CN2385786Y - Energy-saving vortex bag type secondary dust collecting apparatus for smoke of cement shaft kiln - Google Patents
Energy-saving vortex bag type secondary dust collecting apparatus for smoke of cement shaft kiln Download PDFInfo
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- CN2385786Y CN2385786Y CN 99221695 CN99221695U CN2385786Y CN 2385786 Y CN2385786 Y CN 2385786Y CN 99221695 CN99221695 CN 99221695 CN 99221695 U CN99221695 U CN 99221695U CN 2385786 Y CN2385786 Y CN 2385786Y
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Abstract
The utility model relates to an energy-saving vortex bag type secondary dust collecting apparatus for the smoke of a vertical cement kiln, which is formed by that a vortex dust collecting apparatus with low resistance is assembled with a three chamber blowback air negative-pressure round bag type dust collecting apparatus which is provided with an upper inlet and a lower outlet and is additionally provided with a vortex cylinder, wherein, the vortex cylinder which is connected with a smoke outlet of the vortex dust collecting apparatus with low resistance is arranged at the lower end of the dust collecting apparatus. Compared with the existing glass fiber bag filter which is used for the smoke of the cement shaft kiln, the investment of the energy-saving vortex bag type secondary dust collecting apparatus is reduced by 55%-75%, and electricity is saved by 64%-78%. The load of a filter bag is small. The service life of the energy-saving vortex bag type secondary dust collecting apparatus can be increased by one time. The effect of dust collection is good, and smoke discharging concentration is not more than 100 mg/m<3>. The utility model has the advantages of small size, light weight, compact structure and short flow of the smoke. The problem that dust is difficult to discharge due to the phenomenon of condensation of moisture does not exist. The utility model is ideal dust removing equipment which is used for governing the smoke and the dust of the vertical cement kiln.
Description
The utility model relates to a kind of dust-precipitator that is used for flue gas of vertical cement kiln, particularly about a kind of energy-saving eddy flow pocket type secondary dust-precipitator that is used for flue gas of vertical cement kiln.
Adopt the cement of shaft kiln explained hereafter to account for 80% of total output in China, but because of its discharged flue gas (dust content 〉=10g/m
3) serious environment pollution, thereby can flue gas of shaft kiln qualified discharge be the key factor of domestic employing shaft kiln explained hereafter cement producer survival and development.
At present, domestic employing shaft kiln explained hereafter cement producer mainly adopts cleaners such as cottrell, water dust-precipitator, glass fibre bagroom to purify flue gas, to realize qualified discharge.It is big and because of there being conductive particle to make the interpolar electric insulation can not keep causing the electricity defectives such as inefficacy of gathering dust in the flue dust to adopt cottrell to have an investment; Also that water dust-precipitator passage is stopped up is serious etc. former thereby cause it normally not move because of the hydraulicity of shaft kiln dust to adopt the water dust-precipitator.At present, the producer of some shaft kiln explained hereafter cement adopts a kind of glass fibre bagroom (Fig. 1), it is a kind ofly to go out six Room blowback wind negative pressure rectangle bag filters under enterprising, the flue gas that shaft kiln produces enters filter bag from casing top, dust falls into the bottom ash bucket because of the iris action of filter bag in the flue gas, passing the filter bag flue gas after being purified is drawn by the cloth bag lower box, enter atmosphere through air-introduced machine, this bagroom efficiency of dust collection is higher, effect is better, and smoke dust discharge concentration can reach 60-150mg/m
3But still have the following disadvantages: 1, the flue gas of vertical cement kiln dust all enters bagroom, and the bagroom load of dust remove is big, causes the bagroom volume big, and investment is high, and unit flue dust dust removal installation investment reaches 12-20 unit/m
32, when reasons such as cement in vertical kiln system of Himdu logic fire calcining accidents, to making the flue gas greater than 300 ℃ enter bagroom and burn filter bag, life of bag filter is low, only is about 1 year; 3, because of the filter bag air-flow adopts upper intake lower outlet type, flue gas flow is long, and when flue gas arrived the bottom ash bucket, temperature can be reduced to below the dew point, causes moisture content dewfall in the flue gas, makes the moisture situation that causes the ash discharge difficulty of dust in the ash bucket; 4,, need to arrange that on the ground 20 meters high shaft kiln exhaust opening causes ground from distance ground during flue gas ash removal, has increased energy consumption, dedusting power consumption height (grog dedusting power consumption per ton reaches 7.12-11.68KWh) because of the bagroom volume is big.Thereby, explore a kind of small investment, the cleaner that is used for flue gas of vertical cement kiln that energy consumption is low is very important.
The purpose of this utility model be to overcome above-mentioned the deficiencies in the prior art part and a kind of small investment is provided, energy consumption is low, life of bag filter is high, dust collection effect the is good energy-saving eddy flow pocket type secondary dust-precipitator that is used for flue gas of vertical cement kiln.
The purpose of this utility model can realize by following measure;
(Fig. 2-Fig. 8) is a kind of energy-saving eddy flow pocket type secondary dust-precipitator that is used for flue gas of vertical cement kiln to the utility model, it is by the low resistance cyclonic device and go out the round bag filter of three Room blowback wind negative pressure on advancing down and combine, and its principal character is: the bottom that 1, goes out the three round bag filters of Room inverted ventilation negative pressure (12) on descending is provided with the whirl cylinder (32) that is connected with the exhanst gas outlet (20) of low resistance cyclonic dust-precipitator (18); 2, the upper end of the exhanst gas outlet (20) of low resistance cyclonic dust-precipitator (18) is provided with atmospheric valve (13), and its air inlet flue (14) directly is connected with the exhaust opening of cement in vertical kiln.
The purpose of this utility model can also realize by following measure:
Going out the three round bag filters of Room blowback wind negative pressure (18) on advancing under of the present utility model is made of eddy flow section of gathering dust (I) and fillter section (II).The eddy flow section of gathering dust (I) is made up of ash bucket (33), lock wind unloading valve (15), whirl cylinder (32) and air inlet duct (35), and the section of air inlet duct (35) is that rectangle is the tangential direction layout along the whirl cylinder cylindrical; Fillter section (II) is made up of casing (34), filter bag (29), lower face plate (30), top cover (28) and shared air channel (26), casing (34) is a cylinder, be separated into three Room by 120 degree in the tube, casing is provided with access door (27), (31), filter bag (29) is fixed between top cover (28) and the lower face plate (30) by erecting by overhang and fixture, the exhaust gas volumn size that filter bag quantity is handled by bag filter determines that top cover (28) is provided with three shared air channels, one of every chamber.
Because the utility model adopts eddy flow, cloth bag two-stage to gather dust, at first being removed in low resistance cyclonic dust-precipitator (18) than the coarse granule flue dust in the flue gas of vertical cement kiln falls in the ash bucket (24), the eddy flow section of gathering dust (II) that goes out the three round bag filters of Room blowback wind negative pressure (12) under the second level on advancing again then is removed and falls in the ash bucket (33), removes flue gas behind the coarse granule flue dust and enters filter bag (29) by the below of casing (34) again and remove the fine grained flue dust.Because gathering dust through the secondary eddy flow than coarse granule of 80-90% is removed in the flue gas, the fillter section (II) that goes out the three round bag filters of Room blowback wind negative pressure (12) on making down filters load to be reduced greatly, reduced the filter area of cloth bag, and then the casing volume of bag filter is reduced.Can reduce cost effectively, can be arranged in the utility model on the cement in vertical kiln fire door platform simultaneously yet, flue gas of shaft kiln does not have descending branch in dust removal process, save the energy effectively.Also, prolonged the service life of filter bag, reduced operating cost owing to the reduction of filter bag load of dust remove.Because the utility model is provided with the secondary rotational flow dust-removing, make particle is bigger in the flue gas of shaft kiln naked light particle through low resistance cyclonic dust-precipitator and the next stage eddy flow section of gathering dust the time, be removed and fall into ash bucket, overcome effectively that system of Himdu logic fire particle enters filter bag and the problem that burns out filter bag.
The utility model secondary dust-precipitator is arranged compact, the gas approach of first order low resistance cyclonic dust-precipitator directly and the shaft kiln exhaust opening join, and the exhanst gas outlet of low resistance cyclonic dust-precipitator is the gas approach of second level bag filter, bag filter adopts down upper outlet type again, therefore, flue gas flow is short, and temperature drop is low, the ash bin temperature is remained on more than the dew point, can avoid effectively making the moisture problem that causes the ash discharge difficulty of flue dust in the ash bucket because of dewfall.
The utility model has been cancelled former cement in vertical kiln chimney because the sky (13) that will leak informaton moves to the top of the exhanst gas outlet (22) of low resistance cyclonic dust-precipitator (18).
In sum: the utility model can overcome effectively that existing bagroom load is big, investment is high, drawbacks such as energy consumption is high, life of bag filter is short, ash discharge difficulty are the desirable cleaners of flue gas of vertical cement kiln qualified discharge.
The drawing of accompanying drawing of the present utility model is described as follows:
Fig. 1, a kind of glass fibre bagroom that is used for flue gas of vertical cement kiln.
Among the figure, 1-cement in vertical kiln, 2-glass fibre bagroom, 3-atmospheric valve, 4-air inlet flue, 5-sedimentation flue, 6-air-introduced machine, 7-citation damper, 8-back blowing machine, 9-blowback air-valve, 10-ash discharge spiral.
Fig. 2, a kind of energy-saving eddy flow pocket type secondary dust-precipitator system layout front view that is used for flue gas of vertical cement kiln of the utility model.
Among the figure, go out the round bag filter of three Room blowback wind negative pressure, 13-atmospheric valve, 14-air inlet flue, 15-lock wind unloading valve, 16-air-introduced machine, 17-back blowing machine, 18-low resistance cyclonic dust-precipitator on advancing under 11-cement in vertical kiln, the 12-.
Fig. 3, a kind of energy-saving eddy flow pocket type secondary dust-precipitator system layout vertical view that is used for flue gas of vertical cement kiln of the utility model.
Fig. 4, the utility model low resistance cyclonic dust-precipitator structure front view.
Among the figure: 19-shaft kiln exhaust opening, 20-flue gas access, 21-eddy flow road, 22-exhanst gas outlet, 23-whirl cylinder, 24-ash bucket, 25-cinder-discharging port.
Fig. 5, the utility model low resistance cyclonic dust-precipitator structure vertical view.
Go out the round bag filter structure of three Room blowback wind negative pressure front view on advancing under Fig. 6, the utility model.
Among the figure: the shared air channel of 26-, 27-access door, 28-top cover, 29-filter bag, 30-lower face plate, 31-access door, 32-whirl cylinder, 33-ash bucket, 34-casing, the I-eddy flow section of gathering dust, II-fillter section.
Go out the round bag filter structure of three Room blowback wind negative pressure vertical view on advancing under Fig. 7, the utility model.
Among the figure: 35-flue gas access.
Fig. 8 goes out the A-A profile of the round bag filter structure chart of three Room blowback wind negative pressure on advancing under the utility model.
Among the figure: the 36-partition plate.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment:
The diameter that the utility model is used for small-sized cement factory is 2,8 meters, high 10 meters, grog output 10t/h, flue gas generating capacity 60000m
3The flue gas ash removal of the dish tower mechanical transmission shaft kiln of/h.Two limits respectively dispose the utility model (cover of Fig. 2-Fig. 8), air-introduced machine select for use Y4-68-8#D type, back blowing machine to select C for use about shaft kiln
4-73N.5.5 the diameter of type, low resistance cyclonic dust-precipitator (18) is that the center line of 2000mm, high 4000mm, flue gas access (20) is horizontal by 20 ° of angles, the diameter of exhanst gas outlet (22) and cement in vertical kiln exhaust opening equal diameters link to each other with the air inlet flue (35) that descends the three round bag filters of Room blowback wind negative pressure (12).The height that goes out the three round bag filters of Room blowback wind negative pressure (12) on advancing down is 12200mm, casing (34) diameter is 3960mm, and the specification of filter bag (29) is: Φ 180 * 8200mm, and every chamber is established 90, the material of filter bag (29) is a glass buiky yarn bag, total filter area 1251m
2, the height of whirl cylinder (32) is 1000mm, and filter bag air inlet flue is rectangular, and it is of a size of 800 * 1000.Adopting gross investment of the present utility model is 300,000 yuan, and unit flue gas ash removal facility investment volume is 5.36 yuan/m
3, with prior art 12-20 unit/m
3Compare, reduce 55%-73%.
Use proof through practice: this factory's cement in vertical kiln ash-laden gas is through the utility model dedusting, but qualified discharge enters atmosphere dust concentration≤100mg/m
3, complete compliance with environmental protection requirements.
Life of bag filter can reach 2 years, and compared with prior art double service life.
Through using proof: the problem because of the ash discharge difficulty of dewfall phenomenon appearance does not take place in use the utility model over one year.
The utility model dedusting power consumption is grog 2.56KWh per ton, compares economize on electricity 64%-78% with the 7.12-11.68KWh of prior art.
The utility model compared with prior art has the following advantages:
1, small investment compared with prior art reduces 55%-73%;
2, power consumption is low, and 64%-78% compared with prior art economizes on electricity;
3, the life of bag filter height compared with prior art doubles;
4, dust collection effect is good, smoke dust discharge concentration≤100mg/m3；
5, the filter bag load is little, and the dust-precipitator volume is little, in light weight;
6, compact conformation, flue gas flow weak point, no dewfall phenomenon cause the ash discharge hard problem.
In sum, the utility model is to establish for the desirable dedusting of flue gas of vertical cement kiln qualified discharge Standby.
Claims (2)
1, a kind of energy-saving eddy flow pocket type secondary dust-precipitator that is used for flue gas of vertical cement kiln, it by the low resistance cyclonic dust-precipitator and under go out the round bag filter of three Room blowback wind negative pressure on advancing and combine, it is characterized in that:
Be provided with the whirl cylinder (32) that is connected with the exhanst gas outlet (20) of low resistance cyclonic dust-precipitator (18) 1.1 on advancing down, go out the lower end of the three round bag filters of Room blowback wind negative pressure (12);
1.2 the exhanst gas outlet (20) of low resistance cyclonic dust-precipitator (18) upper end is provided with atmospheric valve (13), its air inlet flue (14) directly is connected with the exhaust opening of cement in vertical kiln.
2, the energy-saving eddy flow pocket type secondary dust-precipitator that is used for flue gas of vertical cement kiln according to claim 1, going out the three round bag filters of Room blowback wind negative pressure (12) on it is characterized in that advancing under said is made up of eddy flow section of gathering dust (I) and fillter section (II), the eddy flow section of gathering dust (I) is by ash bucket (33), lock wind unloading valve (15), whirl cylinder (32) and flue gas access (35) are formed, the section of flue gas access (35) is that rectangle is the tangential direction layout along the whirl cylinder cylindrical, fillter section (II) is by casing (34), filter bag (29), lower face plate (30), top cover (28) and shared air channel (26) are formed, casing (34) is a cylinder, be separated into three Room by 120 ° in the tube, casing is provided with access door (27), (31), filter bag (29) is fixed between top cover (28) and the lower face plate (30) by erecting by overhang and fixture, the exhaust gas volumn size that filter bag quantity is handled by bag filter is determined, top cover (28) is provided with three shared air channels, one of every chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99221695 CN2385786Y (en) | 1999-07-23 | 1999-07-23 | Energy-saving vortex bag type secondary dust collecting apparatus for smoke of cement shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99221695 CN2385786Y (en) | 1999-07-23 | 1999-07-23 | Energy-saving vortex bag type secondary dust collecting apparatus for smoke of cement shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2385786Y true CN2385786Y (en) | 2000-07-05 |
Family
ID=34012217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99221695 Expired - Fee Related CN2385786Y (en) | 1999-07-23 | 1999-07-23 | Energy-saving vortex bag type secondary dust collecting apparatus for smoke of cement shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2385786Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798187A (en) * | 2010-03-08 | 2010-08-11 | 安徽海螺川崎装备制造有限公司 | Bag-type dust collection device for cement production and methods for mounting bag cage and changing bags |
| CN101347697B (en) * | 2007-07-17 | 2011-07-27 | 贵阳铝镁设计研究院有限公司 | Bidirectional rotational flow separation cloth bag dust remover and dust collection method |
-
1999
- 1999-07-23 CN CN 99221695 patent/CN2385786Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347697B (en) * | 2007-07-17 | 2011-07-27 | 贵阳铝镁设计研究院有限公司 | Bidirectional rotational flow separation cloth bag dust remover and dust collection method |
| CN101798187A (en) * | 2010-03-08 | 2010-08-11 | 安徽海螺川崎装备制造有限公司 | Bag-type dust collection device for cement production and methods for mounting bag cage and changing bags |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |