CN203797666U - Chicken manure fueled circulating fluidized bedboiler - Google Patents
Chicken manure fueled circulating fluidized bedboiler Download PDFInfo
- Publication number
- CN203797666U CN203797666U CN201420132896.4U CN201420132896U CN203797666U CN 203797666 U CN203797666 U CN 203797666U CN 201420132896 U CN201420132896 U CN 201420132896U CN 203797666 U CN203797666 U CN 203797666U
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- China
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- flue
- chicken manure
- front flue
- passage
- cyclone separator
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Abstract
The utility model discloses a chicken manure fueled circulating fluidized bedboiler. An upper smoke outlet of a combustion chamber is connected with a mixed gas input end of a cyclone separator, a particle output end of the cyclone separator is connected with a lower return port of the combustion chamber, and a pure flue gas output end of the cyclone separator is connected with an inlet of a multi-passage tail flue; the multi-passage tail flue at least comprises a front flue and a rear flue, the front glue is partitioned into a front flue downward passage and a front flue upward passage by a shared withe, a platen superheater used for slag coagulation is arranged in the front flue downward passage, a high-temperature superheater and a low-temperature superheater are sequentially disposed in the front flue upward passage, and a coal economizer and an air preheater are sequentially arranged in the rear flue. Due to adoption of the multi-passage tail flue, the space of the tail flue is broader, an arrangement structure with coarse pitch and low velocity of flue gas can be adopted, and consequently abrasion of a boiler heating surface can be alleviated effectively, and the flue is protected from being blocked due to bridging of accumulated ash.
Description
Technical field
The utility model relates to special boiler field, refers to particularly a kind of CFBB taking chicken manure as fuel.
Background technology
At present, a part of raw material as fertilizer of chicken manure that domestic large-scale chicken raising factory produces, major part is deposited in outdoor in addition.Survey discovery through scene, the chicken manure that pile up like a mountain causes and has a strong impact on local environment.From piling up the place of chicken manure away from, the scene personnel of surveying can smell a strange smell, and the chicken manure of accumulation has had a strong impact on the growth of trees and vegetation.While particularly raining, a large amount of chicken manure liquid flows into periphery farmland, and farmland makes the crops can not normal growth because fertilizer is excessive, cause that the dispute in periphery peasant household and chicken farm is continuous.Utilizing biomass energy---(husk is mainly used in the bed course of chicken manure in chicken farm for chicken manure and husk, prevent that chicken manure humidity is too large) mixture burns generating, can turn waste into wealth, can solve again the chicken manure heap local environment of being rivals in a contest causes and has a strong impact on, lime-ash after burning can also be served as the raw material of Organic Fertilizer Plants simultaneously, form industrial chain, realize resource comprehensive, efficient, recycle, there is higher economic benefit and environmental benefit.
But chicken manure generally contains higher alkali metal (Na, K) oxide and salt, this will cause ash fusion point to reduce, and bring many problems to combustion process.High basic metal content chicken manure is in the time of burning, and alkali metal can cause the serious high temperature sintering of ash in combustion chamber.And Cl content is higher in chicken manure, can etching apparatus in combustion process.Meanwhile, the ash accumulation angle producing after chicken manure fuel combustion is large, easily causes dust stratification and the stifled ash of back-end surfaces.
Up to now, domestic and even Asia there is no the special boiler taking chicken manure as fuel, but at Britain and north America region, the existing power plant taking turkey excrement as fuel drops into commercial operation, and its incinerator adopts grate furnace.Because the chamber design temperature of grate furnace is very high, in boiler actual motion, fire box temperature is up to more than 1000 DEG C, lime-ash is in burner hearth softening, semi-molten state, can form serious high temperature at burner hearth wall and cohere slag, flue gas temperature of hearth outlet is also more than 900 DEG C, in the time of sweep of gases superheater and high temperature convection bank, also can produce serious high temperature and cohere ash.But in order to ensure boiler load, must keep higher fire box temperature, flue-gas temperature, thereby aggravate the slagging scorification of burner hearth and the high temperature of heating surface coheres ash, cause heated surface corrosion and conduct heat and decline, finally be forced to blowing out, general boiler moves about a week continuously, must blowing out decoking.
Comparatively speaking, recirculating fluidized bed belongs to low-temperature burning, and in burner hearth, temperature can finely be controlled at 800 DEG C of left and right, can overcome the disadvantage of grate furnace high temperature slagging scorification, is applicable to using low heat value, high-moisture, high-ash inferior fuel.But conventional CFBB can not overcome the phenomenon such as burn into dust stratification and stifled ash well, thereby can not effectively ensure the safe and continuous operation of boiler.
Summary of the invention
The purpose of this utility model is exactly will provide a kind of can effectively overcome or alleviate the defects such as the burn into dross that produces when boiler uses chicken manure, dust stratification, stifled ash, improve the CFBB taking chicken manure as fuel of efficiency of combustion.
For achieving the above object, the CFBB taking chicken manure as fuel that the utility model is designed, comprise burner hearth, it is characterized in that: the top outlet flue of described burner hearth is connected with the gaseous mixture input of cyclone separator, the particle output of described cyclone separator is connected with the bottom returning charge mouth of burner hearth by material returning device, and the clean flue gas output of described cyclone separator is connected with the import of multi-channel type back-end ductwork; Described multi-channel type back-end ductwork at least comprises front flue and rear pass, described front flue is separated into front flue down pass and front flue updraught flue by common flue partition wall, described front flue down pass enter the import that mouth is described multi-channel type back-end ductwork, the outlet flue of described front flue down pass is the mouth that enters of described front flue updraught flue, and the outlet flue of described front flue updraught flue is connected with the mouth that enters of rear pass; In described front flue down pass, be provided with the pendant superheater for crust block, in described front flue updraught flue, be disposed with high temperature superheater and low temperature superheater, in described rear pass, be disposed with economizer and air preheater.
Further, described front flue is provided with multiple, and multiple front flues and rear pass series, parallel or string series-parallel connection are arranged; Flue gas stroke is completed in multichannel, and meanwhile, convenient and reasonable layout heating surface in multiple front flues, solves the phenomenons such as corrosion dross that the combustion product of this specific fuel of chicken manure causes to boiler heating surface, dust stratification, stifled ash.
Further, in described front flue, be positioned at common flue partition wall below and be provided with dust leg.
Further, described burner hearth adopts film water cold wall structure, is provided with interface of pressure measurement and temperature survey interface on the sidewall of its underpart, convenient furnace pressure and the temperature measured in time.
The utility model has the advantage of: owing to adopting multi-channel type back-end ductwork, make back-end ductwork space broader, can adopt the arrangement of the low flue gas flow rate of coarse pitch, the wearing and tearing that effectively alleviate boiler heating surface, avoid dust stratification to put up a bridge and stop up flue.And the mobile distance of flue gas is longer, increase the time of staying of fuel in boiler, improve efficiency of combustion, reduce discharge capacity and the unburned carbon in flue dust of CO, save fuel, keep lime-ash activity, be also conducive to the comprehensive utilization of flying dust.Meanwhile, alleviate burn into dust stratification and stifled grey, the wearing and tearing of back-end ductwork convection heating surface, ensured that boiler safety moves continuously.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the CFBB taking chicken manure as fuel.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
CFBB taking chicken manure as fuel shown in figure, comprise burner hearth 1, the top outlet flue of burner hearth 1 is connected with the gaseous mixture input of cyclone separator 2, the particle output of cyclone separator 2 is connected with the bottom returning charge mouth of burner hearth 1 by material returning device 3, and the clean flue gas output of cyclone separator 2 is connected with the import of multi-channel type back-end ductwork.Above-mentioned multi-channel type back-end ductwork at least comprises front flue 4 and rear pass 6, front flue 4 is separated into front flue down pass 4a and front flue updraught flue 4b by common flue partition wall 5, front flue down pass 4a enters the import that mouth is described multi-channel type back-end ductwork, the outlet flue of front flue down pass 4a is the mouth that enters of described front flue updraught flue 4b, and the outlet flue of front flue updraught flue 4b is connected with the mouth that enters of rear pass 6; In front flue down pass 4a, be provided with the pendant superheater 7 for crust block, in front flue updraught flue 4b, be disposed with high temperature superheater 8 and low temperature superheater 9, in rear pass 6, be disposed with economizer 10 and air preheater 11.As preferred version, front flue 4 can arrange multiple, and multiple front flues 4 adopt series, parallel or string series-parallel connection mode to arrange with rear pass 6.Be positioned at common flue partition wall 5 in front flue 4 below, be provided with dust leg 12, so that scarfing cinder in time.Burner hearth 1 adopts film water cold wall structure, to improve heat exchange efficiency.On burner hearth 1 lower sides, be provided with interface of pressure measurement 1a and temperature survey interface 1b, to facilitate the corresponding measuring instrument of access, situation in on-line monitoring stove.
In use, flue gas enters separator 2, front flue 4 and rear pass 6 by burner hearth 1 to the utility model successively, and pendant superheater 7 is for crust block, to alleviate other convection heating surface dust stratification of afterbody.Meanwhile, can effectively control the inlet flue gas temperature of high temperature superheater 8, the corrosion of the face that keeps from heat, front flue 4 and rear pass 6 change the flow direction of flue gas, are conducive to grey deposition.Adopt multiple front flues and rear pass series, parallel or string series-parallel connection to arrange, can make flue gas stroke complete in multichannel.Meanwhile, convenient and reasonable layout heating surface in multiple front flues, solves the phenomenons such as corrosion dross that the combustion product of this specific fuel of chicken manure causes to boiler heating surface, dust stratification, stifled ash.
Claims (5)
1. the CFBB taking chicken manure as fuel, comprise burner hearth (1), it is characterized in that: the top outlet flue of described burner hearth (1) is connected with the gaseous mixture input of cyclone separator (2), the particle output of described cyclone separator (2) is connected with the bottom returning charge mouth of burner hearth (1) by material returning device (3), and the clean flue gas output of described cyclone separator (2) is connected with the import of multi-channel type back-end ductwork; Described multi-channel type back-end ductwork at least comprises front flue (4) and rear pass (6), described front flue (4) is separated into front flue down pass (4a) and front flue updraught flue (4b) by common flue partition wall (5), described front flue down pass (4a) enter the import that mouth is described multi-channel type back-end ductwork, the outlet flue of described front flue down pass (4a) is the mouth that enters of described front flue updraught flue (4b), and the outlet flue of described front flue updraught flue (4b) is connected with the mouth that enters of rear pass (6); In described front flue down pass (4a), be provided with the pendant superheater (7) for crust block, in described front flue updraught flue (4b), be disposed with high temperature superheater (8) and low temperature superheater (9), in described rear pass (6), be disposed with economizer (10) and air preheater (11).
2. the CFBB taking chicken manure as fuel according to claim 1, is characterized in that: described front flue (4) is provided with multiple, and multiple front flues (4) and rear pass (6) series, parallel or string series-parallel connection are arranged.
3. according to the CFBB taking chicken manure as fuel described in claim 1 or 2, it is characterized in that: in described front flue (4), be positioned at common flue partition wall (5) below and be provided with dust leg (12).
4. according to the CFBB taking chicken manure as fuel described in claim 1 or 2, it is characterized in that: described burner hearth (1) adopts film water cold wall structure, is provided with interface of pressure measurement (1a) and temperature survey interface (1b) on the sidewall of its underpart.
5. the CFBB taking chicken manure as fuel according to claim 3, is characterized in that: described burner hearth (1) adopts film water cold wall structure, is provided with interface of pressure measurement (1a) and temperature survey interface (1b) on the sidewall of its underpart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132896.4U CN203797666U (en) | 2014-03-24 | 2014-03-24 | Chicken manure fueled circulating fluidized bedboiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132896.4U CN203797666U (en) | 2014-03-24 | 2014-03-24 | Chicken manure fueled circulating fluidized bedboiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797666U true CN203797666U (en) | 2014-08-27 |
Family
ID=51379874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420132896.4U Expired - Fee Related CN203797666U (en) | 2014-03-24 | 2014-03-24 | Chicken manure fueled circulating fluidized bedboiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285401A (en) * | 2019-06-28 | 2019-09-27 | 自贡华西能源工业有限公司 | Pure combustion furfural dregs CFB boiler |
| CN112377896A (en) * | 2020-11-13 | 2021-02-19 | 东方电气集团东方锅炉股份有限公司 | Circulating fluidized bed boiler for pure combustion of high-sodium potassium fuel and operation method thereof |
-
2014
- 2014-03-24 CN CN201420132896.4U patent/CN203797666U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285401A (en) * | 2019-06-28 | 2019-09-27 | 自贡华西能源工业有限公司 | Pure combustion furfural dregs CFB boiler |
| CN110285401B (en) * | 2019-06-28 | 2020-11-13 | 自贡华西能源工业有限公司 | Pure combustion furfural residue CFB boiler |
| CN112377896A (en) * | 2020-11-13 | 2021-02-19 | 东方电气集团东方锅炉股份有限公司 | Circulating fluidized bed boiler for pure combustion of high-sodium potassium fuel and operation method thereof |
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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: 20140827 Termination date: 20210324 |