-3 and the second economizer 2-5 be equipped with SCR reserved space
Corresponding device, the first economizer 2-3 and the second province is arranged according to the project situation of application in 2-4, the SCR reserved space 2-4
Coal device 2-5 is serpentine structure, and the first economizer 2-3 and the second economizer 2-5 are along the width of entire back-end ductwork 2-1
Direction arrangement, the first economizer 2-3 and the second economizer 2-5 are hung on top plate by hanging pipe and roof suspending device.Other
Composition and connection relationship are identical as specific embodiment one, two or three.
Specific embodiment 5: embodiment is described with reference to Fig. 1, a kind of of present embodiment uses medium temperature and medium pressure parameter
220t/h grade circulating fluidized bed boiler, the air preheater 2-6 use tubular air preheater, air preheater 2-
6 generally bobbin carriage, bobbin carriages are made of pipe and tube sheet, and pipe is staggered in arrangement, and the upper middle lower part of bobbin carriage is equipped with tube sheet.Other groups
At identical with connection relationship and specific embodiment one, two, three or four.
Specific embodiment 6: embodiment is described with reference to Fig. 1, a kind of of present embodiment uses medium temperature and medium pressure parameter
220t/h grade circulating fluidized bed boiler, the material of the coiled pipe of the first economizer 2-3 and the second economizer 2-5 is
Carbon steel pipe.Other compositions and connection relationship and specific embodiment one, two, three, four or five are identical.
Working principle:
First to coal in such a way that front wall is to coal, is then blown by bellows, make coal in burner hearth 1-1 full combustion, furnace
The water-cooling wall of thorax 1-1 surrounding is for partial heat caused by absorption burning, the flue gas for formation of burning and by flue gas carrying
Tinyization solid particle, after carrying out preliminary desulfurization removing nitric, water cooled screen 1-1-3 and excessively heat shielding 1-1-4 enter whirlwind by flue
Separator 3, cyclone separator 3 separates the tinyization solid particle that flue gas carries with flue gas, and tinyization solid particle is sent
Thorax 1-1 is melted down, flue gas after separation enters back-end ductwork 2-1, using low temperature superheater 2-2, first economizer 2-3, SCR
Reach medium temperature and medium pressure required for chemical industry after the processing of reserved space 2-4, the second economizer 2-5 and air preheater 2-6
450 DEG C, the parameter request of 3.82MPa.SCR reserved space 2-4 is arranged according to project situation.
Claims (6)
1. a kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter, it includes the whole boiler in M shape arrangement
Front vertical shaft (1), boiler tail vertical shaft (2) and cyclone separator (3),
It is characterized by: boiler front vertical shaft (1) is always to hang structure, the surrounding outer wall of vertical shaft (1) is fin panel casing, boiler tail
For portion's vertical shaft (2) also always to hang structure, the flue at the top of boiler front vertical shaft (1) is perpendicular by cyclone separator (3) and boiler tail
Flue at the top of well (2) is connected, and cyclone separator (3) lower part connects loop back device (4) and ash cooler, the boiler front
Vertical shaft (1) uses the additional guarantor of membrane wall using the additional heat preservation of membrane wall and external metal casing, the boiler tail vertical shaft (2)
Temperature, and boiler tail vertical shaft (2) is supported by steel column,
Boiler front vertical shaft (1) includes burner hearth (1-1) and bellows (1-2), and bellows (1-2) are arranged at the bottom of burner hearth (1-1)
Portion, burner hearth (1-1) are successively arranged air distribution plate (1-1-1), front wall coal feeding hole (1-1-2), water-cooling screen (1-1-3) and mistake from the bottom to top
Heat shielding (1-1-4), air distribution plate (1-1-1) are located at the bottom in burner hearth (1-1), and front wall coal feeding hole (1-1-2) is located at burner hearth (1-1)
The lateral wall of bottom, water-cooling screen (1-1-3) and excessively heat shielding (1-1-4) are located at burner hearth (1-1) inside, the water-cooling screen (1-1-3)
Surface is laid with refractory material；
Boiler tail vertical shaft (2) includes back-end ductwork (2-1), low temperature superheater (2-2), the first economizer (2-3), second province's coal
Device (2-5) and air preheater (2-6), the low temperature superheater (2-2), the first economizer (2-3), the second economizer (2-5)
The inside of back-end ductwork (2-1) is from top to bottom sequentially arranged in air preheater (2-6).
2. a kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter according to claim 1, feature
Be: the cyclone separator (3) uses vertical circular cone barrel structure, and inner vertical direction is respectively feed back standpipe area from the bottom to top
(3-1), cyclone separation (3-2), area of clean room (3-3), the cyclone separation (3-2) are equipped with multiple cyclone separator pipes
(3-4), it is internal that multiple cyclone separator pipes (3-4) are lifted on cyclone separator (3).
3. a kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter according to claim 2, feature
Be: the low temperature superheater (2-2) be convection superheater, low temperature superheater (2-2) by a large amount of parallel side-by-sides coiled pipe
Composition, the outer diameter 32-44mm of coiled pipe, the wall thickness of coiled pipe are 3-7mm, and the material of coiled pipe is carbon steel tubing.
4. a kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter according to claim 3, feature
It is: is equipped with SCR reserved space (2-4) between the first economizer (2-3) and the second economizer (2-5), the SCR reserved space
Corresponding device is arranged according to the project situation of application in (2-4), and the first economizer (2-3) and the second economizer (2-5) are snake
Shape tubular structure, the first economizer (2-3) and the second economizer (2-5) are along the width direction cloth of entire back-end ductwork (2-1)
It sets, the first economizer (2-3) and the second economizer (2-5) are hung on top plate by hanging pipe and roof suspending device.
5. a kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter according to claim 4, feature
Be: the air preheater (2-6) use tubular air preheater, air preheater (2-6) generally bobbin carriage, bobbin carriage be by
Pipe and tube sheet composition, pipe are staggered in arrangement, and the upper middle lower part of bobbin carriage is equipped with tube sheet.
6. a kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter according to claim 5, feature
Be: the material of the coiled pipe of first economizer (2-3) and the second economizer (2-5) is carbon steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179766.5A CN109268807A (en) | 2018-10-10 | 2018-10-10 | A kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179766.5A CN109268807A (en) | 2018-10-10 | 2018-10-10 | A kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter |
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| CN109268807A true CN109268807A (en) | 2019-01-25 |
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| CN201811179766.5A Pending CN109268807A (en) | 2018-10-10 | 2018-10-10 | A kind of circulating fluidized bed boiler of the 220t/h grade of medium temperature and medium pressure parameter |
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| CN203656913U (en) * | 2013-11-25 | 2014-06-18 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical circulating fluidized bed boiler |
| CN105627301A (en) * | 2016-03-16 | 2016-06-01 | 太原锅炉集团有限公司 | Circulating fluidized bed boiler for purely burning furfural residues |
-
2018
- 2018-10-10 CN CN201811179766.5A patent/CN109268807A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101113816A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院工程热物理研究所 | Biomass circulating fluid bed burning method and biomass circulating fluid bed boiler |
| CN1912461A (en) * | 2006-08-11 | 2007-02-14 | 国电科技环保集团山东龙源环保有限公司 | Straw circulation fluidized-bed combustion boiler |
| CN101786050A (en) * | 2009-10-09 | 2010-07-28 | 哈尔滨工业大学 | Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section |
| CN203656913U (en) * | 2013-11-25 | 2014-06-18 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical circulating fluidized bed boiler |
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