CN107559804A - A kind of garbage burning boiler superheater system - Google Patents
A kind of garbage burning boiler superheater system Download PDFInfo
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- CN107559804A CN107559804A CN201710852431.4A CN201710852431A CN107559804A CN 107559804 A CN107559804 A CN 107559804A CN 201710852431 A CN201710852431 A CN 201710852431A CN 107559804 A CN107559804 A CN 107559804A
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- superheater
- flue
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- hearth
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Abstract
To solve the above problems, the present invention provides a kind of garbage burning boiler superheater system, water cooling panel superheater is set in burner hearth, burner hearth is divided into front furnace by water cooling panel superheater in transverse direction, two parts of rear hearth, by incinerator dryer section, flue gas is limited in front furnace and flowed caused by pyrolysis section, and burning zone, flue gas, which is limited in rear hearth, after high temperature caused by after-flame section flows, and three-stagesuperheater is arranged in rear hearth in advance, further improve the heating temperature of three-stagesuperheater, and two-stage superheater before being also set up in horizontal flue, preceding two-stage superheater is arranged on before the two-stage superheater, in the case where control boiler high temperature heating surface is not subject to heavy corrosion, the efficiency of General Promotion boiler.
Description
Technical field
It is heated equipment, more particularly to a kind of garbage burning boiler superheater system the present invention relates to waste incinerator.
Background technology
In view of compared with the technologies of garbage disposal such as sanitary landfills, compost, incineration treatment technology has volume reduction, weight loss effect bright
Aobvious, innoxious thoroughly and floor space is small, and waste heat can be used for heat supply or generating in addition, and it is excellent that secondary pollution is less and controllable etc.
Point, the mainstream technology of China's urban garbage disposal has been increasingly becoming it.
However, due to containing substantial amounts of Cl elements in rubbish, it can produce the etchant gases such as HCl, Cl2 and other after burning
Corrosivity chloride, corrode boiler high temperature heating surface, and this corrosion phenomenon can with the raising of boiler main steam condition and more
Adding seriously, influences the safe and stable operation and economic benefit of power plant.Therefore, in order to avoid corroding section, at present more than waste incineration
The main steam condition of heat boiler is mostly 4.0MPa/400 DEG C and 6.5MPa/450 DEG C, and plant thermal efficiency is still universal relatively low, can only
Reach 21% -23%.Such as the steam parameter of garbage burning boiler is improved to 9.8MPa/500 DEG C, the thermal efficiency of power plant can carry
Up to 28%, income is greatly increased, but for current garbage burning boiler, boiler high temperature heating surface will bear serious corruption
The risk of erosion, even if taking special anti-corrosion measure, the cost paid is also extremely expensive, is financially infeasible
's.
The content of the invention
To solve the above problems, the present invention provides a kind of garbage burning boiler superheater system, water cooling is set in burner hearth
Burner hearth is divided into two front furnace, rear hearth parts by panel superheater, water cooling panel superheater in transverse direction, by incinerator dryer section,
After flue gas is limited in front furnace and flowed caused by pyrolysis section, and flue gas is limited in after high temperature caused by burning zone, after-flame section
Flowed in burner hearth, and three-stagesuperheater be arranged in rear hearth in advance, further improve the heating temperature of three-stagesuperheater,
And two-stage superheater before being also set up in horizontal flue, the first two superheater are arranged on before the two-stage superheater, are being controlled
In the case that boiler high temperature heating surface is not subject to heavy corrosion, the efficiency of General Promotion boiler.
It is a kind of garbage burning boiler superheater system, mainly including stove that the present invention, which solves technical problem and provides scheme,
Row, burner hearth, flue and thermoreceptor, the fire grate include dryer section, pyrolysis section, burning zone, after-flame section, and the flue includes successively
First vertical gas pass, the second vertical gas pass, the 3rd vertical gas pass and horizontal flue, the thermoreceptor include one-level evaporator, three
Level superheater, two-stage superheater, primary superheater, secondary evaporimeter and economizer group, in horizontal flue interior edge flow of flue gas side
To being sequentially arranged the one-level evaporator, two-stage superheater, primary superheater, secondary evaporimeter and economizer group,
It is characterized in that setting water cooling panel superheater in the burner hearth, the water cooling panel superheater divides burner hearth in transverse direction
Two front furnace, rear hearth parts are cut into, flue gas caused by incinerator dryer section, pyrolysis section is limited in front furnace and flowed,
And flue gas is limited in rear hearth and flowed after high temperature caused by burning zone, after-flame section, and by the position of the three-stagesuperheater
Put and be arranged in advance in rear hearth, further improve the heating temperature of three-stagesuperheater, and also set in the horizontal flue
Preceding two-stage superheater is put, the preceding two-stage superheater is arranged on before the two-stage superheater, the efficiency of General Promotion boiler；
The preferred scheme of the present invention, the three-stagesuperheater use coil heat exchanger.
Beneficial effects of the present invention：The present invention is intended to provide a kind of garbage burning boiler superheater system, in the burner hearth
Burner hearth is divided into two front furnace, rear hearth parts by interior setting water cooling panel superheater, the water cooling panel superheater in transverse direction, will
Flue gas caused by incinerator dryer section, pyrolysis section, which is limited in front furnace, to be flowed, and cigarette after high temperature caused by burning zone, after-flame section
Gas, which is limited in rear hearth, to be flowed, and the three-stagesuperheater is arranged in rear hearth in advance, further improves three-level
The heating temperature of superheater, and two-stage superheater before being also set up in the horizontal flue, the preceding two-stage superheater are set
Before the two-stage superheater, the efficiency of General Promotion boiler.
Brief description of the drawings
Fig. 1 is the structure arrangement schematic diagram of prior art one embodiment.
Fig. 2 is the structure arrangement schematic diagram of one embodiment of the invention.
In figure：
1 body of heater,
1.1 garbage inlets,
1.2 fire grates, 1.21 dryer sections, 1.22 pyrolysis sections, 1.23 burning zones, 1.24 after-flame sections,
1.3 ash ports,
1.4 flue gases, flue gas before 1.4A, flue gas after 1.4B,
1.5 burner hearths, 1.5A front furnaces, 1.5B rear hearths,
1.6 water cooling panel superheaters,
1.7A First airs, 1.7B Secondary Airs,
At 1.8 burner hearth aditus laryngis；
2 flues, 2.11 first vertical gas passes, 2.12 second vertical gas passes, 2.13 the 3rd vertical gas passes；2.2 horizontal flue；
3 thermoreceptors, 3.1 one-level evaporators, two-stage superheater before 3.2 three-stagesuperheaters, 3.3 two-stage superheaters, 3.3A,
3.4 primary superheaters, 3.5 secondary evaporimeters, 3.6 economizers.
Embodiment
Fig. 1 is the structure arrangement schematic diagram of prior art one embodiment.Shown in figure, a kind of garbage burning boiler overheat
Device system, main to include fire grate 1.2, burner hearth 1.5,2 flues and thermoreceptor 3, fire grate 1.2 includes dryer section 1.21, pyrolysis section
1.22nd, burning zone 1.23, after-flame section 1.24, flue 2 include the first vertical gas pass 2.11, the second vertical gas pass 2.12 successively, the
Three vertical gas passes 2.13 and horizontal flue 2.2, thermoreceptor 3 include one-level evaporator 3.1, three-stagesuperheater 3.2, two-stage superheater
3.3rd, primary superheater 3.4, secondary evaporimeter 3.5 and economizer group 3.6, the interior edge flow of flue gas direction of horizontal flue 2.2 according to
Secondary arrangement one-level evaporator 3.1, two-stage superheater 3.3, primary superheater 3.4, secondary evaporimeter 3.5 and economizer group 3.6.Figure
Shown in 1, in the prior art, three-stagesuperheater 3.3 be arranged on after one-level evaporator 3.1 and positioned at two-stage superheater 3.3 it
Before.
Shown in Fig. 1, in the prior art, body of heater 1 mainly includes fire grate, garbage inlet 1.1, ash port 1.3 and burner hearth
1.5, fire grate is divided into dryer section 1.21, pyrolysis section 1.22, burning zone 1.23 and the four-stage of after-flame section 1.24, in dryer section
1.21st, pyrolysis section 1.22, burning zone 1.23 and the downside of after-flame section 1.24 are respectively connected to First air 1.7A and play combustion-supporting effect.
In Refuse Incineration Process, exhaust gas components caused by different stove sections are widely different, if dryer section, pyrolysis section are due to temperature
Spend relatively low, its caused flue-gas temperature is relatively low, and oxygen content is higher, contains CO, CH4Deng fuel gas, while also contain meeting
HCl, Cl of corrosion are produced to waste heat boiler heating surface2It is strong Deng etchant gas, corrosivity；And burning zone and after-flame section are due to temperature
It is higher, therefore caused flue-gas temperature is higher, oxygen content is relatively low, and corrosive gas content is few, and corrosivity is weak.Shown in figure, it is existing
Have in technology, dryer section, pyrolysis section, burning zone and after-flame section share a burner hearth 1.5, different components caused by each stove section
Flue gas is mixed to form flue gas 1.4 in burner hearth, and flue gas 1.4 is in burner hearth 1.5 in flow process.Due in high temperature hyperoxia shape
State, therefore pernicious gas is easily produced, corrode to caused by boiler heating surface very serious.
In the prior art, because the etchant gas such as caused HCl, Cl2 after incineration firing and other corrosivity chlorides will
Corrode boiler high temperature heating surface, and this corrosion phenomenon can be more serious with the raising of boiler main steam condition, influences electricity
The safe and stable operation and economic benefit of factory.Therefore, in order to avoid corrode section, at present refuse incineration exhaust-heating boiler main steam
Parameter is mostly 4.0MPa/400 DEG C and 6.5MPa/450 DEG C, and plant thermal efficiency is still universal relatively low, and 21% -23%.Such as by rubbish
The steam parameter of burning boiler is improved to 9.8MPa/500 DEG C, and the thermal efficiency of power plant can be improved to 28%, greatly increase income, but
For current garbage burning boiler, boiler high temperature heating surface will bear the risk of heavy corrosion, even if taking special
Anti-corrosion measure, the cost paid are also extremely expensive, are financially infeasible.
Fig. 2 is the structure arrangement schematic diagram of one embodiment of the invention.Shown in figure, unlike the prior art, this
In example, water cooling panel superheater 1.6 is set in burner hearth 1.5, and burner hearth is divided into front furnace by water cooling panel superheater 1.6 in transverse direction
Two 1.5A, rear hearth 1.5B parts, before preceding flue gas 1.4A is limited in caused by incinerator dryer section 1.21, pyrolysis section 1.22
Flowed in burner hearth 1.5A, and flue gas 1.4B after high temperature caused by burning zone 1.23, after-flame section 1.24 is limited in rear hearth 1.5B
Middle flowing, and the position of three-stagesuperheater 3.2 is arranged in rear hearth 1.5B in advance, further improve three-stagesuperheater
3.2 heating temperature, and two-stage superheater 3.3A before being also set up in horizontal flue 2.2, preceding two-stage superheater 3.3A are set
Before two-stage superheater 3.3, so as to the efficiency of General Promotion boiler.
In this example, because rear flue gas 1.4B is limited in rear hearth 1.5B caused by burning zone 1.23, after-flame section 1.24
Flowing, makes the rear flue gas 1.4B of high temperature be in the environment of hypoxemia, and also set up three-stagesuperheater in rear hearth 1.5B
3.2, temperature further reduces when the rear flue gas 1.4B is passed through three-stagesuperheater 3.2, and preceding flue gas 1.4A and rear flue gas 1.4B is in stove
Converge in thorax positioned at the top of water cooling panel superheater 1.6,1.9 spray into Secondary Air 1.8B at burner hearth aditus laryngis, make preceding flue gas 1.4A, rear cigarette
Mixed flue gas after gas 1.4B mixes with Secondary Air 1.7B further burns, and further reduces the formation of harmful substance.
In this example, three-stagesuperheater uses coil heat exchanger.
Using garbage burning boiler superheater system proposed by the present invention, Boiler Steam parameter can be improved to 9.8MPa/500
DEG C, the thermal efficiency of power plant can be improved to 28%, greatly increase income.For vapor (steam) temperature is heated into 500 DEG C, by preceding secondary superheater
Device 3.3A is arranged in the position of former three-stagesuperheater 3.2, and so preceding two-stage superheater 3.3A cans use former three-stagesuperheater
3.2 material, while vapor (steam) temperature is controlled at 450 DEG C or so, to reduce corrosion risk, ensure two-stage superheater uses the longevity
Life and economy.Direct-contact desuperheater is arranged between primary superheater and two-stage superheater, between two-stage superheater and three-stagesuperheater
Direct-contact desuperheater is arranged, to control vapor (steam) temperature.
The garbage burning boiler three-stagesuperheater of the present invention can use currently used snakelike tubular construction, and tubing can be selected
TP347H anti-corrosion materials；To control three-stagesuperheater tube wall temperature, using down current arrangement；Slagging is reduced, using big tube panel spacing.
Claims (2)
1. a kind of garbage burning boiler superheater system, mainly include including fire grate, burner hearth, flue and thermoreceptor, the fire grate
Dryer section, pyrolysis section, burning zone, after-flame section, the flue include the first vertical gas pass, the second vertical gas pass successively, and the 3rd hangs down
Straight flue and horizontal flue, the thermoreceptor include one-level evaporator, three-stagesuperheater, two-stage superheater, primary superheater, two
Level evaporator and economizer group, the one-level evaporator, secondary superheater are sequentially arranged in horizontal flue interior edge flow of flue gas direction
Device, primary superheater, secondary evaporimeter and economizer group,
It is characterized in that setting water cooling panel superheater in the burner hearth, burner hearth is divided into by the water cooling panel superheater in transverse direction
Two front furnace, rear hearth parts, flue gas caused by incinerator dryer section, pyrolysis section is limited in front furnace and flowed, and is fired
Flue gas, which is limited in rear hearth, after high temperature caused by burning section, after-flame section is flowed, and the position of the three-stagesuperheater is carried
Before be arranged in rear hearth, further improve the heating temperature of three-stagesuperheater, and before being also set up in the horizontal flue
Two-stage superheater, the preceding two-stage superheater are arranged on before the two-stage superheater, the efficiency of General Promotion boiler.
2. a kind of waste incinerator of low nitrogen burning according to claim 1, it is characterized in that, the three-stagesuperheater uses
Coil heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852431.4A CN107559804A (en) | 2017-09-19 | 2017-09-19 | A kind of garbage burning boiler superheater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852431.4A CN107559804A (en) | 2017-09-19 | 2017-09-19 | A kind of garbage burning boiler superheater system |
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| Publication Number | Publication Date |
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| CN107559804A true CN107559804A (en) | 2018-01-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710852431.4A Pending CN107559804A (en) | 2017-09-19 | 2017-09-19 | A kind of garbage burning boiler superheater system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644779A (en) * | 2018-07-17 | 2018-10-12 | 北京环清环境科技有限公司 | A kind of small evaporator incinerator |
| CN109099434A (en) * | 2018-07-23 | 2018-12-28 | 深圳市能源环保有限公司 | Low-nitrogen combustion control method for garbage incinerator |
| WO2019056184A1 (en) * | 2017-09-19 | 2019-03-28 | 深圳市能源环保有限公司 | Waste incineration boiler superheater system |
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| JP2000146139A (en) * | 1998-08-20 | 2000-05-26 | Asea Brown Boveri Ag | Steam generator generating superheated steam for incineration facility using corrosive flue gas |
| CN102128443A (en) * | 2011-03-08 | 2011-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Pulverized coal boiler suitable for ultrahigh steam temperature |
| CN202511294U (en) * | 2012-04-26 | 2012-10-31 | 江苏天楹环保能源股份有限公司 | Lower-heating value low-load garbage incineration waste heat boiler |
| CN202884875U (en) * | 2012-10-18 | 2013-04-17 | 清华大学 | Boiler flue structure |
| CN204739576U (en) * | 2015-06-18 | 2015-11-04 | 无锡华光锅炉股份有限公司 | Reheat pulverized coal boiler |
| CN105937758A (en) * | 2016-06-14 | 2016-09-14 | 廖洁芬 | Biomass direct-fired fire grate boiler |
| CN105953231A (en) * | 2016-06-24 | 2016-09-21 | 无锡华光锅炉股份有限公司 | High-parameter waste incineration boiler with reheating function |
| CN207378803U (en) * | 2017-09-19 | 2018-05-18 | 深圳市能源环保有限公司 | A kind of garbage burning boiler superheater system |
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2017
- 2017-09-19 CN CN201710852431.4A patent/CN107559804A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000146139A (en) * | 1998-08-20 | 2000-05-26 | Asea Brown Boveri Ag | Steam generator generating superheated steam for incineration facility using corrosive flue gas |
| CN102128443A (en) * | 2011-03-08 | 2011-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Pulverized coal boiler suitable for ultrahigh steam temperature |
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| CN204739576U (en) * | 2015-06-18 | 2015-11-04 | 无锡华光锅炉股份有限公司 | Reheat pulverized coal boiler |
| CN105937758A (en) * | 2016-06-14 | 2016-09-14 | 廖洁芬 | Biomass direct-fired fire grate boiler |
| CN105953231A (en) * | 2016-06-24 | 2016-09-21 | 无锡华光锅炉股份有限公司 | High-parameter waste incineration boiler with reheating function |
| CN207378803U (en) * | 2017-09-19 | 2018-05-18 | 深圳市能源环保有限公司 | A kind of garbage burning boiler superheater system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056184A1 (en) * | 2017-09-19 | 2019-03-28 | 深圳市能源环保有限公司 | Waste incineration boiler superheater system |
| CN108644779A (en) * | 2018-07-17 | 2018-10-12 | 北京环清环境科技有限公司 | A kind of small evaporator incinerator |
| CN109099434A (en) * | 2018-07-23 | 2018-12-28 | 深圳市能源环保有限公司 | Low-nitrogen combustion control method for garbage incinerator |
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Application publication date: 20180109 |