CN104973623A - Method for preparing pigment by utilizing waste flue gas denitrification catalyst - Google Patents
Method for preparing pigment by utilizing waste flue gas denitrification catalyst Download PDFInfo
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Abstract
The invention relates to a method for preparing pigment by utilizing a waste flue gas denitrification catalyst. The method comprises the following steps of: crushing the waste flue gas denitrification catalyst by a crusher, adding a metal oxide stabilizer and a metal oxide developing agent into the crushed waste flue gas denitrification catalyst to uniformly mix; and grinding the uniformly-mixed raw materials into powder particles by a ball mill, then, putting the powder particles into an industrial roasting furnace, heating the powder particles to 800 DEG C at certain heating rate to generate combustion reaction , preserving the temperature for 8-16 hours at 1000 DEG C in the roasting furnace, and naturally cooling and grinding the powder particles to prepare the pigment. The pigment prepared by the method disclosed by the invention is stable in property, relatively good in heat resistance, light resistance, weather resistance, acid resistance, and alkali resistance. The method disclosed by the invention is simple, and used equipment is few and uncomplicated in structure, so that innocent treatment and resource utilization of the waste flue gas denitrification catalyst can be realized, and the popularization is convenient.
Description
Technical field
The invention belongs to solid waste and reclaim field, be specifically related to a kind of method utilizing discarded catalyst for denitrating flue gas to prepare pigment.
Background technology
The titanium system mineral dye such as titanium nickel yellow, titanium chrome yellow, cobalt titanate green, titanium manganese brown is all with TiO
2for the mixed phase pigment of the doped metal ion of main component, this kind of pigment owing to having excellent weather resistance, high, the safety non-toxic of thermotolerance, to human body and environmentally friendly, also there is the performance of reflected infrared, therefore become a kind of important inorganic color(ed)pigment.Due to titanium system mineral dye to human body and ecology harmless, in the past few decades, the development in titanium system mineral dye market remains very high speed.
At present, catalyst for denitrating flue gas is take titanium dioxide as carrier substantially, and with the oxide compound of vanadium, tungsten etc. for active substance, content of titanium dioxide wherein can reach more than 80%.In the use procedure of denitrating catalyst, catalyzer can adsorb basic metal in coal ash, heavy metal and losing activity gradually because having micropore, can cause the heavy metal containing trace in discarded catalyst for denitrating flue gas and micro-poisonous substance matter Vanadium Pentoxide in FLAKES, therefore discarded catalyst for denitrating flue gas is classified as danger wastes by environmental administration.Relevant department predicts, the discarded catalyst for denitrating flue gas that following China will produce nearly 40,000 tons every year.Landfill after current domestic processing mode mostly is and pulverizes, except causing the wasting of resources, the mishandling pollution that also can bring environment.
Through retrieval, publication number is that the application for a patent for invention of CN 104071832A relates to a kind of method extracting metal oxide from waste denitration catalyst, and waste denitration catalyst is reclaimed metal oxide wherein by the process such as acid-soluble, washing, calcining, chemical precipitation, filtration after high-temperature calcination, alkali fusion.This application is to reclaim for the purpose of the oxide compound in catalyzer, but gained oxide compound purity is limited, and therefore value-added content of product and recovery economy are restricted.There is not been reported to utilize waste denitration catalyst to prepare the method for pigment.
Summary of the invention
The object of the invention is to: provide a kind of method that method is simple, the discarded catalyst for denitrating flue gas of utilization prepares pigment, the method can realize harmless treatment and the recycling of waste denitration catalyst.
For achieving the above object, the present invention is by the following technical solutions:
Utilize discarded catalyst for denitrating flue gas to prepare a method for pigment, comprise the following steps:
1) with crusher, discarded catalyst for denitrating flue gas is broken into the catalyzer coarse particles of 5-30mm;
2) in catalyzer coarse particles, add metal oxide stability agent and metal oxide developer, and mix;
3) with ball mill, the pigment crude grinding after mixing is made the powder particle of less than 100 μm;
4) described powder particle is added in industrial stoving oven, stop heating after being warming up to 800 DEG C with the temperature rise rate of 5-50 DEG C/min, make powder particle that combustion reactions occur at this temperature and no longer rise to roasting in-furnace temperature;
5) continue to be heated to roasting in-furnace temperature and reach 1000 DEG C, insulation 8-16h, naturally cooling obtains colored solid particle;
6) by gained colored solid particulate abrasive to particle diameter less than 2 μm, i.e. obtained pigment.
The pigment that described step 6) obtains is titanium nickel yellow, titanium chrome yellow, cobalt titanate green, titanium manganese brown titanium system mineral dye.
Described metal oxide stability agent is the mixture of one or more in the oxide compound of antimony, or the mixture of one or more of antimony metal salt compound, or the mixture of antimony metal oxide compound and antimony metal salt compound.
Described metal oxide stability agent is the mixture of one or more in antimony peroxide, antimonous oxide.
Described metal oxide developer is the mixture of one or more metal oxides in nickel, manganese, chromium, cobalt, or nickel, manganese, chromium, cobalt metal salt compound the mixture of one or more, or the mixture of nickel, manganese, chromium, cobalt metal oxide and its metal salt compound.
Described metal oxide developer is the mixture of one or more in nickel oxide, manganese oxide, chromic oxide, cobalt oxide.
The weight percent of described discarded denitration smoke catalytic agent coarse particles, metal oxide stability agent and metal oxide developer is respectively 80-90%, 5-18% and 2-10%.
The present invention utilizes the titanium dioxide in waste denitration catalyst, and mainly preparation is titanium system mineral dye, as titanium nickel yellow, titanium chrome yellow, cobalt titanate green, titanium manganese brown etc.
preparation principle of the present invention
After adding positively charged ion in titanium dioxide of the present invention, at high temperature metal ion developer infiltration is solidly soluted into TiO
2in lattice, becoming a kind of monomeric substance, is no longer the mechanically mixing of each component.TiO
2properties such as chemical stability substantially determined by matrix lattice; On the other hand, the oxide compound of the metal ion produced then loses its chemical property, physical properties and physiological property completely, because these oxide compounds exist no longer in the form of the oxide in mixed phase pigment.The color of metal oxides inorganic pigment depends on the transition at the esoteric electron energy of crystalline substance, thus changes absorption spectrum; Also the various cationic particular combination existed in this crystal structure oxide is depended on.Titanium dioxide itself can as the raw material preparing mineral dye, and the content in denitrating catalyst can reach more than 80%, therefore that waste denitration catalyst is feasible as the alternative materials of titanium system mineral dye.
By adding the metal developers such as nickel, manganese, chromium, cobalt in waste denitration catalyst, replace rutile TiO
2crystalline structure in part be positioned at the Ti of coordination center
4+ion, makes the valence state of central ion change, and then changes the absorbing wavelength of waste denitration catalyst, the color of denitrating catalyst is changed, adds metal oxide stability agent and the change of this crystalline structure can be made to tend towards stability.
beneficial effect of the present invention
The invention provides a kind of method utilizing discarded catalyst for denitrating flue gas to prepare pigment, preparation process is at high temperature carried out, the toxicity of the toxic metal oxide compound contained in waste denitration catalyst can be eliminated through high-temperature fusion, reach the object of Hazardous wastes harmless treatment recycling.
The object that the present invention adds metal oxide stability agent is to keep the stable of metal oxide pigment lattice, and the object adding metal oxide developer is as metal oxide pigment is painted; The inventive method is simple, and use equipment is few and structure is uncomplicated, can realize harmless treatment and the recycling of waste denitration catalyst.As can be seen from embodiment, the pigment property that the present invention obtains is stablized, and thermotolerance, photostabilization, weathering resistance, acid resistance, alkali resistance are all relatively good, suitable popularization.
Embodiment
Below in conjunction with embodiment, the present invention is described further, but protection scope of the present invention is not limited in this.
embodiment 1utilize discarded catalyst for denitrating flue gas to prepare a method for pigment, comprise the following steps:
With jaw crusher, honeycomb fashion waste denitration catalyst is broken into the catalyzer coarse particles of 30mm; At 90%(weight percent) catalyzer coarse particles in add 5%(weight percent) antimony peroxide and 5%(weight percent) nickel oxide, mix; With ball mill, the raw mill after mixing is made 200 orders (particle diameter 74 μm) powder particle below; Powder particle being put into drum-type industry stoving oven, stop heating after being warming up to 800 DEG C with the temperature rise rate of 20 DEG C/min, there is combustion reactions to roasting in-furnace temperature and reaches 980 DEG C and no longer rise in powder particle at this temperature; Continue to be heated to roasting in-furnace temperature and reach 1000 DEG C, insulation 12h, naturally cooling, obtains yellow solid particle; Gained yellow solid particle Raymond mill is ground to particle diameter less than 1.5 μm, i.e. obtained titanium nickel yellow pigment.
The fundamental characteristics of gained titanium nickel yellow pigment is in table 1.
The fundamental characteristics of table 1 gained titanium nickel yellow pigment
| Characteristic | Unit | Detected value |
| Crystalline structure | / | Rutile-type |
| Median | μm | 1.2 |
| Density | g/cm 3 | 4.4 |
| Thermotolerance | ℃ | 1000 |
| Photostabilization | Level | 8 |
| Weathering resistance | Level | 5 |
| Acid resistance | Level | 5 |
| Alkali resistance | Level | 5 |
| Water content | % | 0.1 |
| Oil number | % | 18% |
| pH | / | 7.2 |
embodiment 2utilize discarded catalyst for denitrating flue gas to prepare a method for pigment, comprise the following steps:
By waste denitration catalyst (flat) stripping metal net, fragmentation obtains the catalyzer coarse particles of about 5mm; At 80%(weight percent) catalyzer coarse particles in add 18%(weight percent) antimonous oxide and containing 2%(weight percent) nickelous nitrate of nickel oxide, mix; With ball mill, the raw mill after mixing is made 200 orders (particle diameter 74 μm) powder particle below; Described powder particle being put into drum-type industry stoving oven, stop heating after being warming up to 800 DEG C with the temperature rise rate of 10 DEG C/min, there is combustion reactions to roasting in-furnace temperature and reaches 940 DEG C and no longer rise in powder particle at this temperature; Continue to be heated to roasting in-furnace temperature and reach 1000 DEG C, insulation 16h, naturally cooling obtains yellow solid particle; Gained yellow solid particle jet mill is crushed to particle diameter less than 1.2 μm, i.e. obtained titanium nickel yellow pigment.
Gained titanium nickel yellow pigment fundamental characteristics is in table 2.
The fundamental characteristics of table 2 gained titanium nickel yellow pigment
| Characteristic | Unit | Detected value |
| Crystalline structure | / | Rutile-type |
| Median | μm | 1.0 |
| Density | g/cm 3 | 4.3 |
| Thermotolerance | ℃ | 1000 |
| Photostabilization | Level | 8 |
| Weathering resistance | Level | 5 |
| Acid resistance | Level | 5 |
| Alkali resistance | Level | 5 |
| Water content | % | 0.1 |
| Oil number | % | 19% |
| pH | / | 7.0 |
embodiment 3utilize discarded catalyst for denitrating flue gas to prepare a method for pigment, comprise the following steps:
With jaw crusher, honeycomb fashion waste denitration catalyst is broken into the catalyzer coarse particles of about 20mm; At 85%(weight percent) catalyzer coarse particles in add 10%(weight percent) antimony peroxide and 5%(weight percent) manganese oxide, mix; With ball mill, the raw mill after mixing is made 200 orders (particle diameter 74 μm) powder particle below; Described powder particle being put into drum-type industry stoving oven, stop heating after being warming up to 800 DEG C with the temperature rise rate of 20 DEG C/min, there is combustion reactions to roasting in-furnace temperature and reaches 900 DEG C and no longer rise in powder particle at this temperature; Continue to be heated to roasting in-furnace temperature and reach 1000 DEG C, insulation 10h, naturally cooling obtains brown solid particle; Gained brown solid particle Raymond mill is ground to particle diameter less than 1.5 μm, i.e. obtained titanium manganese brown pigment.
The fundamental characteristics of gained titanium manganese brown pigment is in table 3.
The fundamental characteristics of table 3 gained titanium manganese brown pigment
| Characteristic | Unit | Detected value |
| Crystalline structure | / | Rutile-type |
| Median | μm | 1.1 |
| Density | g/cm 3 | 4.3 |
| Thermotolerance | ℃ | 1000 |
| Photostabilization | Level | 8 |
| Weathering resistance | Level | 5 |
| Acid resistance | Level | 5 |
| Alkali resistance | Level | 5 |
| Water content | % | 0.1 |
| Oil number | % | 18% |
| pH | / | 7.2 |
embodiment 4utilize discarded catalyst for denitrating flue gas to prepare a method for pigment, comprise the following steps:
With jaw crusher, honeycomb fashion waste denitration catalyst is broken into the catalyzer coarse particles of 30mm; At 80%(weight percent) catalyzer coarse particles in add 10%(weight percent) antimony peroxide and 10%(weight percent) chromic oxide, mix; With ball mill, the raw mill after mixing is made 200 orders (particle diameter 74 μm) powder particle below; Described powder particle being put into drum-type industry stoving oven, stop heating after being warming up to 800 DEG C with the temperature rise rate of 20 DEG C/min, there is combustion reactions to roasting in-furnace temperature and reaches 960 DEG C and no longer rise in powder particle at this temperature; Continue to be heated to roasting in-furnace temperature and reach 1000 DEG C, insulation 12h, naturally cooling obtains brown solid particle; Gained brown solid particle Raymond mill is ground to particle diameter less than 2 μm, i.e. obtained titanium chrome yellow (palm fibre) pigment.
Gained titanium chrome yellow (palm fibre) pigment sends out fundamental characteristics in table 4.
The fundamental characteristics of table 4 gained titanium chrome yellow (palm fibre) pigment
| Characteristic | Unit | Detected value |
| Crystalline structure | / | Rutile-type |
| Median | μm | 1.6 |
| Density | g/cm 3 | 4.7 |
| Thermotolerance | ℃ | 1000 |
| Photostabilization | Level | 8 |
| Weathering resistance | Level | 5 |
| Acid resistance | Level | 5 |
| Alkali resistance | Level | 5 |
| Water content | % | 0.2 |
| Oil number | % | 19% |
| pH | / | 7.3 |
embodiment 5utilize discarded catalyst for denitrating flue gas to prepare a method for pigment, comprise the following steps:
With jaw crusher, honeycomb fashion waste denitration catalyst is broken into the catalyzer coarse particles of 30mm; At 85%(weight percent) catalyzer coarse particles in add 6%(weight percent) antimony peroxide and 9%(weight percent) cobalt oxide, mix; With ball mill, the raw mill after mixing is made 200 orders (particle diameter 74 μm) powder particle below; Powder particle being put into drum-type industry stoving oven, stop heating after being warming up to 800 DEG C with the temperature rise rate of 20 DEG C/min, there is combustion reactions to roasting in-furnace temperature and reaches 980 DEG C and no longer rise in powder particle at this temperature; Continue to be heated to roasting in-furnace temperature and reach 1000 DEG C, insulation 12h, naturally cooling obtains grass green solid particulate; Gained grass green solid particulate Raymond mill is ground to particle diameter less than 1.5 μm, i.e. obtained cobalt titanate green pigment.
The fundamental characteristics of gained cobalt titanate green pigment is in table 5.
The fundamental characteristics of table 5 gained cobalt titanate green pigment
| Characteristic | Unit | Detected value |
| Crystalline structure | / | Spinel type |
| Median | μm | 1.1 |
| Density | g/cm 3 | 4.8 |
| Thermotolerance | ℃ | 1000 |
| Photostabilization | Level | 8 |
| Weathering resistance | Level | 5 |
| Acid resistance | Level | 5 |
| Alkali resistance | Level | 5 |
| Water content | % | 0.1 |
| Oil number | % | 1.5% |
| pH | / | 7.5 |
Claims (7)
1. utilize discarded catalyst for denitrating flue gas to prepare a method for pigment, it is characterized in that, the method comprises the following steps:
1) with crusher, discarded catalyst for denitrating flue gas is broken into the catalyzer coarse particles of 5-30mm;
2) in catalyzer coarse particles, add metal oxide stability agent and metal oxide developer, and mix;
3) with ball mill, the pigment crude grinding after mixing is made the powder particle of less than 100 μm;
4) described powder particle is added in industrial stoving oven, stop heating after being warming up to 800 DEG C with the temperature rise rate of 5-50 DEG C/min, make powder particle that combustion reactions occur at this temperature and no longer rise to roasting in-furnace temperature;
5) continue to be heated to roasting in-furnace temperature and reach 1000 DEG C, insulation 8-16h, naturally cooling obtains colored solid particle;
6) by gained colored solid particulate abrasive to particle diameter less than 2 μm, i.e. obtained pigment.
2. the discarded catalyst for denitrating flue gas of utilization as claimed in claim 1 prepares the method for pigment, and it is characterized in that, the pigment that described step 6) obtains is titanium nickel yellow, titanium chrome yellow, cobalt titanate green, titanium manganese brown titanium system mineral dye.
3. the discarded catalyst for denitrating flue gas of utilization as claimed in claim 1 prepares the method for pigment, it is characterized in that, described metal oxide stability agent is the mixture of one or more in the oxide compound of antimony, or the mixture of one or more of antimony metal salt compound, or the mixture of antimony metal oxide compound and antimony metal salt compound.
4. the discarded catalyst for denitrating flue gas of utilization as claimed in claim 3 prepares the method for pigment, and it is characterized in that, described metal oxide stability agent is the mixture of one or more in antimony peroxide, antimonous oxide.
5. the discarded catalyst for denitrating flue gas of utilization as claimed in claim 1 prepares the method for pigment, it is characterized in that, described metal oxide developer is the mixture of one or more metal oxides in nickel, manganese, chromium, cobalt, or nickel, manganese, chromium, cobalt metal salt compound the mixture of one or more, or the mixture of nickel, manganese, chromium, cobalt metal oxide and its metal salt compound.
6. the discarded catalyst for denitrating flue gas of utilization as claimed in claim 5 prepares the method for pigment, and it is characterized in that, described metal oxide developer is the mixture of one or more in nickel oxide, manganese oxide, chromic oxide, cobalt oxide.
7. the discarded catalyst for denitrating flue gas of utilization as claimed in claim 1 prepares the method for pigment, it is characterized in that, the weight percent of described discarded denitration smoke catalytic agent coarse particles, metal oxide stability agent and metal oxide developer is respectively 80-90%, 5-18% and 2-10%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347785A (en) * | 2015-11-30 | 2016-02-24 | 南京工业大学 | Ti-based porcelain made from waste vanadium-titanium denitration catalyst and preparing method thereof |
| CN106752112A (en) * | 2016-12-14 | 2017-05-31 | 江苏特丰新材料科技有限公司 | A kind of production method of near-infrared reflection ratio titan yellow high |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043328A (en) * | 1988-12-06 | 1990-06-27 | 化学工业部天津化工研究院 | The production method of brown |
| CN1310207A (en) * | 2000-10-20 | 2001-08-29 | 佛山科学技术学院 | Preparing process of iron oxide red pigment for high-temperature ceramic with iron-containing industrial sludge |
| US20020088374A1 (en) * | 2000-09-08 | 2002-07-11 | Ulrich Meisen | Process for producing yellow iron oxide pigments |
| CN102276146A (en) * | 2011-05-19 | 2011-12-14 | 长沙理工大学 | Method for producing ceramic and glass pigment by using waste chromium and cobalt catalysts from fluorination process as raw materials |
| CN103130265A (en) * | 2013-03-18 | 2013-06-05 | 江苏万德环保科技有限公司 | Method for recycling titanium dioxide in waste SCR (Selective Catalytic Reduction) denitration catalyst |
| CN103508491A (en) * | 2013-09-23 | 2014-01-15 | 宜兴市宜刚环保工程材料有限公司 | Method for regeneration and resource utilization of waste honeycombed denitrification catalyst |
| CN103966447A (en) * | 2014-05-20 | 2014-08-06 | 漯河兴茂钛业股份有限公司 | Comprehensive utilization method of waste denitration catalyst |
-
2015
- 2015-06-24 CN CN201510352089.2A patent/CN104973623B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043328A (en) * | 1988-12-06 | 1990-06-27 | 化学工业部天津化工研究院 | The production method of brown |
| US20020088374A1 (en) * | 2000-09-08 | 2002-07-11 | Ulrich Meisen | Process for producing yellow iron oxide pigments |
| CN1310207A (en) * | 2000-10-20 | 2001-08-29 | 佛山科学技术学院 | Preparing process of iron oxide red pigment for high-temperature ceramic with iron-containing industrial sludge |
| CN102276146A (en) * | 2011-05-19 | 2011-12-14 | 长沙理工大学 | Method for producing ceramic and glass pigment by using waste chromium and cobalt catalysts from fluorination process as raw materials |
| CN103130265A (en) * | 2013-03-18 | 2013-06-05 | 江苏万德环保科技有限公司 | Method for recycling titanium dioxide in waste SCR (Selective Catalytic Reduction) denitration catalyst |
| CN103508491A (en) * | 2013-09-23 | 2014-01-15 | 宜兴市宜刚环保工程材料有限公司 | Method for regeneration and resource utilization of waste honeycombed denitrification catalyst |
| CN103966447A (en) * | 2014-05-20 | 2014-08-06 | 漯河兴茂钛业股份有限公司 | Comprehensive utilization method of waste denitration catalyst |
Non-Patent Citations (1)
| Title |
|---|
| 张龙等: ""废中变催化剂制取颜料的新途径"", 《化肥工业》, no. 4, 31 December 1992 (1992-12-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347785A (en) * | 2015-11-30 | 2016-02-24 | 南京工业大学 | Ti-based porcelain made from waste vanadium-titanium denitration catalyst and preparing method thereof |
| CN106752112A (en) * | 2016-12-14 | 2017-05-31 | 江苏特丰新材料科技有限公司 | A kind of production method of near-infrared reflection ratio titan yellow high |
| CN106752112B (en) * | 2016-12-14 | 2019-03-05 | 江苏特丰新材料科技有限公司 | A kind of production method of high near-infrared reflection ratio titan yellow |
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