CN110237693A - A kind of cement plant kiln exit gas cooling, desulfurizing synergistic device - Google Patents
A kind of cement plant kiln exit gas cooling, desulfurizing synergistic device Download PDFInfo
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- CN110237693A CN110237693A CN201910516843.XA CN201910516843A CN110237693A CN 110237693 A CN110237693 A CN 110237693A CN 201910516843 A CN201910516843 A CN 201910516843A CN 110237693 A CN110237693 A CN 110237693A
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- outlet
- import
- flue gas
- grinding system
- wet
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- 239000004568 cement Substances 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 title claims abstract description 17
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 15
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000000227 grinding Methods 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 26
- 230000008676 import Effects 0.000 claims abstract description 25
- 238000010410 dusting Methods 0.000 claims abstract description 16
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 13
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 239000004571 lime Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 9
- 239000003517 fume Substances 0.000 description 7
- 235000019738 Limestone Nutrition 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 239000006028 limestone Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- 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
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
-
- 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
- B01D53/75—Multi-step processes
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of cement plant kiln exit gas cooling, desulfurizing synergistic devices, it include raw grinding system, flue gas mixer, lime injection device, bag-type dusting reactor and wet desulfuration tower, the outlet import with raw grinding system respectively of kiln exit gas, the import of flue gas mixer connects, the outlet of raw grinding system, the outlet of flue gas mixer is connect with the feed inlet of lime injection device, lime injection device, bag-type dusting reactor, wet desulfuration tower, chimney is sequentially connected with, the outlet of wet desulfuration tower is connect by by-pass line with the import of flue gas mixer.The present invention carries out drying cooling to kiln exit gas using raw grinding system, when raw grinding system does not work, drying cooling is carried out to kiln exit gas using the wet flue gas that wet desulfuration tower is discharged, it ensure that entering kiln exit gas in wet desulfuration tower guarantees the normal work of wet desulfuration tower lower than 160 DEG C.
Description
Technical field
The present invention relates to cement plant kiln exit gas process field, specifically a kind of cement plant kiln exit gas cooling, desulfurizing synergy
System.
Background technique
As country is to the limitation of mining and the reduction of fat lime stone storage, many cement plants have to using
Low-grade limestone causes the SO in kiln exit gas2It is exceeded, in order to reduce the SO in kiln exit gas2, wet process (kiln can be used
Ash-gypsum) technique progress desulfurization.But the temperature of kiln exit gas is higher, it can be to wet if be directly entered in wet desulfuration tower
Anti-corrosion material glass flake in method desulfurizing tower damages.
Cement plant can dry raw material grinding system using the hot fume of kiln tail, and Raw Material System can generate large quantities of lime stone
Fine powder, limestone fines can be with the part SO in flue gas2Reaction, but raw material grinding system and kiln system operate sync rates about 85%,
When raw material grinding system is out of service (flue-gas temperature increases), actual condition air quantity increases, after being directly entered kiln tail dust-precipitator, meeting
Increase the resistance of deduster and the power consumption of last row blower；There is no a large amount of raw material fine powders, so2 concentration in flue gas can also increase, wet process
The load of desulphurization system can significantly increase.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of cement plant kiln exit gas cooling, desulfurizing synergistic devices, using life
Feed powder grinding system carries out drying cooling to kiln exit gas, when raw grinding system does not work, using wet desulfuration tower discharge
Wet flue gas carries out drying cooling to kiln exit gas, ensure that into kiln exit gas in wet desulfuration tower lower than 160 DEG C, guarantees wet process
The normal work of desulfurizing tower.
The technical solution of the present invention is as follows:
A kind of cement plant kiln exit gas cooling, desulfurizing synergistic device includes raw grinding system, flue gas mixer, lime
The outlet of powder injection apparatus, bag-type dusting reactor and wet desulfuration tower, the cement plant kiln exit gas passes through admission line
It is connect respectively with the import of raw grinding system, the import of flue gas mixer, the outlet of the raw grinding system, flue gas are mixed
The outlet of clutch is connect with the feed inlet of lime injection device, and the jet exit and bag-type dusting of lime injection device are anti-
The import of device is answered to connect, the outlet of bag-type dusting reactor and the import of wet desulfuration tower connect, the wet desulfuration tower
Outlet is connect by discharge line with chimney, and by-pass line is connected on the discharge line, the wet desulfuration tower
Outlet is connect by by-pass line with the import of flue gas mixer.
The junction of the discharge line and by-pass line is provided with electromagnetism by-passing valve, the electromagnetism by-passing valve, life
Feed powder grinding system is connect with controller.
Booster fan is provided on the by-pass line, the outlet of wet desulfuration tower passes through by-pass line and booster fan
Import connection, the outlet of booster fan is connect by by-pass line with the import of flue gas mixer.
The outlet of the bag-type dusting reactor is connected by the import of smoke induced draught fan and wet desulfuration tower.
Advantages of the present invention:
(1), the present invention is provided with raw grinding system, and kiln exit gas temperature after cogeneration is down to 200 DEG C or so, with
Hot fume enters raw grinding system and dries to material afterwards, and the flue gas after drying can be near 120 DEG C or so, enters back into subsequent
Bag-type dusting reactor and wet desulfuration tower are dusted and desulfurization process, avoids temperature is excessively high from causing anti-corrosion in wet desulfuration tower
The damage of material glass scale；
(2), raw grinding system of the invention and kiln system operate sync rates general 85%, in raw grinding system and kiln
When system is asynchronous, i.e., the intake valve of raw grinding system can close, and hot fume can enter flue gas mixer at this time and wet process is de-
The wet flue gas of sulphur tower discharge is mixed, so that hot fume is carried out humidifying cooling to 150 DEG C, it is anti-to enter back into subsequent bag-type dusting
It answers device and wet desulfuration tower to be dusted and desulfurization process, avoids temperature is excessively high from causing anti-corrosion material glass squama in wet desulfuration tower
The damage of piece；
(3), lime injection device is arranged in the present invention before bag-type dusting reactor, passes through calcium-base absorbing agent-pulverized limestone
Improve the calcium sulfur ratio of flue gas desulfurization.
It (4), can be effective by being humidified and being supplemented calcium-base absorbing agent-pulverized limestone into the flue gas before deduster
The desulfuration efficiency for improving sack cleaner, reduces the operating load of wet desulphurization.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention, wherein " -- " is saturation wet flue gas pipeline, and " --- " is the hot cigarette of kiln tail
Air pipe.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
See that Fig. 1, a kind of cement plant kiln exit gas cooling, desulfurizing synergistic device include raw grinding system 1, flue gas mixing
Device 2, lime injection device 3, bag-type dusting reactor 4 and wet desulfuration tower 6, the outlet of cement plant kiln exit gas pass through air inlet
Pipeline is connect with the import of raw grinding system 1, the import of flue gas mixer 2 respectively, the outlet of raw grinding system 1, flue gas
The outlet of mixer 2 is connect with the feed inlet of lime injection device 3, the jet exit and pocket type of lime injection device 3
The import of dedusting reactor 4 connects, and the outlet of bag-type dusting reactor 4 passes through the import of smoke induced draught fan 5 and wet desulfuration tower 6
The outlet of connection, wet desulfuration tower 6 is connect by discharge line with chimney 7, and by-pass line, bypass pipe are connected on discharge line
Booster fan 8 is provided on road, the outlet of wet desulfuration tower 6 is connect by by-pass line with the import of booster fan 8, and wind is pressurized
The outlet of machine 8 is connect by by-pass line with the import of flue gas mixer 2, and the junction of discharge line and by-pass line is provided with
Electromagnetism by-passing valve 9, electromagnetism by-passing valve 9, raw grinding system 1 are connect with controller.
When 1 intake valve of raw grinding system is opened, kiln exit gas temperature after cogeneration is down to 200 DEG C or so, then
Hot fume, which enters raw grinding system, dries material, and the flue gas after drying can be near 120 DEG C or so, enters back into subsequent bag
Formula dedusting reactor and wet desulfuration tower are dusted and desulfurization process；When 1 intake valve of raw grinding system is not switched on, control
Device acquires the switching value of 1 intake valve of raw grinding system, then controls electromagnetism by-passing valve 9 and opens, wet desulfuration tower is discharged at this time
Wet flue gas can enter flue gas mixer be mixed with kiln tail hot fume, thus by hot fume progress humidifying cooling to 150 DEG C,
It enters back into subsequent bag-type dusting reactor and wet desulfuration tower is dusted and desulfurization process, flue gas up to standard is discharged by chimney 7
To atmosphere.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of cement plant kiln exit gas cooling, desulfurizing synergistic device, it is characterised in that: include that raw grinding system, flue gas are mixed
The outlet of clutch, lime injection device, bag-type dusting reactor and wet desulfuration tower, the cement plant kiln exit gas passes through
Admission line is connect with the import of raw grinding system, the import of flue gas mixer respectively, and the raw grinding system goes out
Mouthful, the outlet of flue gas mixer connect with the feed inlet of lime injection device, the jet exit of lime injection device and
The import of bag-type dusting reactor connects, and the outlet of bag-type dusting reactor and the import of wet desulfuration tower connect, and described is wet
The outlet of method desulfurizing tower is connect by discharge line with chimney, by-pass line is connected on the discharge line, described is wet
The outlet of method desulfurizing tower is connect by by-pass line with the import of flue gas mixer.
2. a kind of cement plant kiln exit gas cooling, desulfurizing synergistic device according to claim 1, it is characterised in that: described
The junction of discharge line and by-pass line is provided with electromagnetism by-passing valve, the electromagnetism by-passing valve, raw grinding system with
Controller connection.
3. a kind of cement plant kiln exit gas cooling, desulfurizing synergistic device according to claim 1, it is characterised in that: described
Booster fan is provided on by-pass line, the outlet of wet desulfuration tower is connected by the import of by-pass line and booster fan, increased
The outlet of pressure fan is connect by by-pass line with the import of flue gas mixer.
4. a kind of cement plant kiln exit gas cooling, desulfurizing synergistic device according to claim 1, it is characterised in that: described
The outlet of bag-type dusting reactor is connected by the import of smoke induced draught fan and wet desulfuration tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516843.XA CN110237693A (en) | 2019-06-14 | 2019-06-14 | A kind of cement plant kiln exit gas cooling, desulfurizing synergistic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516843.XA CN110237693A (en) | 2019-06-14 | 2019-06-14 | A kind of cement plant kiln exit gas cooling, desulfurizing synergistic device |
Publications (1)
| Publication Number | Publication Date |
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| CN110237693A true CN110237693A (en) | 2019-09-17 |
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| CN201910516843.XA Pending CN110237693A (en) | 2019-06-14 | 2019-06-14 | A kind of cement plant kiln exit gas cooling, desulfurizing synergistic device |
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|---|---|---|---|---|
| JPH02298315A (en) * | 1989-05-11 | 1990-12-10 | Chiyoda Corp | Wet type treatment method for flue gas desulfurization drainage |
| CN1425491A (en) * | 2002-12-09 | 2003-06-25 | 武汉凯迪电力股份有限公司 | Composite Circulation fluidized dry desulfurization process for flue gas and desalfurizing reaction tower |
| CN103591599A (en) * | 2013-11-21 | 2014-02-19 | 上海大学 | Discharged flue gas self-heating technology of wet flue gas desulfurization and desulfuration purified flue gas self-heating device |
| CN108479332A (en) * | 2018-04-16 | 2018-09-04 | 天津华赛尔传热设备有限公司 | A kind of low-temperature flue gas desulphurization denitration disappears white system |
| CN108554144A (en) * | 2018-06-07 | 2018-09-21 | 中国科学院过程工程研究所 | A kind of SCR denitration system suitable for the high-alkali flue gas of the high dirt of cement kiln tail |
| CN207951081U (en) * | 2018-01-05 | 2018-10-12 | 北京万信同和能源科技有限公司 | Wet plume abatement equipment for catalytic cracking wet desulphurization device |
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-
2019
- 2019-06-14 CN CN201910516843.XA patent/CN110237693A/en active Pending
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