CN203431878U - Novel pure-combustion garbage fluidized bed incinerator - Google Patents
Novel pure-combustion garbage fluidized bed incinerator Download PDFInfo
- Publication number
- CN203431878U CN203431878U CN201320281013.1U CN201320281013U CN203431878U CN 203431878 U CN203431878 U CN 203431878U CN 201320281013 U CN201320281013 U CN 201320281013U CN 203431878 U CN203431878 U CN 203431878U
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- heat exchange
- flue
- distribution plate
- air distribution
- exchange flue
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Abstract
Provided is a novel pure-combustion garbage fluidized bed incinerator which aims to combust urban low heating value raw refuse without adding any auxiliary fuel. The incinerator includes a combustion chamber, a feeding inlet, a slag removal opening, a funnel-shaped air distribution plate, a heat insulation chamber, a cyclone separator, a return feeder, a shaft well heat exchange flue, a horizontal heat exchange flue, a superheater, a coal economizer, a medium temperature separator, and an air preheater. The hood of the funnel-shaped air distribution plate of a boiler is in the shape of a water drop and is tightly attached to the funnel-shaped air distribution plate, the shaft well heat exchange flue is arranged behind the cyclone separator, a film type water-cooled wall is arranged around the shaft well heat exchange flue, a heat exchanger is vertically arranged in the horizontal heat exchange flue, and the medium temperature separator is arranged between the superheater and the coal economizer. The incinerator provided guarantees the stable combustion of the low heating value raw refuse and prevents the passive shutdown caused by non-smooth slag removal, heat exchanger tube explosion, and ash deposit obstruction as well; moreover, the parameters at each stage of a system are wholly optimized, and the low emission of dioxins can be guaranteed.
Description
Technical field
The utility model relates to a kind of Incineration in CFB electricity generation system, is specially adapted to burn application of city life garbage and the living beings of high-moisture, low heat value, complicated component.
Background technology
Combustion technology of circulating fluidized is the clean coal combustion technology growing up later 1970s.CFBB have fuel tolerance wide, can add the deacidification agents such as lime stone low-cost depickling, low-temperature burning and air stage feeding in stove and effectively reduce the advantages such as nitrogen oxide generation, be particularly suitable for burning application of city life garbage and the biomass fuel of low heat value, complicated component.
Compare with fire coal, the complicated component of application of city life garbage many, there will be some special problems during burning.As discharge dioxin, boiler flue dust stratification, heat exchanger corrosion booster etc.Chinese application of city life garbage is not classification generally, and calorific value is low, complicated component, more having the problems such as burning is difficult for stablizing, siege deslagging difficulty.
At present, the problem that mainly solves combustion instability and fully burn by adding the method for auxiliary fuel (fire grate furnace oil, fluid bed are with coal-fired), the operation cost of enterprise is higher.
Because deslagging difficulty, dust deposit in flue seriously cause that windage is excessive, corrosion and wearing and tearing cause the reasons such as booster, the average continuous operating time of current Chinese fluidized bed refuse incinerator is one and a half months.Approximately 6,000 hours running times of annual, have a strong impact on performance driving economy and functional reliability, urgently improve.
Summary of the invention
The purpose of this utility model is to provide a kind of circulating fluidized bed boiler systems of domestic waste as single-fuel of usining, the method that this system is integrated by global optimization, take aggregate measures, the structure of control system links and thermal parameter, system can stably fully be burnt the in the situation that of pure combustion rubbish, and guarantee the low emission of dioxin; Meanwhile, avoid system because deslagging is smooth, the fault blowing out that causes of dust stratification, corrosion and wearing and tearing.
For achieving the above object, the utility model mainly comprises combustion chamber, material inlet, slag-drip opening, infundibulate air distribution plate, thermal-insulating chamber, cyclone separator, material returning device, vertical shaft convection heating surface, horizontal heat exchange flue, superheater, economizer, middle temperature separator and air preheater.
The blast cap of this boiler infundibulate air distribution plate is designed to droplet-shaped, be close on infundibulate air distribution plate, a large amount of circulating ash are returned to combustion chamber through material returning device, and do not arrange heat-transfer surface at burner hearth, after high-temperature separator, establish vertical shaft heat transfer flue, vertical shaft heat transfer flue surrounding is established fin panel casing, and the heat exchanger in horizontal heat exchange flue is arranged vertically, and middle temperature separator is set between superheater and economizer.
Accompanying drawing explanation
Fig. 1 the utility model structural representation;
In figure: warm separator, 11 economizers, 12 air preheaters, 13 horizontal heat exchange flues, 14 fin panel casings in 1 combustion chamber, 2 material inlets, 3 slag-drip openings, 4 infundibulate air distribution plates, 5 thermal-insulating chambers, 6 high-temperature separators, 7 material returning devices, 8 vertical shaft heat transfer flues, 9 superheaters, 10.
The specific embodiment
Fig. 1 is the structural representation of this utility model, is characterized in that described CFBB comprises combustion chamber 1, material inlet 2, slag-drip opening 3, infundibulate air distribution plate 4, thermal-insulating chamber 5, cyclone separator 6, material returning device 7, vertical shaft heat transfer flue 8, horizontal heat exchange flue 13, superheater 9, economizer 11, middle temperature separator 10 and air preheater 12.
The blast cap of infundibulate air distribution plate 4 is designed to droplet-shaped, is close to infundibulate air distribution plate 4, and to avoid blocking, being linked with iron wire and bulk rubbish, the distribution of blast cap and air quantity be through optimizing, make material in combustion chamber 1 interior formation whirlpool, bulk materials is concentrated to slag-drip opening 3.
A large amount of circulating ash are directly returned to combustion chamber 1 without heat exchange, and do not arrange heat-transfer surface at thermal-insulating chamber 5, to guarantee waste of low heating value smooth combustion, and more than keeping stove Nei Wenduda 850 degree.Before cyclone separator 6, establish a thermal-insulating chamber 5, to guarantee finally to enter that the air (normally Secondary Air) of combustion chamber 1 can keep at least 2 seconds more than 850 degree, dioxin and predecessor thereof in rubbish are thoroughly decomposed.
In vertical shaft heat transfer flue 8 surroundings, establish fin panel casing 15, wall temperature keeps 300 degree left and right.
The following flue gas of 650 degree enters horizontal heat exchange flue 13, heat exchanger in horizontal heat exchange flue 13 is arranged vertically, in heat exchanger, vapor (steam) temperature does not surpass 400 degree conventionally, outer surface of tube wall temperature is controlled at below 450 degree, middle temperature separator 10 is set between superheater 9 and economizer 11, the flying dust of about 70-80% in flue gas can be removed more than 450 degree, reduce the load of smoke processing system and purify ash amount, and can reduce the dust stratification in follow-up flue, reduce the low temperature synthetic quantity of dioxin and reduce flying dust contaminant capacity.
Claims (1)
1. the fluidized bed incinerator of Novel pure combustion rubbish, it is characterized in that: this incinerator mainly comprises combustion chamber (1), material inlet (2), slag-drip opening (3), infundibulate air distribution plate (4), thermal-insulating chamber (5), cyclone separator (6), material returning device (7), vertical shaft heat transfer flue (8), horizontal heat exchange flue (13), superheater (9), economizer (11), middle temperature separator (10) and air preheater (12), the blast cap of the infundibulate air distribution plate (4) of this boiler is designed to droplet-shaped, be close on infundibulate air distribution plate (4), a large amount of circulating ash are returned to combustion chamber (1) through material returning device (7), and do not arrange heat-transfer surface at burner hearth, at cyclone separator (6), establish afterwards vertical shaft heat transfer flue (8), vertical shaft heat transfer flue (8) surrounding is established fin panel casing (14), heat exchanger in horizontal heat exchange flue (13) is arranged vertically, between superheater (9) and economizer (11), middle temperature separator (10) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320281013.1U CN203431878U (en) | 2013-05-22 | 2013-05-22 | Novel pure-combustion garbage fluidized bed incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320281013.1U CN203431878U (en) | 2013-05-22 | 2013-05-22 | Novel pure-combustion garbage fluidized bed incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431878U true CN203431878U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320281013.1U Expired - Fee Related CN203431878U (en) | 2013-05-22 | 2013-05-22 | Novel pure-combustion garbage fluidized bed incinerator |
Country Status (1)
| Country | Link |
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| CN (1) | CN203431878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022122694A1 (en) | 2020-12-09 | 2022-06-16 | Sumitomo SHI FW Energia Oy | A circulating fluidized bed boiler |
-
2013
- 2013-05-22 CN CN201320281013.1U patent/CN203431878U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022122694A1 (en) | 2020-12-09 | 2022-06-16 | Sumitomo SHI FW Energia Oy | A circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100080, Zhongguancun building, No. 27, Zhongguancun Avenue, Haidian District, Beijing, 11, 1109 Patentee after: Beijing CSCE Environmental Engineering Co., Ltd. Address before: 100085 A908, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District Patentee before: Beijing CSCE Environmental Engineering Co., Ltd. |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing CSCE Environmental Engineering Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing CSCE Environmental Engineering Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| 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: 20140212 Termination date: 20180522 |