CN110975512A - Micropore plate dust removal structure on dry desulfurization and denitrification equipment - Google Patents
Micropore plate dust removal structure on dry desulfurization and denitrification equipment Download PDFInfo
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- CN110975512A CN110975512A CN201911102775.9A CN201911102775A CN110975512A CN 110975512 A CN110975512 A CN 110975512A CN 201911102775 A CN201911102775 A CN 201911102775A CN 110975512 A CN110975512 A CN 110975512A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/402—Dinitrogen oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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Abstract
The invention discloses a microporous plate dedusting structure on dry desulfurization and denitrification equipment, which comprises an adsorption tower and an analysis tower, wherein the adsorption tower is provided with a dust collecting chamber; a flue gas inlet is formed in the bottom of the adsorption tower, and a transverse flue gas outlet is formed in the top of the adsorption tower; a front chamber, a middle chamber and a rear chamber are arranged in the adsorption tower; porous plates are arranged between the front chamber and the middle chamber and between the middle chamber and the rear chamber, and porous plates are arranged between the rear chamber and the flue gas outlet; the analysis tower comprises a heating section arranged at the upper part in the analysis tower and a cooling section arranged at the lower part in the analysis tower; the lower end of the adsorption tower is communicated with the upper end of the desorption tower through a desorption tower chain bucket machine for transporting active coke; the lower end of the desorption tower is communicated with the upper end of the adsorption tower through an adsorption tower chain bucket machine for transporting active coke. The invention not only achieves the purpose of reducing the equipment cost and the maintenance cost, but also solves the problem of increasing the occupied area caused by subsequently adding the dust removing equipment.
Description
Technical Field
The invention belongs to the field of sintering and pelletizing flue gas treatment, and particularly relates to a microporous plate dedusting structure on dry desulfurization and denitrification equipment.
Background
Dry desulfurization and denitrification equipment (hereinafter, referred to as DDDS) is equipment for treating large-volume flue gas discharged from sintering machines, pelletizing equipment and the like. The DDDS mainly takes active coke as an adsorbent to absorb harmful substances such as SOx, NOx, dust, heavy metal, dioxin and the like in flue gas so as to reach the national emission standard.
However, at present, the content of dust at the outlet of DDDS equipment is not low enough, and subsequent equipment such as bag dust removal and the like needs to be added, so that the investment amount is increased, and the occupied area is large.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the microporous plate dedusting structure on the dry desulfurization and denitration equipment, the design is reasonable, the porous plates are adopted among chambers of the adsorption tower on the premise of not increasing the subsequent dedusting equipment, the microporous plates are adopted at the outlet, the dedusting efficiency of the DDDS equipment body is effectively improved, the outlet dust concentration reaches the national ultra-low emission standard, the purposes of reducing the equipment cost and the maintenance cost are achieved, and the problem of increasing the occupied area caused by the subsequent addition of the dedusting equipment is solved.
In order to achieve the purpose, the invention provides the following technical scheme:
micropore board dust removal structure on dry process SOx/NOx control equipment, its characterized in that: comprises an adsorption tower and an analysis tower; a flue gas inlet is formed in the bottom of the adsorption tower, and a transverse flue gas outlet is formed in the top of the adsorption tower; a front chamber, a middle chamber and a rear chamber are arranged in the adsorption tower; porous plates are arranged between the front chamber and the middle chamber and between the middle chamber and the rear chamber, and porous plates are arranged between the rear chamber and the flue gas outlet; the analysis tower comprises a heating section arranged at the upper part in the analysis tower and a cooling section arranged at the lower part in the analysis tower; the lower end of the adsorption tower is communicated with the upper end of the desorption tower through a desorption tower chain bucket machine for transporting active coke; the lower end of the desorption tower is communicated with the upper end of the adsorption tower through an adsorption tower chain bucket machine for transporting active coke.
As an optimized technical scheme, a cross beam and a pressing plate are arranged in the adsorption tower, the microporous plate is arranged between the cross beam and the pressing plate, and the cross beam, the microporous plate and the pressing plate are connected together through a connecting bolt and a nut.
As an optimized technical scheme, a microporous plate is directly installed in the adsorption tower through bolts.
As an optimized technical scheme, a plurality of through holes are uniformly formed in the microporous plate, and the microporous plate is provided with baffles which are in one-to-one correspondence with the through holes; the baffle is at an angle of 10-30 degrees.
As an optimized technical scheme, a plurality of through holes are uniformly formed in the microporous plate; the lower part of each through hole protrudes outwards at a certain angle to form an upward inclined baffle.
As an optimized technical scheme, the porous plates are arranged between the front chamber and the middle chamber and between the middle chamber and the rear chamber through bolts.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, on the premise of not increasing subsequent dust removal equipment, the perforated plate is adopted among the chambers of the adsorption tower, and the microporous plate is adopted at the outlet, so that the dust removal efficiency of the DDDS equipment body is effectively improved, the requirement that the outlet dust concentration reaches the national ultra-low emission standard is met, the purposes of reducing the equipment cost and the maintenance cost are achieved, and the problem of increasing the occupied area caused by the subsequent increase of the dust removal equipment is solved.
2. According to the passing ratio of inlet flue gas flow, the microporous plate is provided with a plurality of long through holes, and the lower parts of the through holes are provided with baffles which protrude outwards at a certain angle. When gas passes through the micropore plate, dust particles can collide on the baffle due to the action of the baffle, return to the equipment and are discharged downwards together with active coke in the adsorption tower.
The invention is further illustrated with reference to the figures and examples.
Drawings
FIG. 1 is a schematic overall structure diagram of a dry desulfurization and denitrification apparatus according to an embodiment of the invention;
FIG. 2 is a schematic view showing the internal structure of an adsorption tower according to an embodiment of the present invention;
FIG. 3 is a schematic view showing a structure of a connection manner of a micro-porous plate and an adsorption tower according to an embodiment of the present invention;
FIG. 4 is a schematic diagram showing another mode of connecting the microplate and the adsorption tower in one embodiment of the present invention;
FIG. 5 is a schematic diagram of the operation of the baffles on the microplate in one embodiment of the invention.
Detailed Description
Examples
As shown in fig. 1-5, the microporous plate dedusting structure of the dry desulfurization and denitrification equipment comprises an adsorption tower 1 and a desorption tower 2. The bottom of the adsorption tower 1 is provided with a flue gas inlet, and the top of the adsorption tower is provided with a transverse flue gas outlet. The adsorption tower 1 is internally provided with a front chamber a1, a middle chamber a2 and a rear chamber a 3. Porous plates are arranged between the front chamber a1 and the middle chamber a2, between the middle chamber a2 and the rear chamber a3, and a porous plate a4 is arranged between the rear chamber and the smoke outlet. The desorption tower 2 comprises a heating section arranged at the upper part in the desorption tower and a cooling section arranged at the lower part in the desorption tower. The lower end of the adsorption tower is communicated with the upper end of the desorption tower through a desorption tower chain bucket machine 3 for transporting active coke. The lower end of the desorption tower is communicated with the upper end of the adsorption tower through an adsorption tower chain bucket machine 4 for transporting active coke. In addition, the outlet of the desorption tower is communicated with a desorption gas purification system, and the adsorption tower is communicated with a chimney 5 through a flue gas outlet.
The installation mode of micropore board has two kinds, and the first kind is: the adsorption tower is internally provided with a crossbeam 7 and a pressing plate 9, the microporous plate is arranged between the crossbeam and the pressing plate, and the crossbeam, the microporous plate and the pressing plate are connected together through a connecting bolt 10 and a nut 8. The second method is as follows: the micro-porous plate a4 is directly arranged in the adsorption tower through a bolt b 1.
The baffle has two forms, the first form is: the microporous plate is evenly provided with a plurality of through holes, and the microporous plate is provided with baffle c1 corresponding to the through holes one to one. The baffle is at an angle of 10-30 degrees. The second form is: a plurality of through holes are uniformly formed in the microporous plate; the lower part of each through hole protrudes outwards at a certain angle to form an upward inclined baffle.
The perforated plates are installed between the front and middle chambers and between the middle and rear chambers by bolts for easy installation and replacement.
In actual use, the DDDS equipment mainly comprises main equipment including an adsorption tower 1 and a desorption tower 2. The flue gas introduced by the inlet booster fan enters the adsorption tower through the hood of the adsorption tower. The interior of the adsorption tower is divided into a plurality of working chambers, and the middle of the adsorption tower is filled with active coke. The harmful substances such as SOx, NOx, dust, heavy metal and dioxin in the flue gas are adsorbed in the process of passing through the active coke layers, and the purified flue gas which is discharged out of the adsorption tower cover is discharged from a chimney. In this process, the activated coke having adsorbed the harmful substances such as SOx and NOx is transported to the desorption tower by a chain bucket machine and heated and regenerated, so that the activated coke can be repeatedly used. The desorption tower mainly comprises an upper heating section and a lower cooling section. The active coke is heated to above 400 ℃ in the upper heating section for regeneration, and then cooled to below 120 ℃ in the cooling section so as to avoid ignition caused by overhigh temperature when the active coke returns to the adsorption tower. Because the active coke is abraded, cracked and broken in the moving process, the active coke which is changed into active coke powder or fine particles can be screened out by a vibrating screen at the lower part of the desorption tower, and the insufficient active coke is supplemented by an active coke storage bin. The state requires the iron and steel enterprises to implement the ultra-low emission standard in 2020, SO 2: 35mg/Nm3, NOx: 50mg/Nm3, dust: 10mg/Nm 3. Wherein the requirement of 10mg/Nm3 of outlet dust concentration is difficult to achieve for the company which makes DDDS equipment at home at present.
The outlet dust mainly comprises dust carried by the inlet flue gas and active coke powder generated by the active coke breaking in the moving process. In order to reduce the dust content, besides reducing the blanking speed of the active coke in the adsorption tower, other effective measures are difficult to be taken. Many companies consider adding cloth bag dust removal before and after DDDS, and filter dust to achieve the standard of ultra-low emission. But because the flue gas of the sintering machine and the pelletizing equipment is very large, the required bag type dust removal equipment is also very large. The investment cost of the equipment is high, the occupied area is very large, great troubles are brought to owners with limited sites, and the periodic replacement and maintenance cost of a large number of cloth bags is also very high.
According to the invention, on the premise of not increasing subsequent dust removal equipment, the perforated plate and the microporous plate are adopted at the outlet of the adsorption tower, so that the dust removal efficiency of the DDDS equipment body is effectively improved, the outlet dust concentration reaches the national ultra-low emission standard, the purposes of reducing equipment cost and maintenance cost are achieved, and the problem of increasing the occupied area caused by the subsequent increase of the dust removal equipment is solved.
According to the passing ratio of inlet flue gas flow, the microporous plate is provided with a plurality of long through holes, and the lower parts of the through holes are provided with baffles which protrude outwards at a certain angle. When gas passes through the micropore plate, dust particles can collide on the baffle due to the action of the baffle, return to the equipment and are discharged downwards together with active coke in the adsorption tower.
The protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. Micropore board dust removal structure on dry process SOx/NOx control equipment, its characterized in that: comprises an adsorption tower and an analysis tower; a flue gas inlet is formed in the bottom of the adsorption tower, and a transverse flue gas outlet is formed in the top of the adsorption tower; a front chamber, a middle chamber and a rear chamber are arranged in the adsorption tower; porous plates are arranged between the front chamber and the middle chamber and between the middle chamber and the rear chamber, and porous plates are arranged between the rear chamber and the flue gas outlet;
the analysis tower comprises a heating section arranged at the upper part in the analysis tower and a cooling section arranged at the lower part in the analysis tower;
the lower end of the adsorption tower is communicated with the upper end of the desorption tower through a desorption tower chain bucket machine for transporting active coke; the lower end of the desorption tower is communicated with the upper end of the adsorption tower through an adsorption tower chain bucket machine for transporting active coke.
2. The microporous plate dedusting structure on the dry desulfurization and denitrification equipment according to claim 1, characterized in that: the adsorption tower is internally provided with a cross beam and a pressing plate, the microporous plate is arranged between the cross beam and the pressing plate, and the cross beam, the microporous plate and the pressing plate are connected together through a connecting bolt and a nut.
3. The microporous plate dedusting structure on the dry desulfurization and denitrification equipment according to claim 1, characterized in that: and a microporous plate is directly installed in the adsorption tower through bolts.
4. The microplate dedusting structure on the dry desulfurization and denitrification equipment according to claim 2 or 3, characterized in that: the microporous plate is uniformly provided with a plurality of through holes, and the microporous plate is provided with baffles which are in one-to-one correspondence with the through holes; the baffle is at an angle of 10-30 degrees.
5. The microplate dedusting structure on the dry desulfurization and denitrification equipment according to claim 2 or 3, characterized in that: a plurality of through holes are uniformly formed in the microporous plate; the lower part of each through hole protrudes outwards at a certain angle to form an upward inclined baffle.
6. The microplate dedusting structure on the dry desulfurization and denitrification equipment according to claim 2 or 3, characterized in that: the micro plate is installed between the front chamber and the middle chamber, and between the middle chamber and the rear chamber by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102775.9A CN110975512A (en) | 2019-11-12 | 2019-11-12 | Micropore plate dust removal structure on dry desulfurization and denitrification equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102775.9A CN110975512A (en) | 2019-11-12 | 2019-11-12 | Micropore plate dust removal structure on dry desulfurization and denitrification equipment |
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| CN110975512A true CN110975512A (en) | 2020-04-10 |
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| CN201911102775.9A Pending CN110975512A (en) | 2019-11-12 | 2019-11-12 | Micropore plate dust removal structure on dry desulfurization and denitrification equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527175A (en) * | 2010-12-16 | 2012-07-04 | 中国石油化工股份有限公司 | Dust catcher |
| CN103776013A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler with ash removing function |
| CN207342416U (en) * | 2017-07-19 | 2018-05-11 | 中冶长天国际工程有限责任公司 | A kind of adsorption tower system and system for desulfuration and denitration |
| CN108371873A (en) * | 2018-04-08 | 2018-08-07 | 中冶长天国际工程有限责任公司 | A kind of system for desulfuration and denitration |
| CN109364597A (en) * | 2018-12-05 | 2019-02-22 | 北京诺曼斯佰环保科技有限公司 | Clearing apparatus on gas solid separation interface |
-
2019
- 2019-11-12 CN CN201911102775.9A patent/CN110975512A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527175A (en) * | 2010-12-16 | 2012-07-04 | 中国石油化工股份有限公司 | Dust catcher |
| CN103776013A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler with ash removing function |
| CN207342416U (en) * | 2017-07-19 | 2018-05-11 | 中冶长天国际工程有限责任公司 | A kind of adsorption tower system and system for desulfuration and denitration |
| CN108371873A (en) * | 2018-04-08 | 2018-08-07 | 中冶长天国际工程有限责任公司 | A kind of system for desulfuration and denitration |
| CN109364597A (en) * | 2018-12-05 | 2019-02-22 | 北京诺曼斯佰环保科技有限公司 | Clearing apparatus on gas solid separation interface |
Non-Patent Citations (1)
| Title |
|---|
| 江晶: "《大气污染治理技术与设备》", 31 March 2018, 冶金工业出版社 * |
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Application publication date: 20200410 |