CN202511294U - Lower-heating value low-load garbage incineration waste heat boiler - Google Patents
Lower-heating value low-load garbage incineration waste heat boiler Download PDFInfo
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- CN202511294U CN202511294U CN2012201823977U CN201220182397U CN202511294U CN 202511294 U CN202511294 U CN 202511294U CN 2012201823977 U CN2012201823977 U CN 2012201823977U CN 201220182397 U CN201220182397 U CN 201220182397U CN 202511294 U CN202511294 U CN 202511294U
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Abstract
The utility model discloses a lower-heating value low-load garbage incineration waste heat boiler and belongs to the technical field of environment-friendly waste heat power generation. The boiler comprises a boiler casing, an exhaust gas inlet, an exhaust gas outlet, a membrane wall vertical flue group, a horizontal flue, a tail flue and a heat exchange mechanism, wherein the membrane wall vertical flue group comprises a first flue, a second flue and a third flue, the first flue, the second flue and the third flue are communicated sequentially, the heat exchange mechanism comprises a first-stage evaporator, a high temperature superheater, an intermediate temperate superheater, a low temperature superheater, a second-stage evaporator and three groups of coal economizers, at least one dust hopper is connected with the lower end of the flue under the heat exchange mechanism, and baffle plates are arranged in flues above every dust hopper and are arranged between every two adjacent dust hoppers respectively. According to the boiler, the application range of the boiler to garbage heating values is wide, high-temperature corrosion is avoided, and the exhaust gas flow rate is low, so that fly ash in exhaust gas can settle easily, high-temperature pipe burst is avoided, the heat exchange efficiency is improved, and the service life of pipes is prolonged.
Description
Technical field
The utility model belongs to environmental protection cogeneration technology field, particularly a kind of low heat value, underload refuse incineration exhaust-heating boiler.
Background technology
The Along with people's growth in the living standard, socioeconomic continuous development has produced more rubbish, and the processing of rubbish has become the topic of common concern, and burning electricity generation has become the main means of disposal of refuse at present.Rubbish produces a large amount of heats when burning; These heats can carry out UTILIZATION OF VESIDUAL HEAT IN, and the waste heat boiler of incineration treatment of garbage has vertical and horizontal two kinds at present, and existing vertical and horizontal refuse incineration exhaust-heating boiler has following shortcoming: 1) blow ash and arrange unreasonable; It is bad to blow grey effect; The easy high temperature booster of heat-transfer surface, the cleaning trouble has increased operation cost.2) pipe is improper apart from arranging, ash is not easy sedimentation, is attached on the heat exchanger, causes heat exchange efficiency to descend, and can not guarantee boiler load, and economy is low.3) the easy cold end corrosion of vertical waste heat boiler back-end ductwork.4) in the existing horizontal type waste heat boiler, horizontal flue heat convection face is arranged unreasonable, and the flue-gas temperature of advancing high temperature superheater surpasses 650 ° easily, and superheater is prone to produce high temperature corrosion.5) in the flue gas that produces during waste incineration, the caking property of flying dust is very high, and flue gas flow rate is high in the horizontal flue, and the exchange hot side directly washes away, and causes dust stratification serious.6) prior art can not adapt to that the refuse thermal value mobility is big, the characteristics of high-moisture.
Summary of the invention
The purpose of the utility model is a kind of low heat value, underload refuse incineration exhaust-heating boiler to be provided, with mobility, the high-moisture that adapts to refuse thermal value to above problem; Avoid flying dust to pile up effectively; Improve heat exchange efficiency, guarantee steam quality, cut operating costs.
The utility model comprises boiler shell, gas approach, exhanst gas outlet, the vertical flue group of membrane wall, horizontal flue, back-end ductwork, heat exchange mechanisms; The vertical flue group of said membrane wall comprises first flue, second flue and the 3rd flue that is communicated with successively; Said gas approach is arranged on the below of boiler shell one end; First flue is set above said gas approach; Side at first flue is provided with second flue, at the opposite side of second flue the 3rd flue is set, and at said the 3rd flue opposite side horizontal flue is set; Opposite side at said horizontal flue is provided with back-end ductwork, and the 3rd flue of the vertical flue group of said membrane wall is communicated with through horizontal flue and back-end ductwork; Free end at said back-end ductwork is provided with exhanst gas outlet; Said heat exchange mechanisms comprises first evaporator, high temperature superheater, medium temperature overheater, low temperature superheater, second level evaporimeter, three groups of economizers; In said horizontal flue, set gradually first evaporator, high temperature superheater, medium temperature overheater, low temperature superheater, second level evaporimeter from a end to exhanst gas outlet near the 3rd flue along the length direction of horizontal flue; Said three groups of economizers are successively set in the back-end ductwork along the length direction of back-end ductwork; Flue lower end below said heat exchange mechanisms connects at least one ash bucket, in the flue above said each ash bucket, between adjacent two ash buckets, baffle plate is set respectively.
The utility model gets into first flue from the flue gas of incinerator from gas approach; Get into second flue, the 3rd flue successively from first flue again, three flues all are furnished with membrane wall and are used for absorbing the heat that incineration firing produces in the stove, and flue gas gets into horizontal flue through the 3rd flue; And pass through first evaporator, high temperature superheater, medium temperature overheater, low temperature superheater and second level evaporimeter successively; Get into back-end ductwork afterwards, the three groups of economizers of flowing through are at last to exhanst gas outlet.
Spacing between the utility model heat exchanger is big, all at a distance of 840mm, at a distance of 2300mm, so arranges to be difficult for producing high temperature corrosion between economizer in the back-end ductwork and the second level evaporimeter in the horizontal flue between the heat exchanger in the horizontal flue.
The utility model is provided with first ash bucket below said first evaporator and high temperature superheater, second ash bucket is set below said medium temperature overheater, and the 3rd ash bucket is set below said low temperature superheater; Below the evaporimeter of the said second level, the 4th ash bucket is set; The 5th ash bucket is set respectively below said each economizer, is used for better collecting the flying dust that falls, simultaneously owing to be equipped with baffle plate between each ash bucket and the heat exchanger; Make flue gas from heat-transfer surface, flow through; Avoid flue gas to flow out, strengthened the flue gas perturbation, improved heat exchange efficiency from the heat-transfer surface bottom.
The utility model is to the wide accommodation of refuse thermal value; Avoided high temperature corrosion, flue gas flow rate is low to make flying dust sedimentation more easily in the flue gas, has avoided the high temperature booster; Improved heat exchange efficiency; Flue gas flow rate is low also to make flue gas little to the impulsive force of heat convection face, has reduced wearing and tearing, has prolonged the service life of pipe.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
The utility model comprises boiler shell 1, gas approach 2, exhanst gas outlet 3, the vertical flue group of membrane wall, horizontal flue 4, back-end ductwork 5, heat exchange mechanisms; The vertical flue group of membrane wall comprises successively first flue 6, second flue 7 and the 3rd flue 8 that is communicated with; Gas approach 2 is arranged on the below of boiler shell 1 one ends; First flue 6 is set above gas approach 2; Side at first flue 6 is provided with second flue 7, at the opposite side of second flue 7 the 3rd flue 8 is set, and at the 3rd flue 8 opposite sides horizontal flue 4 is set; Opposite side at horizontal flue 4 is provided with back-end ductwork 5, and the 3rd flue 8 of the vertical flue group of membrane wall is communicated with through horizontal flue 4 and back-end ductwork 5; Free end at back-end ductwork 5 is provided with exhanst gas outlet 3.
Heat exchange mechanisms comprises first evaporator 9, high temperature superheater 10, medium temperature overheater 11, low temperature superheater 12, second level evaporimeter 13, three groups of economizers 14; In horizontal flue 4, set gradually first evaporator 9, high temperature superheater 10, medium temperature overheater 11, low temperature superheater 12, second level evaporimeter 13 from a end to exhanst gas outlet 3 near the 3rd flue 8 along the length direction of horizontal flue 4; Three groups of economizers 14 are successively set in the back-end ductwork 5 along the length direction of back-end ductwork.
Be connected first ash bucket 15 at first evaporator 9 with horizontal flue 4 lower ends below the high temperature superheater 10; Horizontal flue 4 lower ends below medium temperature overheater 11 connect second ash bucket 16; Horizontal flue 4 lower ends below low temperature superheater 12 connect the 3rd ash bucket 17; Horizontal flue 4 lower ends below second level evaporimeter 13 connect the 4th ash bucket 18, three the 5th ash buckets 19 of the corresponding respectively connection in back-end ductwork 5 lower ends below each economizer 14; In the flue above each ash bucket 15,16,17,18,19, between adjacent two ash buckets, baffle plate 20 is set respectively.
Claims (1)
1. a low heat value, underload refuse incineration exhaust-heating boiler comprise boiler shell, gas approach, exhanst gas outlet, the vertical flue group of membrane wall, horizontal flue, back-end ductwork, heat exchange mechanisms; It is characterized in that: the vertical flue group of said membrane wall comprises first flue, second flue and the 3rd flue that is communicated with successively; Said gas approach is arranged on the below of boiler shell one end; First flue is set above said gas approach; Side at first flue is provided with second flue, at the opposite side of second flue the 3rd flue is set, and at said the 3rd flue opposite side horizontal flue is set; Opposite side at said horizontal flue is provided with back-end ductwork, and the 3rd flue of the vertical flue group of said membrane wall is communicated with through horizontal flue and back-end ductwork; Free end at said back-end ductwork is provided with exhanst gas outlet; Said heat exchange mechanisms comprises first evaporator, high temperature superheater, medium temperature overheater, low temperature superheater, second level evaporimeter, three groups of economizers; In said horizontal flue, set gradually first evaporator, high temperature superheater, medium temperature overheater, low temperature superheater, second level evaporimeter from a end to exhanst gas outlet near the 3rd flue along the length direction of horizontal flue; Said three groups of economizers are successively set in the back-end ductwork along the length direction of back-end ductwork; Flue lower end below said heat exchange mechanisms connects at least one ash bucket, in the flue above said each ash bucket, between adjacent two ash buckets, baffle plate is set respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201823977U CN202511294U (en) | 2012-04-26 | 2012-04-26 | Lower-heating value low-load garbage incineration waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201823977U CN202511294U (en) | 2012-04-26 | 2012-04-26 | Lower-heating value low-load garbage incineration waste heat boiler |
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| Publication Number | Publication Date |
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| CN202511294U true CN202511294U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201823977U Expired - Lifetime CN202511294U (en) | 2012-04-26 | 2012-04-26 | Lower-heating value low-load garbage incineration waste heat boiler |
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| CN (1) | CN202511294U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121587A (en) * | 2014-08-06 | 2014-10-29 | 无锡华光锅炉股份有限公司 | Smoke baffle structure of garbage incineration furnace |
| CN104456499A (en) * | 2014-11-27 | 2015-03-25 | 江苏太湖锅炉股份有限公司 | Waste heat boiler structure with L-shaped combined heated face |
| CN106958809A (en) * | 2017-05-16 | 2017-07-18 | 中国华电科工集团有限公司 | The low-level (stack-gas) economizer and its control method of a kind of accumulatingdust |
| CN107559804A (en) * | 2017-09-19 | 2018-01-09 | 深圳市能源环保有限公司 | A kind of garbage burning boiler superheater system |
| CN109708097A (en) * | 2019-02-25 | 2019-05-03 | 济南锅炉集团有限公司 | One kind is from the anti-blocking flying dust separated structure of deashing |
| CN111795379A (en) * | 2020-08-07 | 2020-10-20 | 无锡华光环保能源集团股份有限公司 | Circulating fluidized bed boiler for burning biomass |
| CN112146096A (en) * | 2020-09-30 | 2020-12-29 | 无锡华光环保能源集团股份有限公司 | Fly ash collecting device in grate waste incinerator |
| CN113917079A (en) * | 2021-09-30 | 2022-01-11 | 北京中科润宇环保科技股份有限公司 | Accurate measurement method for flue gas volume of incinerator of household garbage incineration plant |
-
2012
- 2012-04-26 CN CN2012201823977U patent/CN202511294U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121587A (en) * | 2014-08-06 | 2014-10-29 | 无锡华光锅炉股份有限公司 | Smoke baffle structure of garbage incineration furnace |
| CN104456499A (en) * | 2014-11-27 | 2015-03-25 | 江苏太湖锅炉股份有限公司 | Waste heat boiler structure with L-shaped combined heated face |
| CN106958809A (en) * | 2017-05-16 | 2017-07-18 | 中国华电科工集团有限公司 | The low-level (stack-gas) economizer and its control method of a kind of accumulatingdust |
| CN106958809B (en) * | 2017-05-16 | 2023-05-05 | 中国华电科工集团有限公司 | Low-temperature economizer capable of preventing dust deposit and control method thereof |
| CN107559804A (en) * | 2017-09-19 | 2018-01-09 | 深圳市能源环保有限公司 | A kind of garbage burning boiler superheater system |
| CN109708097A (en) * | 2019-02-25 | 2019-05-03 | 济南锅炉集团有限公司 | One kind is from the anti-blocking flying dust separated structure of deashing |
| CN111795379A (en) * | 2020-08-07 | 2020-10-20 | 无锡华光环保能源集团股份有限公司 | Circulating fluidized bed boiler for burning biomass |
| CN112146096A (en) * | 2020-09-30 | 2020-12-29 | 无锡华光环保能源集团股份有限公司 | Fly ash collecting device in grate waste incinerator |
| CN113917079A (en) * | 2021-09-30 | 2022-01-11 | 北京中科润宇环保科技股份有限公司 | Accurate measurement method for flue gas volume of incinerator of household garbage incineration plant |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
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| CX01 | Expiry of patent term |