Title: de-NOx catalysts, and method for production thereof
Technology areas

[0001]
Invention, for example on deNOx process exhaust gas from a coal-fired boiler and DeNOx catalyst, and method for production thereof should.
His innovations.

[0002]
In General, applied to coal-fired boiler flue gas DeNOx catalyst deterioration are clogging by fly ash of coals, trace amounts of heavy metals and arsenic. Then play through the age-related deterioration in recent years, de-NOx catalysts, again use cases are increasing.
[0003]
And alkaline cleaning is effective in removal of arsenic and fly ash by washing acid is effective in removal of heavy metals as a DeNOx catalyst regeneration process adhered to the de-NOx catalysts, is known.
[0004]
On the other hand, had a problem of unable to play operation cannot dissolved silica alkaline action to regenerate the DeNOx catalyst for DeNOx catalyst below of the patent literature and patent literature 2 manufactured in traditional ways in using Sol as a binder for the maintenance of forms, but inferior to the alkali silica Sol, degraded performance in the binder to keep the shape.
[0005]
In the patent literature 3 below as inorganic Binder for silica SOLS non-proposed use of zirconia. Also following patent literature 4, as an inorganic Binder materials, proposed using the zirconiazol.
Patent literature 1: p-Patent No. 4881716 No.
Patent literature 2: p-Patent No. 5022697 No.
Patent literature 3: special opening of the Akira 61-234935 Gazette
Patent literature 4: special square no. 11-216370 bulletin
Disclosure of the invention

Inventors are trying to solve a problem

[0006]
Had a problem due to agglomeration of energetics, however, in the above patent literature 3 and zirconium Crystal forms by firing conducted through high-temperature DeNOx catalyst, catalyst components with titanium and vanadium, significantly reduced catalytic activity. There were also zirconiazol as inorganic Binder material used in the patent literature 4, cost factors that problems.
[0007]
Has sufficient mechanical strength can keep the forms in alkali processing in order to play deteriorated NOx catalyst performance, object of the present invention solves traditional technology issues above, and with conventional zirconium Crystal and DeNOx catalyst, catalyst performance is better than that in manufacturing costs are cheaper, which provides de-NOx catalysts, and method for production thereof;
Means for resolving problems

[0008]
Prepare a slurry containing Titania and ammonium metavanadate, with soluble zirconium compounds was investigated without leaching Binder in the alkaline action to regenerate the catalyst research opportunities the inventors, in light of the above results, degraded performance to shape sustainable ways, this slurry inorganic fiber sheets or become more, immersed in coating, or honeycomb structures by firing after drying In what led to the headlines that you can get the DeNOx catalyst at low cost, to meet the demands and to perfect the invention.
[0009]
In order to achieve the purposes described above, the invention of claim 1 and DeNOx catalyst material honeycomb structure comprising inorganic fiber sheets, as a honeycomb structure, titanium, vanadium oxide and / or tungsten oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and a play that has characterized.
[0010]
The invention of claim 2 in claim 1 in de NOx catalysts in the oxide as shape keep binders of zirconium compounds (except zirconium dioxide in crystalline) catalyst in elemental percentages in 1-is characterized by up to 20%.
[0011]
The invention of claim 3 in claim 1 in de-NOx catalysts, inorganic fiber sheets in the glass fiber, or ceramic fiber sheet on feature.
[0012]
The invention of claim 4 is DeNOx catalyst material honeycomb structure comprising inorganic fiber sheet manufacturing method, zirconium salt water solution Titania particles suspension immersed in honeycomb structure comprising inorganic fiber sheet obtained were added, and the suspended slurry powder ammonium metavanadate, or ammonium metavanadate powder and ammonium metatungstate powder to slurry, slurry out of it, then drying and are characterized by firing at or below 550 ° C.
[0013]
The invention of claim 5 in manufacturing method of honeycomb structure comprising inorganic fiber sheet substrate deNOx catalysts, zirconium salt water solution Titania particles suspended immersed inorganic fiber sheet obtained were added, and the suspended slurry powder ammonium metavanadate, or ammonium metavanadate powder and ammonium metatungstate powder to slurry, which removed from the slurry, and then dried and the slurry coated inorganic fiber sheet and then Forms with process catalysts containing fiber sheets of corrugated prepared piece of plate-type catalyst containing fiber sheets obtained from, catalyst content fiber sheets of corrugated and flat and then firing at or below 550 ° C, after firing flat and corrugated baking catalyst content fiber sheets with laminated alternately to form a catalyst-loaded with honeycomb structure that has characterized.
[0014]
The invention of claim 6 claim 4 or 5 removal of NOx catalyst manufacture method for firing 300-at 550 ° C that has characterized.
[0015]
The invention of claim 7 to claim 4 or 5 in de-NOx catalysts for manufacturing the zirconium salt solution is an aqueous solution of zirconium or zirconium chloride and zirconium has characterized.
Advantageous effects of invention

[0016]
According to the DeNOx catalyst of the present invention, e.g. effect of catalyst performance better than the DeNOx catalysts and with conventional zirconium Crystal has sufficient mechanical strength to retain alkali processing in order to play the DeNOx catalyst for DeNOx catalyst used in the denitrification process, coal fired boiler flue, deteriorated performance catalyst that can do the trick.
[0017]
You can have sufficient mechanical strength, such as above according to the production methods of DeNOx catalyst of the present invention, and to manufacture the de-NOx catalysts having high catalyst performance and effect of DeNOx catalyst manufacturing cost is cheaper, and do not use the zirconiazol as a conventional zirconia material for the trick.
A brief description of the drawings

[0018]
In a flow chart indicating the test apparatus for DeNOx catalyst for invention [Figure 1].
In the graph shows the analysis results of x-ray diffraction of DeNOx catalyst [Fig. 2].
Best mode for carrying out the invention

[0019]
Described embodiments of the present invention, the invention is not be limited to these.
[0020]
DeNOx catalyst of the present invention is the DeNOx catalyst material honeycomb structure comprising inorganic fiber sheet as a honeycomb structure, titanium, vanadium oxide and / or tungsten oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and a play that has characterized.
[0021]
Namely, zirconium compounds of this invention is characterized by having no zirconium dioxide in crystalline structure, represented as described below fig. 2 x-ray diffraction analysis. Therefore, the means described herein does not include the "zirconium compounds (except zirconium dioxide in crystalline)" and the zirconium dioxide in crystalline effect. Invention, in particular, of zirconium compounds of the amorphous State in play is that good. Specifically to the removal as an amorphous zirconium, zirconium in non-crystalline amorphous zirconium, zirconium chloride of amorphous State NOx catalysts that is preferable.
[0022]
Element proportion of binders shape maintenance of zirconium compounds (except zirconium dioxide in crystalline) catalyst in oxide in 1-to 20 weight percent favorable. Here the element ratio of zirconium compounds (except zirconium dioxide in crystalline) catalyst in less than 1% by weight in the oxide conversion, shape maintenance difficult, and also due to poor wear resistance is undesirable. In addition, element percentage of zirconium compounds (except zirconium dioxide in crystalline) catalytic oxide equivalent over 20%, and reduces the catalyst compositions and decreased activity, so unfavorable.
[0023]
Also, more preferably as shape keep binders of zirconium compounds (except zirconium dioxide in crystalline) catalyst in elemental percentages at the oxide conversion 12-18% by weight. Here the element ratio of zirconium compounds (except zirconium dioxide in crystalline) catalyst in more than 12% by weight in the oxide conversion, keep the shape more favorable for that. Also for the elemental ratio of zirconium compounds (except zirconium dioxide in crystalline) catalyst in oxide conversion 18% by weight in the case of the following economically preferable in that.
[0024]
DeNOx catalyst of the present invention, inorganic fiber sheets are preferable to glass fibers, or ceramic fiber sheet.
[0025]
DeNOx catalyst material honeycomb structure comprising inorganic fiber sheet manufacturing method, manufacturing method of DeNOx catalyst of the present invention is in a brine solution Titania particles suspended after it removed from the slurry, honeycomb structure comprising inorganic fiber sheet slurry obtained were added, and the suspended slurry powder ammonium metavanadate acid or ammonium metavanadate powder and ammonium metatungstate to soak and dry and are characterized by firing at or below 550 ° C.
[0026]
More specifically, manufacturing method of DeNOx catalyst of the present invention, include following two different ways. First first, in manufacturing method of honeycomb structure comprising inorganic fiber sheet substrate deNOx catalysts manufacturing method of DeNOx catalyst of the present invention is a salt water solution Titania particles suspension immersed in honeycomb structure comprising inorganic fiber sheet metavanadate ammonium powder added to the suspended slurry, stirring slurry, which removed from the slurry, dried and then fired at or below 550 ° C honeycomb structure, titanium and vanadium oxides and As a shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and supported research for development.
[0027]
Next second, manufacturing method of DeNOx catalyst of the present invention DeNOx catalyst material honeycomb structure comprising inorganic fiber sheet manufacturing method is, zirconium salt water solution Titania particles suspended immersed in the honeycomb structure and addition of ammonium metavanadate powder and ammonium metatungstate suspended slurry than inorganic fiber sheets, this slurry, which removed from the slurry, dried and fired at or below 550 ° C, honeycomb, titanium, and vanadium oxide, And tungsten oxides and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and supported research for development.
[0028]
Manufacturing methods of DeNOx catalyst of the present invention, firing a 300-550 ° C at 1-preferably in under four hours.
[0029]
You can do without falling of DeNOx catalyst activity in baking conditions, if a uniform baking. Also, that order cannot be maintained because firing at less than 300 ° C, and does not function as a binder of zirconium compounds as a shape keeping Binder, shape. 550 ° C, beyond firing and zirconium compounds with known can be crystallized into zirconium dioxide in crystalline.
[0030]
Manufacturing methods of DeNOx catalyst of the present invention, zirconium salt solution is zirconium [ZrO (C2H3O2)2], zirconium chloride [ZrO (Cl2) andH 2O ], or zirconium [ZrO (NO3)2] in preferably in aqueous solution.
[0031]
Good manufacturing methods of DeNOx catalyst of the present invention, and separated by bulkhead and the honeycomb (comb), and possible gas distribution multiple openings (cell) and the bulkhead and integral structure, include for example circular, circular, square, rectangular, hexagonal cross section above through holes (cell cross section shape) is not particularly limited.
[0032]
And manufacturing method of DeNOx catalyst of the present invention to catalyst composition containing slurry above soaking honeycomb structure, honeycomb structure pre-assembled honeycomb (comb)-inorganic fiber sheet soaking method (A) and inorganic fiber sheet of honeycomb structure material sheets remain soaking method (B).
[0033]
Method (A) above, zirconium salt water solution Titania particles suspension metavanadate ammonium powder added to the suspended slurry, stirring slurry, pre-assembled inorganic fiber sheet honeycomb honeycomb structures immersed, it removed from the slurry, then 100-200 ° C at 1-dry in 2 hours and another 300-550 ° C at 1-4 hours under baking, honeycomb structure, titanium and vanadium oxides and As a shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and-de-NOx catalysts manufactured by research for development.
[0034]
Also zirconium salt water solution Titania particles suspension after dipping and addition of ammonium metavanadate powder and ammonium metatungstate suspended slurry, this slurry, pre-assembled inorganic fiber sheet honeycomb honeycomb structures, which removed from the slurry, 100-200 ° C at 1-dry in 2 hours and another 300-550 ° C in 1-4 hours under baking, honeycomb structure, titanium, vanadium, and tungsten oxides and As a shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and-de-NOx catalysts manufactured by research for development.
[0035]
If the above methods (A), inorganic fiber sheets, glass fiber, or ceramic fiber sheet that is preferred.
[0036]
DeNOx catalyst material honeycomb structure consisting of glass fiber sheets on the other hand, (B) in the above manner, manufacturing method zirconium salt water solution Titania particles suspension immersed the glass fiber sheet in ammonium metavanadate powder added to the suspended slurry, stirring slurry, slurry out of it and then 100-200 ° C at 1-under 2 hours to dry or slurry catalyst coated glass fiber sheets, incidentally, Hold a catalyst containing slurry coating glass fiber sheets and waveform grant mold and shape with a jig, form with the corrugated sheet-like catalysts containing slurry coating glass fiber sheet 100-200 ° C at 1-under the conditions of the two-hour dry, peeling, and from molds on the other hand, not with a corrugated plate-type of catalyst slurry coating glass fiber sheet 100-200 ° C at 1-dry in 2 hours and corrugated sheet-like catalysts containing slurry coating glass fiber sheets and Plate-type catalyst slurry coating glass fiber sheets and 300-550 ° C in 1-by to form a honeycomb catalyst-have formed four hours under baking, as Titania and vanadium oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and impregnated catalyst-swept-back plate glass fiber sheets and corrugated sheets of glass fiber sheet catalyst with firing after catalyst-swept-back plate glass fiber sheets and corrugated sheets of glass fiber sheet catalyst with laminated to In manufacturing the DeNOx catalyst.
[0037]
In addition, zirconium salt water solution Titania particles suspension metavanadate ammonium powder added to the suspended slurry, stirring slurry and added more ammonium metatungstate or its aqueous solution, then this slurry soak glass fiber sheets and this removed from the slurry and then 100-200 ° C at 1-dry in 2 hours or slurry catalyst coated glass fiber sheets, by the way, Hold a catalyst containing slurry coating glass fiber sheets and waveform grant mold and shape with a jig, form with the corrugated sheet-like catalysts containing slurry coating glass fiber sheet 100-200 ° C at 1-under the conditions of the two-hour dry, peeling, and from molds on the other hand, not with a corrugated plate-type of catalyst slurry coating glass fiber sheet 100-200 ° C at 1-dry in 2 hours and corrugated sheet-like catalysts containing slurry coating glass fiber sheets and Plate-type catalyst slurry coating glass fiber sheet and a 300-550 ° C in 1-4 hours under baking, as Titania, vanadium, and tungsten oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and impregnated catalyst-swept-back plate glass fiber sheets and corrugated sheets of glass fiber sheet catalyst with form and, after firing catalyst-supported swept-back plate glass fiber sheets and corrugated sheets of glass fiber sheet catalyst with laminate, In manufacturing by catalyst-loaded with honeycomb structure forming a DeNOx catalyst.
Implementation example

[0038]
Along with comparative examples describing the embodiment of the present invention, the invention is limited to these examples is not.
(Example 1)
DeNOx catalyst of the present invention is then produced. First, 20 weight % zirconium [ZrO (C2H3O2)2] (brand name: when zircosol ZA-20, Daiichi kigenso Kagaku kogyosha made) of aqueous Titania particles suspension suspended slurry (weight ratio of zirconium and titanium; 20: 80) the ammonium metavanadate powder slurry 1 kg per 10 g, and the whole stirred for 1 hour. By firing one hour at 400 ° C even after dipping above slurry, pre-assembled ceramic fiber sheet honeycomb honeycomb structures, which removed from the slurry, dried at 110 ° C for one hour as a honeycomb structure to, titanium and vanadium oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and play got the DeNOx catalyst of the present invention allows research for development.
(Example 2)
DeNOx catalyst of the present invention is then produced. First, 20 weight % zirconium [ZrO (C2H3O2)2] in aqueous solution Titania particles suspended suspended slurry (weight ratio of zirconium and titanium; 20: 80), ammonium metavanadate powder slurry 1 kg per 10 g, and the whole stirred for 1 hour. These slurries, in addition to aqueous solution solution of ammonium (3. 88 mol / l) slurry 28 ml per 1 kg, and the entire 1 hour stirring. After dipping above slurry, pre-assembled ceramic fiber sheet honeycomb honeycomb structures, which removed from the slurry, 110 ° C in dry 1 hour and firing one hour at 400 ° C even in the as a honeycomb structure, Titania, vanadium, and tungsten oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and play got the DeNOx catalyst of the present invention allows research for development.
(Example 3)
DeNOx catalyst of the present invention is then produced. First, 20 weight % zirconium [ZrO (C2H3O2)2] in aqueous solution Titania particles suspension suspended slurry (weight ratio of zirconium and titanium; 20: 80) to slurry 1 kg per 10 g ammonium metavanadate powder added and stirred for 1 hour total. Above slurry further solution aqueous solution of ammonium (3. 88 mol / l) slurry 28 ml per 1 kg, and the entire 1 hour stirring. Got the above slurry coated flat glass fiber sheet, treated with catalysts containing slurry coating glass fiber sheets and then dried at 110 ° C and the baked at 400 ° C for one hour, as Titania, vanadium, and tungsten oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and impregnated catalyst corrugated sheet of glass fiber sheet with. Got to be baked at 400 ° C for one hour, on the other hand, the above slurry coated flat glass fiber sheet and then dried at 110 ° C, as Titania, vanadium, and tungsten oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and impregnated catalyst supported on swept-back plate glass fiber sheet. The above firing after catalyst-swept-back plate glass fiber sheets and corrugated sheets of glass fiber sheet catalyst with corrugated catalyst and catalytic panels to alternately laminated got the DeNOx catalyst of the present invention.
(Example 4)
Instead of zirconium in example 3 zirconium oxychloride [ZrOCl2and H2in similar manner as in example 3 in addition to using the O (brand name: zirconium oxychloride (of 8), "Chemical Corp.), DeNOx catalyst of the present invention.
(Example 5)
Instead of zirconium in example 3 zirconium nitrate [ZrO (NO3)2] (brand name: nitric oxide zirconium (IV), mitsu Japanese chemical Chemical Corp.) in addition to using the same way as in example 3, DeNOx catalyst of the present invention.
(Example 6)
In example 1, 20 WT % zirconium [ZrO (C2H3O2)2] (brand name: when zircosol ZA-20, Daiichi kigenso Kagaku kogyosha made) of aqueous Titania particles suspension got DeNOx catalyst of the present invention a method other than changing the weight ratio of the titanium and zirconium in the slurry was suspended at 5: 80's as well as in example 1,.
Examples (7)
In example 1, 20 weight % zirconium [ZrO (C2H3O2)2] (brand name: when zircosol ZA-20, Daiichi kigenso Kagaku kogyosha made) of aqueous Titania particles suspension weight ratio of the titanium and zirconium in the slurry was suspended for 1. 25: in a way other than changing the 80's as well as in example 1, the DeNOx catalyst of the present invention.
(Comparison example # 1)
For comparison, DeNOx catalyst follows the manufactured. First, to 20 WT % silica Sol Titania particles suspension suspended slurry (weight ratios silica and Titania; 20: 80) to slurry 1 kg per 10 g ammonium metavanadate powder added and stirred for 1 hour total. Can be baked at 400 ° C for one hour, after dipping above slurry, pre-assembled ceramic fiber sheet honeycomb honeycomb structures, which removed from the slurry, dried at 110 ° C for one hour, got de-NOx catalysts for comparison.
(Comparative example 2)
Example 3 baking temperature to 600 ° C in a non-example 3 the same way in, got de-NOx catalysts for comparison. Because, in this case high firing temperature, and honeycomb structure, titanium, vanadium, and tungsten oxide and crystalline zirconium compounds-obtained for the comparison of DeNOx catalyst.
(Evaluation)
Example 1 of the present invention-from each of the 7, and comparative examples 1 and 2, NOx catalyst in zirconium content (measured in terms of oxides of fluorescent x-ray analysis equipment) measured by fluorescent X-ray Analyzer (product name SEA1200VX, made by Seiko Instruments Inc.). In addition each removal NOx catalyst crystal structure analysis using X-ray diffraction analysis system (product name MALTIFLEX, journal Corp.). The results presented in table 1 below.
[0039]
Secondly, example 1 of the present invention-of each of the 7, and comparative examples 1 and 2-NOx catalysts were obtained and measured deNOx performance, according to the following table 1 shows. In addition, each of deNOx performance for NOx catalysts, deNOx performance ratio of deNOx performance of the catalysts of the comparative example 1 displayed.
[0040]
Catalyst for deNOx performance test uses DeNOx catalyst performance tester indicates the flow sheet in Figure 1, where, under the conditions shown in table 2 below. The Balance in the table 2 below refers to the composition of gas in total to 100% to be added, indicate that NO,except for H 2O , NH3gas compositions are occupied by air (see Air in the table).
[0041]
Further, example 1 of the present invention-from each of the 7, and comparative examples 1 and 2 test measurement of NOx catalysts shape retention characteristics off each according to the following table 1 shows results obtained after soaking 1 hour to 1 N NaOH NOx catalyst in catalytic in the conduct.
[0042]
Also, example 1 of the present invention-from each of the 7, and comparative examples 1 and 2 test measurement of wear resistance of NOx catalysts, average grain diameter 84 μm coal-fired boiler ash removal dust concentration 1000 g/h, 1 hr, each according to the following table 1 shows results obtained by measuring the wear depth (mm) mine blew on the SCR catalyst after catalytic.
[0043]
[Table 1]

[0044]
[Table 2]

[0045]
From the above table 1 results is clear example 1 of the present invention-DeNOx catalyst obtained in 7 is alkali treatment (immersed in 1N NaOH), holds forms, also example 1 of the present invention-removal, obtained in 7 NOx catalyst coal-fired catalysts wear depth test boiler ash blew possess adequate wear resistance, so, for example about de-NOx catalysts for NOx exhaust gas and coal-fired boilers, You can possess sufficient mechanical strength can keep the forms in the alkaline action to regenerate deteriorated NOx catalyst performance.
[0046]
DeNOx catalyst in conventional partical applications, on the other hand was in dissolved silica in alkaline treatment, to hold the forms may not.
[0047]
Secondly, example 1 of the present invention DeNOx catalyst and deNOx catalysts of the comparative example 2 x-ray diffraction analysis of the charts showed according to figure 2.
[0048]
From the results shown in Figure 2 for obtains only the peaks because that shape keep binders of zirconium compounds, zirconium compounds (except zirconium dioxide in crystalline) DeNOx catalyst obtained in example 1 of the present invention is clear, be imputed to the anatase TiO2(Titania) is obtained by the comparative example 2 for comparison of de-NOx catalysts, crystalline zirconium oxide in the zirconium compounds as a shape keeping Binder Tetragonal ZrO2 (Zirconia) to peak (2 Theta = 30 near) attribution is given, deNOx performance comparison for the DeNOx catalytic NOx/performance ratio of deNOx performance comparison shown in example 1 of 0. In 7, and inferior deNOx performance.
[0049]
The invention implementation example 2-peak peak DeNOx catalyst obtained in 7 also be imputed to the anatase TiO2(Titania), be imputed to the Tetragonal ZrO2(zirconia) did not respond.
Of the claims

[Paragraph 1]
DeNOx catalyst material honeycomb structure comprising inorganic fiber sheets in as a honeycomb structure, titanium, vanadium oxide and / or tungsten oxide and shape keeping Binder zirconium compounds (except zirconium dioxide in crystalline) and-features that the DeNOx catalysts.
[Paragraph 2]
As shape keep binders of zirconium compounds (except zirconium dioxide in crystalline) catalyst in elemental percentages in oxide equivalent 1-characteristics to 20% by weight, in claim 1 of SCR catalyst.
[Invoice section 3]
By inorganic fiber sheet glass fibers, or ceramic fiber sheet that characterized the claim 1 of SCR catalyst.
[Paragraph 4]
Manufacturing method of honeycomb structure comprising inorganic fiber sheet substrate deNOx catalysts in the zirconium salt water solution Titania nanoparticles suspension manufacturing method of honeycomb structure comprising inorganic fiber sheet obtained were added, and the suspended slurry powder ammonium metavanadate, or ammonium metavanadate powder and ammonium metatungstate powder to slurry and then dipped, it removed from the slurry, dried and characteristics to be fired at or below 550 ° C, de-NOx catalysts.
[Bill 5]
Manufacturing method of honeycomb structure comprising inorganic fiber sheet substrate deNOx catalysts in the zirconium salt water solution Titania particles suspended immersed inorganic fiber sheet obtained were added, and the suspended slurry powder ammonium metavanadate, or ammonium metavanadate powder and ammonium metatungstate powder to slurry, which removed from the slurry, and then dried and the slurry coated inorganic fiber sheet and then DeNOx catalyst features to forms with process catalysts containing fiber sheets of corrugated prepared piece of plate-type catalyst containing fiber sheets obtained from, catalyst content fiber sheets of corrugated and flat and then firing at or below 550 ° C, after firing flat and corrugated baking catalyst content fiber sheets with laminated alternately to form a catalyst-loaded with honeycomb structure and manufacturing method.
[Bill 6]
Firing a 300-feature to do at 550 ° C, claim 4 or 5 in manufacturing method of SCR catalyst.
[Billing paragraph 7]
Features to salt water solution is an aqueous solution of zirconium or zirconium chloride and zirconium, claim 4 or 5 in manufacturing method of SCR catalyst.