CN201239598Y - Uniset for controlling cement kiln flue gas NOx - Google Patents

Uniset for controlling cement kiln flue gas NOx Download PDF

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Publication number
CN201239598Y
CN201239598Y CNU2008201309900U CN200820130990U CN201239598Y CN 201239598 Y CN201239598 Y CN 201239598Y CN U2008201309900 U CNU2008201309900 U CN U2008201309900U CN 200820130990 U CN200820130990 U CN 200820130990U CN 201239598 Y CN201239598 Y CN 201239598Y
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China
Prior art keywords
flue gas
cement kiln
straight
reaction tower
links
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Expired - Fee Related
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CNU2008201309900U
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Chinese (zh)
Inventor
俞进旺
宋正华
陈开明
杨正平
何美华
袁海燕
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Jiangsu Kehang Environment Engineering Technology Co., Ltd.
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JIANGSU ZHONGKE ENERGY SAVING ENVIRONMENTAL TECHNOLOGY Co Ltd
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Priority to CNU2008201309900U priority Critical patent/CN201239598Y/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2062Ammonia
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0233Other waste gases from cement factories

Abstract

The utility model provides a combination device for controlling a cement kiln flue gas NOX, which comprises a decomposing furnace, a preheater, a straight-through flow equalizing reaction tower, a high-temperature blower and a reductive agent preparation and supply device. The decomposing furnace is connected with the tail end of a cement kiln, a plurality of spray rods are mounted at the lower part of the inner chamber of the decomposing furnace for spraying an excessive reductive agent, so as to eliminate most of the NOx in the flue gas by adopting SNCR principle; the upper end of the decomposing furnace is connected with the preheater, so that the flue gas and the material in the preheater are subject to heat exchange; the upper end of the preheater is connected with the air inlet of the straight-through flow equalizing reaction tower; and an accelerant module is arranged at the middle part of the straight-through flow equalizing reaction tower, so that the remaining NOx and a reductive agent in the flue gas can be reduced to N2 and H2O. The utility model organically combines an SNCR elimination method with an SCR elimination method, and has the advantages of reasonable process route, high elimination efficiency, small ammonia leakage rate, few investment, low running cost and convenient operation.

Description

A kind of combined unit of flue gas NOx of cement kiln control
Technical field
The utility model belongs to cement manufacturing technology field, relates to a kind of smoke eliminator, particularly a kind of nitrogen oxide (NO that cement kiln is produced X) the flue gas device that adopts SNCR method (SNCR) and selective catalytic reduction (SCR) associating removal methods to administer.
Background technology
In New Type Dry-process Cement Production technology, cement rotary kiln is the key technology equipment that clinker burns till, and also is the main source of NOx, at a large amount of NO of its generation in service XFlue gas shows according to relevant Monitoring Data, greatly about 800~1600mg/Nm 3About, most of cement plant do not reach " cement industry atmosphere pollutants emission standards " GB4915-2004 regulation less than 800mg/Nm 3Requirement, and to require at the environmental protection standard of developed countries such as Germany, the U.S. be less than 200~500mg/Nm 3Therefore, cement rotary kiln NO XDischarging become one of the primary pollution source in cement plant, the atmosphere pollution that causes heavy damage ecological environment.According to statistics, the NO of cement industry XTotal amount has been to occupy thermal power generation, vehicle exhaust the third-largest NO afterwards XThe discharging rich and influential family.
At present, be used for new type nonaqueous cement rotary kiln flue gas and remove NO XControl technology, mainly contain SNCR (SNCR) removal method and SCR (SCR) removal method.The SNCR removal method is to add urea [CO (NH in the dore furnace about 1000 ℃ 2) 2] or ammoniacal liquor (NH 4OH) as reducing agent, NO XIn 950~1050 ℃ temperature range, be reduced agent and be reduced to harmless N 2And H 2O.Because effectively reaction must could take place in the SNCR removal method under 900~1050 ℃ temperature, when temperature is lower than 800 ℃, NH 3Very slow with the reaction speed of NO; NH when temperature is higher than 1300 ℃ 3The trend that changes NO into can become obviously, simultaneously because fluctuate greatly in interior dust concentration height, the flow field of dore furnace, raw ingredients is complicated, so its NO XRemoval efficiency relatively low, have only about 30~40%, and exist the big problem of ammonia leakage rate.The SCR removal method is on the pipeline of the preheater outlet of cement kiln flue gas (about 350 ℃) to be introduced the SCR reaction tower, adds urea [CO (NH on pipeline 2) 2] or ammoniacal liquor (NH 4OH) as reducing agent, NO XUnder catalyst action, be reduced to harmless N by ammonia 2And H 2O.Though the SCR removal method is to NO XRemoval efficiency higher, but the SCR removal method need use the metallic catalyst of expensive vanadium, tungsten class, and consumption is big, its investment and operating cost are higher.
The utility model content
Technical problem to be solved in the utility model is, at the deficiencies in the prior art, provides a kind of cement kiln flue gas NO XThe combined unit of control, its process route is reasonable, organically SNCR and SCR removal method combined, the removal efficiency height, the ammonia slip is little, reduced investment, operating cost is low, and easy to operate.
The technical scheme that its technical problem that solves the utility model adopts is: comprise that dore furnace, preheater, straight-through uniform flow type reaction tower, high-temperature blower and reducing agent prepare feedway; The lower end of dore furnace interlinks by the kiln tail of flue and cement kiln, introduces the NO of high temperature XFlue gas; Be equipped with many in the bottom of dore furnace inner chamber and prepare the spray gun that feedway links to each other, to spray excessive reducing agent, under 900~1050 ℃ of temperature, most of NO with reducing agent XBe reduced into N 2And H 2O; The upper end and the preheater of dore furnace interlink by flue, with preheater in material carry out heat exchange; The upper end of preheater interlinks through the air inlet of flue and straight-through uniform flow type reaction tower upper end, and the flue gas input of reducing to 300~380 ℃ is led directly in the uniform flow type reaction tower; Middle cavities at straight-through uniform flow type reaction tower is equipped with catalyst module, the NO that is not removed in the flue gas XAnd remaining reducing agent is reduced into N under the effect of catalyst module 2And H 2O; Above catalyst module, be provided with acoustic wave soot blower, be used to remove the dust stratification on catalyst module surface; The lower end of straight-through uniform flow type reaction tower is connected to ash bucket, and the end opening of ash bucket is connected to lock wind discharger, and the side of ash bucket is provided with the gas outlet, and this gas outlet and high-temperature blower interlink.High-temperature blower will remove NO by airduct XAfter flue gas deliver to raw material Vertical Mill or deduster and continue udst separation, purified gas is introduced chimney by main exhaust fan, enters atmosphere.
Above-mentioned catalyst module includes tabular catalyst and cage, tabular catalyst be with steel wire as support frame, on support frame, be coated with catalyst powder and make by viscose glue, its upper end is big, the lower end is truncated wedge for a short time; The tabular catalyst branch of several piece multilayer places in the cage equably.Owing to adopt the up big and down small tabular catalyst of truncated wedge, thereby make dust be difficult for sticking to its side, reduce dust to the obstruction in catalyst slit with to the wearing and tearing of catalyst module, prolonged the service life of catalyst module, be applicable to the processing of high concentrate dust.
Above-mentioned ash bucket is the centering type ash bucket, can prevent dust knot arch, causes the stifled ash of ash bucket; And be provided with the venetian blind type filter at place, the gas outlet of centering type ash bucket, and to remove the part dust, reducing the wearing and tearing of dust to high-temperature blower, the dust that filters out directly falls in the ash bucket, by the output of lock wind formula discharger.
Internal upper part at straight-through uniform flow type reaction tower is provided with homogenizing plate, makes flue gas equably by catalyst module, to improve NO XRemoval efficiency.
Above-mentioned reducing agent prepares feedway and includes agitator tank, fluid reservoir, air compression station, pumping plant; The agitator tank that has an agitator interlinks by the top of delivery pump and holding vessel, is input in the fluid reservoir with the reductant solution that will prepare; Fluid reservoir links to each other with the input that adds pump, and the interpolation delivery side of pump is divided into two-way, and one the tunnel links to each other with holding vessel, forms the loop of unnecessary reductant solution, and another road links to each other with the inlet of pumping plant; The air inlet of pumping plant links to each other with air compression station by pressure-reducing valve; The gas outlet of pumping plant links to each other with spray gun with feed pipe and flashboard through the feed flow tracheae respectively with liquid outlet, and with the reductant solution ejection, the droplet that forms atomizing is to dore furnace.
The controlling organization that includes switch board and smoke sampling probe A, probe B, smoke sampling probe A that links to each other with switch board and B place the air inlet and the place, gas outlet of straight-through uniform flow type reaction tower respectively; Switch board also links to each other with acoustic wave soot blower with reducer feeding device, feedforward and feedback signal according to smoke sampling probe A and B, automatically reducing agent flow, pressure and the atomizing effect regulating spray gun and sprayed by switch board are to guarantee the NO of straight-through uniform flow type reaction tower outlet XConcentration satisfies the emission request of environmental protection standard, and regularly catalyst module is carried out deashing, removes the dust stratification of catalyst surface.
Above-mentionedly be installed on many in the dore furnace, be two to four layers, be interspersed, to eliminate the spraying dead angle, the raising removal effect spray gun.
The beneficial effects of the utility model are: because SNCR removal method and SCR removal method are combined, at first adopt SNCR to take off, spray into excessive reducing agent in dore furnace, improved the SNCR removal efficiency, removed most of NO in the flue gas X, the operating pressure of reduction SCR removal method reduces follow-up straight-through uniform flow type reaction tower scale greatly, the consumption of corresponding catalyst module also reduces greatly, saved equipment investment, reduced operating cost, and excessive reducing agent can with the NO that does not remove in the flue gas XIn straight-through uniform flow type reaction tower, under the effect of catalyst with the NO in the flue gas XSubstantially remove, not only removal efficiency height, and ammonia slip is little.Therefore, the utlity model has the advantage that process route is reasonable, removal efficiency is high, the ammonia slip is little, cement kiln NO XSmoke emissioning concentration can be controlled in 200mg/Nm 3Below, and reduced investment, operating cost is low, and is easy to operate.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 prepares the structural representation of feedway for the reducing agent that the utility model adopted;
Fig. 3 is the structural representation of the straight-through uniform flow type reaction tower that the utility model adopted;
Fig. 4 is the structural representation of the catalyst module that the utility model adopted.
Among the figure: 1 prepares feedway for reducing agent, 1-1 is a gate valve, 1-2 is a pressure-reducing valve, 1-3 is a pumping plant, 1-4 is an air supply pipe, 1-5 is a feed pipe, 1-6 is a nozzle, 1-7 is a spray gun, 1-8 is for adding pump, 1-9 is a holding vessel, 1-10 is a filter, 1-11 is a delivery pump, 1-12 is an agitator tank, 1-13 is an agitator, 1-14 is an air compression station, 2 is cement rotary kiln, 3 is dore furnace, 4 is pipeline, 5 is preheater, 6 are straight-through uniform flow type reaction tower, 6-1 is an air inlet, 6-2 is a homogenizing plate, 6-3 is an acoustic wave soot blower, 6-4 is a catalytic reaction chamber, 6-5 is a catalyst module, 6-5-1 is tabular catalyst, 6-5-2 is a cage, 6-6 is an ash bucket, 6-7 is the gas outlet, 6-8 is the venetian blind type filter, 6-9 is lock wind discharger, 7 is the PLC switch board, 8 is high-temperature blower, A and B are the smoke sampling probe, 8 is high-temperature blower.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail:
The utility model comprises that reducing agent prepares feedway 1, dore furnace 3, pipeline 4, preheater 5, straight-through uniform flow type reaction tower 6, high-temperature blower 8 and controlling organization.The lower end of the tail end of rotary kiln 2 and dore furnace 3 interlinks, and is equipped with 12 in the inner chamber bottom of dore furnace 3 and prepares the spray gun 1-7 that feedway 1 links to each other with reducing agent, and spray gun 1-7 is three layers, is interspersed, to eliminate the spraying dead angle; Spray gun 1-7 sprays into excessive reductant solution in the dore furnace 3, under 900~1050 ℃ of temperature, with about 60~65% NO in the flue gas XBe reduced into N 2And H 2O; The upper end of dore furnace 3 and preheater 5 interlink by flue 4, with preheater 5 in material carry out heat exchange; The upper end of preheater 5 interlinks with the horn-like air inlet 6-1 of straight-through uniform flow type reaction tower 6 upper ends through flue 4, high-temperature blower 8, in the straight-through uniform flow type reaction tower 6 of flue gas input of reducing to about 350 ℃; Internal upper part at straight-through uniform flow type reaction tower 6 is provided with the homogenizing plate 6-2 that several piece is ∧ shape, is the catalytic reaction chamber 64 that catalyst module 6-5 is housed at the middle cavities that leads directly to uniform flow type reaction tower 6, the NO that is not removed in the flue gas XAnd remaining reducing agent further is reduced into N under the effect of catalyst module 6-5 2And H 2O; Above-mentioned catalyst module 6-5 includes tabular catalyst 6-5-1 and cage 6-5-2, tabular catalyst 6-5-1 is as support frame with steel wire, on support frame by viscose glue be coated with vanadium, tungsten class catalyst powder is made, the upper end of tabular catalyst 6-5 is big, the lower end is truncated wedge for a short time; The tabular catalyst 6-5-1 of several piece branch multilayer places in the cage 6-5-2 equably.Owing to adopt the up big and down small tabular catalyst 6-5-1 of truncated wedge, thereby make dust be difficult for sticking to its side, reduced dust to the obstruction in tabular catalyst 6-5-1 slit with to the wearing and tearing of catalyst module 6-5, prolong the service life of catalyst module 6-5, be specially adapted to the processing of high concentrate dust.Above catalyst module 6-5, be provided with acoustic wave soot blower 6-3, be used to remove the dust stratification on catalyst module 6-5 surface; The lower end of straight-through uniform flow type reaction tower 6 is connected to ash bucket 6-6, and the end opening of ash bucket 6-6 is connected to lock wind discharger 6-9, and the side of ash bucket 6-6 is provided with trumpet-shaped gas outlet 6-7, and this gas outlet 6-7 and high-temperature blower 8 interlink; Above-mentioned ash bucket 6-6 is the centering type ash bucket, can prevent dust knot arch, causes the stifled ash of ash bucket; And be provided with venetian blind type filter 6-8 at 6-7 place, the gas outlet of ash bucket 6-6, and to remove the part dust, reducing the wearing and tearing of dust to high-temperature blower 8, the dust that filters out directly falls in the ash bucket 6-6.High-temperature blower 8 will remove NO by airduct XAfter flue gas deliver to follow-up deduster and continue udst separation, purified gas is introduced chimney by main exhaust fan, enters atmosphere.
The reducing agent that the utility model adopted prepares feedway 1 and includes by gate valve 1-1, pressure-reducing valve 1-2, pumping plant 1-3, air supply pipe 1-4, feed pipe 1-5, nozzle 1-6, spray gun 1-7, adds pump 1-8, holding vessel 1-9, filter 1-10, delivery pump 1-11, agitator tank 1-12, agitator 1-13.Wherein agitator 1-13 is installed in the agitator tank 1-12, filter 1-10 is installed in the agitator tank 1-12, pass through pipeline, gate valve 1-1 links to each other with delivery pump 1-11, delivery pump 1-11 is connected with the top of holding vessel 1-9 with gate valve 1-1 through pipeline, the reductant solution for preparing is sent into holding vessel 1-9, filter 1-10 is housed in the holding vessel 1-9, solution among the holding vessel 1-9 is removed impurity after filtering through filter 1-10, an end that adds pump 1-8 interlinks by pipeline and gate valve 1-1 and holding vessel 1-9, the other end is divided into two-way after by gate valve 1-1, the pipeline of leading up to links to each other with holding vessel 1-9 with gate valve 1-1 and forms the loop of unnecessary reductant solution, and another road links to each other by the inlet of pipeline with pumping plant 1-3.The air inlet of pumping plant 1-3 is connected with air compression station 1-14 by gate valve 1-1, pressure-reducing valve 1-2 and pipeline, and the gas outlet of pumping plant 1-3 and liquid outlet interlink with the air supply pipe 1-4 of annular and the feed pipe 1-5 of annular respectively by pipeline respectively.Air supply pipe 1-4 and feed pipe 1-5 interlink by two interfaces of gate valve 1-1, pipeline and spray gun 1-7 respectively.Nozzle 1-6 is installed in the end of spray gun 1-7, and reductant solution forms the droplet of atomizing to dore furnace 3 by nozzle 1-6 ejection.
The controlling organization that the utility model adopted includes switch board 7, smoke sampling probe A and probe B, smoke sampling probe A that links to each other with switch board 7 and B place the air inlet 6-1 and the gas outlet 6-7 place of straight-through uniform flow type reaction tower 6 respectively, with the NO of the straight-through uniform flow type reaction tower 6 of control turnover X, NH 3Duty parameter such as concentration and flue-gas temperature.PLC switch board 7 links to each other with pumping plant 1-3, interpolation pump 1-8, agitator tank 1-12, holding vessel 1-9, delivery pump 1-11, agitator 1-13 that reducing agent prepares feedway 1, being used for automatically, control provides reducing agent and compressed-air actuated pressure to spray gun 1-7, to guarantee flow, pressure and the atomizing effect of spray nozzle 1-6, and realize the automatic adjusting of flow according to the variation of operating modes such as smoke components and temperature, control the start-stop of each pump simultaneously, keep the level stability of agitator tank 1-12 and holding vessel 1-9.PLC switch board 7 also links to each other with acoustic wave soot blower 6-3, regularly catalyst module 6-5 is carried out deashing, removes the dust stratification of catalyst surface.
The utility model at first adopts the SNCR removal method because SNCR removal method and SCR removal method are combined, and sprays into excessive reducing agent in dore furnace 3, has improved the SNCR removal efficiency, most of NO in the flue gas XRemove, reduce the operating pressure of SCR removal method, the scale of follow-up straight-through uniform flow type reaction tower 6 is reduced greatly, catalyst consumption also reduces greatly, has saved equipment investment, has reduced operating cost, and excessive reducing agent can with the NO that does not remove in the flue gas XIn straight-through uniform flow type reaction tower 6, under the effect of catalyst with the NO in the flue gas XSubstantially remove, not only NO XThe removal efficiency height, and the slip of ammonia is little.Therefore, the utlity model has process route rationally, NO XRemoval efficiency height, the advantage that the ammonia slip is little, cement kiln NO XSmoke emissioning concentration can be controlled in 200mg/Nm 3Below, and reduced investment, operating cost is low, and is easy to operate.

Claims (7)

1, a kind of cement kiln flue gas NO xThe combined unit of control is characterized in that: comprise that dore furnace, preheater, straight-through uniform flow type reaction tower, high-temperature blower and reducing agent prepare feedway; The lower end of dore furnace interlinks by the kiln tail of flue and cement kiln, is equipped with many in the bottom of dore furnace inner chamber and prepares the spray gun that feedway links to each other with reducing agent; The upper end and the preheater of dore furnace interlink by flue, and the upper end of preheater interlinks through the air inlet of flue and straight-through uniform flow type reaction tower upper end; Middle cavities at straight-through uniform flow type reaction tower is equipped with catalyst module, is provided with acoustic wave soot blower above catalyst module; The lower end of straight-through uniform flow type reaction tower is connected to ash bucket, and the end opening of ash bucket is connected to lock wind discharger, and the side of ash bucket is provided with the gas outlet, and this gas outlet and high-temperature blower interlink.
2, a kind of cement kiln flue gas NO according to claim 1 xThe combined unit of control, it is characterized in that: above-mentioned catalyst module includes tabular catalyst and cage, tabular catalyst be with steel wire as support frame, on support frame, be coated with catalyst powder and make by viscose glue, its upper end is big, the lower end is truncated wedge for a short time; The tabular catalyst branch of several piece multilayer places in the cage equably.
3, a kind of cement kiln flue gas NO according to claim 1 xThe combined unit of control, it is characterized in that: above-mentioned ash bucket is the centering type ash bucket, can prevent dust knot arch, causes the stifled ash of ash bucket; And be provided with the venetian blind type filter at place, the gas outlet of centering type ash bucket, and to remove the part dust, reducing the wearing and tearing of dust to high-temperature blower, the dust that filters out directly falls in the ash bucket, by the output of lock wind formula discharger.
4, a kind of cement kiln flue gas NO according to claim 1 xThe combined unit of control is characterized in that: be provided with at the internal upper part of straight-through uniform flow type reaction tower and make the flue gas homogenizing plate by catalyst module equably.
5, a kind of cement kiln flue gas NO according to claim 1 xThe combined unit of control, it is characterized in that: above-mentioned reducing agent prepares feedway and includes agitator tank, fluid reservoir, air compression station, pumping plant; The agitator tank that has an agitator interlinks by the top of delivery pump and holding vessel; Fluid reservoir links to each other with the input that adds pump, and the interpolation delivery side of pump is divided into two-way, and one the tunnel links to each other with holding vessel, forms the loop of unnecessary reductant solution, and another road links to each other with the inlet of pumping plant; The air inlet of pumping plant links to each other with air compression station by pressure-reducing valve; The gas outlet of pumping plant links to each other with spray gun with feed pipe and flashboard through the feed flow tracheae respectively with liquid outlet.
6, a kind of cement kiln flue gas NO according to claim 1 xThe combined unit of control is characterized in that: above-mentionedly be installed on many spray gun in the dore furnace, be two to four layers, be interspersed.
7, a kind of cement kiln flue gas NO according to claim 1 xThe combined unit of control is characterized in that: include the controlling organization of switch board and smoke sampling probe A, probe B, smoke sampling probe A that links to each other with switch board and B place the air inlet and the place, gas outlet of SCR reacting furnace respectively; Switch board also links to each other with acoustic wave soot blower with reducer feeding device.
CNU2008201309900U 2008-07-25 2008-07-25 Uniset for controlling cement kiln flue gas NOx Expired - Fee Related CN201239598Y (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102107116A (en) * 2011-01-12 2011-06-29 北京工业大学 Method for treating nitric oxide produced by burning coal in cement kiln by dry method
CN102658022A (en) * 2012-05-29 2012-09-12 福建龙净环保股份有限公司 SNCR (Selective non-catalytic reaction) denitration system
CN103611412A (en) * 2013-12-04 2014-03-05 无锡雪浪环境科技股份有限公司 Flue gas denitrification system
CN104772014A (en) * 2015-04-10 2015-07-15 无锡华光新动力环保科技股份有限公司 Combined denitration device for flue gas of cement rotary kiln and denitration technology for flue gas
CN105889975A (en) * 2016-04-18 2016-08-24 廖引家 NOx emission reduction method for cement plant
CN106457142A (en) * 2014-04-12 2017-02-22 Khd洪保德韦达克有限公司 Method and system for the denitrification of flue gases by means of SNCR (selective non-catalytic reduction) and downstream catalyst for ammonia decomposition

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102107116A (en) * 2011-01-12 2011-06-29 北京工业大学 Method for treating nitric oxide produced by burning coal in cement kiln by dry method
CN102658022A (en) * 2012-05-29 2012-09-12 福建龙净环保股份有限公司 SNCR (Selective non-catalytic reaction) denitration system
CN103611412A (en) * 2013-12-04 2014-03-05 无锡雪浪环境科技股份有限公司 Flue gas denitrification system
CN106457142A (en) * 2014-04-12 2017-02-22 Khd洪保德韦达克有限公司 Method and system for the denitrification of flue gases by means of SNCR (selective non-catalytic reduction) and downstream catalyst for ammonia decomposition
CN104772014A (en) * 2015-04-10 2015-07-15 无锡华光新动力环保科技股份有限公司 Combined denitration device for flue gas of cement rotary kiln and denitration technology for flue gas
CN105889975A (en) * 2016-04-18 2016-08-24 廖引家 NOx emission reduction method for cement plant

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