CN106474918A - Application in denitration for the catalyst with attapulgite as carrier - Google Patents
Application in denitration for the catalyst with attapulgite as carrier Download PDFInfo
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- CN106474918A CN106474918A CN201610782307.0A CN201610782307A CN106474918A CN 106474918 A CN106474918 A CN 106474918A CN 201610782307 A CN201610782307 A CN 201610782307A CN 106474918 A CN106474918 A CN 106474918A
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- 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
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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
- 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
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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
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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses application in denitration for the catalyst with attapulgite as carrier, this 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, reaction after ageing, that is, carrier is obtained；By MoO2、Cr2O3、MnO2、SnO2、ZrO2And after heteropoly acid mixes, adding above-mentioned carrier, dipping is obtained catalyst.Advantage is that this 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
The invention belongs to catalyst field, application in denitration for the catalyst more particularly, to attapulgite as carrier.
Background technology
Nitrogen oxides are very serious to the pollution of environment, and nitrogen oxides are the basis of nitric acid type acid rain, are to form light again
One of chemical fumes, the main matter 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 the discharge capacity of its nitrogen oxides being controlled in thermal power plant and industrial furnace De-NO_x, its
The denitration of middle selective catalytic reduction (SCR) is one of most widely used, gas denitrifying technology that technology is the most ripe in the world,
Its technological core is to employ denitrating catalyst, has the advantages that reaction temperature is relatively low, purifying rate is high, reliable.Flat board
Formula catalyst is a very important class in this kind of catalyst, has the higher market share.
The mechanical performance of denitrating catalyst is used for the life-span and has 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, thus greatly shortening catalyst life.Additionally, China will welcome big rule
The inactivation denitrating catalyst regeneration market of mould, the regeneration of inactivation denitrating catalyst is not only advantageous to environmental conservation, saves material,
Realize the cycling and reutilization of resource, and reduce denitration cost, avoid causing the two of the serious waste of resource and environment simultaneously
Secondary pollution, State Council exists《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, the phenomenons such as serious peeling are occurred to will be unable to carry out in use
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 application in denitration for the catalyst with attapulgite as carrier.
Technical scheme：The denitrating catalyst with attapulgite as carrier for the present invention, includes the following raw material by weight：Recessed
Convex rod stone 100-120 part, MoO210-30 part, Cr2O35-20 part, MnO220-30 part, SnO22-12 part, ZrO29-27 part,
Lubricant 17-35 part and heteropoly acid 6-15 part.Preferably, the parts by weight of lubricant can be 25-32 part, and it at least includes polyureas
One of 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 part, and it may include 12- tungstophosphoric acid, 12- tungstosilicic acid or 12- molybdenum silicic acid；The parts by weight of attapulgite
For 105-115 part；MoO2Parts by weight be 15-25 part.
The method of the denitrating catalyst with attapulgite as carrier for the present invention preparation comprises the steps：
(1) attapulgite is added in electrolyte solution and impregnate, after ageing 15-35h, mixed liquor is transferred to water heating kettle
In, then react 12-15h under the conditions of 120-160 DEG C, through filtering, washing, be dried, after roasting, that is, Attapulgite carrier be obtained；
(2) weigh MoO by weight2、Cr2O3、MnO2、SnO2、ZrO2, lubricant and heteropoly acid, by MoO2、Cr2O3、
MnO2、SnO2、ZrO2And after heteropoly acid mixes, add above-mentioned prepared carrier, dipping, prepared denitrating catalyst slurry, this is starched
Material is mixed with lubricant, drying, after roasting, that is, denitrating catalyst is obtained.
The aforesaid catalyst with attapulgite as carrier is in the application in denitration also within protection scope of the present invention.
Beneficial effect：Compared with prior art, the remarkable advantage of the present invention is：This denitrating catalyst has relatively low rising and lives
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
With reference to embodiment, technical scheme is described further.
Embodiment 1
Raw material：105 parts of attapulgite, MoO215 parts, Cr2O315 parts, MnO225 parts, SnO28 parts, ZrO220 parts, poly-
32 parts of urea grease and 10 parts of 12- tungstophosphoric acid.
Preparation method：(1) attapulgite is added in electrolyte solution and impregnate, after ageing 20h, mixed liquor is transferred to water
In hot kettle, then react 13h under the conditions of 130 DEG C, through filtering, washing, be dried, after roasting, that is, Attapulgite carrier be obtained；
(2) weigh MoO by weight2、Cr2O3、MnO2、SnO2、ZrO2, polyurea grease and 12- tungstophosphoric acid, will
MoO2、Cr2O3、MnO2、SnO2、ZrO2And after 12- tungstophosphoric acid mixes, add above-mentioned prepared carrier, dipping, prepared denitration catalyst
Agent slurry, this slurry is mixed with lubricant, is coated on rustless steel steel mesh, 4h is dried 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,
25 parts of lubricant and 15 parts of 12- tungstosilicic acid, wherein, lubricant is epoxy resin and polyacrylate.
Preparation method：(1) attapulgite is added in electrolyte solution and impregnate, after ageing 30h, mixed liquor is transferred to water
In hot kettle, then react 14h under the conditions of 140 DEG C, through filtering, washing, be dried, after roasting, that is, Attapulgite carrier be obtained；
(2) weigh MoO by weight2、Cr2O3、MnO2、SnO2、ZrO2, lubricant and 12- tungstosilicic acid, by MoO2、
Cr2O3、MnO2、SnO2、ZrO2And after 12- tungstosilicic acid mixes, add above-mentioned prepared carrier, dipping, prepared denitrating catalyst slurry
Material, this slurry is mixed with lubricant, is coated on rustless steel steel mesh, 3h is dried at 110 DEG C, roasts under 430 DEG C of air atmospheres
Burn 12h, 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
17 parts of lubrication prescription and 15 parts of 12- molybdenum silicic acid, wherein, lubricant is fatty acid amide and Oleic acid.
Preparation method：(1) attapulgite is added in electrolyte solution and impregnate, after ageing 15h, mixed liquor is transferred to water
In hot kettle, then react 12h under the conditions of 120 DEG C, through filtering, washing, be dried, after roasting, that is, Attapulgite carrier be obtained；
(2) by MoO2、Cr2O3、MnO2、SnO2、ZrO2And after 12- molybdenum silicic acid mixes, add above-mentioned prepared carrier, leaching
Stain, prepared denitrating catalyst slurry, this slurry is mixed with lubricant, is coated on rustless steel steel mesh, at 95 DEG C, 6h is dried,
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
35 parts of lubrication prescription and 6 parts of 12- molybdenum silicic acid, wherein, lubricant is carboxylic acid, esters of silicon acis and fluorocarbon oil.
Preparation method：(1) attapulgite is added in electrolyte solution and impregnate, after ageing 35h, mixed liquor is transferred to water
In hot kettle, then react 15h under the conditions of 160 DEG C, through filtering, washing, be dried, after roasting, that is, Attapulgite carrier be obtained；
(2) by MoO2、Cr2O3、MnO2、SnO2、ZrO2And after 12- molybdenum silicic acid mixes, add above-mentioned prepared carrier, leaching
Stain, prepared denitrating catalyst slurry, this slurry is mixed with lubricant, is coated on rustless steel steel mesh, at 95 DEG C, 6h is dried,
Roasting 10h under 410 DEG C of air atmospheres, that is, be obtained denitrating catalyst.
The denitrating catalyst of embodiment 1-4 preparation is put in fixed-bed micro-reactor and is evaluated, in this reactor
Temperature be 400 DEG C, simulated flue gas consist of NO concentration be 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 the denitrating catalyst that 1-4 is obtained implemented by table 1
As shown in Table 1, not only denitration efficiency is high for the denitrating catalyst that embodiment 1-4 is obtained, and it has relatively low rising and lives
Temperature, heat-flash stability and hydrothermal stability are strong, its active temperature windows width, life-span length simultaneously.
Claims (7)
1. application in denitration for the catalyst with attapulgite as carrier is it is characterised in that it includes following parts by weight
Component：
Attapulgite 100-120 part, MoO210-30 part, Cr2O35-20 part, MnO220-30 part, SnO22-12 part, ZrO2
9-27 part, lubricant 17-35 part and heteropoly acid 6-15 part.
2. according to claim 1 application it is characterised in that：Described lubricant at least includes polyurea grease, asphalt mixtures modified by epoxy resin
One of fat, polyacrylate, fatty acid amide, Oleic acid, carboxylic acid, esters of silicon acis or fluorocarbon oil.
3. according to claim 1 application it is characterised in that：Described heteropoly acid include 12- tungstophosphoric acid, 12- tungstosilicic acid or
12- molybdenum silicic acid.
4. according to claim 1 application it is characterised in that：The parts by weight of described attapulgite are 105-115 part.
5. according to claim 1 application it is characterised in that：Described MoO2Parts by weight be 15-25 part.
6. according to claim 1 application it is characterised in that：The parts by weight of described lubricant are 25-32 part.
7. according to claim 1 application it is characterised in that：The parts by weight of described heteropoly acid are 10-15 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610782307.0A CN106474918A (en) | 2016-08-31 | 2016-08-31 | Application in denitration for the catalyst with attapulgite as carrier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610782307.0A CN106474918A (en) | 2016-08-31 | 2016-08-31 | Application in denitration for the catalyst with attapulgite as carrier |
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| CN106474918A true CN106474918A (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610782307.0A Withdrawn CN106474918A (en) | 2016-08-31 | 2016-08-31 | Application in denitration for the catalyst with attapulgite as carrier |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929586A (en) * | 1988-06-09 | 1990-05-29 | W. R. Grace & Co.-Conn. | Catalysts for selective catalytic reduction DeNOx technology |
| CN103025427A (en) * | 2010-04-13 | 2013-04-03 | 美礼联无机化工公司 | Vanadia-based denox catalysts and catalyst supports |
| 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 |
| CN105396579A (en) * | 2015-12-22 | 2016-03-16 | 盐城工学院 | Fire coal flue gas denitration demercuration catalyst and preparation method and application 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 CN201610782307.0A patent/CN106474918A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929586A (en) * | 1988-06-09 | 1990-05-29 | W. R. Grace & Co.-Conn. | Catalysts for selective catalytic reduction DeNOx technology |
| CN103025427A (en) * | 2010-04-13 | 2013-04-03 | 美礼联无机化工公司 | Vanadia-based denox catalysts and catalyst supports |
| 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 |
| CN105396579A (en) * | 2015-12-22 | 2016-03-16 | 盐城工学院 | Fire coal flue gas denitration demercuration catalyst and preparation method and application 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 |
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Application publication date: 20170308 |