CN201242150Y - Load-adjustable circulating fluid bed desulfurizing tower - Google Patents

Load-adjustable circulating fluid bed desulfurizing tower Download PDF

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Publication number
CN201242150Y
CN201242150Y CNU2008200403977U CN200820040397U CN201242150Y CN 201242150 Y CN201242150 Y CN 201242150Y CN U2008200403977 U CNU2008200403977 U CN U2008200403977U CN 200820040397 U CN200820040397 U CN 200820040397U CN 201242150 Y CN201242150 Y CN 201242150Y
Authority
CN
China
Prior art keywords
tower
fluidized bed
flue gas
circulating fluidized
desulfurization
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
Application number
CNU2008200403977U
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Chinese (zh)
Inventor
黄震
刘卫民
邵亚锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Longjiu Environmental Engineering Co., Ltd.
Original Assignee
NANJING LONGJIU ENVIRONMENTAL ENGINEERING Co Ltd
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Filing date
Publication date
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Priority to CNU2008200403977U priority Critical patent/CN201242150Y/en
Application granted granted Critical
Publication of CN201242150Y publication Critical patent/CN201242150Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a flue gas desulfurization device, in particular to a circulating fluidized bed desulfurization tower whose load can be adjusted. The circulating fluidized bed desulfurization tower comprises an air inlet flue, a throat pipe which is connected with the air inlet flue, and a tower body which is connected with the throat pipe and is located on the upper portion of the throat pipe, wherein at least one bypass pipeline is connected between the air inlet flue and the tower body on the upper portion of the throat pipe. An outlet of the bypass pipeline can enter the tower body tangentially. Since the bypass pipeline is added, the opening of the bypass pipeline can be adjusted, and the circulating fluidized bed desulfurization tower can guarantee that the hollow tower operation pressure loss can be always stabilized in 500 to 600Pa under different operation loads. The investment is smaller than a purifying flue gas reflux method since the tower does not use a reflux pipeline, flue gas does not need refluxing for long distance through the method, and the energy consumption is small. The flue gas which passes through the bypass pipeline enters the tower tangentially, flow fields in a reaction tower can be stabilized, the retention time of desulfurizing agent can be prolonged, and thereby the desulfurization is more effective.

Description

The adjustable circulating fluidized bed desulfurization tower of loading
Technical field
The utility model relates to a kind of flue gas desulfur device, a kind of specifically adjustable circulating fluidized bed desulfurization tower of loading.
Background technology
Owing to contain pernicious gases such as sulfur dioxide, nitrogen oxide in the flue gas that produces when fire coal, fuel oil, fuel gas buring, these pernicious gases enter atmosphere, easily cause acid rain, destroy ecological environment, influence the healthy of people, the relevant environmental regulation of China has proposed strict control criterion requirement to the permission concentration of emission of sulfur dioxide in flue gas, nitrogen oxide.
The pollution that caused by coal burning control method has multiple, is divided three classes usually, i.e. and desulfurization and burning back desulfurization (flue gas desulfurization) in desulfurization before the burning, the burning, wherein desulfurization is considered to control SO after the smoke combustion 2Pollute effective way.The flue gas desulfurization technique that has been applied at present and has continued to develop mainly contains four kinds: and humidification water activation method (LIFAC method) and recirculating fluidized bed flue gas purifying technique behind wet type limestone/gypsum absorption process, dry spraying dry decontamination technology, the in-furnace calcium spraying (CFB-FGD).
(CFB-FGD) will add the Ca (OH) of reaction tower to the recirculating fluidized bed flue gas purifying technique 2SO in powder and the flue gas 2And other compositions such as SO in the flue gas 3, sour gas such as HCl, HF fully contact mixing, the atomized water that the reaction tower porch sprays into reduces flue-gas temperature on the one hand, guarantees optimum reaction condition, on the other hand at Ca (OH) 2The surface of particle forms liquid phase, makes in the reaction tower that the soda acid amphiprotic substance mixes, and reaction can be fully, carry out fast.In the recirculating fluidized bed reaction tower, Ca (OH) 2Powder, flue gas and the moisture that sprays into fully mix under fluidized state, and by Ca (OH) 2The repeatedly recirculation of powder, the Ca (OH) that makes the interior participation reaction of bed 2Amount is far longer than the Ca (OH) that newly adds 2Amount, promptly the Ca/S of real reaction ratio is far longer than apparent Ca/S ratio, thereby makes SO 2, SO 3Absorbed more fully Deng the sour gas physical efficiency, realized the efficient utilization of high-efficiency desulfurization and desulfurizing agent.
But there is following problem in existing recirculating fluidized bed reaction tower: the reaction tower that designs at full capacity by boiler is when bigger exhaust gas volumn load variations, and crushing changes greatly in the reaction tower, influences desulphurization system and normally moves, and influences desulfurized effect.Because during the design reaction tower, the pressure loss in the time of should guaranteeing void tower operation at full capacity in the tower is 500~600Pa, but when flue gas flow in the tower becomes underload by full load, flow velocity diminishes in the tower, the pressure loss reduces, and when being low to moderate 300Pa when following, the anti-material ash that is come by deduster no longer is in fluidized state, thereby cause desulfurizing agent fully not contact with flue gas, desulfurized effect reduces.
To during the period inscribing following two kinds of solutions are arranged at present: during (1) design, for guaranteeing that reaction tower is in minimum load operation, dwindle reaction tower trunnion portion diameter, when making underrun, reaction tower void tower crushing reaches 500~600Pa, when the reaction tower oepration at full load, reaction tower void tower crushing can reach more than the 1000Pa like this; (2) cleaning flue gases circumfluence method was established pipeline and is connected to the reaction tower import before chimney, mounted valve on the pipeline, and during the reaction tower oepration at full load, valve-off; During underrun, open valve, with cleaning flue gases with enter reaction tower after pending flue gas mixes, guarantee like this in the tower that flue gas load is at full capacity.All there is shortcoming separately in these two kinds of solutions: first kind of scheme is because the reaction tower internal pressure loss is bigger, and power consumption is big; Second kind of formula investing is bigger, and cleaning flue gases carries power consumption big.This shows there is not a kind of circulating fluidized bed desulfurization tower that can guarantee that desulfuration efficiency can be saved energy and reduce the cost again in the prior art.
Summary of the invention
Technical problem to be solved by this invention is: at above the deficiencies in the prior art, propose a kind of adjustable circulating fluidized bed desulfurization tower of loading, it can guarantee desulfuration efficiency, can play energy-saving and cost-reducing effect again, and invests less.
The technical scheme that the utility model solves the problems of the technologies described above is: a kind of adjustable circulating fluidized bed desulfurization tower of loading, trunnion that comprise the air inlet flue, links to each other with the air inlet flue and the tower body that is positioned at trunnion top that links to each other with trunnion are connected at least one bypass duct between the tower body on air inlet flue and trunnion top.The outlet of bypass duct tangentially enters in the described tower body.When adopting the technical program, desulfurizing tower is pressed the minimum load design.
Be understood that, after the employing technique scheme, when the circulating fluidized bed desulfurization tower higher load is moved, partial fume directly can be crossed the trunnion position by bypass duct and enter tower body.When the circulating fluidized bed desulfurization tower oepration at full load, a plurality of bypass ducts all can be opened; During underrun, can be with the bypass duct Close All; During the shoulder load operation, press the bypass duct number that flow is determined unlatching, thereby reach the reduction pressure loss, guarantee desulfurized effect energy saving purposes again.
The utility model has the advantages that: (1) owing to increased bypass duct, and bypass duct opens adjustablely, can guarantee under the different operating loads that the void tower operating pressure loses all-the-time stable at 500~600Pa; (2) because the flue that need not reflux is littler than the investment of cleaning flue gases circumfluence method, and this method flue gas need not pass through long-distance transportation, and it is little to consume energy; (3) tangentially enter in the tower through the flue gas of bypass duct, can the stopping reaction flow field in tower, prolong the desulfurizing agent time of staying, thus high-efficiency desulfurization more; (4) resistance can increase the range of operation of desulfurizing tower according to the different load adjustment, has improved the adaptability of circulating fluidized bed dry sulfur removal technology to load.
Description of drawings
Fig. 1 is a planar structure schematic diagram of the present utility model.
Fig. 2 is an elevation of the present utility model.
Fig. 3 is another elevation of the present utility model.
The specific embodiment
Embodiment one
The planar structure of present embodiment as shown in Figure 1, Fig. 2 is an one elevation, Fig. 3 is its another elevation.The circulating fluidized bed desulfurization tower of the load regulated of present embodiment, the trunnion 2 that comprise air inlet flue 1, links to each other and that link to each other with trunnion 2 and be positioned at the tower body 3 on trunnion 2 tops with air inlet flue 1, be connected to four bypass ducts 4 between the tower body 3 on air inlet flue 1 and trunnion 2 tops, the outlet of four bypass ducts 4 tangentially enters tower body 3, i.e. outlet of bypass duct 4 and 3 tangent connections of tower body.Flue gas through bypass duct 4 tangentially enters in the tower body 3, and energy stopping reaction flow field in tower prolongs the desulfurizing agent time of staying, more high-efficiency desulfurization.
The utility model is when concrete the use, when the circulating fluidized bed desulfurization tower oepration at full load, four bypass ducts 4 all can be opened, partial fume directly be crossed trunnion 2 positions by bypass duct 4 enter tower body 3, make void tower operating pressure loss all-the-time stable at 500~600Pa.When the circulating fluidized bed desulfurization tower underrun, can make void tower operating pressure loss all-the-time stable at 500~600Pa bypass duct 4 Close Alls.When the circulating fluidized bed desulfurization tower shoulder load moves, press the number of the bypass duct 4 that flow determine to open, can open one, two or three, make void tower operating pressure loss all-the-time stable at 500~600Pa.
The utility model can also have other embodiment, can be provided with on demand as the radical of bypass duct, and all employings are equal replaces or technical scheme that equivalent transformation forms, all drops within the protection domain of the utility model requirement.

Claims (3)

1. can regulate the circulating fluidized bed desulfurization tower of load, trunnion that comprise the air inlet flue, links to each other with the air inlet flue and link to each other with trunnion and tower body that be positioned at trunnion top is characterized in that: be connected at least one bypass duct between the described tower body on described air inlet flue and described trunnion top.
2. the circulating fluidized bed desulfurization tower of regulating load as claimed in claim 1 is characterized in that: the outlet of described bypass duct tangentially enters in the described tower body.
3. the circulating fluidized bed desulfurization tower of regulating load as claimed in claim 1 or 2 is characterized in that: described bypass duct is provided with four.
CNU2008200403977U 2008-07-23 2008-07-23 Load-adjustable circulating fluid bed desulfurizing tower Expired - Fee Related CN201242150Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200403977U CN201242150Y (en) 2008-07-23 2008-07-23 Load-adjustable circulating fluid bed desulfurizing tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200403977U CN201242150Y (en) 2008-07-23 2008-07-23 Load-adjustable circulating fluid bed desulfurizing tower

Publications (1)

Publication Number Publication Date
CN201242150Y true CN201242150Y (en) 2009-05-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102743973A (en) * 2012-07-16 2012-10-24 南京龙玖环境工程有限公司 Low-energy load-adjustable circulating fluidized bed desulfurization tower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102743973A (en) * 2012-07-16 2012-10-24 南京龙玖环境工程有限公司 Low-energy load-adjustable circulating fluidized bed desulfurization tower

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C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: HUANG ZHEN

Free format text: FORMER OWNER: NANJING LONGJIU ENVIRONMENTAL ENGINEERING CO.,LTD

Effective date: 20090710

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20090710

Address after: Room 502, building 3, blue capital, No. 2, Hanzhoung gate, Jiangsu, Nanjing Province, 210029

Co-patentee after: Liu Weimin

Patentee after: Yellow earthquake

Co-patentee after: Shao Yafeng

Address before: Room 502, building 3, blue capital, No. 2, Hanzhoung gate, Jiangsu, Nanjing Province, 210029

Patentee before: Nanjing Longjiu Environmental Engineering Co., Ltd.

ASS Succession or assignment of patent right

Owner name: NANJING LONGJIU ENVIRONMENTAL ENGINEERING CO.,LTD

Free format text: FORMER OWNER: HUANG ZHEN

Effective date: 20090918

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20090918

Address after: Room 502, building 3, blue capital, No. 2, Hanzhoung gate, Jiangsu, Nanjing Province, 210029

Patentee after: Nanjing Longjiu Environmental Engineering Co., Ltd.

Address before: Room 502, building 3, blue capital, No. 2, Hanzhoung gate, Jiangsu, Nanjing Province, 210029

Co-patentee before: Liu Weimin

Patentee before: Yellow earthquake

Co-patentee before: Shao Yafeng

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090520

Termination date: 20110723