CN105289648A - Globular low temperature flue gas denitration catalyst as well as preparation method and application thereof - Google Patents
Globular low temperature flue gas denitration catalyst as well as preparation method and application thereof Download PDFInfo
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- CN105289648A CN105289648A CN201510867980.XA CN201510867980A CN105289648A CN 105289648 A CN105289648 A CN 105289648A CN 201510867980 A CN201510867980 A CN 201510867980A CN 105289648 A CN105289648 A CN 105289648A
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Abstract
The invention provides a globular low temperature flue gas denitration catalyst as well as a preparation method and application thereof. The globular low temperature flue gas denitration catalyst is prepared from the following components in 100 percent by total weight: 5 to 35wt% of main active component MnO2, 1 to 10wt% of the first auxiliary active component CeO2, 1 to 5wt% of the second auxiliary active component, and the balance of foam ceramic material carriers, wherein the second auxiliary active component is prepared from one or combination of several of CuO, Fe2O3, NiO, Bi2O3, Cr2O3 and Co2O3. The invention also provides the preparation method and the application of the globular low temperature flue gas denitration catalyst. The catalyst is excellent in alkali metal poisoning resistance, water vapour poisoning resistance and sulfur dioxide poisoning resistance, is higher in low temperature (100 to 200 DEG C) denitration activity, and can be used in a cyclic regeneration manner.
Description
Technical field
The present invention relates to a kind of spherical low-temperature denitration of flue gas Catalysts and its preparation method and application, relate to environmental technology field, be specifically related to the flue gases purification field of industrial pot (kiln) stove.
Background technology
At present, the domestic main method for industrial smoke denitration is SCR method, and the denitrating catalyst that SCR method uses is mainly perovskite type catalyst, and this Ca-Ti ore type denitrating catalyst is with titanium-type TiO
2for carrier, and support V on carrier
2o
5, MoO
3, WO
3deng metal oxide as active component.
Adopt described Ca-Ti ore type denitrating catalyst to carry out denitrating flue gas and mainly there is following problem:
(1) technics comparing is complicated, and the support strength after about 600 DEG C sintering is low, and it is in use soaked is easy to out loose, soften;
(2) V
2o
5etc. poisonous, high ash, high temperature state need after using and losing efficacy to carry out useless process of endangering, and add business burden;
(3) be less than under the cryogenic conditions of 200 DEG C, denitration efficiency is lower.
Therefore, exploitation one is needed to have sufficient intensity, the catalytic agent for denitrating smoke that under cryogenic conditions, denitration efficiency is higher.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of spherical low-temperature denitration of flue gas catalyst.
The present invention also aims to the preparation method that above-mentioned spherical low-temperature denitration of flue gas catalyst is provided.
The present invention also aims to provide the application of above-mentioned spherical low-temperature denitration of flue gas catalyst in denitrating flue gas.
For achieving the above object, the invention provides a kind of spherical low-temperature denitration of flue gas catalyst, in the gross weight of described spherical low-temperature denitration of flue gas catalyst for 100%, this catalyst comprises: the main active component of 5-35wt%, first of 1-10wt% helps active component, second of 1-5wt% helps active component, and surplus is carrier;
Described main active component comprises MnO
2, first helps active component to comprise CeO
2, second helps active component to comprise CuO, Fe
2o
3, NiO, Bi
2o
3, Cr
2o
3and Co
2o
3in the combination of one or more; Described carrier is foam ceramic material.
According to catalyst of the present invention, preferably, the particle diameter (diameter of this catalyst spheroid) of described spherical low-temperature denitration of flue gas catalyst is 1.5-2.5cm.
According to catalyst of the present invention, preferably, the content of described main active component is 5-15wt%, and first helps the content of active component to be 5-10wt%.
According to catalyst of the present invention, described manganese, cerium, second help each elements such as active component (combination of one or more in copper, iron, nickel, bismuth, chromium and cobalt) be all with oxidation states amorphous be distributed on the surface of spherical low-temperature denitration of flue gas catalyst.
According to catalyst of the present invention, preferably, described foam ceramic material carrier is by the zeolite powder of 3-6 weight portion, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, and the burnt lost article of 1-4 weight portion and binding agent prepare.
Foam ceramic material carrier used in the present invention is by the zeolite powder of 3-6 weight portion substantially, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, the burnt lost article of 1-4 weight portion and binding agent prepare, but if SO in industry kiln (stove) flue gas
2when content is larger, the component such as copper sulphate and iron ore can be added in preparation process.
According to catalyst of the present invention, preferably, described foam ceramic material carrier is by the zeolite powder of 4-5 weight portion, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, the burnt lost article of 2-4 weight portion and binding agent, the copper sulphate of 1-2 weight portion and/or the iron ore of 1-2 weight portion prepare.Iron ore used in the present invention is any commercially available conventional products.
According to catalyst of the present invention, above-mentioned foam ceramic material carrier is for raw material with the inorganic mineral material of environmental protection, coupled ion function of exchange, prepare through sintering under middle hot conditions, it can as the carrier of spherical low-temperature denitration of flue gas catalyst of the present invention.
According to catalyst of the present invention, preferably, described zeolite powder comprises 13X type zeolite or modenite.
According to catalyst of the present invention, preferably, the particle diameter of described zeolite powder is 250-350 order.
According to catalyst of the present invention, preferably, described fly ash grain is porous grain type shape, and the particle diameter of its particle is 0.5-300 μm, and porosity is 50-80%.
According to catalyst of the present invention, oxide main in flyash used in the present invention consists of: SiO
2, Al
2o
3, FeO, Fe
2o
3, CaO, TiO
2deng.Fly ash grain is that porous type is cellular, and specific area is comparatively large, and have higher adsorption activity, the particle size range of particle is 0.5-300 μm, and Zhu Bi has loose structure, and porosity, up to 50-80%, has very strong water imbibition.In the preferred embodiment of the present invention, the flyash used is purchased from double tower mountain, Chengde City, Hebei Province power plant.
According to catalyst of the present invention, preferably, the described lost article that burns comprises coal dust or flour.Add in catalyst carrier of the present invention and can burn lost article, the specific area of catalyst carrier can be increased, catalyst carrier is after roasting, space and the water absorption rate of catalyst carrier can be increased further, but after being through the high temperature sintering of 800-1100 DEG C, in foam ceramic material carrier, do not burn lost article containing above-mentioned.Coal dust used in the present invention and flour are commercially available conventional products, and in a preferred embodiment of the invention, coal dust is purchased from Shanxi, and flour can be any commercially available flour.
According to catalyst of the present invention, preferably, described binding agent comprises bentonite or CMC.
According to catalyst of the present invention, CuO, Fe
2o
3, NiO, Bi
2o
3, Cr
2o
3and Co
2o
3help the interpolation kind of active component to need according to field operation needs Deng second, namely according to the actual conditions of industrial pot (kiln) stove, select the combination of one or more wherein to add.Such as: the SO in flue gas
2exceed standard, then those skilled in the art can select to add CuO in spherical low-temperature denitration of flue gas catalyst of the present invention and help active component as second.In the preferred embodiment of the present invention, if this spherical low-temperature denitration of flue gas catalyst contains CuO, be then that the content of 100%, CuO is for 1-4wt% in the gross weight of described spherical low-temperature denitration of flue gas catalyst; If this spherical low-temperature denitration of flue gas catalyst contains Fe
2o
3, then in the gross weight of described spherical low-temperature denitration of flue gas catalyst for 100%, Fe
2o
3content be 1-5wt%.
Present invention also offers the preparation method of above-mentioned spherical low-temperature denitration of flue gas catalyst, this preparation method comprises the following steps:
A, help the precursor of active component to be added to the water the precursor of manganese, the precursor of cerium and second, stir, obtain solution A;
B, described foam ceramic material carrier joined in solution A that step a obtains and carry out incipient impregnation reaction, after reaction terminates, after drying, roasting are carried out to the solid product be obtained by reacting, obtain described spherical low-temperature denitration of flue gas catalyst.
According to method of the present invention, preferably, the precursor of described manganese comprises manganese nitrate or manganese acetate, and the precursor of cerium comprises cerous nitrate, and second helps the precursor of active component to be the second nitrate helping activity component metal.
According to method of the present invention, preferably, the reaction temperature of described incipient impregnation reaction is 20-40 DEG C, and the reaction time is 1-6h;
More preferably reaction temperature is 25 DEG C, and the reaction time is 1h.
According to method of the present invention, preferably, described drying is at 100-160 DEG C of dry 8-20h;
Be more preferably at 150 DEG C of dry 8h.
According to method of the present invention, described drying is the technological means of this area routine, and those skilled in the art can, according to field operation needs, select suitable drying mode to carry out drying to spherical low-temperature denitration of flue gas catalyst of the present invention.The preferred embodiment of the present invention needs to carry out natural drying operation before heat-drying step, and described heat drying is at 100-160 DEG C of dry 10-20h; Be preferably at 150 DEG C of dry 8h;
Described natural drying is at room temperature dry 24-48h.
According to method of the present invention, preferably, the temperature of described roasting is 250-450 DEG C, and roasting time is 5-20h;
More preferably the temperature of roasting is 350 DEG C, and roasting time is 9h.In the preferred embodiment of the present invention, described baking operation carries out in Muffle furnace.
According to method of the present invention, preferably, the preparation of described foam ceramic material carrier comprises the following steps:
By described zeolite powder, flyash, silicon ore, can lost article be burnt and binding agent mixes, through agglomerating, extrude spherical after, then drying, sintering, obtain described foam ceramic material carrier.
According to method of the present invention, preferably, described foam ceramic material carrier is by the zeolite powder of 3-6 weight portion, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, and the burnt lost article of 1-4 weight portion and binding agent prepare.
Foam ceramic material carrier used in the present invention is by the zeolite powder of 3-6 weight portion substantially, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, the burnt lost article of 1-4 weight portion and binding agent prepare, but if SO in industry kiln (stove) flue gas
2when content is larger, the component such as copper sulphate and iron ore can be added in preparation process.
According to method of the present invention, preferably, described foam ceramic material carrier is by the zeolite powder of 4-5 weight portion, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, the burnt lost article of 2-4 weight portion and binding agent, the copper sulphate of 1-2 weight portion and/or the iron ore of 1-2 weight portion prepare.Iron ore used in the present invention is any commercially available conventional products.
According to method of the present invention, preferably, described drying is at 20-50 DEG C of dry 20-25h;
According to method of the present invention, preferably, the temperature of described sintering is 800-1100 DEG C, and roasting time is 4-8h.
According to method of the present invention, preferably, described zeolite powder comprises 13X type zeolite or modenite.
According to method of the present invention, preferably, the particle diameter of described zeolite powder is 250-350 order.
According to method of the present invention, preferably, described fly ash grain is porous grain type shape, and the particle diameter of its particle is 0.5-300 μm, and porosity is 50-80%.
According to method of the present invention, preferably, the described lost article that burns comprises coal dust or flour.
According to method of the present invention, preferably, described binding agent comprises bentonite or CMC.
Present invention also offers the application of above-mentioned spherical low-temperature denitration of flue gas catalyst in denitrating flue gas.This spherical low-temperature denitration of flue gas catalyst utilizes the smoke components NO_x removal in pot (kiln) stove as far as possible in application process, and (main component is NO and NO
2), need not outer ammonification, can cost of use be reduced, save expensive spray ammonia system and ammoniacal liquor storing and transporting system, ammonia phenomenon of overflowing, but need the concentration control system that relatively accurately can control reducing gas CO and H-C concentration.
The carrier that the spherical low-temperature denitration of flue gas catalyst of the present invention adopts is foam ceramic material, this foam ceramic material carrier has good formability, do not contain the disadvantageous harmful substance of environment, and this foam ceramic material carrier is with low cost, wearability is good, resistance to water is strong, this carrier can defend the alkali metal in industrial pot (kiln) kiln gas effectively simultaneously, steam and sulfur dioxide are to its erosion, thus the spherical low-temperature denitration of flue gas catalyst making the present invention prepare possesses excellent alkali resistant metal poisoning performance, steam-resistant poisoning performance and anti-sulfur dioxide poisoning performance.
Spherical low-temperature denitration of flue gas catalyst provided by the invention at a lower temperature (100-200 DEG C) just can remove in flue gas NOx (main component is NO and NO
2), namely this spherical low-temperature denitration of flue gas catalyst has higher low-temperature denitration activity.In addition, this spherical low-temperature denitration of flue gas catalyst can use by circular regeneration.Described spherical low-temperature denitration of flue gas catalyst is in running a period of time, and after poisoning and deactivation, it can under the effect of flue wind-force, and in denitrating tower, motion rotates, and grinds mutually, grinds the poisoning part of spherical catalyst surface; Spherical low-temperature denitration of flue gas catalyst after grinding takes off the part of surface poisoning to be regenerated, and then can regenerate catalytic action; And the existing catalyst for denitrating flue gas in this area is after the erosion being subject to alkali metal, sulfur dioxide and water vapour, easily because of poisoning and inactivation, these reasons cause the service life of the existing catalyst for denitrating flue gas in this area shorter, are generally 2-3.In the regenerative process of spherical low-temperature denitration of flue gas catalyst, do not affect the continuous seepage of enterprise, do not need to carry out shut-down (breakdown) mainteance yet.
In addition, each component in spherical low-temperature denitration of flue gas catalyst provided by the invention is nontoxic component, and it can not work the mischief to health and ecological environment, and the preparation method of this spherical low-temperature denitration of flue gas catalyst is simple.
Detailed description of the invention
Clearly understand to have technical characteristic of the present invention, object and beneficial effect thereof, now in conjunction with following specific embodiment, following detailed description is carried out to technical scheme of the present invention, but can not be understood as to of the present invention can the concrete restriction of practical range.
Embodiment 1
Present embodiments provide a kind of preparation method of spherical low-temperature denitration of flue gas catalyst, wherein, this preparation method comprises the following steps:
1, the preparation of foam ceramic material carrier:
By 5 weight portion 300 object zeolite powders (13X type zeolite), the flyash of 2 weight portions, the silicon ore (silicon ore that Weichang, Hebei province produces) of 1 weight portion, the burnt lost article (it comprises the coal dust of 1.5 weight portions and the flour of 0.5 weight portion) of 2 weight portions and the binding agent (bentonite) of 1 weight portion, the brown iron oxide of 1.5 weight portions, putting into dry powder blender, to carry out fully mixing agglomerating, then proceeding to spherical kneader extrudes spherical, dry in 50 DEG C of drying boxes, sizing 24h, send in Muffle furnace, after 900-1000 DEG C of sintering 5h, obtain described foam ceramic material carrier.
2, the load of active component
The foam ceramic material carrier that a, the step 1 of getting certain mass prepare, the percentage accounting for the gross mass of the spherical low-temperature denitration of flue gas catalyst comprising carrier by active component precursor is 22wt%, the mol ratio that manganese nitrate accounts for catalyst activity component is the requirement of 0.8 (mol ratio is 80%), the quality of the manganese nitrate required for calculating, cerous nitrate, copper nitrate, the ratio being 8:1:1 according to mol ratio by manganese nitrate, cerous nitrate, copper nitrate is added to the water, stir, be made into mixed aqueous solution;
B, the foam ceramic material carrier step 1 of certain mass prepared add in the above-mentioned aqueous solution, 2h (2-5h) is soaked at the temperature of 28 DEG C, after the complete loaded body absorption of solution to be impregnated, in 120 DEG C of drying boxes after dry 10h, 5h is calcined, obtained described spherical low-temperature denitration of flue gas catalyst at 350 DEG C.
Embodiment 2
Present embodiments provide a kind of preparation method of spherical low-temperature denitration of flue gas catalyst, wherein, this preparation method comprises the following steps:
1, the preparation of foam ceramic material carrier:
By the 300 object zeolite powders (13X type zeolite) of 5 weight portions, the flyash of 2 weight portions, the silicon ore (silicon ore that Weichang, Hebei province produces) of 1 weight portion, the coal dust of 0.4 weight portion, the flour of 0.1 weight portion, the CMC of 0.5 weight portion, the bentonite of 1 weight portion puts into dry powder blender, and to carry out fully mixing agglomerating, then proceeding to spherical kneader extrudes spherical, dry in 50 DEG C of drying boxes, sizing 25h, send in Muffle furnace, 5h after 800-1000 DEG C of sintering, obtains described foam ceramic material carrier.
2, the load of active component
The foam ceramic material carrier that a, the step 1 of getting certain mass prepare, the percentage accounting for the gross mass of the spherical low-temperature denitration of flue gas catalyst comprising carrier by active component precursor is 20wt%, the mol ratio that manganese nitrate accounts for catalyst activity component is the requirement of 0.75 (mol ratio is 75%), the quality of the manganese nitrate required for calculating, cerous nitrate, nickel nitrate, the ratio being 15:2:3 according to mol ratio by manganese nitrate, cerous nitrate, nickel nitrate is added to the water, stir, be made into mixed aqueous solution;
B, the foam ceramic material carrier step 1 of certain mass prepared add in the above-mentioned aqueous solution, 2h (2-5h) is soaked at the temperature of 28 DEG C, after the complete loaded body absorption of solution to be impregnated, in 120 DEG C of drying boxes after dry 10h, 5h is calcined, obtained described spherical low-temperature denitration of flue gas catalyst at 350 DEG C.
Embodiment 3
Present embodiments provide a kind of preparation method of spherical low-temperature denitration of flue gas catalyst, wherein, this preparation method comprises the following steps:
1, the preparation of foam ceramic material carrier:
By 5 weight portion 300 object zeolite powders (13X type zeolite), the flyash of 2 weight portions, the silicon ore (silicon ore that Weichang, Hebei province produces) of 1 weight portion, the coal dust of 0.5 weight portion, the CMC of 0.5 weight portion, the bentonite of 1 weight portion puts into dry powder blender, and to carry out fully mixing agglomerating, then proceeding to spherical kneader extrudes spherical, dry in 50 DEG C of drying boxes, sizing 20h, send in Muffle furnace, after 800-1100 DEG C of sintering 6h, obtain described foam ceramic material carrier.
2, the load of active component
The foam ceramic material carrier that a, the step 1 of getting certain mass prepare, the percentage accounting for the gross mass of the spherical low-temperature denitration of flue gas catalyst comprising carrier by active component precursor is 15wt%, the mol ratio that manganese nitrate accounts for catalyst activity component is the requirement of 0.7 (mol ratio is 70%), the quality of the manganese nitrate required for calculating, cerous nitrate, bismuth nitrate, the ratio being 7:2:1 according to mol ratio by manganese nitrate, cerous nitrate, bismuth nitrate is added to the water, stir, be made into mixed aqueous solution;
B, the foam ceramic material carrier step 1 of certain mass prepared add in the above-mentioned aqueous solution, 2h (2-5h) is soaked at the temperature of 28 DEG C, after the complete loaded body absorption of solution to be impregnated, in 120 DEG C of drying boxes after dry 10h, 5h is calcined, obtained described spherical low-temperature denitration of flue gas catalyst at 350 DEG C.
Embodiment 4
1, the preparation of foam ceramic material carrier:
The preparation of foam ceramic material carrier is with embodiment 1.
2, the load of active component
The foam ceramic material carrier that a, the step 1 of getting certain mass prepare, the percentage accounting for the gross mass of the spherical low-temperature denitration of flue gas catalyst comprising carrier by active component precursor is 15wt%, the mol ratio that manganese nitrate accounts for catalyst activity component is the requirement of 0.75 (mol ratio is 75%), the quality of the manganese nitrate required for calculating, cerous nitrate, cobalt nitrate, the ratio being 15:3:1:1 according to mol ratio by manganese nitrate, cerous nitrate, cobalt nitrate, nickel nitrate is added to the water, stir, be made into mixed aqueous solution;
B, the foam ceramic material carrier step 1 of certain mass prepared add in the above-mentioned aqueous solution, 2h (2-5h) is soaked at the temperature of 28 DEG C, after the complete loaded body absorption of solution to be impregnated, in 120 DEG C of drying boxes after dry 10h, 5h is calcined, obtained described spherical low-temperature denitration of flue gas catalyst at 350 DEG C.
Application examples 1
Should provide the application of spherical low-temperature denitration of flue gas catalyst in denitrating flue gas that embodiment 1 prepares by use-case, wherein, this application comprises following concrete steps:
Should in use-case, the experimental implementation of denitration Foundation is experiment field routine, those skilled in the art can need reasonably operate according to operation;
In first time denitrating flue gas experiment, be 30Hz by the set of frequency of air-introduced machine, aperture is set to 2cm, adds one group of cellular catalyst, and recording denitration rate after experiment terminates is 43%, but after adding the steam of 6.5%, denitration rate declines significantly;
The module of spherical low-temperature denitration of flue gas catalyst is installed subsequently before honeycombed catalyst denitration module, in module, adds the denitrating catalyst that embodiment 1 prepares, carry out denitrating flue gas experiment, (each constituent content: CO in flue gas
2for 12.3v%, O
2for 6.34v%, N
2for 75.36v%, SO
2for 0.263v%, H
2o is 6.5v%), after experiment terminates, through test, the denitration rate 157 DEG C time reaches 64%, and after the steam adding 6.5% again, denitration rate does not also reduce.Experimental result shows that the spherical low-temperature denitration of flue gas catalyst that the present invention prepares has higher denitration activity.
Claims (10)
1. a spherical low-temperature denitration of flue gas catalyst, wherein, in the gross weight of described spherical low-temperature denitration of flue gas catalyst for 100%, this catalyst comprises: the main active component of 5-35wt%, first of 1-10wt% helps active component, and second of 1-5wt% helps active component, and surplus is carrier;
Described main active component comprises MnO
2, first helps active component to comprise CeO
2, second helps active component to comprise CuO, Fe
2o
3, NiO, Bi
2o
3, Cr
2o
3and Co
2o
3in the combination of one or more; Described carrier is foam ceramic material;
The particle diameter of preferred described spherical low-temperature denitration of flue gas catalyst is 1.5-2.5cm.
2. catalyst according to claim 1, wherein, the content of described main active component is 5-15wt%, and first helps the content of active component to be 5-10wt%.
3. catalyst according to claim 1, wherein, described foam ceramic material carrier is by the zeolite powder of 3-6 weight portion, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, and the burnt lost article of 1-4 weight portion and binding agent prepare;
Preferred described foam ceramic material carrier is by the zeolite powder of 4-5 weight portion, the flyash of 1-3 weight portion, the silicon ore of 1-3 weight portion, the burnt lost article of 2-4 weight portion and binding agent, the copper sulphate of 1-2 weight portion and/or the iron ore of 1-2 weight portion prepare;
Also preferred described zeolite powder comprises 13X type zeolite or modenite;
Also the particle diameter of preferred described zeolite powder is 250-350 order;
Also preferred described fly ash grain is porous grain type shape, and the particle diameter of its particle is 0.5-300 μm, and porosity is 50-80%;
Also preferably describedly can burn lost article and comprise coal dust or flour;
Also preferred described binding agent comprises bentonite or CMC.
4. the preparation method of the spherical low-temperature denitration of flue gas catalyst described in any one of claim 1-3, wherein, this preparation method comprises the following steps:
A, help the precursor of active component to be added to the water the precursor of manganese, the precursor of cerium and second, stir, obtain solution A;
B, described foam ceramic material carrier joined in solution A that step a obtains and carry out incipient impregnation reaction, after reaction terminates, after drying, roasting are carried out to the solid product be obtained by reacting, obtain described spherical low-temperature denitration of flue gas catalyst.
5. method according to claim 4, wherein, the precursor of described manganese comprises manganese nitrate or manganese acetate, and the precursor of cerium comprises cerous nitrate, and second helps the precursor of active component to be the second nitrate helping activity component metal.
6. method according to claim 4, wherein, the reaction temperature of described incipient impregnation reaction is 20-40 DEG C, and the reaction time is 1-6h;
Preferable reaction temperature is 25 DEG C, and the reaction time is 1h.
7. method according to claim 4, wherein, described drying is at 100-160 DEG C of dry 8-20h; Be preferably at 150 DEG C of dry 8h.
8. method according to claim 4, wherein, the temperature of described roasting is 250-450 DEG C, and roasting time is 5-20h;
The temperature of preferred roasting is 350 DEG C, and roasting time is 9h.
9. the method according to any one of claim 4-8, wherein, the preparation method of described foam ceramic material carrier comprises the following steps:
By described zeolite powder, flyash, silicon ore, can lost article be burnt and binding agent mixes, through agglomerating, extrude spherical after, then drying, sintering, obtain described foam ceramic material carrier;
Preferred described drying is at 20-50 DEG C of dry 20-25h;
Also the temperature of preferred described sintering is 800-1100 DEG C, and sintering time is 4-8h.
10. the application of spherical low-temperature denitration of flue gas catalyst in denitrating flue gas described in any one of claim 1-3.
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