CN103894186A - Method for preparing manganese-titanium-series low-temperature denitration catalytic material by acid-soluble titanium slag - Google Patents
Method for preparing manganese-titanium-series low-temperature denitration catalytic material by acid-soluble titanium slag Download PDFInfo
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Abstract
The invention provides a method for preparing a manganese-titanium-series low-temperature denitration catalytic material by acid-soluble titanium slag and belongs to the field of environmental materials, environment catalysis and environmental protection. According to the method, on the basis of a process for producing titanium dioxide by a sulfuric acid method, elements which are good for improving the denitration activity are kept by cutting down a technological flow; the acid-soluble titanium slag is used as a raw material and is subjected to acid hydrolysis to obtain titanium liquid; the titanium liquid is hydrolyzed to generate metatitanic acid; the metatitanic acid is used as a carrier and manganese acetate is added by using a co-precipitation method to prepare the low-temperature denitration catalytic material suitable for a cement kiln. The preparation method of the catalytic material is low in cost and is suitable for industrial production.
Description
Technical field
The invention belongs to environmental catalysis material and field of environment protection, be specially a kind of cement kiln low temperature SCR denitration catalysis material.
Background technology
Nitrogen oxide is the one of the main reasons that causes acid rain, photochemical fog and PM2.5.Nitrogen oxide can produce strong impulse effect to human body respiration organ mucous membrane, and long-term suction may cause lung's structural change, brings very large threat to we are healthy.Along with the steady growth of national economy, the development of the fast manganese of domestic cement industry, cement output is risen to 21.8 hundred million t of 2012 by 10.6 hundred million t of 2006, average annual growth rate more than 10%, cement industry NO simultaneously
xa large amount of discharges also brought huge load to environment.Cement industry NO
xdischarge accounts for national industrial NO
x10%～12% of discharge, its discharge capacity is only second to coal-burning power plant and motor vehicle exhaust emission.Therefore, country has clearly specified cement industry NO in " energy-saving and emission-reduction " 12 " planning "
xthe binding indicator of the atmosphere pollution of discharge, requires cement industry NO in 2015
xon basis, cut down 12% in 2010, be controlled at 1,500,000 t.
SCR (Selective Catalytic Reduction, SCR) is current most important a kind of denitration method for flue gas.It is done catalysis and selects to absorb taking ammoniacal liquor or urea as denitrfying agent under catalysis material effect in absorption tower, denitration rate can reach 85%～95%.The business SCR catalysis material of denitrating flue gas consist of V
2o
5(WO
3)/TiO
2(anatase), its running temperature, generally at 350～400 DEG C, is difficult in smoke processing system end use application, and installation and operation expense is higher.
The feature of the flue gas of cement kiln discharge is: flue-gas temperature is about 300 DEG C, and dust concentration is high.If directly flue gas is carried out to denitration, the dust in flue gas can stop up the active hole of catalysis material, causes catalysis material inactivation.Therefore for extend catalysis material life-span and after SCR is placed in to desulfation dust-extraction device, but after desulfurization and dedusting, flue-gas temperature is generally all lower than 200 DEG C, just must carry out Repeat-heating to flue gas, this will consume more resources, increases denitration cost.Therefore, exploitation low-temperature SCR catalysis material and technique are very necessary.
SCR is the denitration technology of mainly applying in the world at present.This technological core is catalysis material, and its cost accounts for overall cost 30%～50%; Investment, the maintenance cost of this technology are all higher.At present, SCR technology at home cement industry not yet drop into.Therefore research and development have good low temperature active, efficient, low cost catalysis material is the key of breaking this bottleneck, have also responded current NO
xthe reduction of discharging policy of compound, is significant to Chinese national economy high speed development and green improvement of the ecological environment.
Based on denitration low temperature active and the TiO of Mn oxide excellence
2the stability of carrier, prepares manganese titanium system catalysis material both at home and abroad and substantially all uses titanium white for raw material, and adds the auxiliary agents such as Fe to improve denitration activity.China produces titanium white mainly taking sulfuric acid process as main, and raw material is ilmenite, containing elements such as Ti, Fe, Si, Al, Mn, V.Production By Sulfuric Acid Process titanium white master operation has: acidolysis slaking, leaching reduction, the sedimentation of titanium liquid, freezing and crystallizing centrifugation, controlled filtration, evaporation and concentration, hydrolysis, the evolution (rinsing and bleaching) of metatitanic acid, salt processing, calcining, pulverizing.The process of Production By Sulfuric Acid Process titanium white is prepared the inverse process of manganese titanium system catalysis material just.
It is raw material that the present invention selects acid-dissolved titanium slag, acid-dissolved titanium slag by ilmenite concentrate through electric furnace reduction melting gained, TiO
2grade is about 75%, is suitable for sulfuric acid process and produces titanium white.Ilmenite relatively, acid-dissolved titanium slag has not only saved freezing iron removal step in industrial application, can not produce ferrous sulfate, can not build ferrous storage, can also save construction investment.Because the content of acid-dissolved titanium slag middle or low price titanium is higher, in leaching process, do not need to add iron powder or iron filings to reduce simultaneously.Owing to using, acid-dissolved titanium slag consumption is few, and refuse amount reduces, and can realize the target of reduction of discharging.And acid titanium slag stable components, is also suitable as the raw material of denitration catalyst material.
We do not wish impurity to eliminate in the present invention, thus plate compression, evaporating concentration process are saved, and save the step of pulverizing-calcining-salt processing-rinsing-bleaching, at hydrolysate metatitanic acid (TiO
2xSO
3yH
2o) on basis, prepare denitration catalyst material.
Summary of the invention
The present invention is on the basis of Production By Sulfuric Acid Process titanium white technique, cut down technological process to remain with the element that helps improve denitration activity, taking acid-dissolved titanium slag as raw material, acidolysis obtains titanium liquid, titanium hydrolysis generates metatitanic acid, taking metatitanic acid as carrier, preparation is applicable to the preparation method of the low-temperature denitration catalysis material of cement kiln.
Acid-dissolved titanium slag is prepared the method that manganese titanium is low-temperature denitration catalysis material, comprises the following steps:
The first step, it is 98% sulfuric acid that acid-dissolved titanium slag adds mass percent concentration by solid-liquid mass ratio 1:1.8～3.0,200～220 DEG C of reaction 4～8h in closed container;
Second step, is 5%～10% sulfuric acid to leach by the acid hydrolysate of the first step water or mass percent concentration under 60～80 DEG C of water-baths, magnetic agitation 2～3h; Centrifugal, isolate top titanium liquid, remove bottom residues;
The 3rd step, is preheating to 96 DEG C by isolated second step titanium liquid, then is added in 96 DEG C of water,, titanium liquid is 4:1 with water quality ratio; Solution is warming up to boiling; Solution becomes olive-green from black, while then becoming steel grey again, stops heating and stirs; After 45min, again heat, stir, arrive boiling, and keep boiling 3h, be diluted with water, then stir after 10～30min cooling;
The 4th step, after the reactant mixture of the 3rd step is cooling, centrifugal, washing obtains metatitanic acid; Metatitanic acid is dried to 10～15h in 80～120 DEG C;
The 5th step, metatitanic acid is water-soluble, mix magnetic agitation 20～30min with manganese acetate solution;
The 6th step, by 80～95 DEG C of water-baths of the mixed solution of the 5th step, adds 2mol/L urea liquid, magnetic agitation 30min; Add ammoniacal liquor, to pH=10～11; Drip hydrogen peroxide, cooling after magnetic agitation 30min; Wherein metatitanic acid: urea: ammoniacal liquor: the mol ratio of hydrogen peroxide is 1:0.5～2:0.5～2:0.8～1.2;
The 7th step, centrifugation goes out bottom precipitation, washing, alcohol wash; 75～100 DEG C of dry 10～15h; 450 DEG C of roasting 3h make catalysis material powder.
Denitration rate of the present invention test is with NH
3during for reducing gas, by the NO of 1000ppm, the NH of 1000ppm
3, 5% O
2mix, carrier gas is all N
2, gas flow rate 2000ml/min, reaction velocity is 27000h
-1.Catalysis material powder, through granulation, is got 40-60 object particle, measures 3ml, and reaction is under 90 DEG C～350 DEG C temperature conditions, and catalytic material catalyzes transformation efficiency of the oxides of nitrogen prepared by the present invention can reach 99%.
Preferably, the particle diameter of the raw material acid-dissolved titanium slag in described step 1 is 150～170 orders.
Preferably, in described step 1, reaction temperature is 220 DEG C.
Preferably, the sulfuric acid to leach that is 10% with mass percent concentration under 80 DEG C of water-baths in described step 2.
Preferably, the speed in described step 3, titanium liquid being added to the water is 10g/min～20g/min.
Detailed description of the invention
In examples of implementation, the particle diameter of acid-dissolved titanium slag is 150～170 orders.The speed in the 3rd step, titanium liquid being added to the water is 10g/min～20g/min.But be not limited to above-mentioned feature.
Embodiment mono-:
The first step, it is 98% sulfuric acid 90g that 50g acid-dissolved titanium slag adds mass percent concentration by solid-liquid mass ratio 1:1.8,200 DEG C of reaction 4h in closed container.
Second step is used 200ml water extraction, magnetic agitation 2h by the acid hydrolysate of the first step under 60 DEG C of water-baths.Centrifugal, isolate top titanium liquid, remove bottom residues.
The 3rd step, titanium liquid is 4:1 with water quality ratio.Isolated second step titanium liquid 130g is preheating to 96 DEG C, and 15min is added to titanium liquid in 33g96 DEG C of water.Solution is warming up to boiling.Solution becomes olive-green from black, while then becoming steel grey again, stops heating and stirs.After 45min, again heat, stir, arrive boiling, and keep boiling 3h, be diluted with water, then stir after 10min cooling.
The 4th step, after the reactant mixture of the 3rd step is cooling, centrifugal.
The 5th step, is dissolved in 100ml water by metatitanic acid and 8.0g manganese acetate, and 60 DEG C mix, magnetic agitation 30min.
The 6th step, by 80 DEG C of water-baths of the mixed solution of the 5th step, adds 2mol/L urea liquid 50ml, magnetic agitation 30min.Add ammoniacal liquor 50g, hydrogen peroxide 50g, cooling after magnetic agitation 30min.
The 7th step, centrifugation goes out bottom precipitation, washes alcohol wash 2 times 3 times.75 DEG C of dry 15h.450 DEG C of roasting 3h make catalysis material powder.
Denitration rate test: with NH
3during for reducing gas, by the NO of 1000ppm, the NH of 1000ppm
3, 5% O
2mix, carrier gas is all N
2, gas flow rate 2000ml/min, reaction velocity is 27000h
-1.Catalysis material powder, through granulation, is got 40-60 object particle, measures 3ml, and reaction is under 90 DEG C～350 DEG C temperature conditions, and denitration rate is up to 92%.
Embodiment bis-:
The first step, it is 98% sulfuric acid 120g that 50g acid-dissolved titanium slag adds mass percent concentration by solid-liquid mass ratio 1:2.4,220 DEG C of reaction 6h in closed container.
Second step is 5% sulfuric acid 200ml leaching with mass percent concentration by the acid hydrolysate of the first step under 60 DEG C of water-baths, magnetic agitation 3h.Centrifugal, isolate top titanium liquid, remove bottom residues.
The 3rd step, titanium liquid is 4:1 with water quality ratio.Isolated second step titanium liquid 300g is preheating to 96 DEG C, then is added in 75g96 DEG C of water.Solution is warming up to boiling, 108 DEG C of boiling temperatures.Solution becomes olive-green from black, while then becoming steel grey again, stops heating and stirs.After 45min, again heat, stir, arrive boiling, and keep boiling 3h, add 100ml water dilution, then stir after 20min cooling.
The 4th step, after the reactant mixture of the 3rd step is cooling, centrifugal.
The 5th step, is dissolved in 100ml water by metatitanic acid and 2.0g manganese acetate, and 60 DEG C mix, magnetic agitation 30min.
The 6th step, by 95 DEG C of water-baths of the mixed solution of the 5th step, adds 2mol/L urea liquid 20ml, magnetic agitation 30min.Add ammoniacal liquor 20g, drip hydrogen peroxide 15g, cooling after magnetic agitation 20min.
The 7th step, centrifugation goes out bottom precipitation, washes alcohol wash 2 times 3 times.90 DEG C of dry 14h.450 DEG C of roasting 3h make catalysis material powder.
Denitration rate test: with NH
3during for reducing gas, by the NO of 1000ppm, the NH of 1000ppm
3, 5% O
2mix, carrier gas is all N
2, gas flow rate 2000ml/min, reaction velocity is 27000h
-1.Catalysis material powder, through granulation, is got 40-60 object particle, measures 3ml, and reaction is under 90 DEG C～350 DEG C temperature conditions, and denitration rate is up to 98%.
Embodiment tri-:
The first step, it is 98% sulfuric acid 150g that 50g acid-dissolved titanium slag adds mass percent concentration by solid-liquid mass ratio 1:3,220 DEG C of reaction 5h in closed container.
Second step is 10% sulfuric acid 400ml leaching with mass percent concentration by the acid hydrolysate of the first step under 80 DEG C of water-baths, magnetic agitation 2h.Centrifugal, isolate top titanium liquid, remove bottom residues.
The 3rd step, titanium liquid is 4:1 with water quality ratio.Isolated second step titanium liquid 400g is preheating to 96 DEG C, and 23min is added to titanium liquid in 100g96 DEG C of water.Solution is warming up to boiling.Solution becomes olive-green from black, while then becoming steel grey again, stops heating and stirs.After 45min, again heat, stir, arrive boiling, and keep boiling 3h, add 100ml water dilution, then stir after 30min cooling.
The 4th step, after the reactant mixture of the 3rd step is cooling, centrifugal, washing.By washing after metatitanic acid in 100 DEG C of dry 15h.After cooling, XRF detects, wherein TiO
287.84%, SO
311.70%, SiO
20.11%, Fe
2o
30.11%, MgO0.09%, Al
2o
30.07%, CaO0.06%, NbO0.02%.
The 5th step, is dissolved in 100ml water by 5g metatitanic acid and 5.44g manganese acetate, and 60 DEG C mix, magnetic agitation 30min.
The 6th step, by 95 DEG C of water-baths of the mixed solution of the 5th step, adds 2mol/L urea liquid 25ml, magnetic agitation 30min.Add ammoniacal liquor 25g, to pH=10～11.Drip hydrogen peroxide 25g, cooling after magnetic agitation 20min.
The 7th step, centrifugation goes out bottom precipitation, washes alcohol wash 2 times 3 times.100 DEG C of dry 15h.450 DEG C of roasting 3h make catalysis material powder.
Denitration rate test: with NH
3during for reducing gas, by the NO of 1000ppm, the NH of 1000ppm
3, 5% O
2mix, carrier gas is all N
2, gas flow rate 2000ml/min, reaction velocity is 27000h
-1.Catalysis material powder, through granulation, is got 40-60 object particle, measures 3ml, and reaction is under 90 DEG C～350 DEG C temperature conditions, and denitration rate is up to 98%.
Embodiment tetra-:
The first step, it is 98% sulfuric acid 150g that 50g acid-dissolved titanium slag adds mass percent concentration by solid-liquid mass ratio 1:3,220 DEG C of reaction 7h in closed container.
Second step is 10% sulfuric acid 400ml leaching with mass percent concentration by the acid hydrolysate of the first step under 60 DEG C of water-baths, magnetic agitation 3h.Centrifugal, isolate top titanium liquid, remove bottom residues.
The 3rd step, titanium liquid is 4:1 with water quality ratio.Isolated second step titanium liquid 400g is preheating to 96 DEG C, and 20min is added to titanium liquid in 100g96 DEG C of water.Solution is warming up to boiling, 108 DEG C of boiling temperatures.Solution becomes olive-green from black, while then becoming steel grey again, stops heating and stirs.After 45min, again heat, stir, arrive boiling, and keep boiling 3h, add 200ml water dilution, then stir after 30min cooling.
The 4th step, after the reactant mixture of the 3rd step is cooling, centrifugal, washing.By washing after metatitanic acid in 100 DEG C of dry 13h.After cooling, XRF detects, wherein TiO
285.75%, SO
313.97%, SiO
20.11%, Fe
2o
30.11%, CaO0.06%.
The 5th step, is dissolved in 100ml water by 6g metatitanic acid and 6.37g manganese acetate, and 60 DEG C mix, magnetic agitation 30min.
The 6th step, by 95 DEG C of water-baths of the mixed solution of the 5th step, adds 2mol/L urea liquid 40ml, magnetic agitation 30min.Add ammoniacal liquor, to pH=10.Drip hydrogen peroxide 10g, cooling after magnetic agitation 30min.
The 7th step, centrifugation goes out bottom precipitation, washes alcohol wash 2 times 3 times.100 DEG C of dry 10h.450 DEG C of roasting 3h make catalysis material powder.
Denitration rate test: with NH
3during for reducing gas, by the NO of 1000ppm, the NH of 1000ppm
3, 5% O
2mix, carrier gas is all N
2, gas flow rate 2000ml/min, reaction velocity is 27000h
-1.Catalysis material powder, through granulation, is got 40-60 object particle, measures 3ml, and reaction is under 90 DEG C～350 DEG C temperature conditions, and denitration rate is up to 99%, 150 DEG C of denitration rate can reach 90%.
Embodiment five:
The first step, it is 98% sulfuric acid 150g that 50g acid-dissolved titanium slag adds mass percent concentration by solid-liquid mass ratio 1:3,220 DEG C of reaction 8h in closed container.
Second step is 10% sulfuric acid 300ml leaching with mass percent concentration by the acid hydrolysate of the first step under 80 DEG C of water-baths, magnetic agitation 3h.Centrifugal, isolate top titanium liquid, remove bottom residues.
The 3rd step, titanium liquid is 4:1 with water quality ratio.Isolated second step titanium liquid 450g is preheating to 96 DEG C, and 30min is added to titanium liquid in 120g96 DEG C of water.Solution is warming up to boiling, 108 DEG C of boiling temperatures.Solution becomes olive-green from black, while then becoming steel grey again, stops heating and stirs.After 45min, again heat, stir, arrive boiling, and keep boiling 3h, add 200ml water dilution, then stir after 30min cooling.
The 4th step, after the reactant mixture of the 3rd step is cooling, centrifugal, washing.By washing after metatitanic acid in 100 DEG C of dry 12h.After cooling, XRF detects, wherein TiO
287.67%, SO
312.04%, MgO0.09%, Fe
2o
30.08%, CaO0.05%, SiO
20.04%.
The 5th step, is dissolved in 200ml water by 10g metatitanic acid and 10.80g manganese acetate, and 60 DEG C mix, magnetic agitation 30min.
The 6th step, by 95 DEG C of water-baths of the mixed solution of the 5th step, adds 2mol/L urea liquid 50ml, magnetic agitation 30min.Add ammoniacal liquor 50g, to pH=10.Drip hydrogen peroxide 40g, cooling after magnetic agitation 30min.
The 7th step, centrifugation goes out bottom precipitation, washes alcohol wash 2 times 3 times.100 DEG C of dry 15h.450 DEG C of roasting 3h make catalysis material powder.
Denitration rate test: with NH
3during for reducing gas, by the NO of 1000ppm, the NH of 1000ppm
3, 5% O
2mix, carrier gas is all N
2, gas flow rate 2000ml/min, reaction velocity is 27000h
-1.Catalysis material powder, through granulation, is got 40-60 object particle, measures 3ml, and reaction is under 90 DEG C～350 DEG C temperature conditions, and denitration rate is up to 99.7%, 140 DEG C of denitration rate can reach 92%.
Claims (5)
1. acid-dissolved titanium slag is prepared the method that manganese titanium is low-temperature denitration catalysis material, it is characterized in that comprising the following steps:
The first step, it is 98% sulfuric acid that acid-dissolved titanium slag adds mass percent concentration by solid-liquid mass ratio 1:1.8～3.0,200～220 DEG C of reaction 4～8h in closed container;
Second step, is 5%～10% sulfuric acid to leach by the acid hydrolysate of the first step water or mass percent concentration under 60～80 DEG C of water-baths, magnetic agitation 2～3h; Centrifugal, isolate top titanium liquid, remove bottom residues;
Isolated second step titanium liquid is preheating to 96 DEG C by the 3rd step, then be added in 96 DEG C of water, and titanium liquid is 4:1 with water quality ratio; Solution is warming up to boiling; Solution becomes olive-green from black, while then becoming steel grey again, stops heating and stirs; After 45min, again heat, stir, arrive boiling, and keep boiling 3h, be diluted with water, then stir after 10～30min cooling;
The 4th step, after the reactant mixture of the 3rd step is cooling, centrifugal, washing obtains metatitanic acid; Metatitanic acid is dried to 10～15h in 80～120 DEG C;
The 5th step, metatitanic acid is water-soluble, mix magnetic agitation 20～30min with manganese acetate solution;
The 6th step, by 80～95 DEG C of water-baths of the mixed solution of the 5th step, adds 2mol/L urea liquid, magnetic agitation 30min; Add ammoniacal liquor, to pH=10～11; Drip hydrogen peroxide, cooling after magnetic agitation 30min; Wherein metatitanic acid: urea: ammoniacal liquor: the mol ratio of hydrogen peroxide is 1:0.5～2:0.5～2:0.8～1.2;
The 7th step, centrifugation goes out bottom precipitation, washing, alcohol wash; 75～100 DEG C of dry 10～15h; 450 DEG C of roasting 3h make catalysis material powder.
2. method according to claim 1, is characterized in that: the particle diameter of described step 1 Raw acid-dissolved titanium slag is 150～170 orders.
3. method according to claim 1, is characterized in that: in described step 1, reaction temperature is 220 DEG C.
4. method according to claim 1, is characterized in that: the sulfuric acid to leach that is 10% with mass percent concentration under 80 DEG C of water-baths in described step 2.
5. method according to claim 1, is characterized in that: the speed in described step 3, titanium liquid being added to the water is 10g/min～20g/min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258872A (en) * | 2014-09-21 | 2015-01-07 | 北京工业大学 | Preparation method of denitration catalytic material of low-temperature wide-active-temperature-range window |
| CN105217664A (en) * | 2015-09-15 | 2016-01-06 | 中国科学院过程工程研究所 | A kind of titanium-containing blast furnace slag spent acid treatment and utilization method |
| CN106944040A (en) * | 2017-03-14 | 2017-07-14 | 上海大学 | Utilize the method that catalyst for purification of nitrogen oxides is prepared containing Titanium slag and containing manganese mud |
| CN107519862A (en) * | 2017-08-23 | 2017-12-29 | 北京工业大学 | A kind of method that ferro-silicon slag prepares medium temperature denitration catalyst material |
| CN108993529A (en) * | 2018-07-26 | 2018-12-14 | 北京工业大学 | A method of improving Industrial Stoves low-temperature denitration catalysis material catalytic activity using tourmaline |
| CN112058271A (en) * | 2020-06-28 | 2020-12-11 | 重庆大学 | Method for preparing SCR (selective catalytic reduction) low-temperature flue gas denitration catalyst by acid-modified low-titanium blast furnace slag |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100005963A1 (en) * | 2007-01-29 | 2010-01-14 | University Of Nottingham | Sorbent composition |
| CN201912940U (en) * | 2010-12-27 | 2011-08-03 | 北京工业大学 | Dust adhesion preventive packing denitration catalyzing ball |
| US20120184429A1 (en) * | 2010-03-11 | 2012-07-19 | Johnson Matthey Public Limited Company | DISORDERED MOLECULAR SIEVE SUPPORTS FOR THE SELECTIVE CATALYTIC REDUCTION OF NOx |
| CN103240081A (en) * | 2013-05-01 | 2013-08-14 | 北京工业大学 | Manganese-based low-temperature denitration catalyst taking TiO2-SiO2 as carrier and preparation method thereof |
| CN103263913A (en) * | 2013-04-27 | 2013-08-28 | 北京工业大学 | Preparation method for high-specific surface anti-alkalosis denitration catalyst applicable to cement kiln |
-
2014
- 2014-03-29 CN CN201410130839.7A patent/CN103894186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100005963A1 (en) * | 2007-01-29 | 2010-01-14 | University Of Nottingham | Sorbent composition |
| US20120184429A1 (en) * | 2010-03-11 | 2012-07-19 | Johnson Matthey Public Limited Company | DISORDERED MOLECULAR SIEVE SUPPORTS FOR THE SELECTIVE CATALYTIC REDUCTION OF NOx |
| CN201912940U (en) * | 2010-12-27 | 2011-08-03 | 北京工业大学 | Dust adhesion preventive packing denitration catalyzing ball |
| CN103263913A (en) * | 2013-04-27 | 2013-08-28 | 北京工业大学 | Preparation method for high-specific surface anti-alkalosis denitration catalyst applicable to cement kiln |
| CN103240081A (en) * | 2013-05-01 | 2013-08-14 | 北京工业大学 | Manganese-based low-temperature denitration catalyst taking TiO2-SiO2 as carrier and preparation method thereof |
Cited By (8)
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|---|---|---|---|---|
| CN104258872A (en) * | 2014-09-21 | 2015-01-07 | 北京工业大学 | Preparation method of denitration catalytic material of low-temperature wide-active-temperature-range window |
| CN105217664A (en) * | 2015-09-15 | 2016-01-06 | 中国科学院过程工程研究所 | A kind of titanium-containing blast furnace slag spent acid treatment and utilization method |
| CN106944040A (en) * | 2017-03-14 | 2017-07-14 | 上海大学 | Utilize the method that catalyst for purification of nitrogen oxides is prepared containing Titanium slag and containing manganese mud |
| CN106944040B (en) * | 2017-03-14 | 2019-07-23 | 上海大学 | Using containing Titanium slag and the method for preparing catalyst for purification of nitrogen oxides containing manganese mud |
| CN107519862A (en) * | 2017-08-23 | 2017-12-29 | 北京工业大学 | A kind of method that ferro-silicon slag prepares medium temperature denitration catalyst material |
| CN107519862B (en) * | 2017-08-23 | 2020-02-04 | 北京工业大学 | Method for preparing medium-temperature denitration catalytic material from ferrosilicon slag |
| CN108993529A (en) * | 2018-07-26 | 2018-12-14 | 北京工业大学 | A method of improving Industrial Stoves low-temperature denitration catalysis material catalytic activity using tourmaline |
| CN112058271A (en) * | 2020-06-28 | 2020-12-11 | 重庆大学 | Method for preparing SCR (selective catalytic reduction) low-temperature flue gas denitration catalyst by acid-modified low-titanium blast furnace slag |
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