CN202860367U - Air distribution device of activated coke flue gas adsorption tower - Google Patents
Air distribution device of activated coke flue gas adsorption tower Download PDFInfo
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- CN202860367U CN202860367U CN2012205440517U CN201220544051U CN202860367U CN 202860367 U CN202860367 U CN 202860367U CN 2012205440517 U CN2012205440517 U CN 2012205440517U CN 201220544051 U CN201220544051 U CN 201220544051U CN 202860367 U CN202860367 U CN 202860367U
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- activated coke
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Abstract
The utility model discloses an air distribution device of an activated coke flue gas adsorption tower, which comprises a plurality of columns of activated coke adsorption layers, wherein the upper end and the lower end of each column of activated coke adsorption layers are respectively communicated with a feed silo and a discharge silo, the lower end of each column of activated coke adsorption layers is provided with an unloader, a windward end face air distribution plate is arranged at the first column of activated coke adsorption layers, namely, the outer side of the activated coke adsorption layer at the windward end face; each column of activated coke adsorption layers is provided with an air distribution plate, which uses an open porosity with the large upper part and small lower part on a vertical section. The activated coke of the utility model is separated by the air distribution plate into a plurality of columns; saturated coke and unsaturated activated coke use different movement speeds, so that the output and the circulation volume of the activated coke are small; by the optimization of airflow through the air distribution plate and a movement mode of flue gas in combination with activated coke in a cross flow state and a convection state, the air distribution in a purifying device is matched with the adsorption ability of the activated coke, the system purification efficiency is high, and the flue gas resistance is small.
Description
Technical field
The utility model relates to activated coke dry method flue gas pollutant purification treatment facility, is specifically related to a kind of airflow distribution device of activated coke flue gas adsorption tower.
Background technology
Flue Gas Purification Technology Using Activated Coke can be to the multiple pollutant SO in the flue gas
2, SO
3, NOx, HCl, HF, dust, heavy metal, bioxin etc. remove simultaneously, and removal efficiency is high, can satisfy very strict environmental protection standard; And be the dry method flue gas purification techniques, water consumption only is equivalent to 1/10 of wet desulphurization; There are not the problems such as the chimney anticorrosion, " gypsum rain " of wet process of FGD, clean flue gas drop carry; Sulphur resource in all right recovered flue gas, the accessory substance resourcebility utilizes.Therefore, the Flue Gas Purification Technology Using Activated Coke performance indications are advanced, will obtain wide popularization and application in China.
The pattern of activated coke smoke eliminator generally is divided into two kinds of cross-current type and convection types:
Cross-current type refers to that flue gas enters smoke eliminator from the side, passes from left to right the activated coke bed, and activated coke is slowly mobile from top to bottom in moving bed, and flue gas and activated coke are the misorientation type of flow.The cross-current type smoke eliminator is simple in structure, and equipment takes up an area little, and SR is little.But the cross-current type smoke eliminator is owing to from the side air inlet, and the activated coke of air inlet side reaches capacity at first, if the simultaneously discharging from the bottom, then the activated coke unsaturation of bed rear side namely is discharged from, and has strengthened discharge rate and the internal circulating load of activated coke.And in the cross-current type smoke eliminator, the activated coke of upper end is fresh activated coke, and the activated coke of lower end is that approaching absorption is saturated, if flue gas is not optimized gas distribution, causes the pollutant removing efficient of lower end lower, affects whole purification efficiency.
Convection type refers to that flue gas enters smoke eliminator from the bottom surface, passes from the bottom up the activated coke bed, and activated coke is mobile from top to down in moving bed, and flue gas and activated coke are the reverse flow mode.The convection type smoke eliminator can overcome the unsaturated problem of activated coke part that cross-current type is discharged, and does not also have some position purification efficiency of air inlet cross section problem on the low side.But convection type smoke eliminator complex structure, activated coke discharging opening and smoke air inlet all are arranged on the purifier bottom, activated coke charging aperture and flue gas gas outlet all are arranged on the purifier top, and there are a lot of activated coke elephant trunks, the device fabrication processing difficulties, the risk that device breaks down is high, and the equipment occupation of land is larger, and SR is higher.
At present, in the activated coke smoke eliminator of using abroad, take the cross-flow pattern as main, but the above problem that cross-current type exists is not effectively solved.
The utility model content
The purpose of this utility model is to provide a kind of discharge rate of activated coke and internal circulating load little, flue gas is the move mode that cross-flow combines with convection current with activated coke, so that the air-flow in the purifier distributes and the adsorption capacity of activated coke is complementary, system purification efficient is high, and the airflow distribution device of the little activated coke flue gas adsorption tower of flue gas resistance.
For achieving the above object, the technical solution adopted in the utility model is: comprise the some row activated coke adsorption layers that are installed between air-inlet grille and the air outlet grate, on described each row activated coke adsorption layer, the lower end respectively with the charging warehouse, discharging bin is connected, lower end at each row activated coke adsorption layer is equipped with discharger, namely outside the activated coke adsorption layer of end face down with the wind end face airflow-distribution board is installed down with the wind at first row activated coke adsorption layer, the end face airflow-distribution board that facings the wind only be arranged in the first row activated coke adsorption layer outside from bottom to 1/4 ~ 1/3 At The Height, between every row activated coke adsorption layer the middle air flow distribution grid is installed all, the middle air flow distribution grid adopts top large at vertical section, the percent opening that the bottom is little.
The percent opening P of the described end face airflow-distribution board that facings the wind
0Be 50 ~ 60%.
Described middle air flow distribution grid is arranged on the whole section on bottom to top, the percent opening P on top
1Be 50 ~ 60%, the percent opening P at middle part
2Be 40 ~ 50%, the percent opening P of bottom
3Be 30 ~ 40%.
Perforate on described facing the wind end face airflow-distribution board and the middle air flow distribution grid is circular hole, and Circularhole diameter is 20 ~ 50mm.
Perforate on described facing the wind end face airflow-distribution board and the middle air flow distribution grid is rectangular opening, and rectangular opening is 35 ~ 60mm along the horizontal length of side, is 10 ~ 35mm along the vertical length of side.
Perforate on described facing the wind end face airflow-distribution board and the middle air flow distribution grid is slotted eye, and slotted eye is 35 ~ 60mm along horizontal axial length, is 10 ~ 35mm along vertical axial length.
Activated coke of the present utility model is separated by airflow-distribution board and is multiple row, and saturated and unsaturated activated coke adopts different translational speeds, so that the discharge rate of activated coke and internal circulating load are little; By the optimization function of airflow-distribution board to air-flow, flue gas is the move mode that cross-flow combines with convection current with activated coke, so that the air-flow in the purifier distributes and the adsorption capacity of activated coke is complementary, system purification efficient is high, and flue gas resistance is less.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the percent opening schematic diagram of the end face airflow-distribution board 5 that facings the wind;
Fig. 3 is the percent opening schematic diagram of middle air flow distribution grid 10.
Among the figure: 1 is the charging warehouse; 2 is inlet plenum; 3 is air-inlet grille; 4 is the activated coke adsorption layer; 5 are the end face airflow-distribution board that facings the wind; 6 is discharger; 7 is discharging bin; 8 is discharge chamber; 9 is air outlet grate; 10 is the middle air flow distribution grid.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to Fig. 1, the utility model comprises the some row activated coke adsorption layers 4 that are installed between air-inlet grille 3 and the air outlet grate 9, on described each row activated coke adsorption layer 4, the lower end respectively with charging warehouse 1, discharging bin 7 is connected, lower end at each row activated coke adsorption layer 4 is equipped with discharger 6, namely outside the activated coke adsorption layer of end face down with the wind end face airflow-distribution board 5 is installed down with the wind at first row activated coke adsorption layer, the end face airflow-distribution board 5 that facings the wind only be arranged in the first row activated coke adsorption layer outside from bottom to 1/4 ~ 1/3 At The Height, referring to Fig. 2, the percent opening P of the end face airflow-distribution board that facings the wind
0Be 50 ~ 60%, between every row activated coke adsorption layer middle air flow distribution grid 10 is installed all, middle air flow distribution grid 10 adopts the percent opening that top is large, the bottom is little at vertical section, referring to Fig. 3, middle air flow distribution grid 10 is arranged on the whole section on bottom to top, the percent opening P on top
1Be 50 ~ 60%, the percent opening P at middle part
2Be 40 ~ 50%, the percent opening P of bottom
3Be 30 ~ 40%.
Perforate on facing the wind end face airflow-distribution board 5 and the middle air flow distribution grid 10 of the present utility model is circular hole, and Circularhole diameter is 20 ~ 50mm.
Perforate on end face airflow-distribution board 5 and the middle air flow distribution grid 10 is rectangular opening down with the wind, and rectangular opening is 35 ~ 60mm along the horizontal length of side, is 10 ~ 35mm along the vertical length of side.
Perforate on end face airflow-distribution board 5 and the middle air flow distribution grid 10 is slotted eye down with the wind, and slotted eye is 35 ~ 60mm along horizontal axial length, is 10 ~ 35mm along vertical axial length.
Be applied to the activated coke smoke eliminator of certain coal-burning power plant, its agent structure activated coke adsorption layer 4 is divided into multiple row, be 3 row in the present embodiment, be respectively arranged with air-inlet grille 3 and air outlet grate 9 at inlet plenum 2 and the discharge chamber 8 of activated coke adsorption layer, adopt the venetian blind type distribution device.Be respectively arranged with facing the wind end face airflow-distribution board 5 and middle air flow distribution grid 10 facining the wind of activated coke adsorption layer 4 between end face and every layer of activated coke, middle air flow distribution grid 10 is large on vertical section employing top, the less percent opening in bottom.
In the present embodiment, the end face airflow-distribution board 5 that facings the wind only is arranged in from bottom to 1/3 At The Height, the percent opening P of the end face airflow-distribution board that facings the wind
0Be 55%.
In the present embodiment, the middle air flow distribution grid 10 of activated coke layer is arranged on the whole section on bottom to top, the percent opening P on top
1Larger, be 55%, the percent opening P at middle part
2Be 45%, the percent opening P of bottom
3Less, be 35%.
In the present embodiment, the perforate on facing the wind end face airflow-distribution board 5 and the middle air flow distribution grid 10 is circular hole, and Circularhole diameter is 35mm.
In the present embodiment, flue gas at first enters into inlet plenum 2, then by air-inlet grille 3, enters into activated coke adsorption layer 4, and the flue gas after the purification enters into discharge chamber 8 and discharges by air outlet grate 9.In the present embodiment, flue gas is by the gas distribution effect of facing the wind end face airflow-distribution board 5 and middle air flow distribution grid 10, the flue gas of bottom not only is horizontally through the activated coke adsorption layer, and because the effect of airflow-distribution board, also have the oblique top of partial fume and pass the activated coke adsorption layer, flue gas is the move mode that cross-flow combines with convection current with activated coke, the fresh activated coke in more flue gas and top is contacted, and with the bottom near the saturated Gas phase Smoke that contacts to less, the adsorption capacity that air-flow distributes with activated coke is complementary.
In the present embodiment, fresh activated coke is stored in the charging warehouse 1, and charging warehouse 1 communicates with activated coke adsorption layer 4, and it is 3 row that activated coke adsorption layer 4 is separated by 2 middle air flow distribution grids 10, activated coke is discharged by the discharger 6 of each row bottom, enters into discharging bin 7.In the present embodiment, each row activated coke is according to the difference of the concentration of adsorption fouling species, and saturated and unsaturated activated coke adopts different translational speeds, and the saturation factor of the activated coke of discharge reaches more than 95%, and discharge rate and the internal circulating load of activated coke are less.
In the present embodiment, flue gas is less by the resistance of activated coke layer, and three row activated coke layer thicknesses altogether 2m, flue gas are 0.28m/s by the void tower flow velocity of activated coke layer, and flue gas is about 2100Pa by the resistance of activated coke layer.
In the present embodiment, the removal efficiency of pollutant is high, wherein major pollutants SO
2Removal efficiency reach 97%, SO
3, HCl, HF removal efficiency reach more than 98%.
Its beneficial effect of the utility model is mainly reflected in following four aspects:
One, airflow-distribution board is large on vertical section employing top, the less percent opening in bottom, so that the fresh activated coke in more flue gas and top contacts, and approach the saturated Gas phase Smoke that contacts of absorption to less with the bottom, and flue gas is the move mode that cross-flow combines with convection current with activated coke, air-flow distributes and the adsorption capacity of activated coke is complementary, and has improved the pollutant removing efficient of system.
Its two, the end face airflow-distribution board that facings the wind only is arranged in the bottom and adopts larger percent opening, has both optimized the air-flow distribution, is unlikely again SR too large.
They are three years old, the middle air flow distribution grid of activated coke layer is arranged on the whole section, and adopts 30 ~ 60% percent openings that progressively increase from bottom to top, has both utilized airflow-distribution board that the activated coke layer is divided into multiple row and has controlled respectively translational speed, optimization airflow distributes again, has also guaranteed the intensity of airflow-distribution board.
They are four years old, circle, rectangle or oval-shaped hole are adopted in perforate on end face airflow-distribution board and the middle air flow distribution grid down with the wind, and design suitable hole dimension, and do not require that hole dimension is less than the activated coke particle diameter, both reduced crossfire between each layer activated coke as far as possible, also be convenient to the processing of airflow-distribution board, also reduced SR.
Claims (6)
1. the airflow distribution device of activated coke flue gas adsorption tower, it is characterized in that: comprise the some row activated coke adsorption layers (4) that are installed between air-inlet grille (3) and the air outlet grate (9), on described each row activated coke adsorption layer (4), the lower end respectively with charging warehouse (1), discharging bin (7) is connected, in the lower end of each row activated coke adsorption layer (4) discharger (6) is installed, namely outside the activated coke adsorption layer of end face down with the wind end face airflow-distribution board (5) is installed down with the wind at first row activated coke adsorption layer, the end face airflow-distribution board that facings the wind only be arranged in the first row activated coke adsorption layer outside from bottom to 1/4 ~ 1/3 At The Height, between every row activated coke adsorption layer middle air flow distribution grid (10) is installed all, middle air flow distribution grid (10) adopts top large at vertical section, the percent opening that the bottom is little.
2. the airflow distribution device of activated coke flue gas adsorption tower according to claim 1 is characterized in that: the percent opening P of the described end face airflow-distribution board that facings the wind
0Be 50 ~ 60%.
3. the airflow distribution device of activated coke flue gas adsorption tower according to claim 1, it is characterized in that: described middle air flow distribution grid (10) is arranged on the whole section on bottom to top, the percent opening P on top
1Be 50 ~ 60%, the percent opening P at middle part
2Be 40 ~ 50%, the percent opening P of bottom
3Be 30 ~ 40%.
4. according to claim 1, the airflow distribution device of 2 or 3 described activated coke flue gas adsorption towers, it is characterized in that: the perforate on described facing the wind end face airflow-distribution board (5) and the middle air flow distribution grid (10) is circular hole, and Circularhole diameter is 20 ~ 50mm.
5. according to claim 1, the airflow distribution device of 2 or 3 described activated coke flue gas adsorption towers, it is characterized in that: the perforate on described facing the wind end face airflow-distribution board (5) and the middle air flow distribution grid (10) is rectangular opening, rectangular opening is 35 ~ 60mm along the horizontal length of side, is 10 ~ 35mm along the vertical length of side.
6. according to claim 1, the airflow distribution device of 2 or 3 described activated coke flue gas adsorption towers, it is characterized in that: the perforate on described facing the wind end face airflow-distribution board (5) and the middle air flow distribution grid (10) is slotted eye, slotted eye is 35 ~ 60mm along horizontal axial length, is 10 ~ 35mm along vertical axial length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205440517U CN202860367U (en) | 2012-10-23 | 2012-10-23 | Air distribution device of activated coke flue gas adsorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205440517U CN202860367U (en) | 2012-10-23 | 2012-10-23 | Air distribution device of activated coke flue gas adsorption tower |
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| Publication Number | Publication Date |
|---|---|
| CN202860367U true CN202860367U (en) | 2013-04-10 |
Family
ID=48027127
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205440517U Withdrawn - After Issue CN202860367U (en) | 2012-10-23 | 2012-10-23 | Air distribution device of activated coke flue gas adsorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202860367U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102908867A (en) * | 2012-10-23 | 2013-02-06 | 西安热工研究院有限公司 | Active coke smoke purifying device for optimizing air-flow distribution |
| CN104226077A (en) * | 2014-09-30 | 2014-12-24 | 中冶长天国际工程有限责任公司 | Tower body modular units, adsorption tower body and adsorption tower |
| CN104258685A (en) * | 2014-09-30 | 2015-01-07 | 中冶长天国际工程有限责任公司 | Tower body module unit and adsorption tower |
-
2012
- 2012-10-23 CN CN2012205440517U patent/CN202860367U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102908867A (en) * | 2012-10-23 | 2013-02-06 | 西安热工研究院有限公司 | Active coke smoke purifying device for optimizing air-flow distribution |
| CN102908867B (en) * | 2012-10-23 | 2014-08-13 | 西安热工研究院有限公司 | Active coke smoke purifying device for optimizing air-flow distribution |
| CN104226077A (en) * | 2014-09-30 | 2014-12-24 | 中冶长天国际工程有限责任公司 | Tower body modular units, adsorption tower body and adsorption tower |
| CN104258685A (en) * | 2014-09-30 | 2015-01-07 | 中冶长天国际工程有限责任公司 | Tower body module unit and adsorption tower |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20140813 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20140813 |
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| RGAV | Abandon patent right to avoid regrant |