CN101385941B - Efficient circulating fluid bed flue-gas desulfurizing device - Google Patents
Efficient circulating fluid bed flue-gas desulfurizing device Download PDFInfo
- Publication number
- CN101385941B CN101385941B CN2007101474749A CN200710147474A CN101385941B CN 101385941 B CN101385941 B CN 101385941B CN 2007101474749 A CN2007101474749 A CN 2007101474749A CN 200710147474 A CN200710147474 A CN 200710147474A CN 101385941 B CN101385941 B CN 101385941B
- Authority
- CN
- China
- Prior art keywords
- desulfurizing tower
- smoke
- desulfurizing
- inlet
- ash
- Prior art date
- 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
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
A smoke desulfurizing device of a high-effective circulating fluid bed belongs to the field of industrial smoke purification, and is suitable for removing sulfur oxide and other harmful acidic gas in smoke discharged from boilers or other combustion devices. The smoke desulfurizing device is composed of a desulfurizing tower, a smoke inlet, a smoke outlet and an ash discharge opening, wherein, the desulfurizing tower is composed of the bottom of the desulfurizing tower, a venturi fluid segment, and the upper part of the desulfurizing tower; the smoke inlet is connected with the bottom of the desulfurizing tower; the smoke outlet is connected with the upper part of the desulfurizing tower; the ash discharge opening is arranged at the bottom of the desulfurizing tower; the upper part of the venturi fluid segment is provided with absorbing agent, recirculating ash and air flow which are uniformly distributed along the circumference of the wall surfaces of the desulfurizing tower in pairs; the absorbing agent, the recirculating ash and the air flow are mixed to form an air-powder mixture inlet and an atomizing nozzle inlet. The air flow of the air-powder mixture is directly mixed with water fog flow formed by the atomizing nozzle in the desulfurizing tower, and the smoke entering the desulfurizing tower is fully mixed and reacts with the uniformly-humidified absorbing agent and the recirculating ash which are uniformly distributed in the desulfurizing tower so as to remove acidic gas in the smoke.
Description
The present invention relates to a kind of flue gas circulating fluidized bed desulfurization device, belong to the environmental protection technical field of industrial flue gas cleaning, be adapted to remove sulfur oxide and other harmful sour gas in the flue gas of discharging by boiler or other combustion apparatus, as HCl, HF etc.
People's Republic of China's environmental protection industry standard flue gas desulphurization engineering legislation is described as flue gas circulating fluidized bed method; flue gas circulating fluidized bed mainly by the absorbent preparation system; the sulfur dioxide absorption system; dust pelletizing system; the absorbent recirculating system; composition such as automatic control and on-line monitoring system; enter the desulfurizing tower main body behind the flue gas process primary dust removing device; absorbent can be the dry powder shape; low amounts of water enters respectively in the desulfurization reaction tower as humidification water and (also absorbent and water can be mixed and made into slurries simultaneously; spray in the desulfurization reaction tower again); flue gas fully mixes with the absorbent and the recirculation ash of adding; reaction; remove sour gas in the flue gas; flue gas is discharged by the outlet of desulfurizing tower top; through separator; after the secondary ash collector dedusting (also can double as separator); solid particle is separated; major part is sent in the tower and is recycled; flue gas continues to enter atmosphere through air-introduced machine by chimney.Circulating fluid bed flue-gas desulfurizing device is the sulfur dioxide absorption system of above-mentioned flue gas circulating fluidized bed method, comprise: the desulfurizing tower of forming by desulfurizing tower bottom, venturi fluidisation section, desulfurizing tower top, the smoke inlet of desulfurizing tower, exhanst gas outlet, be connected on the grey slag outlet of the bottom of reaction tower, be located at desulfurizing tower top absorbent inlet, recirculation ash inlet, the multilayer atomizer, atomizer that are located at desulfurizing tower top are along desulfurizing tower wall circumference uniform distribution.Show from theoretical research and experimental project experience, need to guarantee that desulfurizing agent has certain water content in the circulating fluid bed flue-gas desulfurizing process, the particle surface water content is increased at 0.08 o'clock from 0, desulphurization reaction speed sharply increases, and water content is increased at 0.5 o'clock from 0.08, reaction rate increases slow and is stabilized to given pace, as seen excessive increase water content is little to the influence of desulfurization, excessive increase water content can influence the normal operation of system simultaneously, as reuniting, stop up etc., in engineering reality, can be by the water capacity in the bed, dew-point temperature is controlled injection flow rate. but because absorbent, the recirculation ash is concentrated and is entered desulfurizing tower, in desulfurizing tower, form absorbent, recirculation ash concentration skewness, through multilayer atomizer humidification, cause absorbent, recirculation ash particle surface water content is inhomogeneous, causes that desulfuration efficiency reduces or reunion, blockage problem.
In order to solve the absorbent that present circulating fluid bed flue-gas desulfurizing device exists, recirculation ash particle surface water content is inhomogeneous, cause that desulfuration efficiency reduces or reunion, blockage problem, the invention provides a kind of efficient circulating fluid bed flue-gas desulfurizing device, on the basis of present circulating fluid bed flue-gas desulfurizing device, with absorbent, the recirculation ash mixes the formation wind powder mixture with air-flow, demultiplexing enters desulfurizing tower again, every transportation work style powder mixture is entering the desulfurizing tower place and one road atomizer is arranged together, the wind powder mixture air-flow is blended directly in desulfurizing tower with the spray stream that atomizer forms, wind powder mixture air flow inlet and spray stream inlet are in pairs along desulfurizing tower wall circumference uniform distribution, so just improved absorbent, the even situation of recirculation ash particle surface water content, make absorbent, the recirculation ash can be evenly distributed in the desulfurizing tower, in addition can be by the autotelic control absorbent of the control atomizing water yield, recirculation ash particle surface water content, can improve desulphurization reaction speed greatly like this, shorten the reaction time, dwindle the height of desulfurizing tower greatly, diameter, reduce the initial outlay of desulfurization project, because absorbent, recirculation ash particle surface water content is controlled, reunites, blockage problem is readily solved.Absorbent, recirculation ash adopt air-flow to carry, and the layout of absorbent preparation system, absorbent recirculating system can be more flexible.
The present invention realizes like this, by the desulfurizing tower bottom, venturi fluidisation section, the desulfurizing tower that desulfurizing tower top is formed, and the smoke inlet that connects the desulfurizing tower bottom, connect the exhanst gas outlet on desulfurizing tower top, be located at the circulating fluid bed flue-gas desulfurizing device that the grey slag outlet of the bottom of reaction tower is formed, on venturi fluidisation section top in pairs along desulfurizing tower wall circumference uniform distribution absorbent, the recirculation ash mixes formation wind powder mixture inlet and atomizer inlet with air-flow, the wind powder mixture air-flow is blended directly in desulfurizing tower with the spray stream that atomizer forms, air-flow described here can be a flue gas, air, steam, atomizer can be the single fluid atomizer that pressure (hydraulic) water relies on fixed structure atomizing, also can be to use compressed air, the double fluid atomization nozzle of steam atomization water, absorbent can be a calcium lime powder, slaked lime powder or other desulfurizer powders, so just improved absorbent, the even situation of recirculation ash particle surface water content, make absorbent, the recirculation ash can be evenly distributed in the desulfurizing tower, in addition can be by the autotelic control absorbent of the control atomizing water yield, recirculation ash particle surface water content, can improve desulphurization reaction speed greatly like this, solve and reunite, blockage problem.
The invention has the beneficial effects as follows, improved the even situation of absorbent, recirculation ash particle surface water content, absorbent, recirculation ash can be evenly distributed in the desulfurizing tower, in addition can be by the autotelic control absorbent of the control atomizing water yield, recirculation ash particle surface water content, can improve desulphurization reaction speed greatly like this, shorten the reaction time, dwindle height, the diameter of desulfurizing tower greatly, reduce the initial outlay of desulfurization project, because absorbent, recirculation ash particle surface water content are controlled, reunite, blockage problem is readily solved.Absorbent, recirculation ash adopt air-flow to carry, and the layout of absorbent preparation system, absorbent recirculating system can be more flexible.The wind powder mixture air-flow is blended directly in desulfurizing tower with the spray stream that atomizer forms, in fact also quicklime slaking, the whole process of humidification have been realized, can save lime slaking device, calcium hydroxide storehouse and calcium hydroxide fully for the flue gas circulating fluidized bed method that adopts calcium lime powder to make desulfurizing agent measures to powder, conveyer, simplify the absorbent preparation system so greatly, reduced the initial outlay of desulfurization project.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a process principle figure of the present invention.
Fig. 2 is the A--A generalized section.
1. desulfurizing towers bottom among the figure, 2. grey slag outlet, 3. smoke inlet, 4. venturi fluidisation section, 5. water pipe, 6. minute branching pipe, 7. feed channel, 8. air and powder mixer, 9. metering is to the powder device, 10. desulfurizing agent powder storehouse, 11. distributor boxes, 12. branch wind powder pipe roads, 13. desulfurizing tower top, 14. exhanst gas outlets, the grey storehouse of 15. recirculation, 16. the wind powder mixture inlet, 17. atomizers inlet.
Referring to Fig. 1,2, the efficient circulating fluid bed flue-gas desulfurizing device that the present invention proposes is by desulfurizing tower bottom (1), venturi fluidisation section (4), the desulfurizing tower that desulfurizing tower top (13) is formed, and the smoke inlet (3) that connects the desulfurizing tower bottom, connect the exhanst gas outlet (14) on desulfurizing tower top, be located at the grey slag outlet (2) of the bottom of reaction tower, on venturi fluidisation section top in pairs along desulfurizing tower wall circumference uniform distribution absorbent, the recirculation ash mixes formation wind powder mixture inlet (16) and forms with atomizer inlet (17) with air-flow, the desulfurizing agent in desulfurizing agent powder storehouse (10) is admitted to air and powder mixer (8) through metering to powder device (9), the air of certain flow rate is mixed into wind powder mixture with the desulfurizing agent powder through feed channel (7) in air and powder mixer (8), be divided into 4 the tunnel at distributor box (11), wind powder mixture sprays into desulfurizing tower through branch wind powder pipe road (12) by the wind powder mixture inlet (16) that is arranged in desulfurizing tower top (13), water is through water pipe (5), divide branching pipe (6), the atomizer inlet (17) that is arranged in desulfurizing tower top (13) is atomized into water smoke and sprays into desulfurizing tower, the wind powder mixture air-flow is blended directly in desulfurizing tower with the spray stream that atomizer forms, the recirculation ash that recycles in the grey storehouse (15) enters the flow process of desulfurizing tower with above-mentioned consistent, flue gas enters desulfurizing tower from desulfurizing tower bottom (1), quicken in venturi fluidisation section (4), fully mix at the absorbent and the recirculation ash of desulfurizing tower with even humidification and equal portion at desulfurizing tower top (13) flue gas, reaction, remove sour gas in the flue gas, flue gas is discharged through exhanst gas outlet (14) by desulfurizing tower top (13), through separator, after the secondary ash collector dedusting (also can double as separator), solid particle is separated, major part is sent in the tower and is recycled, flue gas continues to enter atmosphere through air-introduced machine by chimney.
Claims (1)
1. efficient circulating fluid bed flue-gas desulfurizing device, by desulfurizing tower, connect the smoke inlet of desulfurizing tower bottom, the grey slag outlet composition that connects the exhanst gas outlet on desulfurizing tower top and be located at the bottom of desulfurizing tower, wherein desulfurizing tower is by the desulfurizing tower bottom, venturi fluidisation section and desulfurizing tower top are formed, it is characterized in that: enter the mouth along desulfurizing tower wall circumference uniform distribution wind powder mixture inlet and atomizer in pairs on venturi fluidisation section top, wherein wind powder mixture is by absorbent, the recirculation ash mixes formation with air-flow, the wind powder mixture air-flow is blended directly in desulfurizing tower with the spray stream that atomizer forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101474749A CN101385941B (en) | 2007-09-14 | 2007-09-14 | Efficient circulating fluid bed flue-gas desulfurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101474749A CN101385941B (en) | 2007-09-14 | 2007-09-14 | Efficient circulating fluid bed flue-gas desulfurizing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101385941A CN101385941A (en) | 2009-03-18 |
| CN101385941B true CN101385941B (en) | 2011-12-21 |
Family
ID=40475730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101474749A Expired - Fee Related CN101385941B (en) | 2007-09-14 | 2007-09-14 | Efficient circulating fluid bed flue-gas desulfurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101385941B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101015154B1 (en) * | 2010-10-05 | 2011-02-16 | 한국에너지기술연구원 | Adsorbent internal and external circulating device and their methods for treatment of high temperature flue gases containing sulfur oxides and boron compounds |
| CN102580517A (en) * | 2011-01-18 | 2012-07-18 | 刘上光 | Fume desulfurization system and method by adopting dried alkali electrostatic spraying and fume humidifying cooling method |
| CN102512944B (en) * | 2011-11-29 | 2014-08-06 | 南京龙玖环境工程有限公司 | Flue gas desulfurizing tower |
| CN102423625A (en) * | 2011-11-29 | 2012-04-25 | 南京龙玖环境工程有限公司 | Circulating fluidized bed flue gas desulfurization tower |
| CN105363337A (en) * | 2015-10-27 | 2016-03-02 | 宁波众茂姚北热电有限公司 | Waste incineration flue gas purifying system |
| CN107238093B (en) * | 2017-07-18 | 2023-12-01 | 太原锅炉集团有限公司 | Adsorption denitration circulating fluidized bed boiler and operation method thereof |
| CN109692567B (en) * | 2017-12-08 | 2024-03-26 | 中电华创电力技术研究有限公司 | Boiler material circulation flue gas purification system |
| CN111408261A (en) * | 2020-04-23 | 2020-07-14 | 山西海洁星环保设备有限公司 | Integrated flue gas purification device and method based on semi-dry desulfurization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2358979Y (en) * | 1999-03-09 | 2000-01-19 | 山东工业大学 | Venturi fluidized bed suspension dry desulfurization device for flue gas |
| CN1401415A (en) * | 2002-09-17 | 2003-03-12 | 山东大学 | Double circulating fluidized bed flue gas desulfurizing device |
| CN1196517C (en) * | 2002-12-12 | 2005-04-13 | 武汉凯迪电力股份有限公司 | Compound cycle typed fluidized technique in dry-process of stack gas desulfurization and desulphurisation reaction tower with high performance |
-
2007
- 2007-09-14 CN CN2007101474749A patent/CN101385941B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2358979Y (en) * | 1999-03-09 | 2000-01-19 | 山东工业大学 | Venturi fluidized bed suspension dry desulfurization device for flue gas |
| CN1401415A (en) * | 2002-09-17 | 2003-03-12 | 山东大学 | Double circulating fluidized bed flue gas desulfurizing device |
| CN1196517C (en) * | 2002-12-12 | 2005-04-13 | 武汉凯迪电力股份有限公司 | Compound cycle typed fluidized technique in dry-process of stack gas desulfurization and desulphurisation reaction tower with high performance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101385941A (en) | 2009-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101385941B (en) | Efficient circulating fluid bed flue-gas desulfurizing device | |
| CN101259365B (en) | Two-stage pre-spraying water circulating fluidized bed desulfurization technique and system thereof | |
| CN106582232A (en) | Synergistic removal tending to zero discharge purification process and equipment for multicomponent pollutants in flue gas | |
| CN205164488U (en) | Mixed flue gas wet flue gas desulfurization device of fire coal - catalysis | |
| CN205073877U (en) | Semidry method flue gas desulphurization device of single venturi structure | |
| CN105107366B (en) | A kind of concurrent spray semi-dry fume desulfuration method | |
| CN217220890U (en) | Domestic waste burns flue gas denitration deacidification dust removal integration system of optimization | |
| CN102266718A (en) | Semi dry process flue gas desulfurization method of circulating fluidized bed based on circulation, and apparatus thereof | |
| CN201085994Y (en) | Circulation fluidized bed smoke desulphurizing device | |
| CN104941435A (en) | Normal temperature semi-dry method circulating fluidized bed flue gas desulphurization system and method | |
| CN107252624A (en) | The semi-dry desulphurization system and technique of a kind of utilization flyash | |
| CN101288825B (en) | Semi-dry type fume cleaning method and device | |
| CN201168568Y (en) | Water-lime powder combined spray gun | |
| CN206295800U (en) | A kind of semi-dry flue gas desulfurization device | |
| CN202438257U (en) | Gas-solid circulating flue gas absorption desulfuration and dust removal device | |
| CN208244435U (en) | Classification humidification flue gas desulfurization device based on spraying-fluidized bed reactor | |
| CN102671535A (en) | Integrated purifying technology and device for desulfurating and dedusting smoke of semi-dry type circulating fluidized bed | |
| CN103566751A (en) | Fluidized bed boiler desulfurization method and device | |
| CN101450791A (en) | Calcium hydrate preparation method for dry flue gas desulfurization and apparatus thereof | |
| CN101721907B (en) | Flue gas desulfurizing method for W-shaped multi-fluid alkaline spray generator | |
| CN201930709U (en) | Novel semi-dry process flue gas desulfurization device | |
| CN210964601U (en) | Sodium-based flue gas desulfurization byproduct treatment device | |
| CN206577576U (en) | In a kind of flue gas multicomponent pollutant cooperation-removal become zero-emission drop haze cleaning equipment | |
| CN209612600U (en) | A kind of power plant boiler smoke discharging device | |
| CN201363715Y (en) | Smoke purifying boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20111221 Termination date: 20150914 |
|
| EXPY | Termination of patent right or utility model |