CN202199265U - Scale-preventing device for deacidifying tower of circulating fluidized bed - Google Patents
Scale-preventing device for deacidifying tower of circulating fluidized bed Download PDFInfo
- Publication number
- CN202199265U CN202199265U CN2011202204240U CN201120220424U CN202199265U CN 202199265 U CN202199265 U CN 202199265U CN 2011202204240 U CN2011202204240 U CN 2011202204240U CN 201120220424 U CN201120220424 U CN 201120220424U CN 202199265 U CN202199265 U CN 202199265U
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- CN
- China
- Prior art keywords
- tower
- fluidized bed
- recirculating fluidized
- extracting tower
- air curtain
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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.)
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Abstract
The utility model discloses a scale-preventing device for a deacidifying tower of a circulating fluidized bed, which is arranged between a flow mixer and a smoke outlet inside the deacidifying tower of the circulating fluidized bed, and consists of a separator (8), a tower wall, an air curtain inlet (10) and an ash outlet (11). The lower part of the separator and the tower wall are combined and protrude upward to form a semi-enclosed air chamber (9). A gap is reserved between the upper part of the separator and the tower wall to form an air curtain outlet. The tower wall enclosed by the separator is provided with the air curtain inlet and the ash outlet up and down. The scale-preventing device for the deacidifying tower of the circulating fluidized bed provided by the utility model can effectively prevent the tower wall from scaling, reduce the maintenance time of the deacidifying tower and prolong the service life of the deacidifying tower.
Description
Technical field
The utility model relates to a kind of scale prevention device, particularly a kind of recirculating fluidized bed extracting tower scale prevention device.
Background technology
The fume emission of incinerator is handled relevant regulations strictness day by day in recent years, takes to spray into the method for calcium hydroxide depickling bag type filtering for smoke treatment, with HCL, and SO
XBe controlled at below the stipulated standard etc. harmful substance.In order to improve recirculating fluidized bed extracting tower deacidification efficiency; Prevent the wall fouling of wetting of tower wall; Reduce maintenance time, existing method is: improve circulating fluid bed type extracting tower interior reaction temperature, so that the water droplet that sprays into after atomizing in the extracting tower is not reached on the wall just by hot smoke evaporative 1.; 2. reduce the atomization angle of calcium hydroxide nozzle and mixed flow device nozzle.Adopt existing method to improve the extracting tower interior reaction temperature, though can prevent the fouling of tower wall, can cause the flue gas deacidification efficient of depickling to reduce, the reactant service efficiency is low; And the nozzle atomization angle diminishes and can cause flue gas when cooling inhomogeneous.
The utility model content
The utility model provides a kind of recirculating fluidized bed extracting tower scale prevention device, and it can effectively prevent the fouling of tower wall, improves the maintenance intervals cycle.
This recirculating fluidized bed extracting tower scale prevention device is arranged between the mixed flow device and outlet flue in the recirculating fluidized bed extracting tower; It is made up of baffle plate, Ta Bi, air curtain air inlet and ash hole; The baffle plate bottom engages with the tower wall and the semi-surrounding that raises up constitutes air chamber; Stay a slit to constitute the air curtain gas outlet between baffle plate top and the tower wall, be distributed with air curtain air inlet and ash hole from top to bottom on the tower wall of baffle plate enclosing region.Get into air chamber and form the air curtain of being close to the tower wall through the air curtain gas outlet at a high speed by the air curtain air inlet through the gas after recirculating fluidized bed extracting tower and the sack cleaner filtration; This air curtain has intercepted contacting of water droplet and tower wall after calcium hydroxide, the atomizing; Thereby prevent the problem of tower wall calcium hydroxide bonding fouling effectively; Reduce the extracting tower fault power time, prolong extracting tower service life.
Description of drawings
Fig. 1 is a recirculating fluidized bed extracting tower profile;
Fig. 2 is a recirculating fluidized bed extracting tower scale prevention device profile.
The specific embodiment
Combine the accompanying drawing and the specific embodiment that the technical scheme of this utility model is carried out detailed explanation at present.
Like Fig. 1, shown in Figure 2, the recirculating fluidized bed extracting tower mainly by tower body 1 and the advance mouth 2, ash output valve 3, calcium hydroxide outlet 4, mixed flow device 5, recirculating fluidized bed extracting tower scale prevention device 6, outlet flue 7 that distribute from bottom to top constitute.Wherein recirculating fluidized bed extracting tower scale prevention device is on the recirculating fluidized bed extracting tower at its place between mixed flow device 5 and the outlet flue 7, and it is made up of baffle plate 8, Ta Bi, air curtain air inlet 10 and ash hole 11.The baffle plate bottom engages with the tower wall and the semi-surrounding that raises up constitutes air chamber 9, is distributed with air curtain air inlet and ash hole from top to bottom on the tower wall of baffle plate enclosing region.Stay a slit to constitute the air curtain gas outlet between baffle plate top and the tower wall.
Above-mentioned air curtain gas outlet width is 4～6mm, helps gas most and sprays the formation air curtain at a high speed.
Recirculating fluidized bed extracting tower scale prevention device is uniformly distributed on the depickling Tata wall circumference, to form the air curtain around the extracting tower tower body, more effectively prevents the fouling of tower wall.
Recirculating fluidized bed extracting tower scale prevention device is arranged in the recirculating fluidized bed extracting tower on the mixed flow device square column type tower wall and taper Ta Bi junction for best, so that prevent the extracting tower wall area maximum of fouling.
Workflow: flue gas is from advancing mouth entering recirculating fluidized bed extracting tower and moving upward; Calcium hydroxide outlet ejection calcium hydroxide, mixed flow device ejection water and air, tower body is discharged by the outlet flue that is positioned at cat head in flue gas and calcium hydroxide, water and air reaction depickling and cooling back.To pass through recirculating fluidized bed extracting tower and sack cleaner filtered smoke gas are received recirculating fluidized bed extracting tower scale prevention device with air-introduced machine and high pressure positive blower air curtain air inlet; Gas is got in the air chamber of recirculating fluidized bed extracting tower scale prevention device; Stopped by baffle plate to move upward to spray the air curtain that forms applying tower wall at a high speed, can effectively prevent the fouling of tower wall through narrow air curtain gas outlet.Flue gas through air chamber is can be in air chamber residual to have cigarette ash, and the ash hole that is positioned under the air curtain air inlet can be used for regularly removing cigarette ash.To be drawn back sub-fraction to circulating fluid bed type extracting tower inner plenum by pocket type filter filtered smoke gas through high pressure positive blower; Because the extracting tower inner plenum is opened a circle slit along the circumferential direction; Flue gas in the air chamber receives the high pressure positive blower effect, sprays into extracting tower from the air chamber slit at a high speed, sprays in gas (partial fume after the purification) direction and the extracting tower not the flow of flue gas direction of purification in the same way; Thereby on the extracting tower inwall, evenly form one deck air curtain; Thereby the calcium hydroxide that is in fluidized state in the obstruct extracting tower contacts with the extracting tower inwall, because this air curtain structure not only can intercept calcium hydroxide and contact with the extracting tower inwall; The water droplet that also can intercept after being atomized simultaneously contacts with the extracting tower inwall, thereby prevents that effectively extracting tower from causing calcium hydroxide adhesion problem on the inside panel because of adhering to calcium hydroxide and water.Also have because adopt the partial fume after bag filter filters to be used as required air curtain gas; Can't cause too high problem of chimney breast flue gas oxygen content and air chamber slit to be had only about 5mm; So air chamber institute air demand is also few, also very little to the whole system influence, also reduce the high pressure positive blower energy consumption.
Claims (4)
1. recirculating fluidized bed extracting tower scale prevention device is characterized in that: this scale prevention device is arranged between the mixed flow device and outlet flue in the recirculating fluidized bed extracting tower, and it is made up of baffle plate, Ta Bi, air curtain air inlet and ash hole; The baffle plate bottom engages with the tower wall and the semi-surrounding that raises up constitutes air chamber, stays a slit to constitute the air curtain gas outlet between baffle plate top and the tower wall, and air curtain air inlet and ash hole from top to bottom are distributed on the tower wall of baffle plate enclosing region.
2. recirculating fluidized bed extracting tower scale prevention device according to claim 1 is characterized in that: air curtain gas outlet width is 4～6mm.
3. recirculating fluidized bed extracting tower scale prevention device according to claim 1 is characterized in that: recirculating fluidized bed extracting tower scale prevention device is uniformly distributed on the tower wall circumference.
4. recirculating fluidized bed extracting tower scale prevention device according to claim 1 is characterized in that: recirculating fluidized bed extracting tower scale prevention device is arranged on square column type tower wall and taper Ta Bi junction on the interior mixed flow device of recirculating fluidized bed extracting tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202204240U CN202199265U (en) | 2011-06-24 | 2011-06-24 | Scale-preventing device for deacidifying tower of circulating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202204240U CN202199265U (en) | 2011-06-24 | 2011-06-24 | Scale-preventing device for deacidifying tower of circulating fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202199265U true CN202199265U (en) | 2012-04-25 |
Family
ID=45963403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202204240U Expired - Fee Related CN202199265U (en) | 2011-06-24 | 2011-06-24 | Scale-preventing device for deacidifying tower of circulating fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202199265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749044A (en) * | 2022-05-07 | 2022-07-15 | 中钢集团天澄环保科技股份有限公司 | Fast mixing device for spraying powder in splashing type flue |
-
2011
- 2011-06-24 CN CN2011202204240U patent/CN202199265U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749044A (en) * | 2022-05-07 | 2022-07-15 | 中钢集团天澄环保科技股份有限公司 | Fast mixing device for spraying powder in splashing type flue |
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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: 20120425 Termination date: 20180624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |