CN203731397U - Secondary combustion circulating fluidized bed boiler and desulphurization system thereof - Google Patents
Secondary combustion circulating fluidized bed boiler and desulphurization system thereof Download PDFInfo
- Publication number
- CN203731397U CN203731397U CN201420128322.XU CN201420128322U CN203731397U CN 203731397 U CN203731397 U CN 203731397U CN 201420128322 U CN201420128322 U CN 201420128322U CN 203731397 U CN203731397 U CN 203731397U
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- CN
- China
- Prior art keywords
- cyclone separator
- time burning
- circulating line
- economizer
- spray column
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Treating Waste Gases (AREA)
- Air Supply (AREA)
Abstract
The utility model discloses a secondary combustion circulating fluidized bed boiler and a desulphurization system thereof. The boiler comprises a conveyor, a boiler body, a storage silo, a spiral conveyor, a cyclone separator, an air supply system, a drainage device, an economizer, an air preheater, a spray tower and a primary desulphurization device, wherein a connecting part between a circulating pipeline and the cyclone separator is in a funnel shape with the big upper part and the small lower part; the other end of the circulating pipeline is connected with the boiler body; a turbine is arranged at the other end of the circulating pipeline; and an oxygenating machine is arranged at the other end of the circulating pipeline. According to the boiler, fuel which is not combusted sufficiently is oxygenated and then sent into the boiler body for secondary combustion, and then flue gas is sent into the spray tower for particle dissolution and desulphurization treatment, so that a treatment effect is good, atmospheric pollution is reduced, and an energy utilization ratio is further increased.
Description
Technical field
The utility model relates to a kind of boiler, especially a kind of second-time burning CFBB and desufurization system thereof.
Background technology
Nowadays, environmental problem has become the focus that people pay close attention to, atmosphere pollution is more and more serious, its main cause is the burning of coal, and burn insufficient, it is main pushing hands, coal burning is insufficient, not only can produce nitrogen oxide and sulfide, but also can be with fine particle, and these fine particles are discharged in atmosphere, because industrial chimney is very high, fine particle is along with air-flow wafts aloft, had a strong impact on air quality, wherein, the slowly sedimentation of larger particle, and trickle particle can float aloft always, larger particle descends slowly and lightly in scope, the leaf on trees or lawn etc. can float last layer soil, fine particulates is assembled many, be subject to form haze after airflow influence, affect the healthy of people.Although, there are a lot of fume treatment auxiliaries, structure is comparatively complicated, and huge, floor space is large, for the place that some factory sites are limited, this equipment cannot be installed, and the poor processing effect to flue gas.
Utility model content
The utility model is in order to solve the deficiency of existing fume treatment auxiliary, a kind of second-time burning CFBB and desufurization system thereof are provided simultaneously, adopt the mode of second-time burning, and the particle in flue gas and sulfide are processed, simple in structure, treatment effect is good.
The technical solution adopted in the utility model is:
A kind of second-time burning CFBB, comprise conveyer, body of heater, storage bin, auger conveyor, cyclone separator, supply air system, flow diverter, economizer, air preheater, described conveyer is arranged at the top of described storage bin obliquely, below described storage bin, be provided with described auger conveyor, described auger conveyor is driven by motor, described lower portion of furnace body is provided with draft chamber, described draft chamber is connected with supply air system, described upper of furnace body surrounding is hot and cold water exchange wall, described upper of furnace body is provided with mouth, described mouth is trapezoidal, described mouth one end is connected with described cyclone separator one end, the described cyclone separator other end is connected with flow diverter, described cyclone separator bottom is provided with circulating line, the infundibulate that described circulating line and described cyclone separator junction are big up and small down, the described circulating line other end is connected with described body of heater, the described circulating line other end is provided with turbine, on the described circulating line other end, be also provided with oxygenating machine, described flow diverter is connected with described economizer, and described economizer is connected with described air preheater, described air preheater is connected with outlet flue.
Further, described oxygenating machine is blower fan, and flow is 125-150m3/h, and along flue gas flow direction direction, described blower fan is arranged on before described turbine.
Further, also comprise cigarette plate, described cigarette plate is arranged between described flow diverter and described economizer, for adjusting flue gas flow size.
The utility model also comprises a kind of desufurization system, and its technical scheme is:
A desufurization system, comprises spray column, and described spray column is connected with first grade desulfurizing device, and described spray column is also connected with above-mentioned second-time burning CFBB, and described spray column is connected with the outlet flue of described second-time burning CFBB.
Further, described spray column top is provided with shower nozzle, and top is provided with fume inlet passage, and bottom is provided with smoke-outlet flue.
Further, described shower nozzle is two or more.
The utility model screens flue gas, by the sufficient particle of unburned again sedimentation and this part particle is carried out to oxygenation, carries out second-time burning in body of heater, after burning, flue gas is caused to desufurization system to flue gas dust-removal and desulfurizing again.Second-time burning CFBB of the present utility model and desufurization system thereof are simple in structure, and dust-removal and desulfurizing is effective.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of second-time burning CFBB of the utility model;
Fig. 2 is the structural representation of a kind of second-time burning CFBB of the utility model and desufurization system thereof.
In figure: conveyer 1, body of heater 2, storage bin 3, auger conveyor 4, cyclone separator 5, supply air system 6, flow diverter 7, economizer 8, air preheater 9, draft chamber 10, blower fan 11, hot and cold water exchange wall 12, mouth 13, circulating line 14, turbine 15, cigarette plate 16, spray column 17, first grade desulfurizing device 18, shower nozzle 19.
The specific embodiment
Below in conjunction with accompanying drawing, second-time burning CFBB of the present utility model and desufurization system thereof are described in detail.
A kind of second-time burning CFBB, comprise conveyer, body of heater, storage bin, auger conveyor, cyclone separator, supply air system, flow diverter, economizer, air preheater, described conveyer is arranged at the top of described storage bin obliquely, below described storage bin, be provided with described auger conveyor, described auger conveyor is driven by motor, described lower portion of furnace body is provided with draft chamber, described draft chamber is connected with supply air system, described upper of furnace body surrounding is hot and cold water exchange wall, described upper of furnace body is provided with mouth, described mouth is trapezoidal, described mouth one end is connected with described cyclone separator one end, the described cyclone separator other end is connected with flow diverter, described cyclone separator bottom is provided with circulating line, the infundibulate that described circulating line and described cyclone separator junction are big up and small down, the described circulating line other end is connected with described body of heater, the described circulating line other end is provided with turbine, on the described circulating line other end, be also provided with oxygenating machine, described flow diverter is connected with described economizer, and described economizer is connected with described air preheater, described air preheater is connected with outlet flue.
Further, described oxygenating machine is blower fan, and flow is 125-150m3/h, and along flue gas flow direction direction, described blower fan is arranged on before described turbine.
Further, also comprise cigarette plate, described cigarette plate is arranged between described flow diverter and described economizer, for adjusting flue gas flow size.
Operator is filled to fuel on conveyer, and conveyer is delivered to storage bin by fuel, and the auger conveyor that storage bin bottom is provided with pushes to fuel in body of heater.Under the fan action being provided with at lower portion of furnace body, fuel in body of heater burns, flue gas rises to mouth, because mouth is trapezoidal, one end flow velocity that mouth radius is little is very fast, and larger one end flow velocity is more slow, is convenient to the endocorpuscular separate and subside of flue gas, particles settling in flue gas, to circulating line, enters body of heater and carries out second-time burning under the drainage of turbine and the effect of oxygenating machine.
The invention also discloses a kind of desufurization system, comprise spray column, described spray column is connected with first grade desulfurizing device, and described spray column is also connected with above-mentioned second-time burning CFBB, and described spray column is connected with the outlet flue of described second-time burning CFBB.
Further, described spray column top is provided with shower nozzle, and top is provided with fume inlet passage, and bottom is provided with smoke-outlet flue.
Further, described shower nozzle is two or more.
From the outlet flue of second-time burning CFBB flue gas out, enter spray column, spray column top is provided with at least two shower nozzles, make particle and part sulfur oxide in flue gas soluble in water, gained flue gas is not again through the further desulfurization of first grade desulfurizing device (because desulfurizer is prior art, again repeating).
The utility model will not fire to send into after sufficient fuel oxygenating and in body of heater, will carry out second-time burning, then flue gas be sent into the molten particle of spray column and except sulphuring treatment, treatment effect is good, has reduced the pollution to atmosphere, and energy utilization rate is further improved.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by the described protection domain with claim.
Claims (6)
1. a second-time burning CFBB, it is characterized in that, comprise conveyer, body of heater, storage bin, auger conveyor, cyclone separator, supply air system, flow diverter, economizer, air preheater, described conveyer is arranged at the top of described storage bin obliquely, below described storage bin, be provided with described auger conveyor, described auger conveyor is driven by motor, described lower portion of furnace body is provided with draft chamber, described draft chamber is connected with supply air system, described upper of furnace body surrounding is hot and cold water exchange wall, described upper of furnace body is provided with mouth, described mouth is trapezoidal, described mouth one end is connected with described cyclone separator one end, the described cyclone separator other end is connected with flow diverter, described cyclone separator bottom is provided with circulating line, the infundibulate that described circulating line and described cyclone separator junction are big up and small down, the described circulating line other end is connected with described body of heater, the described circulating line other end is provided with turbine, on the described circulating line other end, be also provided with oxygenating machine, described flow diverter is connected with described economizer, and described economizer is connected with described air preheater, described air preheater is connected with outlet flue.
2. a kind of second-time burning CFBB according to claim 1, is characterized in that, described oxygenating machine is blower fan, and flow is 125-150m3/h, and along flue gas flow direction direction, described blower fan is arranged on before described turbine.
3. a kind of second-time burning CFBB according to claim 2, is characterized in that, also comprises cigarette plate, and described cigarette plate is arranged between described flow diverter and described economizer, for adjusting flue gas flow size.
4. a desufurization system, comprise spray column, described spray column is connected with first grade desulfurizing device, it is characterized in that, also comprise the second-time burning CFBB described in claim 1-3 any one, described spray column is connected with the outlet flue of described second-time burning CFBB.
5. a kind of desufurization system according to claim 4, is characterized in that, described spray column top is provided with shower nozzle, and top is provided with fume inlet passage, and bottom is provided with smoke-outlet flue.
6. a kind of desufurization system according to claim 5, is characterized in that, described shower nozzle is two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420128322.XU CN203731397U (en) | 2014-03-20 | 2014-03-20 | Secondary combustion circulating fluidized bed boiler and desulphurization system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420128322.XU CN203731397U (en) | 2014-03-20 | 2014-03-20 | Secondary combustion circulating fluidized bed boiler and desulphurization system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203731397U true CN203731397U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420128322.XU Expired - Fee Related CN203731397U (en) | 2014-03-20 | 2014-03-20 | Secondary combustion circulating fluidized bed boiler and desulphurization system thereof |
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| CN (1) | CN203731397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135420A (en) * | 2015-08-26 | 2015-12-09 | 烟台龙源电力技术股份有限公司 | Fly ash secondary combustion system and method for improving fly ash germanium grade |
| CN111550776A (en) * | 2020-05-07 | 2020-08-18 | 中国科学院工程热物理研究所 | Air-powder regulation and control method and equipment for preheating chamber of circulating fluidized bed |
-
2014
- 2014-03-20 CN CN201420128322.XU patent/CN203731397U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135420A (en) * | 2015-08-26 | 2015-12-09 | 烟台龙源电力技术股份有限公司 | Fly ash secondary combustion system and method for improving fly ash germanium grade |
| CN111550776A (en) * | 2020-05-07 | 2020-08-18 | 中国科学院工程热物理研究所 | Air-powder regulation and control method and equipment for preheating chamber of circulating fluidized bed |
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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 |
Granted publication date: 20140723 Termination date: 20160320 |
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| CF01 | Termination of patent right due to non-payment of annual fee |