CN115400561B - Be applied to desulfurizing tower of calcium oxide production - Google Patents
Be applied to desulfurizing tower of calcium oxide production Download PDFInfo
- Publication number
- CN115400561B CN115400561B CN202211013057.6A CN202211013057A CN115400561B CN 115400561 B CN115400561 B CN 115400561B CN 202211013057 A CN202211013057 A CN 202211013057A CN 115400561 B CN115400561 B CN 115400561B
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- China
- Prior art keywords
- desulfurization
- tower body
- annular
- conical
- air
- 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.)
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- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000000292 calcium oxide Substances 0.000 title claims abstract description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 230000003009 desulfurizing effect Effects 0.000 title claims description 19
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 81
- 230000023556 desulfurization Effects 0.000 claims abstract description 79
- 239000007921 spray Substances 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005507 spraying Methods 0.000 abstract description 8
- 230000001939 inductive effect Effects 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 235000019738 Limestone Nutrition 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
Abstract
The invention discloses a desulfurization tower applied to calcium oxide production, which comprises a tower body, wherein a desulfurization slurry pool is arranged at the bottom of the tower body, a smoke inlet positioned above the desulfurization slurry pool is arranged at one side of the tower body, an air outlet is arranged at the top of the tower body, an induced draft hood positioned between the smoke inlet and the air outlet is also arranged in the tower body, a desulfurization spray pipe is arranged on the induced draft hood, and the desulfurization spray pipe is connected with a circulating pipe connected with the desulfurization slurry pool; the air inducing cover comprises a bottom conical cover which is fixed in the tower body and has a small upper part and a large lower part, liquid outlets are formed in the front side and the rear side of the bottom conical cover, an air guide pipe is arranged above the bottom conical cover, a conical fixing piece with a large upper part and a small lower part is arranged above the air guide pipe, an annular smoke outlet is formed between the conical fixing piece and the tower body, and the desulfurization spray pipe is fixed on the side wall surface of the conical fixing piece; and an air outlet is arranged on the side wall surface of the air guide pipe. The invention has the characteristic of effectively improving the spraying effect.
Description
Technical Field
The invention relates to a desulfurizing tower, in particular to a desulfurizing tower applied to calcium oxide production.
Background
The process for preparing limestone into calcium oxide by calcination generally comprises the following steps: firstly, coarse crushing limestone to 150mm, and screening out fine slag below 30-50 mm; then adding the screened limestone and fuel into kiln from the kiln top at fixed time and fixed quantity, calcining at 900-1200 deg.C, and cooling so as to obtain the invented finished product. In the calcination process, limestone can generate carbon dioxide, coal or coke can generate sulfur-containing and nitrate-containing flue gas (kiln gas), and the flue gas can be discharged into the air after desulfurization and denitrification treatment. The existing desulfurizing tower generally adopts a wet desulfurization method, namely adopts a mode of spraying desulfurization slurry in a spray tower to carry out desulfurization treatment on flue gas, has a limited spraying angle, ensures that part of flue gas is discharged into the atmosphere without spraying treatment, and causes non-ideal final desulfurization effect and environmental pollution. Therefore, the prior art has the problem of unsatisfactory desulfurization effect.
Disclosure of Invention
The invention aims to provide a desulfurizing tower applied to calcium oxide production. The invention has the characteristic of effectively improving the spraying effect.
The technical scheme of the invention is as follows: the desulfurizing tower comprises a tower body, wherein a desulfurizing slurry pool is arranged at the bottom of the tower body, a smoke inlet positioned above the desulfurizing slurry pool is arranged at one side of the tower body, an air outlet is arranged at the top of the tower body, an induced draft hood positioned between the smoke inlet and the air outlet is also arranged in the tower body, a desulfurizing spray pipe is arranged on the induced draft hood, and the desulfurizing spray pipe is connected with a circulating pipe connected with the desulfurizing slurry pool; the air inducing cover comprises a bottom conical cover which is fixed in the tower body and has a small upper part and a large lower part, liquid outlets are formed in the front side and the rear side of the bottom conical cover, an air guide pipe is arranged above the bottom conical cover, a conical fixing piece with a large upper part and a small lower part is arranged above the air guide pipe, an annular smoke outlet is formed between the conical fixing piece and the tower body, and the desulfurization spray pipe is fixed on the side wall surface of the conical fixing piece; and an air outlet is arranged on the side wall surface of the air guide pipe.
The desulfurization spray pipes comprise a plurality of groups of annular spray pipes which are distributed in a stepped mode, and nozzles are uniformly distributed on the annular spray pipes.
In the desulfurization tower applied to calcium oxide production, annular desulfurization articles which are distributed obliquely downwards and correspond to the annular smoke outlets are arranged above the induced draft hood, desulfurization particles are filled in the annular desulfurization articles, and ventilation holes are formed in the surfaces of the annular desulfurization articles; the upper end of the conical fixing piece is also provided with an annular air deflector which is parallel to the annular desulfurization device.
In the desulfurization tower applied to calcium oxide production, a rotating rod is arranged in the middle of the upper part of the induced draft hood, a group of annularly distributed rotary desulfurization boxes are arranged on the rotating rod, desulfurization particles are arranged in the rotary desulfurization boxes, and exchange through holes are formed in the surfaces of the rotary desulfurization boxes; the outer end of the rotating rod is connected with a driving motor.
In the desulfurization tower applied to calcium oxide production, a filter screen is arranged in the middle of the desulfurization slurry pool, and a circulating pipe is arranged on a tower body above one side of the filter screen; the front side wall surface and the rear side wall surface of the tower body are provided with drainage cavities, and bottom outlets of the drainage cavities are positioned below the filter screen.
The drainage cavity corresponds to the liquid outlet in the desulfurization tower applied to calcium oxide production.
Compared with the prior art, the invention has the advantages that the air guiding cover formed by the conical cover at the bottom, the air guiding pipe and the conical fixing piece is arranged in the tower body, and the desulfurization spray pipes formed by the plurality of groups of annular spray pipes distributed in a stepped manner are arranged on the outer wall surface of the conical fixing piece of the air guiding cover, so that the spray angle can be effectively enlarged, the omnibearing spray is realized, and the spray effect can be effectively improved. Meanwhile, an annular desulfurization object matched with the annular smoke outlet and a rotatable rotary desulfurization box are arranged above the induced draft hood, so that the flue gas is further desulfurized, and the desulfurization effect can be effectively improved; in addition, the rotation of the rotary desulfurization box can also generate disturbance to the flue gas, so that the uniformity of desulfurization is further improved. In conclusion, the invention has the characteristic of effectively improving the spraying effect.
In addition, the bottom conical cover and the liquid outlet are matched with each other, so that sprayed desulfurization slurry can be recovered below the filter screen of the desulfurization slurry pond, and the slurry can be filtered, and the circulating effect is improved; but also can effectively reduce the discharge of slurry carried by flue gas and reduce the loss of the slurry.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a structural view of the induced draft shield;
fig. 3 is a top view of the bottom cone cover.
The marks in the drawings are: the desulfurization tower comprises a 1-tower body, a 2-desulfurization slurry pond, a 3-smoke inlet, a 4-air outlet, a 5-induced air cover, a 6-desulfurization spray pipe, a 7-circulation pipe, a 501-bottom conical cover, a 502-liquid outlet, a 503-air guide pipe, a 504-conical fixing piece, a 505-annular smoke outlet, a 506-air outlet, a 507-annular desulfurization device, a 508-annular air guide plate, an 8-rotary rod, a 9-rotary desulfurization box, a 10-filter screen and an 11-drainage cavity.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Examples. The desulfurizing tower applied to calcium oxide production comprises a tower body 1, wherein the bottom in the tower body 1 is provided with a desulfurizing slurry tank 2, one side of the tower body 1 is provided with a smoke inlet 3 positioned above the desulfurizing slurry tank 2, the top of the tower body 1 is provided with an air outlet 4, the tower body 1 is also internally provided with an air guiding cover 5 positioned between the smoke inlet 3 and the air outlet 4, the air guiding cover 5 is provided with a desulfurizing spray pipe 6, and the desulfurizing spray pipe 6 is connected with a circulating pipe 7 connected with the desulfurizing slurry tank 2; the induced draft hood 5 comprises a bottom conical hood 501 which is fixed in the tower body 1 and has a small upper part and a large lower part, liquid outlets 502 are formed in the front side and the rear side of the bottom conical hood 501, an air guide pipe 503 is arranged above the bottom conical hood 501, a conical fixing piece 504 with a large upper part and a small lower part is arranged above the air guide pipe 503, an annular smoke outlet 505 is formed between the conical fixing piece 504 and the tower body 1, and the desulfurization spray pipe 6 is fixed on the side wall surface of the conical fixing piece 504; an air outlet 506 is arranged on the side wall surface of the air guide pipe 503.
The desulfurization spray pipes 6 comprise a plurality of groups of annular spray pipes which are distributed in a stepped mode, and nozzles are uniformly distributed on the annular spray pipes.
An annular desulfurization object 507 which is distributed obliquely downwards and corresponds to the position of the annular smoke outlet 505 is arranged above the induced draft hood 5, desulfurization particles are filled in the annular desulfurization object 507, and ventilation holes are formed in the surface of the annular desulfurization object 507; the upper end of the conical fixing piece 504 is also provided with an annular air deflector 508 parallel to the annular desulfurization device 507.
A rotary rod 8 is arranged in the middle of the upper part of the induced draft hood 5, a group of annularly distributed rotary desulfurization boxes 9 are arranged on the rotary rod 8, desulfurization particles are arranged in the rotary desulfurization boxes 9, and exchange through holes are formed in the surface of the rotary desulfurization boxes 9; the outer end of the rotating rod 8 is connected with a driving motor.
A filter screen 10 is arranged in the middle of the desulfurization slurry pond 2, and a circulating pipe 7 is arranged on the tower body 1 at one side above the filter screen 10; the front and back side wall surfaces of the tower body 1 are provided with drainage cavities 11, and the bottom outlet of each drainage cavity 11 is positioned below the filter screen 10.
The drainage cavity 11 corresponds to the liquid outlet 502.
The desulfurization slurry pond is also connected with a desulfurization slurry supplementing pipe and a waste liquid recycling pipe.
The working process of the invention comprises the following steps: the flue gas enters the tower body through the flue gas inlet, then enters the bottom conical cover, flows out from the air outlet of the air guide pipe to the spraying cavity between the bottom conical cover and the conical fixing piece, flows out from the annular flue gas outlet after being sprayed by the annular spraying pipe which is distributed in a stepped manner, and is discharged to the external environment or enters the next treatment procedure from the air outlet after being subjected to desulfurization treatment of desulfurization particles in the annular desulfurization device object, and is discharged from the air outlet after being contacted with the desulfurization particles in the rotary desulfurization box under the guidance of the annular air guide plate. The sprayed desulfurization slurry flows back to the lower part of the filter screen of the desulfurization slurry pool through the liquid outlet and the drainage cavity, and is recycled through the circulating pipe after being filtered.
Claims (1)
1. Be applied to desulfurizing tower of calcium oxide production, its characterized in that: the desulfurization tower comprises a tower body (1), wherein a desulfurization slurry pool (2) is arranged at the bottom in the tower body (1), a smoke inlet (3) positioned above the desulfurization slurry pool (2) is arranged at one side of the tower body (1), an air outlet (4) is arranged at the top of the tower body (1), an air guiding cover (5) positioned between the smoke inlet (3) and the air outlet (4) is also arranged in the tower body (1), a desulfurization spray pipe (6) is arranged on the air guiding cover (5), and the desulfurization spray pipe (6) is connected with a circulating pipe (7) connected with the desulfurization slurry pool (2); the induced draft hood (5) comprises a bottom conical hood (501) which is fixed in the tower body (1) and is small in top and large in bottom, liquid outlets (502) are formed in the front side and the rear side of the bottom conical hood (501), an air guide pipe (503) is arranged above the bottom conical hood (501), a conical fixing piece (504) which is large in top and small in bottom is arranged above the air guide pipe (503), an annular smoke outlet (505) is formed between the conical fixing piece (504) and the tower body (1), and the desulfurization spray pipe (6) is fixed on the side wall surface of the conical fixing piece (504); an air outlet (506) is arranged on the side wall surface of the air guide pipe (503); the desulfurization spray pipes (6) comprise a plurality of groups of annular spray pipes which are distributed in a stepped manner, and nozzles are uniformly distributed on the annular spray pipes; annular desulfurization articles (507) which are distributed obliquely downwards and correspond to the annular smoke outlets (505) are arranged above the induced draft hood (5), desulfurization particles are filled in the annular desulfurization articles (507), and ventilation holes are formed in the surface of the annular desulfurization articles (507); the upper end of the conical fixing piece (504) is also provided with an annular air deflector (508) parallel to the annular desulfurization device (507); a rotary rod (8) is arranged in the middle of the upper part of the induced draft hood (5), a group of annularly distributed rotary desulfurization boxes (9) are arranged on the rotary rod (8), desulfurization particles are arranged in the rotary desulfurization boxes (9), and exchange through holes are formed in the surface of the rotary desulfurization boxes (9); the outer end of the rotating rod (8) is connected with a driving motor; a filter screen (10) is arranged in the middle of the desulfurization slurry pond (2), and a circulating pipe (7) is arranged on the tower body (1) at one side above the filter screen (10); drainage cavities (11) are formed in the front side wall surface and the rear side wall surface of the tower body (1), and the bottom outlet of each drainage cavity (11) is positioned below the filter screen (10); the drainage cavity (11) corresponds to the liquid outlet (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211013057.6A CN115400561B (en) | 2022-08-23 | 2022-08-23 | Be applied to desulfurizing tower of calcium oxide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211013057.6A CN115400561B (en) | 2022-08-23 | 2022-08-23 | Be applied to desulfurizing tower of calcium oxide production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115400561A CN115400561A (en) | 2022-11-29 |
| CN115400561B true CN115400561B (en) | 2023-11-24 |
Family
ID=84162393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211013057.6A Active CN115400561B (en) | 2022-08-23 | 2022-08-23 | Be applied to desulfurizing tower of calcium oxide production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115400561B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780243A (en) * | 1993-09-13 | 1995-03-28 | Babcock Hitachi Kk | Desulfurization method and apparatus by desulfurizing agent slurry with high concentration |
| US5686053A (en) * | 1994-05-11 | 1997-11-11 | Babcock-Hitachi Kabushiki Kaisha | Wet-type flue gas desulfurization plant and method making use of a solid desulfurizing agent |
| CN102728207A (en) * | 2012-07-25 | 2012-10-17 | 程爱平 | Multi-funnel slurry collecting disc for desulfurizing absorption tower in cone-frustum-shaped spraying zone |
| KR20170007722A (en) * | 2016-11-29 | 2017-01-20 | 박관서 | Air cleaner with water filter and cone rotating around the inner wall of the cyclone barrel |
| CN106512688A (en) * | 2015-09-23 | 2017-03-22 | 重庆市华旭能源科技有限公司 | Flue gas desulfurization device |
| CN106984165A (en) * | 2017-06-09 | 2017-07-28 | 史汉祥 | A kind of gas cleaning reactor and cone structure part |
| CN108543400A (en) * | 2018-04-04 | 2018-09-18 | 马鞍山科宇环境工程有限公司 | A kind of steam power plant's production high effective desulphurization device |
| CN110152470A (en) * | 2018-04-08 | 2019-08-23 | 淮安智品企业管理有限公司 | A kind of desulfurating dust removing device for flue gas based on spray Wet Flue Gas Desulfurization Technique |
| CN215916947U (en) * | 2021-08-12 | 2022-03-01 | 苏州昊微特智能科技有限公司 | Spray tower with return bend |
-
2022
- 2022-08-23 CN CN202211013057.6A patent/CN115400561B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780243A (en) * | 1993-09-13 | 1995-03-28 | Babcock Hitachi Kk | Desulfurization method and apparatus by desulfurizing agent slurry with high concentration |
| US5686053A (en) * | 1994-05-11 | 1997-11-11 | Babcock-Hitachi Kabushiki Kaisha | Wet-type flue gas desulfurization plant and method making use of a solid desulfurizing agent |
| CN102728207A (en) * | 2012-07-25 | 2012-10-17 | 程爱平 | Multi-funnel slurry collecting disc for desulfurizing absorption tower in cone-frustum-shaped spraying zone |
| CN106512688A (en) * | 2015-09-23 | 2017-03-22 | 重庆市华旭能源科技有限公司 | Flue gas desulfurization device |
| KR20170007722A (en) * | 2016-11-29 | 2017-01-20 | 박관서 | Air cleaner with water filter and cone rotating around the inner wall of the cyclone barrel |
| CN106984165A (en) * | 2017-06-09 | 2017-07-28 | 史汉祥 | A kind of gas cleaning reactor and cone structure part |
| CN108543400A (en) * | 2018-04-04 | 2018-09-18 | 马鞍山科宇环境工程有限公司 | A kind of steam power plant's production high effective desulphurization device |
| CN110152470A (en) * | 2018-04-08 | 2019-08-23 | 淮安智品企业管理有限公司 | A kind of desulfurating dust removing device for flue gas based on spray Wet Flue Gas Desulfurization Technique |
| CN215916947U (en) * | 2021-08-12 | 2022-03-01 | 苏州昊微特智能科技有限公司 | Spray tower with return bend |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115400561A (en) | 2022-11-29 |
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