CN105964239A - Method for preparing spherical denitration catalyst - Google Patents
Method for preparing spherical denitration catalyst Download PDFInfo
- Publication number
- CN105964239A CN105964239A CN201610347694.5A CN201610347694A CN105964239A CN 105964239 A CN105964239 A CN 105964239A CN 201610347694 A CN201610347694 A CN 201610347694A CN 105964239 A CN105964239 A CN 105964239A
- Authority
- CN
- China
- Prior art keywords
- spherical
- catalyst
- preparation
- denitrating catalyst
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000008367 deionised water Substances 0.000 claims abstract description 20
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 14
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000032683 aging Effects 0.000 claims abstract description 13
- 239000012745 toughening agent Substances 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 14
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 9
- 238000004898 kneading Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 239000004005 microsphere Substances 0.000 claims description 8
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 8
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 7
- 235000014655 lactic acid Nutrition 0.000 claims description 7
- 239000004310 lactic acid Substances 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910001593 boehmite Inorganic materials 0.000 claims description 5
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 4
- -1 leaven Substances 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 238000000855 fermentation Methods 0.000 abstract 2
- 230000004151 fermentation Effects 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 241000264877 Hippospongia communis Species 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 229910000420 cerium oxide Inorganic materials 0.000 description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/066—Zirconium or hafnium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
-
- B01J35/51—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2065—Cerium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20715—Zirconium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/2073—Manganese
Abstract
The invention discloses a method for preparing a spherical denitration catalyst. The method specifically comprises the following steps: 1) uniformly mixing cordierite and deionized water in a pug mill; 2) adding an adhesive, a toughening agent and a pore-forming agent into the pug mill, and uniformly mixing so as to obtain mud pie; 3) adding the mud pie, the deionized water, a fermentation agent and a catalyst active component into the pug mill, mixing and smelting uniformly for a second time, sealing, and aging so as to obtain a mixture, wherein the mixture comprises the following components in percentage by weight: 8-15% of cordierite, 25-35% of the catalyst active component, 1-3% of the adhesive, 1-5% of the toughening agent, 1-5% of the pore-forming agent, 1-5% of the fermentation agent and 32-63% of water, and the percentage sum of the components is 100%; 4) mixing and smelting the mixture for a third time, balling, aging, and drying, thereby obtaining the spherical denitration catalyst. The spherical denitration catalyst prepared by using the method is easy in dust cleaning, blocking can be not easily caused, the contact area of gases and catalysts can be effectively increased, and the catalysis efficiency can be improved.
Description
Technical field
The present invention relates to the preparation method of a kind of catalyst, particularly relate to a kind of spherical denitrating catalyst
Preparation method.
Background technology
Nitrogen oxides can produce photochemical fog, acid rain, Ozone hole and greenhouse effect, is air
One of major pollutants.At present, during denitrating flue gas is control coal-fired process, discharged nitrous oxides has
One of efficacious prescriptions method, wherein SCR (SCR) technology because its denitration efficiency is high, selectivity is good,
The advantages such as stable and reliable operation, are widely used during denitrating flue gas.
Common pellet type catalyst cannot directly apply to the denitrating technique of boiler smoke, it is necessary to possesses
Certain shape could preferably play a role, and current industrial conventional use of SCR monoblock type is catalyzed
Agent is broadly divided into corrugated plate dst, flat and honeycomb fashion three kinds.
Corrugated plate dst denitrating catalyst is that the mixture of catalyst and carrier etc. is attached on certain substrate
On, substrate is the wire netting being pressed into stainless steel metal plate, through compacting, calcination after sticking, will urge
Agent plate is assembled into catalyst module.Board-like catalyst has that specific surface area is less, produce simple, machine
The advantage that tool intensity is high, but actual application easily blocks between the upper and lower module of catalyst, substantial activity
Material is less.
Plate-type denitration catalyst is that carrier and catalyst active component are impregnated into the table of catalyst carrier
Face, carrier is reinforced glass fiber, and the advantage of corrugated catalyst is lightweight, but active substance is few,
In actual applications after flue gas weares and teares for a long time, active component runs off significantly, and catalyst life contracts
It is short, so corrugated catalyst more application is in low dirt environment.
Honeycomb type denitrification catalyst is generally divided into two kinds of forms, a kind of ceramic honey comb with after pre-treatment (as
Cordierite) it is substrate, at its surface-coated pellet type catalyst, then drying roasting is catalyzed
Agent；Another kind is homogenizing honeycomb type catalyst, is to be added suitably by the pellet type catalyst prepared
Additive, obtains catalyst through a series of moulding process.The shortcoming of this type of catalyst is activity group
Divide less.
Summary of the invention
Present invention is primarily targeted at, it is provided that the preparation method of a kind of novel spherical denitrating catalyst,
Technical problem to be solved makes catalyst easy-to-clean ash, should not block, effective increase gas and catalysis
The contact area of agent, improves catalytic efficiency, thus more suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.Foundation
The preparation method of a kind of spherical denitrating catalyst that the present invention proposes, specifically includes following steps:
1) cordierite and deionized water are placed in mix homogeneously in pug mill；
2) in pug mill add binding agent, toughener, pore creating material, mixing kneading to mix homogeneously,
Obtain walk；
3) by described walk, deionized water, leaven, catalyst activity component addition pug mill, two
Secondary mixing uniformly, seal, old, obtain mixture；The weight percent of each component of described mixture
Ratio is: cordierite: 8-15%；Catalyst activity component: 25-35%；Binding agent: 1-3%；Toughener:
1-5%；Pore creating material: 1-5%；Leaven: 1-5%；Water: 32-63%, said components summation is 100%；
4) described mixture three times is mixing, make spherical, aging, it is dried, obtains spherical denitration and urge
Agent.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein said binding agent is carboxylic
Methylcellulose, Ludox or boehmite.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein said toughener is glass
Glass fiber or polyvinyl alcohol.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein said pore creating material is poly-
Ethylene oxide or PMMA microsphere.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein said polyethylene glycol oxide
Molecular weight is 105-106；The aperture size of described PMMA microsphere is 300nm-150um.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein said leaven is breast
Acid or stearic acid.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein step 3) in the old time
For 20-30h.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein step 4) in aging time
Between be 20-30h；Baking temperature is 50 DEG C-100 DEG C, and drying time is 8-15h, and calcining heat is
100 DEG C-200 DEG C, calcination time is 3-7h；It is dried the speed with 0.5 DEG C/min-2 DEG C/min after terminating
It is warming up to calcining heat.
Preferably, the preparation method of aforesaid spherical denitrating catalyst, wherein said spherical denitration is urged
Agent particle diameter is 4-12mm.
By technique scheme, the preparation method of the spherical denitrating catalyst of the present invention at least has following
Advantage: spheric catalyst is conducive to removing the dust adhering to catalyst surface, it is possible to solve catalyst
Surface laying dust phenomenon, can effectively increase the contact area of gas and catalyst, improves catalytic efficiency.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the present invention's
Technological means, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention
After describing in detail such as.
Detailed description of the invention
By further illustrating the technological means and merit that the present invention taked by reaching predetermined goal of the invention
Effect, below in conjunction with preferred embodiment, the preparation method to the spherical denitrating catalyst proposed according to the present invention
Its detailed description of the invention, structure, feature and effect thereof, after describing in detail such as.In the following description,
What different " embodiments " or " embodiment " referred to is not necessarily same embodiment.Additionally, one or
Special characteristic, structure or feature in multiple embodiments can be combined by any suitable form.
The preparation method of a kind of spherical denitrating catalyst that one embodiment of the present of invention proposes, specifically wraps
Include following steps:
1) cordierite and deionized water are placed in mix homogeneously in pug mill；
2) in pug mill add binding agent, toughener, pore creating material, mixing kneading to mix homogeneously,
Obtain walk；
Described binding agent can be chosen as: carboxymethyl cellulose, Ludox or boehmite；Institute
What the binding agent stated was played act as: make raw material preferably mix bonding, prepares circular walk.
Described toughener can be chosen as: glass fibre or polyvinyl alcohol；Described toughener is risen
To act as: improve binding agent toughness, increase catalyst compressive resistance.
Described pore creating material can be chosen as: polyethylene glycol oxide or PMMA microsphere；Described leaven institute
That plays act as: increase the pore space structure of catalyst, improves the specific surface area of catalyst.
3) by described walk, deionized water, leaven, catalyst activity component addition pug mill, two
Secondary mixing uniformly, seal, old, obtain mixture；The weight percent of each component of described mixture
Ratio is: cordierite: 8-15%；Catalyst activity component: 25-35%；Binding agent: 1-3%；Toughener:
1-5%；Pore creating material: 1-5%；Leaven: 1-5%；Water: 32-63%, said components summation is 100%；
Described leaven is chosen as: lactic acid or stearic acid；What it was played act as: urge in preparation
Leaven volatilization in agent, increases catalyst plasticity.
Described catalyst activity compositional selecting is: transition metal or lanthanide metal oxide；It is risen
To act as: in denitration reaction, improve nitric oxide production conversion ratio.
4) described mixture three times is mixing, make spherical, aging, it is dried, obtains spherical denitration and urge
Agent.
The particle diameter of described spherical denitrating catalyst is 4-12mm.
Embodiment 1
1) 10g cordierite and 30mL deionized water are placed in mix homogeneously in pug mill；
2) in pug mill, 1.05g carboxymethyl cellulose, 1.8g glass fibre, 1.5g molecule are added
Amount is 105Polyethylene glycol oxide, mixing kneading 30min, to mix homogeneously, obtains walk；
3) in described walk, add 30mL deionized water, 1.5g lactic acid, 30g cerium oxide, add
Mixing 3h in pug mill, mixing uniformly after, fully seal, old 24h, obtain mixture；
4) by three mixing 2h of described mixture, making 4-6mm spherical, aging 24h, at Muffle furnace
In 70 DEG C of dry 12h, then 1 DEG C/min of temperature programming is raised to 150 DEG C, keep 5h then lower the temperature,
Obtain hardness 5MPa, the spherical denitrating catalyst of particle diameter 4-6mm.
Embodiment 2
1) 15g cordierite and 30mL deionized water are placed in mix homogeneously in pug mill；
2) in pug mill, 1.5g Ludox, 1.1g glass fibre, 1.8g aperture size 300nm are added
PMMA microsphere, mixing kneading 40min, to mix homogeneously, obtains walk；
3) in described walk, add 25mL deionized water, 2g lactic acid, the zirconium oxide of 35g, add
Mixing 5h in pug mill, mixing uniformly after, fully seal, old 20h, obtain mixture；
4) by three mixing 3h of described mixture, making 6-8mm spherical, aging 30h, at Muffle furnace
In 50 DEG C of dry 15h, then 0.5 DEG C/min of temperature programming is raised to 100 DEG C, keep 7h then lower the temperature,
Obtain hardness 5MPa, the spherical denitrating catalyst of particle diameter 6-8mm.
Embodiment 3
1) 10g and 30mL deionized water is placed in mix homogeneously in pug mill；
2) in pug mill, addition 3g boehmite, 5g glass fibre, 5g molecular weight are 108's
Polyethylene glycol oxide, mixing kneading 30min, to mix homogeneously, obtains walk；
3) in described walk, add 30mL deionized water, 5g lactic acid, the manganese oxide of 25g, add
Mixing 4h in pug mill, mixing uniformly after, fully seal, old 20h, obtain mixture；
4) by three mixing 3h of described mixture, making 8-10mm spherical, aging 20h, in Muffle
100 DEG C of dry 12h in stove, then 2 DEG C/min of temperature programming is raised to 200 DEG C, keeps 3h then to lower the temperature,
Obtain hardness 5MPa, the spherical denitrating catalyst of particle diameter 8-10mm.
Embodiment 4
1) 10g cordierite and 30mL deionized water are placed in mix homogeneously in pug mill；
2) in pug mill, 2g carboxymethyl cellulose, 2.1g polyvinyl alcohol, 3g aperture size 150um are added
PMMA microsphere, mixing kneading 50min, to mix homogeneously, obtains walk；
3 add 20mL deionized water, 3g lactic acid, the cerium oxide of 25g in described walk, join
Mixing 3h in pug mill, mixing uniformly after, fully seal, old 30h, obtain mixture；
4) by three mixing 3h of said mixture, making 10-12mm spherical, aging 24h, in Muffle
70 DEG C of dry 12h in stove, then 1 DEG C/min of temperature programming is raised to 150 DEG C, keeps 5h then to lower the temperature,
Obtain hardness 5MPa, the spherical denitrating catalyst of particle diameter 10-12mm.
Embodiment 5
1) 10g cordierite and 30mL deionized water are placed in mix homogeneously in pug mill；
2) in pug mill, addition 2.1g Ludox, 1.8g glass fibre, 1.5g molecular weight are 105
Polyethylene glycol oxide, mixing kneading 30min, to mix homogeneously, obtains walk；
3) in described walk, add 30mL deionized water, 1.5g stearic acid, 30g cerium oxide, add
Enter in pug mill mixing 3h, mixing uniformly after, fully seal, old 24h, obtain mixture；
4) by three mixing 2h of described mixture, making 4-6mm spherical, aging 24h, at Muffle furnace
In 100 DEG C of dry 8h, then 1 DEG C/min of temperature programming is raised to 500 DEG C, keep 5h then lower the temperature,
Obtain hardness 5MPa, the spherical denitrating catalyst of particle diameter 4-6mm.
Embodiment 6
1) 12g cordierite and 30mL deionized water are placed in mix homogeneously in pug mill；
2) in pug mill, 2.5g boehmite, 1.8g glass fibre, 1.4g aperture size are added
The PMMA microsphere of 500nm, mixing kneading 30min, to mix homogeneously, obtains walk；
3) in described walk, add 30mL deionized water, 1.5g lactic acid, 30g manganese oxide, add
Mixing 3h in pug mill, mixing uniformly after, fully seal, old 24h, obtain mixture；
4) by three mixing 2h of described mixture, making 6-8mm spherical, aging 24h, at Muffle furnace
In 70 DEG C of dry 12h, then 1.5 DEG C/min of temperature programming is raised to 500 DEG C, keep 5h then lower the temperature,
Obtain hardness 5MPa, the spherical denitrating catalyst of particle diameter 6-8mm.
The catalyst that the catalyst preparing embodiment 1-6 and comparative example prepare is for denitration reaction, instead
Condition and Activity Results is answered to be shown in Table 1.
Catalyst performance evaluation: utilizing simulated flue gas to test catalyst denitration situation, simulated flue gas forms
For: NO:500ppm, NH3: 500ppm, O2: 5%vol, N2For Balance Air.Flue gas flow is 100mL/min,
Take the catalyst of different volumes to put into fixed bed reactors and test, the catalysis under test different temperatures
The out of stock efficiency of agent, controls reaction temperature and is 50-400 DEG C.Use flue gas analyzer detection reactor outlet
The concentration of the NO at place.NO conversion ratio, i.e. denitration rate is calculated according to formula 1.
NO conversion ratio=[(NOin-NOout)/NOin] × 100% (formula 1)
Table 1. catalyst SCR denitration reaction test Activity Results
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any form
On restriction, any simple modification above example made according to the technical spirit of the present invention, etc.
With change and modification, all still fall within the range of technical solution of the present invention.
Claims (9)
1. the preparation method of a spherical denitrating catalyst, it is characterised in that: specifically include following steps:
1) cordierite and deionized water are placed in mix homogeneously in pug mill；
2) in pug mill add binding agent, toughener, pore creating material, mixing kneading to mix homogeneously,
Obtain walk；
3) by described walk, deionized water, leaven, catalyst activity component addition pug mill, two
Secondary mixing uniformly, seal, old, obtain mixture；The weight percent of each component of described mixture
Ratio is: cordierite: 8-15%；Catalyst activity component: 25-35%；Binding agent: 1-3%；Toughener:
1-5%；Pore creating material: 1-5%；Leaven: 1-5%；Water: 32-63%, said components summation is 100%；
4) described mixture three times is mixing, make spherical, aging, it is dried, obtains spherical denitration and urge
Agent.
The preparation method of spherical denitrating catalyst the most according to claim 1, it is characterised in that
Described binding agent is carboxymethyl cellulose, Ludox or boehmite.
The preparation method of spherical denitrating catalyst the most according to claim 1, it is characterised in that
Described toughener is glass fibre or polyvinyl alcohol.
The preparation method of spherical denitrating catalyst the most according to claim 1, it is characterised in that
Described pore creating material is polyethylene glycol oxide or PMMA microsphere.
The preparation method of spherical denitrating catalyst the most according to claim 4, it is characterised in that
Described polyethylene glycol oxide molecular weight is 105-106；The aperture size of described PMMA microsphere is
300nm-150um。
The preparation method of spherical denitrating catalyst the most according to claim 1, it is characterised in that
Described leaven is lactic acid or stearic acid.
The preparation method of spherical denitrating catalyst the most according to claim 1, it is characterised in that
Step 3) in the old time be 20-30h.
The preparation method of spherical denitrating catalyst the most according to claim 1, it is characterised in that
Step 4) in ageing time be 20-30h；Baking temperature is 50 DEG C-100 DEG C, and drying time is 8-15h,
Calcining heat is 100 DEG C-200 DEG C, and calcination time is 3-7h；It is dried after terminating with 0.5 DEG C/min-2 DEG C
The ramp of/min is to calcining heat.
The preparation method of spherical denitrating catalyst the most according to claim 1, it is characterised in that
Described spherical denitrating catalyst particle diameter is 4-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610347694.5A CN105964239B (en) | 2016-05-23 | 2016-05-23 | The preparation method of spherical denitrating catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610347694.5A CN105964239B (en) | 2016-05-23 | 2016-05-23 | The preparation method of spherical denitrating catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105964239A true CN105964239A (en) | 2016-09-28 |
| CN105964239B CN105964239B (en) | 2018-09-11 |
Family
ID=56956938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610347694.5A Active CN105964239B (en) | 2016-05-23 | 2016-05-23 | The preparation method of spherical denitrating catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105964239B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732546A (en) * | 2016-12-28 | 2017-05-31 | 南京德普瑞克催化器有限公司 | A kind of spherical SCR denitration and preparation method thereof |
| CN107098333A (en) * | 2017-06-05 | 2017-08-29 | 北京化工大学 | A kind of preparation method of crosslinking net carbon nanomaterial |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114423A (en) * | 2011-01-12 | 2011-07-06 | 江苏峰业电力环保集团有限公司 | Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method |
| CN102614866A (en) * | 2012-03-01 | 2012-08-01 | 浙江大学 | Honeycomb SCR smoke denitration catalyst embryoid body and preparation method thereof |
-
2016
- 2016-05-23 CN CN201610347694.5A patent/CN105964239B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114423A (en) * | 2011-01-12 | 2011-07-06 | 江苏峰业电力环保集团有限公司 | Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method |
| CN102614866A (en) * | 2012-03-01 | 2012-08-01 | 浙江大学 | Honeycomb SCR smoke denitration catalyst embryoid body and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 姚杰等: ""蜂窝状SCR脱硝催化剂成型配方选择"", 《中国环境科学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732546A (en) * | 2016-12-28 | 2017-05-31 | 南京德普瑞克催化器有限公司 | A kind of spherical SCR denitration and preparation method thereof |
| CN106732546B (en) * | 2016-12-28 | 2019-03-01 | 南京德普瑞克催化器有限公司 | A kind of spherical shape SCR denitration and preparation method thereof |
| CN107098333A (en) * | 2017-06-05 | 2017-08-29 | 北京化工大学 | A kind of preparation method of crosslinking net carbon nanomaterial |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105964239B (en) | 2018-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102824922B (en) | Integrated honeycomb SCR (selective catalytic reduction) catalyst for low-temperature smoke denitration and preparation method of catalyst | |
| CN106807356B (en) | A kind of low temperature SCR denitration catalyst and its methods for making and using same | |
| CN104857950B (en) | A kind of manganese-cerium composite oxide low-temperature denitration catalyst with hollow more shell micro-sphere structures | |
| CN101428212B (en) | Selective catalysis reduction denitrate catalyst for composite carrier flue gas and preparation method thereof | |
| CN102489294B (en) | Low-temperature SCR catalyst prepared by extrusion molding, and preparation method thereof | |
| CN106513011B (en) | Metal composite oxide SCR flue gas denitration catalyst and preparation method thereof | |
| CN101036884A (en) | Titanium radicle catalyzer for thermal power plant smock air SCR denitration | |
| WO2019006895A1 (en) | Preparation method and use of trifolium-shaped catalyst for cooperatively controlling nox and cvocs | |
| CN105597817A (en) | Low-temperature SCR (selective catalytic reduction) flue gas denitrification catalyst containing MnOx/SAPO-11 as well as preparation method and application of catalyst | |
| CN102489305A (en) | Transition metal composite oxide catalyst for catalytic decomposition of N2O and method for preparing catalyst | |
| CN104415755A (en) | Denitration catalyst adopting modified active carbon as matrix material, and preparation method thereof | |
| CN105148954A (en) | Low-temperature efficient SCR denitration catalyst and preparation method thereof | |
| CN104128188A (en) | Denitration catalyst used in waste incineration power plant and preparation method thereof | |
| CN107185523B (en) | Preparation method of holmium modified denitration catalyst and product thereof | |
| CN108236960A (en) | A kind of TiO2-SO42-High resistant to sulfur ceria-based denitration catalyst of load and preparation method thereof | |
| CN105964239A (en) | Method for preparing spherical denitration catalyst | |
| CN102728347B (en) | MnO2-TiO2 graphite-porous inorganic ceramic membrane low temperature catalyst denitration self-cleaning material and its preparation method | |
| CN106215945B (en) | A kind of modification infusorial earth and its preparation method and application | |
| CN104998684B (en) | A kind of rare earth modified SCR denitration and preparation method thereof | |
| CN103260754A (en) | Carrier for Nox reduction catalyst | |
| CN104415756A (en) | Modified active carbon and preparation method thereof | |
| CN104415766A (en) | Coal-fired power station flue gas denitration composite catalyst and preparation method thereof | |
| CN104415763A (en) | Modified diatomite and preparation method thereof | |
| CN108579756A (en) | One main laminaria shape Mn-Fe bimetallic oxide load Cs eO2Catalyst and preparation method and application | |
| CN104415777A (en) | Active powder preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220829 Address after: 7th Floor, Building A, Gaoqiao Chamber of Commerce Building, No. 388, Huixian Road, Gaoqiao Town, Haishu District, Ningbo City, Zhejiang Province 315000 (7-016) Patentee after: Zhejiang Tianlin Environmental Engineering Co.,Ltd. Address before: 832003 North four road, Shihezi, the Xinjiang Uygur Autonomous Region 221 Patentee before: SHIHEZI University |
|
| TR01 | Transfer of patent right |