CN107233790A - Rotary kiln denitration method for flue gas and system - Google Patents
Rotary kiln denitration method for flue gas and system Download PDFInfo
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- CN107233790A CN107233790A CN201610192320.0A CN201610192320A CN107233790A CN 107233790 A CN107233790 A CN 107233790A CN 201610192320 A CN201610192320 A CN 201610192320A CN 107233790 A CN107233790 A CN 107233790A
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- rotary kiln
- flue gas
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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
- B01D53/34—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
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- B01D53/79—Injecting reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of rotary kiln denitration method for flue gas and system, and the rotary kiln flue gas is sinters the waste gas produced by raw slurry in rotary kiln, and methods described comprises the following steps：The raw slurry and reductant solution are mixed into generation mixed liquor, the mixed liquor is sprayed into and heated in the rotary kiln, the denitration of the rotary kiln flue gas is realized.The method of denitration can effectively realize wet process rotary kiln denitrating flue gas, and denitrating flue gas rate is more than 49.7%, safely and effectively, economical and efficient.
Description
Technical field
The present invention relates to rotary kiln denitration method for flue gas and system, belong to rotary kiln pollutant emission control skill
Art field.
Background technology
At present, with national environmental protection situation increasingly serious and every environmentally friendly system progressively execution, flue gas
Middle pollutant emission is progressively tightened up, and every pollutant emission standard is more and more stricter,《Atmosphere pollution is comprehensive
Close discharge standard》(GB16297-1996) regulation emission limits of nitrogen oxides is in secondary standard
240mg/m3,《Cement industry atmosphere pollutants emission standardses》(GB4915-2013) nitrogen oxidation is provided
Thing emission limit is 400mg/m3,《Fossil-fuel power plant atmospheric pollutant emission standard》(GB13223-2011) advise
Emission limits of nitrogen oxides is determined for 100mg/m3.Currently, although《Aluminum i ndustry pollutant emission standard》
(GB25465-2010) and《Industrial furnace atmosphere pollutants emission standardses》(GB9078-1996) not
Emission limits of nitrogen oxides is provided, but with progressively strict, the discharged nitrous oxides of environment protection emission
It certainly will be controlled.
At this stage, flue gas NOx concentration of emission generally exists in Alumina Rotary Kiln and cement rotary kiln
500~900mg/m3, it is significantly larger than current《Atmosphere pollutants emission standardses》Middle emission limit, still
There is presently no the denitration method for flue gas designed specifically designed for Alumina Rotary Kiln, and existing cement
Rotary kiln denitration method for flue gas denitration effect is not also notable.
The content of the invention
The present invention provides a kind of rotary kiln denitration method for flue gas and system, can be for being arranged in rotary kiln work
The flue gas put carries out safely and effectively denitration process, and denitration effect is notable.
The present invention provides a kind of rotary kiln denitration method for flue gas, and the rotary kiln flue gas is to be burnt in rotary kiln
The waste gas produced by raw slurry is tied, is comprised the following steps：
The raw slurry and reductant solution are mixed into generation mixed liquor, the mixed liquor is sprayed into institute
State in rotary kiln and heated, realize the denitration of the rotary kiln flue gas.
Rotary kiln is a kind of rotary calcining kiln (being commonly called as rotary kiln), belongs to building equipment class, by by difference
The raw slurry of component, which is put into, to be wherein sintered, can output clinker, high-aluminium vanadine, aluminium hydroxide,
The materials such as active lime.During being sintered to raw slurry, constantly have containing oxynitrides
Flue gas output, therefore the present invention by the way that reductant solution is mixed with raw slurry, do not influenceing raw slurry
While composition, reductant solution is heated and be decomposed into ammonia and other accessory substances, subsequent ammonia
With the oxynitrides in flue gas can fast reaction generation nitrogen, it is achieved thereby that denitrating flue gas.
The rotary kiln denitration method for flue gas that the present invention is provided, can effectively realize wet process rotary kiln denitrating flue gas,
And denitrating flue gas rate is more than 49.7%, safely and effectively, economical and efficient.
Further, the reductant solution be aqueous solution of urea or industrial wastes, wherein, the work
The pH value of industry waste liquid is 12~13.Wherein, reducing agent can be with NHXCompound, specifically
Urea can be selected, when in use the general aqueous solution of urea that urea is formulated as to mass fraction 40%.Remove
Outside urea, due to containing sodium oxide molybdena in industrial wastes, it can also be used as reductant solution.
Further, in the mixed liquor, the envelope-bulk to weight ratio of the raw slurry and reductant solution is 1：
(5~15)., can in order to make reductant solution efficiently realize denitrating flue gas under conditions of most economical
So that the envelope-bulk to weight ratio of raw slurry and reductant solution is controlled 1：(5~15), i.e. raw slurry are with going back
The envelope-bulk to weight ratio of former agent solution is 1m3：(5~15) kg, it is preferred that raw slurry and reductant solution
Envelope-bulk to weight ratio be 1m3：(6.25~12.5) kg.
Further, it is 50~65 DEG C to control the mixing temperature, and the mixing time is 1~3h；Control
It is 700~1200 DEG C to make the heating-up temperature, and the heat time is 0.5~2h.Due to the kiln of rotary kiln
There is heating burner as first, therefore when reductant solution is mixed with raw slurry, control rotary kiln
In temperature be 50~65 DEG C, and at such a temperature stir 1~3h, so that mixed liquor is generated, at this
At a temperature of raw slurry sintering can't occur in rotary kiln produce flue gas, therefore now also occur de-
Nitre reacts.After mixed liquor is generated, 700~1200 DEG C can be warming up to mixed liquor and rotary kiln is existed
At this temperature maintain 0.5~2h of work, now, raw slurry experience sintering it is logical when can produce flue gas, and
Reductant solution is also decomposed into ammonia when heated, and then, ammonia can and flue gas in oxynitrides hair
Raw redox reaction generation nitrogen, and complete the denitration of flue gas.It is preferred that, mixed liquor can be heated up
To 800~1000 DEG C and rotary kiln is set to maintain work 1h at such a temperature.Herein it should be noted that by
In raw slurry and reductant solution be to be sprayed into by the kiln tail of rotary kiln into rotary kiln, therefore in order to protect
Card raw slurry or reductant solution will not occur to separate out showing for solidification because sputtering or remaining in kiln tail
As the temperature for generally controlling rotary kiln is 220~260 DEG C.
Further, the heating is realized by the coal that burns, and the volume matter of the raw slurry and coal
Amount is than being 1：(100~300).To the sintering of raw slurry supplied by burner when being worked due to rotary kiln
The heat given, therefore, can be by life when carrying out burning offer heat by adding coal in the burner
The volume mass of slurry and coal is controlled 1：The volume mass ratio of (100~300), i.e. raw slurry and coal is
1m3：(100~300) kg, per 1m3What raw slurry can be provided by (100~300) kg coal combustions
Heat completes sintering and denitration operation, and the ratio ensure that in most rational coal resource utilization scope most
The denitration of the sintering and flue gas of the completion raw slurry of big degree.It is preferred that, can be by raw slurry and coal
Volume mass is controlled in 1m3：(120~200) kg.
Further, in terms of mass fraction, the water content of the raw slurry is 35~45%；The raw material
The granularity of slurry is 100~150 mesh.Water content herein refers to the attached water contained in raw slurry slurries,
Not comprising the crystallization water, preferably can be by the water content control 38~43%.Meanwhile, by raw slurry
Before being mixed with reductant solution, raw slurry can also be ground, by solid particle in raw slurry
Task-size Controlling is in 100~150 mesh, preferably 120 mesh.
Present invention also offers a kind of rotary kiln flue gas denitrification system, including reducing agent allotment conveying device,
Raw slurry storing-conveying apparatus, mixing arrangement, drawing-in device, rotary kiln；Wherein, the reducing agent is adjusted
It is connected respectively with the mixing arrangement with conveying device and raw slurry storing-conveying apparatus；The mixing arrangement
It is connected by the drawing-in device with the rotary kiln.
Specifically, reducing agent allotment induction system is used for preparing reductant solution and will configure going back for completion
Former agent solution is delivered in mixing arrangement, and raw slurry storing-conveying apparatus is used for storing raw slurry and will given birth to
Slurry pipeline transport is into mixing arrangement, and mixing arrangement is used for carrying out mixing generation by the reducing agent and raw slurry
Mixed liquor.Then, the mixed liquor in mixing arrangement is sprayed into and heating denitration is carried out in rotary kiln by drawing-in device,
The kiln hood that the heating burner of the rotary kiln is arranged on rotary kiln is used for providing heat to rotary kiln.
The rotary kiln flue gas denitrification system of the present invention is constituted simply, just can by the reasonable assembling of above-mentioned part
It is enough that denitrating flue gas is realized in rotary kiln.
Further, reducing agent allotment conveying device includes constant feeder, water tank, dosage bunker,
Delivery pump and flowmeter；The constant feeder and water tank are connected with the dosage bunker respectively, described to match somebody with somebody
Hopper is connected by the delivery pump with flowmeter.
Wherein, constant feeder can convey the reducing agent for specifying quality into dosage bunker, and water tank can
The water for specifying quality is conveyed into dosage bunker, so as to generate the reducing agent of certain mass concentration in dosage bunker
Solution.Delivery pump can convey reductant solution into mixing arrangement, while can also pass through flowmeter
The conveying capacity of reductant solution is monitored, so as to control the mixed proportion of reductant solution and raw slurry.
Further, the raw slurry storing-conveying apparatus also includes grinding unit, and the grinding unit is used
To be ground to raw slurry.The grinding unit can be specially tube mill or ball mill, for life
Raw slurry in slurry storing-conveying apparatus is ground.
Further, in addition to dust arrester installation, the dust arrester installation is connected with the rotary kiln.Due to cigarette
Gas is also having exhaust gas and dust etc. after denitration, therefore exhaust gas and dust can be carried out by dust arrester installation
Filter environmental protection treatment.It can think, a chimney can be also connected after dust arrester installation, will be handled through dust arrester installation
Exhaust gas and smoke discharge afterwards.Specifically, the dust arrester installation can be cyclone dust collectors and electric cleaner.
Further, the drawing-in device can include drive device and atomising device.Wherein, driving dress
Put including series connection centrifugal pump or membrane pump, atomising device includes conveyance conduit and spray gun.Drive device energy
Mixed liquor enough in driving mixing arrangement sprays into rotary kiln through spray gun atomization from conveyance conduit for mist particles
In.
In one embodiment, a transfer tube can be included in raw slurry storing-conveying apparatus, for realizing
The conveying of raw slurry；Mixing arrangement can include surge-tank and success slot, and wherein surge-tank is in mixing arrangement
Arrival end, for realizing the mixing of raw slurry and reductant solution, success slot is in the outlet of mixing arrangement
End, for storing mixed liquor, alternatively, can also set an agitating device and heating to fill in surge-tank
Put, realize the uniformity of raw slurry and reductant solution.
Rotary kiln denitration method for flue gas and system that the present invention is provided, it is easy to operate, it is capable of economical and efficient
Realize wet process rotary kiln denitrating flue gas, denitrating flue gas rate is up to more than 49.7%.
Brief description of the drawings
Fig. 1 is the structural representation of rotary kiln flue gas denitrification system of the present invention；
Fig. 2 allocates the structural representation of conveying device for the reducing agent of rotary kiln flue gas denitrification system of the present invention
Figure.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with this hair
Accompanying drawing in bright embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
Embodiment one
Fig. 1 is the structural representation of rotary kiln flue gas denitrification system of the present invention.As shown in figure 1, the system
Including reducing agent allotment conveying device 1, raw slurry storing-conveying apparatus 2, mixing arrangement 3, drawing-in device
4th, rotary kiln 5；
Wherein, reducing agent allotment conveying device 1 and raw slurry storing-conveying apparatus 2 respectively with mixing arrangement
3 connections；Mixing arrangement 3 is connected by drawing-in device 4 with rotary kiln 5.
The rotary kiln flue gas denitrification system that the present embodiment is provided is simple in construction, and fixed by said elements connects
Connect, just can effectively realize that rotary kiln denitrating flue gas is handled.
Fig. 2 allocates the structural representation of conveying device for the reducing agent of rotary kiln flue gas denitrification system of the present invention
Figure.It refer to Fig. 2, reducing agent allotment conveying device 1 includes constant feeder 11, water tank 12, match somebody with somebody
Hopper 13, delivery pump 14 and flowmeter 15；Constant feeder 11 and water tank 12 respectively with dosage bunker
13 connections, dosage bunker 13 is connected by delivery pump 14 and flowmeter 15.
Raw slurry storing-conveying apparatus 2 also includes grinding unit (not shown), and grinding unit is used for raw material
Slurry is ground.
Also include dust arrester installation (not shown), the unit that gathers dust is connected with rotary kiln.
Drawing-in device 4 includes drive device (not shown) and atomising device (not shown).Wherein, drive
Device is series connection centrifugal pump, and atomising device includes conveyance conduit and spray gun.
Mixing arrangement 3 includes surge-tank (not shown) and success slot (not shown), and wherein surge-tank is mixed
The arrival end put is attached together, for realizing the mixing of raw slurry and reductant solution, success slot is in mixing arrangement
The port of export, for storing, an agitating device and heater are set in mixed liquor, surge-tank, realize life
The uniformity of slurry and reductant solution.
Embodiment two
The present embodiment is rotary kiln denitration method for flue gas, and it is taken off by the rotary kiln flue gas of above-described embodiment one
Nitre system is realized.
By taking 50t/h Alumina Rotary Kiln denitrating flue gas as an example, its total exhaust gas volumn is about 20 × 104Nm3/ h, NOx
Content is 700mg/m3, i.e., discharge NOx 140kg per hour.Take mol ratio NH3︰ NOx=2 ︰'s 1
Ratio, then the demand of reducing agent ammonia is 103.5kg/h (demand of urea is 365.3kg/h).
The rotary kiln denitration method for flue gas comprises the steps：
1) it is 40% aqueous solution of urea to allocate conveying device 10t urea is configured into concentration by reducing agent；
2) urea liquid prepared is delivered in mixing arrangement by reducing agent allotment conveying device, raw slurry
The water content ground is that the raw slurry that 40%, granularity is 120 mesh is conveyed into mixing by storing-conveying apparatus
In device, wherein the flowmeter allocated according to reducing agent in conveying device is monitored, make raw slurry and reducing agent
The envelope-bulk to weight ratio of solution is 1m3：12kg, control mixed liquor stirs 2h in mixing arrangement at 55 DEG C.
3) by step 2) obtained by mixed liquor spray gun is delivered to by pumps in series, will be mixed by spray gun atomization
Close liquid mist chemical conversion mist particles to spray into rotary kiln, the urea warp in 2h, mixed liquor is heated at 1000 DEG C
Drying, preheating are crossed, ammonia is finally decomposed to, denitration reaction is carried out with nitrogen oxides in effluent, realizes nitrogen
The conversion of oxide.The heating is realized by the coal combustion in rotary kiln end burner, and controls life
The volume mass ratio of slurry and coal is 1m3：200kg.
Result of the test shows that exit NOx concentration is respectively 195mg/m3, NOx clearances are 72%.
Embodiment three
The present embodiment is rotary kiln denitration method for flue gas, and it is taken off by the rotary kiln flue gas of above-described embodiment one
Nitre system is realized.
By taking 50t/h Alumina Rotary Kiln denitrating flue gas as an example, its total exhaust gas volumn is about 20 × 104Nm3/ h, NOx
Content is 700mg/m3, i.e., discharge NOx 140kg per hour.Take mol ratio NH3︰ NOx=1 ︰'s 1
Ratio, then the demand of reducing agent ammonia is 51.8kg/h (demand of urea is 182.7kg/h).
The rotary kiln denitration method for flue gas comprises the steps：
1) it is 40% aqueous solution of urea to allocate conveying device 10t urea is configured into concentration by reducing agent；
2) urea liquid prepared is delivered in mixing arrangement by reducing agent allotment conveying device, raw slurry
The water content ground is that the raw slurry that 45%, granularity is 150 mesh is conveyed into mixing by storing-conveying apparatus
In device, wherein the flowmeter allocated according to reducing agent in conveying device is monitored, make raw slurry and reducing agent
The envelope-bulk to weight ratio of solution is 1m3：6kg, control mixed liquor stirs 2h in mixing arrangement at 65 DEG C.
3) by step 2) obtained by mixed liquor spray gun is delivered to by pumps in series, will be mixed by spray gun atomization
Close liquid mist chemical conversion mist particles to spray into rotary kiln, the urea warp in 2h, mixed liquor is heated at 800 DEG C
Drying, preheating are crossed, ammonia is finally decomposed to, denitration reaction is carried out with nitrogen oxides in effluent, realizes nitrogen
The conversion of oxide.The heating is realized by the coal combustion in rotary kiln end burner, and controls life
The volume mass ratio of slurry and coal is 1m3：150kg.
Result of the test shows that exit NOx concentration is respectively 352mg/m3, NOx clearances are 49.7%.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than right
It is limited；Although the present invention is described in detail with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments,
Or equivalent substitution is carried out to which part or all technical characteristic；And these modifications or replacement, and
The essence of appropriate technical solution is not set to depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of rotary kiln denitration method for flue gas, the rotary kiln flue gas is that raw slurry is sintered in rotary kiln
Produced waste gas, it is characterised in that comprise the following steps：
The raw slurry and reductant solution are mixed into generation mixed liquor, the mixed liquor is sprayed into institute
State in rotary kiln and heated, realize the denitration of the rotary kiln flue gas.
2. according to the method described in claim 1, it is characterised in that the reductant solution is urea water
Solution or industrial wastes, wherein, the pH value of the industrial wastes is 12~13.
3. according to the method described in claim 1, it is characterised in that in the mixed liquor, the raw material
The envelope-bulk to weight ratio of slurry and reductant solution is 1：(5~15).
4. according to the method described in claim 1, it is characterised in that control the mixing temperature for 50~
65 DEG C, the mixing time is 1~3h；It is 700~1200 DEG C, the heating to control the heating-up temperature
Time is 0.5~2h.
5. according to the method described in claim 1, it is characterised in that the heating is real by the coal that burns
It is existing, and the volume mass ratio of the raw slurry and coal is 1：(100~300).
6. according to the method described in claim 1, it is characterised in that in terms of mass fraction, the raw material
The water content of slurry is 35~45%；
The granularity of the raw slurry is 100~150 mesh.
7. a kind of rotary kiln flue gas denitrification system, it is characterised in that including reducing agent allotment conveying device,
Raw slurry storing-conveying apparatus, mixing arrangement, drawing-in device, rotary kiln；
Wherein, the reducing agent allotment conveying device and raw slurry storing-conveying apparatus are mixed with described respectively
Device is connected；The mixing arrangement is connected by the drawing-in device with the rotary kiln.
8. system according to claim 7, it is characterised in that the reducing agent allocates conveying device
Including constant feeder, water tank, dosage bunker, delivery pump and flowmeter；The constant feeder and storage
Water pot is connected with the dosage bunker respectively, and the dosage bunker is connected by the delivery pump with flowmeter.
9. system according to claim 7, it is characterised in that the raw slurry storing-conveying apparatus
Also include grinding unit, the grinding unit is used for being ground raw slurry.
10. system according to claim 7, it is characterised in that also including dust arrester installation, described
The unit that gathers dust is connected with the rotary kiln.
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| CN201610192320.0A CN107233790A (en) | 2016-03-29 | 2016-03-29 | Rotary kiln denitration method for flue gas and system |
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| CN201610192320.0A CN107233790A (en) | 2016-03-29 | 2016-03-29 | Rotary kiln denitration method for flue gas and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980785A (en) * | 2019-11-19 | 2020-04-10 | 中国铝业股份有限公司 | Sintering method of alumina clinker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100550603B1 (en) * | 2002-03-27 | 2006-03-03 | 홍종두 | NOx REMOVAL APPARATUS and METHOD USING DRY SCRUBBER |
| US20100189618A1 (en) * | 2006-12-22 | 2010-07-29 | Covanta Energy Corporation | Dynamic control of selective non-catalytic reduction system for semi-batch-fed stoker-based municipal solid waste combustion |
| CN102806002A (en) * | 2012-08-22 | 2012-12-05 | 清华大学 | SNCR (selective non-catalytic reduction) denitration device and method for rotary cement kiln nitrogen oxide control |
| CN102806003A (en) * | 2012-08-22 | 2012-12-05 | 清华大学 | SNCR (selective non-catalytic reduction) denitration device and method for rotary cement kiln |
| CN102961954A (en) * | 2012-11-05 | 2013-03-13 | 浙江浙大海元环境科技有限公司 | Exhaust gas NOx emission reduction device of cement kiln |
-
2016
- 2016-03-29 CN CN201610192320.0A patent/CN107233790A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100550603B1 (en) * | 2002-03-27 | 2006-03-03 | 홍종두 | NOx REMOVAL APPARATUS and METHOD USING DRY SCRUBBER |
| US20100189618A1 (en) * | 2006-12-22 | 2010-07-29 | Covanta Energy Corporation | Dynamic control of selective non-catalytic reduction system for semi-batch-fed stoker-based municipal solid waste combustion |
| CN102806002A (en) * | 2012-08-22 | 2012-12-05 | 清华大学 | SNCR (selective non-catalytic reduction) denitration device and method for rotary cement kiln nitrogen oxide control |
| CN102806003A (en) * | 2012-08-22 | 2012-12-05 | 清华大学 | SNCR (selective non-catalytic reduction) denitration device and method for rotary cement kiln |
| CN102961954A (en) * | 2012-11-05 | 2013-03-13 | 浙江浙大海元环境科技有限公司 | Exhaust gas NOx emission reduction device of cement kiln |
Non-Patent Citations (3)
| Title |
|---|
| 尹洁等编著: "《水泥企业清洁生产审核指南》", 30 November 2006, 新华出版社 * |
| 李安平等编著: "《氧化铝回转窑修理技术》", 31 October 2005 * |
| 田文富等主编: "《水泥熟料煅烧过程与操作》", 30 September 2015, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980785A (en) * | 2019-11-19 | 2020-04-10 | 中国铝业股份有限公司 | Sintering method of alumina clinker |
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