CN106492884A - A kind of catalyst with attapulgite as carrier - Google Patents
A kind of catalyst with attapulgite as carrier Download PDFInfo
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- CN106492884A CN106492884A CN201610800065.3A CN201610800065A CN106492884A CN 106492884 A CN106492884 A CN 106492884A CN 201610800065 A CN201610800065 A CN 201610800065A CN 106492884 A CN106492884 A CN 106492884A
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- attapulgite
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- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J27/188—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
- B01J27/19—Molybdenum
-
- 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
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
Abstract
The invention discloses a kind of catalyst with attapulgite as carrier, the catalyst includes the following raw material：Attapulgite, MoO2、Cr2O3、MnO2、SnO2、ZrO2, lubricant and heteropoly acid；Preparation method is to add attapulgite in electrolyte solution to impregnate, and is transferred in water heating kettle, reacts after ageing, that is, carrier is obtained；By MoO2、Cr2O3、MnO2、SnO2、ZrO2And after heteropoly acid is mixed, add above-mentioned carrier, dipping that catalyst is obtained.Advantage is that the denitrating catalyst has relatively low light-off temperature, and its heat stability and hydrothermal stability are strong, active temperature windows width, denitration efficiency are high, and catalyst life is long；Meanwhile, the preparation method of the present invention is simple, workable, reduces production cost.
Description
Technical field
A kind of the invention belongs to catalyst field, more particularly to catalyst with attapulgite as carrier.
Background technology
Nitrogen oxides are very serious to the pollution of environment, and nitrogen oxides are both the basis of nitric acid type acid rain, are to form light again
One of chemical fumes, the main matter for damaging the ozone layer；Nitrogen oxides also have very strong toxicity, can cause pole to health
Macrolesion.In recent years, with economic fast development, the discharge capacity of nitrogen oxides pollution thing increases sharply, severe contamination life
State environment, it has also become the environmental problem of global concern.
By being controlled to the discharge capacity of its nitrogen oxides in thermal power plant and industrial furnace De-NO_x, its
Middle selective catalytic reduction (SCR) denitration is one of most ripe gas denitrifying technology of most widely used, technology in the world,
Its technological core is to have used denitrating catalyst, have the advantages that reaction temperature relatively low, purifying rate is high, reliable.Flat board
Formula catalyst is a very important class in this kind of catalyst, with the higher market share.
The mechanical performance of denitrating catalyst is used for the life-span to have a significant impact, and the flying dust in flue gas constantly washes away catalyst
Surface may result in catalyst large area to peel off and cave in, so as to greatly shorten catalyst life.Additionally, China will welcome big rule
The inactivation denitrating catalyst regeneration market of mould, the regeneration for inactivating denitrating catalyst are not only advantageous to environmental conservation, save material,
The cycling and reutilization of resource is realized, and reduces denitration cost, while avoiding causing the two of the serious waste of resource and environment
Secondary pollution, State Council exist《With regard to accelerating development the suggestion of energy-conserving and environment-protective industry》In, clearly propose denitration to be greatly developed and urge
Agent regeneration techniques.If catalytic mechanical performance is not good, there is the phenomenons such as serious peeling in use and will be unable to carry out
Regeneration, this partial catalyst must be processed as danger wastes, and processing cost is high and environmental pollution is serious.
Content of the invention
It is an object of the invention to provide a kind of denitration efficiency height and the strong catalyst with attapulgite as carrier of stability.
Technical scheme：Denitrating catalyst of the present invention with attapulgite as carrier, includes the following raw material by weight：Recessed
Convex rod stone 100-120 parts, MoO210-30 parts, Cr2O35-20 parts, MnO220-30 parts, SnO22-12 parts, ZrO29-27 parts,
Lubricant 17-35 parts and heteropoly acid 6-15 parts.Preferably, the parts by weight of lubricant can be 25-32 parts, and which at least includes polyureas
One kind in grease, epoxy resin, polyacrylate, fatty acid amide, Oleic acid, carboxylic acid, esters of silicon acis or fluorocarbon oil；Heteropoly acid
Parts by weight can be 10-15 parts, and which may include 12- tungstophosphoric acids, 12- tungstosilicic acids or 12- molybdenum silicic acids；The parts by weight of attapulgite
For 105-115 parts；MoO2Parts by weight be 15-25 parts.
The present invention prepares the method for the denitrating catalyst with attapulgite as carrier and comprises the steps：
(1) attapulgite is added in electrolyte solution and is impregnated, after ageing 15-35h, mixed liquor is transferred to water heating kettle
In, then 12-15h is reacted under the conditions of 120-160 DEG C, through filtering, washing, dry, after roasting, that is, Attapulgite carrier is obtained；
(2) MoO is weighed by weight2、Cr2O3、MnO2、SnO2、ZrO2, lubricant and heteropoly acid, by MoO2、Cr2O3、
MnO2、SnO2、ZrO2And after heteropoly acid is mixed, add carrier obtained above, dipping denitrating catalyst slurry to be obtained, this is starched
Material is mixed with lubricant, drying, after roasting, that is, denitrating catalyst is obtained.
Beneficial effect：Compared with prior art, remarkable advantage of the invention is：There is the denitrating catalyst relatively low rising to live
Temperature, its heat stability and hydrothermal stability are strong, active temperature windows width, denitration efficiency are high, and catalyst life is long；Meanwhile,
The preparation method of the present invention is simple, workable, reduces production cost.
Specific embodiment
Technical scheme is described further with reference to embodiment.
Embodiment 1
Raw material：105 parts of attapulgite, MoO215 parts, Cr2O315 parts, MnO225 parts, SnO28 parts, ZrO220 parts, poly-
10 parts of 32 parts of urea grease and 12- tungstophosphoric acids.
Preparation method：(1) attapulgite is added in electrolyte solution and is impregnated, after ageing 20h, mixed liquor is transferred to water
In hot kettle, then 13h is reacted under the conditions of 130 DEG C, through filtering, washing, dry, after roasting, that is, Attapulgite carrier is obtained；
(2) MoO is weighed by weight2、Cr2O3、MnO2、SnO2、ZrO2, polyurea grease and 12- tungstophosphoric acids, will
MoO2、Cr2O3、MnO2、SnO2、ZrO2And after 12- tungstophosphoric acids are mixed, add carrier obtained above, dipping that denitration catalyst is obtained
Agent slurry, the slurry is mixed with lubricant, is coated on rustless steel steel mesh, is dried 4h at 100 DEG C, 450 DEG C of air atmospheres
Lower roasting 9h, that is, be obtained denitrating catalyst.
Embodiment 2
Raw material：115 parts of attapulgite, MoO225 parts, Cr2O310 parts, MnO222 parts, SnO210 parts, ZrO215 parts,
15 parts of 25 parts of lubricant and 12- tungstosilicic acids, wherein, lubricant is epoxy resin and polyacrylate.
Preparation method：(1) attapulgite is added in electrolyte solution and is impregnated, after ageing 30h, mixed liquor is transferred to water
In hot kettle, then 14h is reacted under the conditions of 140 DEG C, through filtering, washing, dry, after roasting, that is, Attapulgite carrier is obtained；
(2) MoO is weighed by weight2、Cr2O3、MnO2、SnO2、ZrO2, lubricant and 12- tungstosilicic acids, by MoO2、
Cr2O3、MnO2、SnO2、ZrO2And after 12- tungstosilicic acids are mixed, add carrier obtained above, dipping that denitrating catalyst slurry is obtained
Material, the slurry is mixed with lubricant, is coated on rustless steel steel mesh, is dried 3h at 110 DEG C, is roasted under 430 DEG C of air atmospheres
12h is burnt, that is, denitrating catalyst is obtained.
Embodiment 3
Raw material：100 parts of attapulgite, MoO230 parts, Cr2O35 parts, MnO230 parts, SnO22 parts, ZrO227 parts, profit
15 parts of 17 parts of lubrication prescription and 12- molybdenum silicic acids, wherein, lubricant is fatty acid amide and Oleic acid.
Preparation method：(1) attapulgite is added in electrolyte solution and is impregnated, after ageing 15h, mixed liquor is transferred to water
In hot kettle, then 12h is reacted under the conditions of 120 DEG C, through filtering, washing, dry, after roasting, that is, Attapulgite carrier is obtained；
(2) by MoO2、Cr2O3、MnO2、SnO2、ZrO2And after 12- molybdenum silicic acids are mixed, add carrier obtained above, leaching
Stain, is obtained denitrating catalyst slurry, the slurry is mixed with lubricant, is coated on rustless steel steel mesh, is dried 6h at 95 DEG C,
Roasting 10h under 410 DEG C of air atmospheres, that is, be obtained denitrating catalyst.
Embodiment 3
Raw material：120 parts of attapulgite, MoO210 parts, Cr2O320 parts, MnO220 parts, SnO212 parts, ZrO29 parts, profit
6 parts of 35 parts of lubrication prescription and 12- molybdenum silicic acids, wherein, lubricant is carboxylic acid, esters of silicon acis and fluorocarbon oil.
Preparation method：(1) attapulgite is added in electrolyte solution and is impregnated, after ageing 35h, mixed liquor is transferred to water
In hot kettle, then 15h is reacted under the conditions of 160 DEG C, through filtering, washing, dry, after roasting, that is, Attapulgite carrier is obtained；
(2) by MoO2、Cr2O3、MnO2、SnO2、ZrO2And after 12- molybdenum silicic acids are mixed, add carrier obtained above, leaching
Stain, is obtained denitrating catalyst slurry, the slurry is mixed with lubricant, is coated on rustless steel steel mesh, is dried 6h at 95 DEG C,
Roasting 10h under 410 DEG C of air atmospheres, that is, be obtained denitrating catalyst.
Denitrating catalyst prepared by embodiment 1-4 is put in fixed-bed micro-reactor and is evaluated, in the reactor
Temperature be 400 DEG C, simulated flue gas consist of NO concentration for 450ppm, NH3Concentration is 450ppm, O2Content is 5%, vapor
Content is 5%, and remaining is N2, gas volume air speed 30000h-1, and entrance NO concentration detected by flue gas analyzer.Obtain
Experimental result as shown in table 1.
The denitration efficiency synopsis of denitrating catalyst obtained in 1-4 implemented by table 1
As shown in Table 1, not only denitration efficiency is high for denitrating catalyst obtained in embodiment 1-4, and there is relatively low rising to live for which
Temperature, heat-flash stability and hydrothermal stability are strong, while its active temperature windows width, life-span length.
Claims (7)
1. a kind of catalyst with attapulgite as carrier, it is characterised in that include the following raw material by weight：Attapulgite
100-120 parts, MoO210-30 parts, Cr2O35-20 parts, MnO220-30 parts, SnO22-12 parts, ZrO29-27 parts, lubricant
17-35 parts and heteropoly acid 6-15 parts.
2. the catalyst with attapulgite as carrier according to claim 1, it is characterised in that：The lubricant is at least wrapped
Include the one kind in polyurea grease, epoxy resin, polyacrylate, fatty acid amide, Oleic acid, carboxylic acid, esters of silicon acis or fluorocarbon oil.
3. the catalyst with attapulgite as carrier according to claim 1, it is characterised in that：The heteropoly acid includes
12- tungstophosphoric acids, 12- tungstosilicic acids or 12- molybdenum silicic acids.
4. the catalyst with attapulgite as carrier according to claim 1, it is characterised in that：The weight of the attapulgite
Amount number is 105-115 parts.
5. the catalyst with attapulgite as carrier according to claim 1, it is characterised in that：The MoO2Weight portion
Number is 15-25 parts.
6. the catalyst with attapulgite as carrier according to claim 1 and 2, it is characterised in that：The lubricant
Parts by weight are 25-32 parts.
7. the catalyst with attapulgite as carrier according to claim 1 or 3, it is characterised in that：The heteropoly acid
Parts by weight are 10-15 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610800065.3A CN106492884A (en) | 2016-08-31 | 2016-08-31 | A kind of catalyst with attapulgite as carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610800065.3A CN106492884A (en) | 2016-08-31 | 2016-08-31 | A kind of catalyst with attapulgite as carrier |
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| Publication Number | Publication Date |
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| CN106492884A true CN106492884A (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610800065.3A Withdrawn CN106492884A (en) | 2016-08-31 | 2016-08-31 | A kind of catalyst with attapulgite as carrier |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110274607A1 (en) * | 2010-05-04 | 2011-11-10 | Technical University Of Denmark | Vanadia-supported zeolites for scr of no by ammonia |
| CN103861628A (en) * | 2012-12-14 | 2014-06-18 | 上海郎特电力环保科技有限公司 | Flue-gas denitration catalyst incapable of being deactivated by basic metallic oxides, preparation method thereof and applications thereof |
| CN105688974A (en) * | 2016-01-11 | 2016-06-22 | 大唐南京环保科技有限责任公司 | Denitration catalyst with SBA-15/TiO2 serving as carrier and preparing method thereof |
-
2016
- 2016-08-31 CN CN201610800065.3A patent/CN106492884A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110274607A1 (en) * | 2010-05-04 | 2011-11-10 | Technical University Of Denmark | Vanadia-supported zeolites for scr of no by ammonia |
| CN103861628A (en) * | 2012-12-14 | 2014-06-18 | 上海郎特电力环保科技有限公司 | Flue-gas denitration catalyst incapable of being deactivated by basic metallic oxides, preparation method thereof and applications thereof |
| CN105688974A (en) * | 2016-01-11 | 2016-06-22 | 大唐南京环保科技有限责任公司 | Denitration catalyst with SBA-15/TiO2 serving as carrier and preparing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张志刚等: "凹凸棒石负载MnOx和FeOx催化剂催化还原NO的性能", 《建材世界》 * |
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