CN106268279A - A kind of method of denitration of dry-process cement rotary kiln flue gas - Google Patents
A kind of method of denitration of dry-process cement rotary kiln flue gas Download PDFInfo
- Publication number
- CN106268279A CN106268279A CN201610757457.6A CN201610757457A CN106268279A CN 106268279 A CN106268279 A CN 106268279A CN 201610757457 A CN201610757457 A CN 201610757457A CN 106268279 A CN106268279 A CN 106268279A
- Authority
- CN
- China
- Prior art keywords
- cement
- biomass carbon
- denitration
- flue gas
- oxide
- 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.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims abstract description 49
- 239000003546 flue gas Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000001035 drying Methods 0.000 title abstract description 3
- 239000002028 Biomass Substances 0.000 claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 27
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000001301 oxygen Substances 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000003610 charcoal Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 2
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 2
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 2
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 claims 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 239000004202 carbamide Substances 0.000 description 5
- 235000013877 carbamide Nutrition 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910019923 CrOx Inorganic materials 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910016978 MnOx Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- -1 generate CO Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000010457 zeolite 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
- B01D53/565—Nitrogen oxides by treating the gases with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
-
- 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
- B01D2258/0233—Other waste gases from cement factories
-
- 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
Abstract
The method of denitration of a kind of dry-process cement rotary kiln flue gas, belongs to industrial smoke process field.(1) first mass ratio is 2 by the preparation of material～the biomass carbon of 10% and 90～98% cement slurry mix, stirring, make biomass carbon and cement slurry be sufficiently mixed uniformly；The baking oven of 60～100 DEG C is dried, makes the moisture in material fully volatilize；(2) the mixing material of biomass carbon Yu cement slurry is added directly into cement kiln and decomposes in kiln, utilize the nitrogen oxides in the carbon reduction flue gas in biomass carbon, and the oxide ash in biomass carbon is as the composition of cement, and do not interfere with the performance of cement.Being 0～5% at oxygen, temperature is 700～1000 DEG C, gas flow rate be reach under conditions of 200～1000ml/min more than 60% denitration rate.
Description
Technical field
The present invention relates to a kind of method of denitration for cement kiln flue gas, be specifically related to a kind of new reduction technique for water
Method of denitration in stall dore furnace, belongs to industrial smoke process field.
Background technology
Nitrogen oxides (NOx) it is one of Air Pollutants, depletion of the ozone layer, acid rain and photochemical fog etc. can be caused
Man and nature are had harm greatly, and cement industry are the second largest NO being only second to Thermal Power Generation Industry by series of environmental problemsx
Emission source, therefore finds and effectively reduces cement industry NOxThe method of discharge is most important.Method of denitration primarily now has selection
Property catalytic reduction technique (SCR) and SNCR technology (SNCR), and both technology be required for using ammonia or
Carbamide, as reducing agent, is therefore accomplished by storing up ammonia (carbamide) and spray ammonia (carbamide) device, and there is also the escaping of ammonia phenomenon, cause
Secondary pollution.SNCR denitration technology is to utilize NH3, carbamide etc. make reducing agent, in 850～1 100 DEG C of temperature ranges and flue gas
In NOxCarry out reaction and generate N2.The denitration efficiency of SNCR is low, is typically only 30%～50%, it is desirable to temperature high, to reduction
The requirement of agent injection is the highest, and the formation of ammonium hydrogen sulfate can block air preheater, along with country is to cement kiln NOxDischarge mark
Accurate requirement is more and more higher, and SNCR technology cannot meet.SCR denitration technology refers under the effect of catalyst, utilizes also
Former dose (such as NH3, carbamide) " selective " with the NO in flue gasxReact and generate the N of nontoxic pollution-free2And H2O.For SCR
The catalyst of technology mainly has noble metal catalyst (Pt, Ph, Pd etc.), molecular sieve catalyst (mainly to take ion exchange system
The ion exchanged zeolite become, the metallic element that can be used for ion exchange mainly includes Mn, Cu, Co, Pd, V, Ir, Fe and Ce etc.),
Activated carbon class catalyst (mainly activated carbon, activated carbon fiber, charcoal base honeycomb carrier material and some novel charcoal materials such as carbon
Nanotube even load metal-oxide) and metal oxide-type catalyst (V2O5、WO3、Fe2O3、CuO、CrOx、MnOx、MgO、
MoO3, NiO etc.) four classes.When the price of SCR catalyst prior is higher, performance less stable, catalyst is easily by flying dust in flue gas
Abrasion and corrosion, and the murder by poisoning of alkali metal, arsenic etc. and reduce activity, catalyst poisoning occurs, causes the use longevity of catalyst
Order short.Floor space is big, and reaction unit is complicated, and cost of investment and operating cost are high.Therefore, if a kind of low cost can be found, take off
Nitre efficiency is higher, without the method for denitration that existing boiler is transformed, the development of cement industry will be largely facilitated.Research
Showing, under the temperature conditions more than 700 DEG C, C can reduce NOx, generate CO, CO2And N2.(the Energy& such as Garijo
Fuels.2003,17,1429-1436) to mention in the temperature range of 750～900 DEG C, biomass coke can be with nitrogen oxides
Reaction, and initial denitration rate is the highest.Guo etc. (Energy&Fuels, 2014,28,4762-4768) have studied coal, biomass
The kinetics reacted with graphite and nitric oxide, result shows under the temperature conditions more than 700 DEG C, this reaction be easy to into
OK.The invention disclosed patents (CN102658026A) such as Wang Xuebin refer to that biomass coke is used for fire coal boiler fume take off
Nitre, but the method needs to increase biomass coke injection apparatus, and owing to also having a large amount of remaining alkali metal oxide,
The performance of cement can be impacted, therefore be unfavorable in cement kiln using.The invention disclosed patents such as Shu Yun
(CN104214767A) mention the nitrogen oxides used in biomass reduction flue gas in, but the method in this invention needs first to life
Material carries out pyrolytic, and this will consume the more energy, and apparatus and process is the most complex, and denitration efficiency can only achieve
30～60%.Existing research and invention all cannot be used directly for effective denitration of cement kiln.
Summary of the invention
For problem above, the present invention provides a kind of technique simple, and denitration efficiency is higher, can with effectively save resource with become
This Novel denitration method.
A kind of Novel denitration method for cement kiln dore furnace flue gas comprises the following steps:
(1) first mass ratio is 2 by the preparation of material～the biomass carbon of 10% and 90～98% cement slurry carry out
Mixing, stirring, make biomass carbon and cement slurry be sufficiently mixed uniformly；The baking oven of 60～100 DEG C is dried, makes in material
Moisture fully volatilizees；
(2) the mixing material of biomass carbon Yu cement slurry is added directly into cement kiln decompose in kiln, utilizes biomass
The nitrogen oxides in carbon reduction flue gas in charcoal, and the oxide ash in biomass carbon can be as the composition of cement, and not
The performance of cement can be affected.
Wherein, biomass carbon described in above-mentioned steps mainly includes that the agricultural wastes such as rice husk, straw are in hypoxia or anaerobic
Under the conditions of the material with carbon element of Pintsch process, as used thermal decomposition method, at N2Under environment, under 800 DEG C of Pintsch process 60min techniques
The biomass carbon specific surface area prepared is 986m2/ g, biomass carbon itself is containing a small amount of (about 5wt%) oxide ash, oxygen
Compound preferably mainly comprise the materials such as silicon oxide, sodium oxide, calcium oxide and potassium oxide.
It is an advantage of the invention that the biomass carbon material of employing belongs to Renewable resource, it is achieved that twice laid, and cost
Cheap.When the mixing material of cement slurry with biomass carbon being joined cement kiln decomposition kiln without increasing device, without right
Existing cement kiln carries out transforming, simple to operate.The method in use has stable and efficient denitration rate, and permissible
Meet the condition of most of existing cement kiln.Use 2～the biomass carbon of 10% and 90～the mixing of cement slurry of 98%
When material carries out cement kiln denitration, it is 0～5% oxygen in condition, 700～1000 DEG C of temperature, 200～1000ml/min gas streams
In the range of fast, denitration rate can reach more than 60%.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited to following example.
Embodiment 1
It is 1000ppmNO, 1%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 800 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 60% can be reached.
Embodiment 2
It is 1000ppmNO, 1%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 84% can be reached.
Embodiment 3
It is 1000ppmNO, 1%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 900 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 85% can be reached.
Embodiment 4
It is 1000ppmNO, 2%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 80% can be reached.
Embodiment 5
It is 1000ppmNO, 3%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 73% can be reached.
Embodiment 6
It is 1000ppmNO, 4%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 72% can be reached.
Embodiment 7
It is 1000ppmNO, 5%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 69% can be reached.
Embodiment 8
It is 1000ppmNO, 1%O at flue gas condition2, N2For Balance Air, gas flow rate is 900ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 5%wt (1g) and the cement slurry of 95%wt is dried
In the tube furnace of 3cm, the denitration rate of 65% can be reached.
Embodiment 9
It is 1000ppmNO, 1%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 2%wt (1g) and the cement slurry of 98%wt is dried
In the tube furnace of 3cm, the denitration rate of 65% can be reached.
Embodiment 10
It is 1000ppmNO, 1%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 3%wt (1g) and the cement slurry of 97%wt is dried
In the tube furnace of 3cm, the denitration rate of 77% can be reached.
Embodiment 11
It is 1000ppmNO, 1%O at flue gas condition2, N2For Balance Air, gas flow rate is 450ml/min, and temperature conditions is
When 850 DEG C, join a diameter of after the mixing material of the biomass carbon of 4%wt (1g) and the cement slurry of 96%wt is dried
In the tube furnace of 3cm, the denitration rate of 81% can be reached.
The denitration rate of each embodiment of table 1
Claims (3)
1. the method for denitration for cement kiln dore furnace flue gas, it is characterised in that comprise the following steps:
(1) first mass ratio is 2 by the preparation of material～the biomass carbon of 10% and 90～98% cement slurry mix
Close, stirring, make biomass carbon and cement slurry be sufficiently mixed uniformly；The baking oven of 60～100 DEG C is dried, makes the water in material
Divide fully volatilization；
(2) the mixing material of biomass carbon Yu cement slurry is added directly into cement kiln decompose in kiln, utilizes in biomass carbon
Carbon reduction flue gas in nitrogen oxides, and the oxide ash in biomass carbon is as the composition of cement, and does not interferes with water
The performance of mud.
2. according to a kind of method of denitration for cement kiln dore furnace flue gas described in claim 1, it is characterised in that at oxygen
Being 0～5%, temperature is 700～1000 DEG C, gas flow rate be reach under conditions of 200～1000ml/min more than 60% de-
Nitre rate.
3. according to a kind of method of denitration for cement kiln dore furnace flue gas described in claim 1, it is characterised in that biomass
Charcoal itself contains 5wt% oxide ash, and oxide includes silicon oxide, sodium oxide, calcium oxide and potassium oxide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610757457.6A CN106268279A (en) | 2016-08-29 | 2016-08-29 | A kind of method of denitration of dry-process cement rotary kiln flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610757457.6A CN106268279A (en) | 2016-08-29 | 2016-08-29 | A kind of method of denitration of dry-process cement rotary kiln flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106268279A true CN106268279A (en) | 2017-01-04 |
Family
ID=57674329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610757457.6A Pending CN106268279A (en) | 2016-08-29 | 2016-08-29 | A kind of method of denitration of dry-process cement rotary kiln flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106268279A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380212A (en) * | 2018-03-09 | 2018-08-10 | 北京工业大学 | A kind of inorganic porous material and its application method for cement kiln dore furnace denitrating flue gas |
| CN109499301A (en) * | 2018-11-29 | 2019-03-22 | 北京工业大学 | A kind of method that rice hull ash cooperates with progress dry-process cement rotary kiln dore furnace denitrating flue gas with coal dust |
| CN109603505A (en) * | 2019-01-25 | 2019-04-12 | 广东万引科技发展有限公司 | A kind of method of denitration of the dry-process cement rotary kiln flue gas with biomass bamboo charcoal |
| CN111514726A (en) * | 2019-02-02 | 2020-08-11 | 广东万引科技发展有限公司 | Novel composite biomass denitration agent for dry-process cement kiln, use method of denitration agent and denitration system |
| CN111514739A (en) * | 2019-02-02 | 2020-08-11 | 广东万引科技发展有限公司 | Novel composite biomass denitration powder for dry-process cement kiln, use method of composite biomass denitration powder and denitration system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364246A (en) * | 2011-04-25 | 2012-02-29 | 南京师范大学 | Method and system for collectively removing NOx and mercury (Hg) in coal-fired flue gas by utilizing secondary combustion of biomass charcoal |
| CN102658026A (en) * | 2012-05-30 | 2012-09-12 | 西安交通大学 | Denitration system capable of jetting biomass coke |
| CN203144299U (en) * | 2012-10-19 | 2013-08-21 | 安徽海螺建材设计研究院 | Novel dry-process cement kiln clinker production line employing denitration technology |
| US20140041561A1 (en) * | 2012-08-10 | 2014-02-13 | ADA-ES, Inc. | Method and additive for controlling nitrogen oxide emissions |
| CN104214767A (en) * | 2014-08-14 | 2014-12-17 | 中国环境科学研究院 | Method and device for reducing nitrogen oxides in smoke gas of industrial coal-fired boiler by biomass |
-
2016
- 2016-08-29 CN CN201610757457.6A patent/CN106268279A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364246A (en) * | 2011-04-25 | 2012-02-29 | 南京师范大学 | Method and system for collectively removing NOx and mercury (Hg) in coal-fired flue gas by utilizing secondary combustion of biomass charcoal |
| CN102658026A (en) * | 2012-05-30 | 2012-09-12 | 西安交通大学 | Denitration system capable of jetting biomass coke |
| US20140041561A1 (en) * | 2012-08-10 | 2014-02-13 | ADA-ES, Inc. | Method and additive for controlling nitrogen oxide emissions |
| CN203144299U (en) * | 2012-10-19 | 2013-08-21 | 安徽海螺建材设计研究院 | Novel dry-process cement kiln clinker production line employing denitration technology |
| CN104214767A (en) * | 2014-08-14 | 2014-12-17 | 中国环境科学研究院 | Method and device for reducing nitrogen oxides in smoke gas of industrial coal-fired boiler by biomass |
Non-Patent Citations (1)
| Title |
|---|
| 叶文娟: ""水泥窑炉NOX形成和控制的研究"", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380212A (en) * | 2018-03-09 | 2018-08-10 | 北京工业大学 | A kind of inorganic porous material and its application method for cement kiln dore furnace denitrating flue gas |
| CN109499301A (en) * | 2018-11-29 | 2019-03-22 | 北京工业大学 | A kind of method that rice hull ash cooperates with progress dry-process cement rotary kiln dore furnace denitrating flue gas with coal dust |
| CN109603505A (en) * | 2019-01-25 | 2019-04-12 | 广东万引科技发展有限公司 | A kind of method of denitration of the dry-process cement rotary kiln flue gas with biomass bamboo charcoal |
| CN111514726A (en) * | 2019-02-02 | 2020-08-11 | 广东万引科技发展有限公司 | Novel composite biomass denitration agent for dry-process cement kiln, use method of denitration agent and denitration system |
| CN111514739A (en) * | 2019-02-02 | 2020-08-11 | 广东万引科技发展有限公司 | Novel composite biomass denitration powder for dry-process cement kiln, use method of composite biomass denitration powder and denitration system |
| CN111514726B (en) * | 2019-02-02 | 2024-01-26 | 广东万引科技发展有限公司 | Novel composite biomass denitration agent for dry-method cement kiln, application method of novel composite biomass denitration agent and denitration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106268279A (en) | A kind of method of denitration of dry-process cement rotary kiln flue gas | |
| CN101293170B (en) | Composite sulphur dioxide desulfurizing agent and preparation method thereof | |
| CN101791561B (en) | Desulphurization and denitration catalyst and preparation method thereof | |
| CN102824844A (en) | Desulfurization and denitrification agent, preparation method and application thereof | |
| CN102764643A (en) | Vanadium-titanium oxide catalyst, and preparation method and application thereof | |
| CN113769547A (en) | Granular composite denitration agent and preparation method thereof | |
| CN103433033A (en) | Low-temperature denitration catalyst MnOx-CeO2-TiO2-Al2O3, and preparation method and application thereof | |
| CN104437540A (en) | Phosphorus-resistant low-temperature SCR denitration catalyst and preparation method thereof | |
| CN105854589A (en) | High-temperature in situ catalytic denitration method used for coal combustion process | |
| CN108043210A (en) | A kind of desulfurization of coke oven flue gas and dedusting denitrification integral system | |
| CN104307542A (en) | Carbon-based photocatalytic oxidation denitration catalyst and preparation method thereof | |
| CN114307634A (en) | Granular denitration agent and preparation method and application thereof | |
| CN113769574A (en) | Flue gas full-temperature denitration agent and preparation method thereof | |
| CN103055889A (en) | Low-temperature denitration MnOx-CuO-TiO2 catalyst as well as preparation method and application thereof | |
| CN212492330U (en) | Active coke combined desulfurization and denitrification system based on pre-oxidation | |
| CN109513339A (en) | A kind of high-temperature catalytic restoring method for cement kiln flue gas denitration | |
| CN102989466B (en) | Flue gas desulfurization and denitrification catalyst for reduction method and applications of catalyst | |
| CN102961954B (en) | Exhaust gas NOx emission reduction device of cement kiln | |
| CN209476008U (en) | A kind of low-temperature denitration of flue gas catalytic reaction system | |
| CN107262110B (en) | ternary composite denitration and demercuration catalyst and preparation method thereof | |
| CN104474888B (en) | A kind of processing method of elemental mercury from coal-fired flue gas | |
| CN103170225A (en) | System for realizing combination of oxygen-enriched combustion assistance and flue gas desulfurization and denitrification of industrial kiln furnace | |
| CN109603505A (en) | A kind of method of denitration of the dry-process cement rotary kiln flue gas with biomass bamboo charcoal | |
| CN116212631A (en) | High-temperature SO removal for waste incineration flue gas 2 Synergistic catalytic NOx removal method | |
| CN110787817A (en) | Graphene-loaded bismuth oxyiodide photocatalyst and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |