CN106732703A - One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof - Google Patents
One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof Download PDFInfo
- Publication number
- CN106732703A CN106732703A CN201611166340.7A CN201611166340A CN106732703A CN 106732703 A CN106732703 A CN 106732703A CN 201611166340 A CN201611166340 A CN 201611166340A CN 106732703 A CN106732703 A CN 106732703A
- Authority
- CN
- China
- Prior art keywords
- weight portions
- mixing
- mixings
- titanium tungsten
- cement
- 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.)
- Pending
Links
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
- 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
- B01J27/195—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium or tantalum
- B01J27/198—Vanadium
- B01J27/199—Vanadium with chromium, molybdenum, tungsten or polonium
-
- 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
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
It is used for smoke denitration of cement plant Ti-base catalyst the present invention relates to one kind, the raw material for preparing the catalyst includes：The titanium tungsten powder of 800 1000 weight portions, the titanium tungsten silica flour of 100 150 weight portions, the niobium oxalate of 35 weight portions, the phosphate of 58 weight portions, the molybdate of 9 12 weight portions, the ammonium metavanadate of 50 70 weight portions.The invention further relates to the preparation method of above-mentioned catalyst.Denitrating catalyst prepared by the present invention, with titanium dioxide as carrier, load niobium oxalate, phosphate and molybdate are activated centre, the catalyst has catalysis activity at 150 250 DEG C, the characteristics of being adapted to cement flue-gas temperature, and catalyst can be prevented to be poisoned in the case of high-sulfur, and catalyst blockage is prevented, increase catalyst life.
Description
Technical field
The invention belongs to catalyst technology and environmental protection technical field, it is related to a kind of technology of preparing of denitrating catalyst,
More particularly to it is a kind of for smoke denitration of cement plant Ti-base catalyst and preparation method thereof.
Background technology
China as world's cement major producing country, China, close to 2,500,000,000 tons, accounts for the world in the cement output of 2014
More than half of yield.Annual about 2,000,000 tons of the nitrogen oxides of discharge in cement production process, accounts for national nitrogen oxides industry
15% or so of discharge capacity, is the third-largest discharged nitrous oxides source after relay power, vehicle exhaust.Meanwhile, " the 12 " phase
Between, the discharge of nitrogen oxides is put into the binding indicator system first.As country enters one for the dynamics of air contaminant treatment
Step is increased, and is also faced with for the discharge standard of cement industry and further tightened up.Especially capital Beijing, controls as air pollution
The key cities of reason, it must not be higher than 200mg/m to perform cement manufacturers discharged nitrous oxides in 1 day January in 20163It is new
Standard.
Existing cement production enterprise denitration uses SNCR (SNCR) technology substantially, will mass concentration 25%~
30% ammoniacal liquor, kiln suitable temperature region-cyclone separator (760~950 DEG C), mist are injected directly into by atomization spray system
Ammonia and nitrogen oxides (NO, NO after change2Deng mixture) SNCR reaction is carried out, by conversion of nitrogen oxides into nothing
The N of pollution2.Be mainly characterized by simple denitrification apparatus, technical maturity stabilization, the one-time investment of this technology are reduced, main face
The problem faced is because process limitation causes denitration efficiency (up to about 50%) not high and operating cost (ammoniacal liquor consumption higher
Amount is larger).In face of 200mg/m3New standard when seem unable to do what one wishes.
SCR is a kind of industrial most widely used denitration technology, famous with removal of nitrogen oxide efficiency high：Perfect condition
Under, the removal efficiency of nitrogen oxides up to more than 90% can be made, it is injected to ammonia in flue gas almost completely and reaction of nitrogen oxides, it is mesh
Preceding best stationary source denitration Treatment process.Discharged nitrous oxides value 50mg/Nm is performed in power industry3In the case of, still may be used
To realize emission request well.
Catalyst it is current it is most commonly used be porous Ti2O5(carrier) makes cellular modularization, and carrier surface has been covered with
The active component V of catalytic action2O5And WO3, reaction temperature is preferred at 280 DEG C~400 DEG C.And in new type nonaqueous cement production line
In, the temperature of preheater outlet is advanced to have dropped down to less than 300 DEG C, while to implement national energy-saving consumption reduction policy, China
The production line of more than 2500t/d generally installs waste heat boiler additional, and at 150 DEG C or so, this is also carried its delivery temperature to denitrating catalyst
New challenge is gone out, can at a lower temperature reach more than 80% denitration efficiency, so developing low temperature is adapted to water
The catalyst of mud industry is a new problem.
The content of the invention
For the technical problem that cement denitrating flue gas in cement production process are present, the present invention provides a kind of for cement cigarette
Qi exhaustion nitre Ti-base catalyst, the catalyst still has denitration efficiency higher at low temperature, while sulphur conversion ratio ＜ 0.5%.
Specifically, the present invention provides a kind of for cement denitrating flue gas Ti-base catalyst, it is characterised in that raw material includes：
The titanium tungsten powder of 800-1000 weight portions, the titanium tungsten silica flour of 100-150 weight portions, the niobium oxalate of 3-5 weight portions, 5-8 weight portions
Phosphate, the molybdate of 9-12 weight portions, the ammonium metavanadate of 50-70 weight portions.
Preferably, phosphate is selected from sodium phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium metaphosphate, sodium tripolyphosphate etc.；
It is preferred that sodium tripolyphosphate.
Preferably, molybdate is selected from sodium molybdate, potassium molybdate.
In a specific embodiment of the invention, raw material also includes：The mass concentration of 3-5 weight portions is 50% breast
Acid, the mass concentration of the stearic acid, the deionized water of 330-450 weight portions and 125-180 weight portions of 5-8 weight portions is 25%
Ammoniacal liquor.
In a specific embodiment of the invention, raw material also includes：The glass fibre of 40-60 weight portions, 3-5 weight
The wood pulp cotton of part, 40-60 weight portion MEAs.
In a specific embodiment of the invention, sodium carboxymethylcellulose of the raw material also including 1-6 weight portions and
The polyethylene glycol oxide of 2.2-4.5 weight portions.
In one preferred embodiment of the invention, the titanium tungsten powder is added in three times in mixing step.
In presently preferred implementation method, the mass concentration is that 25% ammoniacal liquor is added in four times.
In presently preferred implementation method, the catalyst is made up of following raw materials：800-1000 weight
The titanium tungsten powder of part, the titanium tungsten silica flour of 100-150 weight portions, the niobium oxalate of 3-5 weight portions, the phosphate of 5-8 weight portions, 9-12 weights
The molybdate of part, the ammonium metavanadate solution of 50-70 weight portions are measured, the mass concentration of 3-5 weight portions is 50% lactic acid, 5-8 weights
The stearic acid of part is measured, the deionized water of 330-450 weight portions, the mass concentration of 125-180 weight portions is 25% ammoniacal liquor, 40-
The glass fibre of 60 weight portions, the wood pulp cotton of 3-5 weight portions, the MEA of 40-60 weight portions, the carboxymethyl of 1-6 weight portions
The polyethylene glycol oxide of sodium cellulosate and 2.2-4.5 weight portions.
Another aspect of the present invention is to provide a kind of preparation method for cement denitrating flue gas Ti-base catalyst, its feature
It is that raw material includes：The titanium tungsten powder of 800-1000 weight portions, the titanium tungsten silica flour of 100-150 weight portions, the oxalic acid of 3-5 weight portions
Niobium, the phosphate of 5-8 weight portions, the molybdate of 9-12 weight portions, the ammonium metavanadate of 50-70 weight portions；The titanium tungsten powder is mixed
Added in three times in refining step.
Specifically, in a specific embodiment of the invention, including mixing, extrusion, dry, calcining step, its
Middle mixing step includes once mixing, secondary mixing, three mixings, and the titanium tungsten powder of 300-400 weight portions is added in once kneading,
The titanium tungsten powder of 250-300 weight portions is added in secondary mixing, three mixings add the titanium tungsten powder of 250-300 weight portions.
In a specific embodiment of the invention, once knead：By the titanium tungsten powder of 300-400 weight portions, 100-150
The titanium tungsten silica flour of weight portion is kneaded in being put into kneading machine, adds the niobium oxalate of 3-5 weight portions, the phosphoric acid of 5-8 weight portions
Salt, the molybdate of 9-12 weight portions, the mass concentration of 3-5 weight portions is 50% lactic acid, stearic acid, the 200- of 5-8 weight portions
The deionized water of 250 weight portions and the ammoniacal liquor that the mass concentration of 50-70 weight portions is 25% are kneaded.
In a specific embodiment of the invention, secondary mixing：After once kneading, by the titanium of 250-300 weight portions
Tungsten powder, 40-60 parts of deionized water, the mass concentration of 15-20 weight portions is that 25% ammoniacal liquor is added to once mixing and obtains
Kneaded in batch mixing；Three mixings：After secondary mixing, by the titanium tungsten powder of 250-300 weight portions and the quality of 40-60 weight portions
Concentration is that 25% ammoniacal liquor is added to secondary mixing and kneaded in the batch mixing that obtains.
In a specific embodiment of the invention, mixing also includes four mixings, five mixings, wherein four times mixed
Refining：After three mixings, by the glass fibre of 40-60 weight portions, 3-5 weight portion wood pulp cottons, the MEA of 40-60 weight portions,
The ammonium metavanadate solution of 50-70 weight portions, the deionized water of 50-80 weight portions is carried out in being added to the batch mixing that three mixings are obtained
Mixing；Five mixings：After four mixings, by the sodium carboxymethylcellulose of 1-6 weight portions and the polyoxyethylene of 2.2-4.5 weight portions
Alkene, the mass concentration of 20-30 weight portions is that 25% ammoniacal liquor and the deionized water of 40-60 weight portions are added to four mixings and obtain
Batch mixing in kneaded.
In one preferred embodiment of the invention, prepared by ammonium metavanadate solution, is added in ammonium metavanadate retort
The MEA of the deionized water of 100 weight portions and 12 weight portions, when temperature >=90 DEG C, adds ammonium metavanadate (AMV) 10 weight
Amount part, continues to be heated to temperature and is shown as 98 ± 2 DEG C, and keep at least 50min.
In one preferred embodiment of the invention, each mixing time is 10-40 minutes.
In one preferred embodiment of the invention, drying includes：Primary drying, 25-55 DEG C of temperature, humidity 20-
80%, drying time is 8-10 days；Redrying, temperature is 65-70 DEG C, is dried 2-3 days.
In one preferred embodiment of the invention, calcining includes that 200-30 DEG C is calcined 5-8 hours, and 600-700 DEG C is forged
Burn 5-8 hours.
In a specific embodiment of the invention, the preparation method includes：Mixing, extrusion is dried, calcining step
Suddenly；
(1) mixing step：
Once knead：The titanium tungsten powder of 300-400 weight portions, the titanium tungsten silica flour of 100-150 weight portions are put into kneading machine
Kneaded, added the niobium oxalate of 3-5 weight portions, the phosphate of 5-8 weight portions, the molybdate of 9-12 weight portions, 3-5 weight
Part mass concentration be 50% lactic acid, the stearic acid of 5-8 weight portions, the deionized water of 200-250 weight portions and 50-70 weight
Part mass concentration be that 25% ammoniacal liquor is kneaded；
Secondary mixing：After once kneading, by the titanium tungsten powder of 250-300 weight portions, 40-60 parts of deionized water, 15-20 weights
Measure part mass concentration be 25% ammoniacal liquor be added to the batch mixing for once kneading and obtaining in kneaded；
Three mixings：After secondary mixing, the mass concentration by the titanium tungsten powder of 250-300 weight portions and 40-60 weight portions is
25% ammoniacal liquor is kneaded in being added to the secondary batch mixing for kneading and obtaining；
Four mixings：After three mixings, by the glass fibre of 40-60 weight portions, 3-5 weight portion wood pulp cottons, 40-60 weight
The MEA of part, the ammonium metavanadate solution of 50-70 weight portions, the deionized water of 50-80 weight portions is added to three times and kneads
To batch mixing in kneaded；
Five mixings：After four mixings, by the sodium carboxymethylcellulose of 1-6 weight portions and the polyoxy of 2.2-4.5 weight portions
Change ethene, the mass concentration of 20-30 weight portions is that 25% ammoniacal liquor and the deionized water of 40-60 weight portions are added to four mixings
Kneaded in the batch mixing for obtaining；
Each mixing time is 10-40 minutes；
(2) extrusion step：Filtered during batch mixing is added into filter, pre-extruded in pre-extruded machine is added to after filtering, it is rearmounted
It is extruded as in extruder cellular；It is old 10-15 hours；
(3) drying steps：
Primary drying, 25-55 DEG C of temperature, humidity 20-80%, drying time is 8-10 days；
Redrying, temperature is 65-70 DEG C, is dried 2-3 days；
(4) calcining step
200-300 DEG C is calcined 5-8 hours, and 600-700 DEG C is calcined 5-8 hours.
Beneficial effect：Two kinds of carriers of titanium tungsten powder and titanium tungsten silica flour are used in the present invention, while titanium tungsten powder is added in three times, greatly
The surface area of carrier and the dispersing uniformity of active component are improve greatly, and then improve catalysis activity.Simultaneously in the present invention,
Using repeatedly mixing, various raw materials are added stage by stage, make fully to be reacted between various materials, improve catalysis activity, while
The active temperature windows of denitrating catalyst are widened.Niobium oxalate, phosphate and molybdate are added in the present invention simultaneously so that catalysis
Agent still has activity higher at low temperature.The denitrating catalyst that the present invention is prepared has compressive resistance high, making side
Method is ripe, and easy-formation is simple to operation, and denitration efficiency is up to more than 90%, and sulphur conversion ratio ＜ 0.5% at low temperature.
Weight portion of the invention can simultaneously replace known unit of weight, such as gram, kilogram, kilogram etc..
Specific embodiment
The present invention is further specifically described by the following examples, and these embodiments are only used for the purpose for illustrating, and
Do not limit the scope of the invention.
Embodiment 1
(1) mixing step：
Once knead：320kg titanium tungsten powder, 100kg titanium tungstens silica flour are added in kneading machine, 100rpm operation kneading machines, then
Add 3kg niobium oxalates, 4kg sodium tripolyphosphates, 9kg sodium molybdates, 3kg mass concentrations are 50% lactic acid, the stearic acid of 5kg,
The mass concentration of 200kg deionized waters and 50kg is 25% ammoniacal liquor, and by above material mixing, 500rpm runs at high speed kneading machine
10min；
Secondary mixing：After once kneading, by 250kg titanium tungsten powder, 40kg deionized waters, 15kg mass concentrations are 25% ammonia
Water is kneaded in being added to the batch mixing for once kneading and obtaining, and 500rpm runs at high speed kneading machine 20min；
Three mixings：After secondary mixing, 250kg titanium tungstens powder and ammoniacal liquor that 40kg mass concentrations are 25% are added to secondary
Kneaded in the batch mixing that obtains of mixing, 500rpm kneading machine to the material moistures that run at high speed are less than 24%；
Four mixings：After three mixings, by 40kg glass fibres, 3kg wood pulp cottons, 40kg MEAs, 50kg deionizations
Water, the ammonium metavanadate solution that 50kg is configured is kneaded in being added to the batch mixing that three mixings are obtained, and 500rpm runs at high speed
Kneading machine 30min；
Five mixings：After four mixings, by 2kg sodium carboxymethylcelluloses and 2.2kg polyethylene glycol oxides, 20kg parts of quality is dense
The ammoniacal liquor and 40kg deionized waters spent for 25% are kneaded in being added to the batch mixing that four mixings are obtained, and 500rpm runs at high speed
Kneading machine 20min.The moisture and pH of material are adjusted, moisture is 25-18%, and pH is more than 7.5；
(2) extrusion step：
Will batch mixing add filter in filter, pre-extruded in pre-extruded machine is added to after filtering, after be placed in extruder squeeze
Go out as cellular (20 × 20 hole)；The catalyst of extrusion is cut, and meets the length of formulation；By the catalyst of extrusion molding
It is put on pallet, is put in old 12 hours in hothouse；
(3) drying steps：
Primary drying, 20 DEG C of temperature, humidity 30%, drying time is 8 days；
Redrying, temperature is 62 DEG C, is dried 2 days, is dried after catalyst weight is no longer reduced and stopped；
(4) calcining step：
200 DEG C are calcined 5 hours, and 650 DEG C are calcined 6 hours；
It is prepared by the ammonium metavanadate solution：The deionized water of 100kg and the list of 12kg are added in ammonium metavanadate retort
Monoethanolamine, when temperature >=90 DEG C, adds ammonium metavanadate (AMV) 10kg, continues to be heated to temperature to be shown as 98 ± 2 DEG C, and protect
Hold at least 50min.
Embodiment 2
(1) mixing step：
Once knead：360kg titanium tungsten powder, 120kg titanium tungstens silica flour are added in kneading machine, 100rpm operation kneading machines, then
Add 4kg niobium oxalates, 6kg sodium tripolyphosphates, 10kg sodium molybdates, 4kg mass concentrations are 50% lactic acid, 4kg stearic acid,
220kg deionized waters and the ammoniacal liquor that 60kg mass concentrations are 25%, by above material mixing, 500rpm runs at high speed kneading machine
10min；
Secondary mixing：After once kneading, by 270kg titanium tungsten powder, 50kg deionized waters, 18kg mass concentrations are 25% ammonia
Water is kneaded in being added to the batch mixing for once kneading and obtaining, and 500rpm runs at high speed kneading machine 20min；
Three mixings：After secondary mixing, 270kg titanium tungstens powder and ammoniacal liquor that 50kg mass concentrations are 25% are added to secondary
Kneaded in the batch mixing that obtains of mixing, 500rpm kneading machine to the material moistures that run at high speed are less than 24%；
Four mixings：After three mixings, by 50kg glass fibres, 4kg wood pulp cottons, 50kg MEAs, 60kg deionizations
Water, the ammonium metavanadate solution that 60kg is configured is kneaded in being added to the batch mixing that three mixings are obtained, and 500rpm runs at high speed
Kneading machine 30min；
Five mixings：After four mixings, by 3kg sodium carboxymethylcelluloses and 3.2kg polyethylene glycol oxides, 25kg mass concentrations
Ammoniacal liquor and 50kg deionized waters for 25% are added to knead for four times and kneaded in the batch mixing that obtains, and 500rpm runs at high speed mixed
Mill 20min.The moisture and pH of material are adjusted, moisture is 25-18%, and pH is more than 7.5；
(2) extrusion step：
Will batch mixing add filter in filter, pre-extruded in pre-extruded machine is added to after filtering, after be placed in extruder squeeze
Go out as cellular (20 × 20 hole)；The catalyst of extrusion is cut, and meets the length of formulation；By the catalyst of extrusion molding
It is put on pallet, is put in old 12 hours in hothouse；
(3) drying steps：
Primary drying, 40 DEG C of temperature, humidity 50%, drying time is 9 days；
Redrying, temperature is 63 DEG C, is dried 2.5 days, is dried after catalyst weight is no longer reduced and stopped；
(4) calcining step：
250 DEG C are calcined 5.5 hours, and 675 DEG C are calcined 7 hours；
It is prepared by the ammonium metavanadate solution：100kg deionized waters and 12kg monoethanols are added in ammonium metavanadate retort
Amine, when temperature >=90 DEG C, adds ammonium metavanadate (AMV) 10kg, continues to be heated to temperature and is shown as 98 ± 2 DEG C, and keeps extremely
Few 50min.
Embodiment 3
(1) mixing step：
Once knead：400kg titanium tungsten powder, 150kg titanium tungstens silica flour are added in kneading machine, 100rpm operation kneading machines, then
Add 5kg niobium oxalates, 8kg sodium tripolyphosphates, 12kg sodium molybdates, 5kg mass concentrations are 50% lactic acid, 8kg stearic acid,
250kg deionized waters and the ammoniacal liquor that 70kg mass concentrations are 25%, by above material mixing, 500rpm runs at high speed kneading machine
10min；
Secondary mixing：After once kneading, by 300kg titanium tungsten powder, 60kg deionized waters, 20kg mass concentrations are 25% ammonia
Water is kneaded in being added to the batch mixing for once kneading and obtaining, and 500rpm runs at high speed kneading machine 20min；
Three mixings：After secondary mixing, 300kg titanium tungstens powder and ammoniacal liquor that 60kg mass concentrations are 25% are added to secondary
Kneaded in the batch mixing that obtains of mixing, 500rpm kneading machine to the material moistures that run at high speed are less than 24%；
Four mixings：After three mixings, by 60kg glass fibres, 5kg wood pulp cottons, 60kg MEAs, 60kg deionizations
Water, the ammonium metavanadate solution that 70kg is configured is kneaded in being added to the batch mixing that three mixings are obtained, and 500rpm runs at high speed
Kneading machine 30min；
Five mixings：After four mixings, by 6kg sodium carboxymethylcelluloses and 4.5kg polyethylene glycol oxides, 30kg mass concentrations
Ammoniacal liquor and 60kg deionized waters for 25% are added to knead for four times and kneaded in the batch mixing that obtains, and 500rpm runs at high speed mixed
Mill 20min；The moisture and pH of material are adjusted, moisture is 25-18%, and pH is more than 7.5；
(2) extrusion step：
Will batch mixing add filter in filter, pre-extruded in pre-extruded machine is added to after filtering, after be placed in extruder squeeze
Go out as cellular (20 × 20 hole)；The catalyst of extrusion is cut, and meets the length of formulation；By the catalyst of extrusion molding
It is put on pallet, is put in old 12 hours in hothouse；
(3) drying steps：
Primary drying, 55 DEG C of temperature, humidity 70%, drying time is 10 days；
Redrying, temperature is 65 DEG C, is dried 3 days, is dried after catalyst weight is no longer reduced and stopped；
(4) calcining step：
300 DEG C are calcined 6 hours, and 700 DEG C are calcined 8 hours；
It is prepared by the ammonium metavanadate solution：100kg deionized waters and 12kg monoethanols are added in ammonium metavanadate retort
Amine, when temperature >=90 DEG C, adds ammonium metavanadate (AMV) 10kg, continues to be heated to temperature and is shown as 98 ± 2 DEG C, and keeps extremely
Few 50min.
Comparative example 1 (omission niobium oxalate)
Once knead：320kg titanium tungsten powder, 100kg titanium tungstens silica flour are added in kneading machine, 100rpm operation kneading machines, then
Add 4kg sodium tripolyphosphates, 9kg sodium molybdates, 3kg mass concentrations are 50% lactic acid, 5kg stearic acid, 200kg deionized waters and
50kg mass concentrations are 25% ammoniacal liquor, and by above material mixing, 500rpm runs at high speed kneading machine 10min；
Other are with embodiment 1.
Comparative example 2 (omission phosphate)
Once knead：320kg titanium tungsten powder, 100kg titanium tungstens silica flour are added in kneading machine, 100rpm operation kneading machines, then
3kg niobium oxalates are added, 9kg sodium molybdates, 3kg mass concentrations are 50% lactic acid, 5kg stearic acid, 200kg deionized waters and 50kg
Mass concentration is 25% ammoniacal liquor, and by above material mixing, 500rpm runs at high speed kneading machine 10min；
Other are with embodiment 1.
Comparative example 3 (omission molybdate)
Once knead：320kg titanium tungsten powder, 100kg titanium tungstens silica flour are added in kneading machine, 100rpm operation kneading machines, then
The niobium oxalate of 3kg is added, 4kg sodium tripolyphosphates, 3kg mass concentrations are 50% lactic acid, 5kg stearic acid, 200kg deionized waters
And the ammoniacal liquor that 50kg mass concentrations are 25%, by above material mixing, 500rpm runs at high speed kneading machine 10min；
Other are with embodiment 1.
The performance test of embodiment 4
At a temperature of 150-200 DEG C, by the simulated flue gas of nitrogen oxides and sulfur dioxide be passed through above-described embodiment 1-3 with
And in the catalyst sample of comparative example 1-3 preparations, denitration efficiency is tested, as a result as shown in table 1.
The performance test results of catalyst prepared by the embodiment of the present invention of table 1 and comparative example
Claims (10)
1. it is a kind of to be used for cement denitrating flue gas Ti-base catalyst, it is characterised in that the raw material for preparing the catalyst includes：Titanium tungsten powder
800-1000 weight portions, titanium tungsten silica flour 100-150 weight portions, niobium oxalate 3-5 weight portions, phosphate 5-8 weight portions, molybdate 9-
12 weight portions, ammonium metavanadate 50-70 weight portions.
2. cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 1, and wherein raw material also includes：Mass concentration is
50% lactic acid 3-5 weight portions, stearic acid 5-8 weight portions, deionized water 330-450 weight portions and the ammonia that mass concentration is 25%
Water 125-180 weight portions.
3. cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 1, and raw material also includes：Glass fibre 40-60 weights
Amount part, wood pulp cotton 3-5 weight portions, MEA 40-60 weight portions.
4. cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 1, and raw material also includes sodium carboxymethylcellulose 1-6
Weight portion and polyethylene glycol oxide 2.2-4.5 weight portions.
5. cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 1, and the titanium tungsten powder is added in three times.
6. the preparation method for cement denitrating flue gas Ti-base catalyst as described in claim any one of 1-5, its feature exists
In including mixing, extrusion is dried, and calcining step, the titanium tungsten powder is added in three times in mixing step.
7. the preparation method of cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 6, and wherein mixing step includes
Once mixing, secondary mixing, three mixings, add the titanium tungsten powder of 300-400 weight portions in once kneading, and are added in secondary mixing
The titanium tungsten powder of 250-300 weight portions, three mixings add the titanium tungsten powder of 250-300 weight portions.
8. the preparation method of cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 7, and the once mixing is：Will
The titanium tungsten powder of 300-400 weight portions, the titanium tungsten silica flour of 100-150 weight portions is kneaded in being put into kneading machine, adds 3-5 weights
The niobium oxalate of amount part, the phosphate of 5-8 weight portions, the molybdate of 9-12 weight portions, the mass concentration of 3-5 weight portions is 50%
Lactic acid, the mass concentration of the stearic acid, the deionized water of 200-250 weight portions and 50-70 weight portions of 5-8 weight portions is 25%
Ammoniacal liquor is kneaded.
9. the preparation method of cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 7, and the secondary mixing is：One
After secondary mixing, by the titanium tungsten powder of 250-300 weight portions, 40-60 parts of deionized water, 15-20 weight portions mass concentration is 25%
Ammoniacal liquor be added to the batch mixing for once kneading and obtaining in kneaded；Three mixings：After secondary mixing, by 250-300 weight portions
Titanium tungsten powder and the mass concentration of 40-60 weight portions be that 25% ammoniacal liquor is added to secondary mixing and mixed in the batch mixing that obtains
Refining.
10. the preparation method of cement denitrating flue gas Ti-base catalyst is used for as claimed in claim 7, also kneaded including four times,
Five mixings, wherein four mixings：After three mixings, by the glass fibre of 40-60 weight portions, 3-5 weight portion wood pulp cottons, 40-
The MEA of 60 weight portions, the ammonium metavanadate solution of 50-70 weight portions, the deionized water of 50-80 weight portions is added to three times
Kneaded in the batch mixing that mixing is obtained；Five mixings：After four mixings, by the sodium carboxymethylcellulose of 1-6 weight portions and
The polyethylene glycol oxide of 2.2-4.5 weight portions, the mass concentration of 20-30 weight portions is that 25% ammoniacal liquor and 40-60 weight portions go
Ionized water is kneaded in being added to the batch mixing that four mixings are obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166340.7A CN106732703A (en) | 2016-12-16 | 2016-12-16 | One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166340.7A CN106732703A (en) | 2016-12-16 | 2016-12-16 | One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106732703A true CN106732703A (en) | 2017-05-31 |
Family
ID=58893042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611166340.7A Pending CN106732703A (en) | 2016-12-16 | 2016-12-16 | One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106732703A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693953A (en) * | 2016-12-27 | 2017-05-24 | 内蒙古华元科技有限公司 | Ti-based catalyst for coking flue gas denitrification and preparation method thereof |
| CN108126692A (en) * | 2017-12-28 | 2018-06-08 | 凯龙蓝烽新材料科技有限公司 | Good automobile-used extruded type SCR denitration of a kind of low temperature active and preparation method thereof |
| CN108993482A (en) * | 2018-08-28 | 2018-12-14 | 河南康宁特环保科技股份有限公司 | A kind of denitrating catalyst and the preparation method and application thereof |
| CN112121831A (en) * | 2020-10-30 | 2020-12-25 | 山东信能达工程科技有限公司 | Wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst and preparation method thereof |
| CN113996309A (en) * | 2021-11-23 | 2022-02-01 | 国能龙源催化剂江苏有限公司 | Preparation method of high-strength SCR catalyst for CO collaborative removal |
Citations (6)
| 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 |
| US20110250114A1 (en) * | 2010-04-13 | 2011-10-13 | Millennium Inorganic Chemicals, Inc. | Vanadia-Based DeNOx Catalysts and Catalyst Supports |
| CN104028263A (en) * | 2014-05-14 | 2014-09-10 | 无锡立信环保科技有限公司 | Preparation method for low-temperature SCR honeycomb catalyst |
| CN105126818A (en) * | 2015-08-28 | 2015-12-09 | 湖北省轻工业科学研究设计院 | Wear-resistant anti-poisoning honeycomb SCR denitration catalyst and preparation method thereof |
| CN105148904A (en) * | 2015-08-28 | 2015-12-16 | 武汉京运通环保工程有限公司 | Flue gas denitration catalyst applied at a low temperature and preparation method thereof |
| CN106000435A (en) * | 2016-05-30 | 2016-10-12 | 龙岩紫荆创新研究院 | Cellular V2O5-Pr6O11-SbPO4/TiO2 based low-temperature sulfur-resistant denitration catalyst and preparation method thereof |
-
2016
- 2016-12-16 CN CN201611166340.7A patent/CN106732703A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110250114A1 (en) * | 2010-04-13 | 2011-10-13 | Millennium Inorganic Chemicals, Inc. | Vanadia-Based DeNOx Catalysts and Catalyst Supports |
| CN103025427A (en) * | 2010-04-13 | 2013-04-03 | 美礼联无机化工公司 | Vanadia-based denox catalysts and catalyst supports |
| 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 |
| CN104028263A (en) * | 2014-05-14 | 2014-09-10 | 无锡立信环保科技有限公司 | Preparation method for low-temperature SCR honeycomb catalyst |
| CN105126818A (en) * | 2015-08-28 | 2015-12-09 | 湖北省轻工业科学研究设计院 | Wear-resistant anti-poisoning honeycomb SCR denitration catalyst and preparation method thereof |
| CN105148904A (en) * | 2015-08-28 | 2015-12-16 | 武汉京运通环保工程有限公司 | Flue gas denitration catalyst applied at a low temperature and preparation method thereof |
| CN106000435A (en) * | 2016-05-30 | 2016-10-12 | 龙岩紫荆创新研究院 | Cellular V2O5-Pr6O11-SbPO4/TiO2 based low-temperature sulfur-resistant denitration catalyst and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 翟赟等: "氨法选择性催化还原脱硝催化剂的研究", 《工业催化》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693953A (en) * | 2016-12-27 | 2017-05-24 | 内蒙古华元科技有限公司 | Ti-based catalyst for coking flue gas denitrification and preparation method thereof |
| CN108126692A (en) * | 2017-12-28 | 2018-06-08 | 凯龙蓝烽新材料科技有限公司 | Good automobile-used extruded type SCR denitration of a kind of low temperature active and preparation method thereof |
| CN108993482A (en) * | 2018-08-28 | 2018-12-14 | 河南康宁特环保科技股份有限公司 | A kind of denitrating catalyst and the preparation method and application thereof |
| CN112121831A (en) * | 2020-10-30 | 2020-12-25 | 山东信能达工程科技有限公司 | Wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst and preparation method thereof |
| CN113996309A (en) * | 2021-11-23 | 2022-02-01 | 国能龙源催化剂江苏有限公司 | Preparation method of high-strength SCR catalyst for CO collaborative removal |
| CN113996309B (en) * | 2021-11-23 | 2023-12-26 | 国能龙源催化剂江苏有限公司 | Preparation method of high-strength SCR catalyst for CO-removal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106732703A (en) | One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof | |
| CN105126818B (en) | A kind of wear-resisting anti-poisoning honeycomb fashion SCR denitration and preparation method thereof | |
| CN104841489A (en) | Rare-earth-based composite multi-component denitration and dioxin-removing catalyst and preparation method thereof | |
| CN101502796B (en) | Integral honeycomb selective catalytic reduction catalyst for flue gas denitration and method for preparing the same | |
| CN106390990B (en) | A kind of method of modifying of special type exhaust gas denitration catalyst | |
| CN102773090B (en) | Integral honeycomb denitration catalyst for WO3 addition technology and preparation method of catalyst | |
| CN106807393A (en) | A kind of low SO of low temperature2Oxygenation efficiency honeycomb type denitrification catalyst and preparation method thereof | |
| CN102583522A (en) | Preparation method for titanium dioxide serving as catalyst carrier | |
| CN102921403B (en) | Method for preparing V2O5-WO3/TiO2 powder for making denitration catalyst | |
| CN104258856B (en) | A kind of preparation method of high specific surface area porous ceramic honeycomb catalyst | |
| CN105148904A (en) | Flue gas denitration catalyst applied at a low temperature and preparation method thereof | |
| CN102327783B (en) | Method for preparing denitration catalyst carrier TiO2-WO3 composite powder | |
| CN104437608A (en) | Catalyst for performing selective catalytic reduction on nitrogen oxide by ammonia | |
| CN106621773A (en) | Ammonia-carbon combined desulfurization and denitration method for sintering flue gas | |
| CN106824168A (en) | Exhaust-gas treatment catalyst and its manufacture method | |
| CN101791549A (en) | Method for preparing formed selective catalytic reduction denitration catalyst by using ultrasonic mixing sedimentation method | |
| CN107442164A (en) | Extruded type molecular sieve honeycomb catalyst and preparation method thereof | |
| CN105080605A (en) | Preparation method for high-temperature flue gas denitrification catalyst and product of high-temperature flue gas denitrification catalyst | |
| CN106622214A (en) | Flue gas denitrification titanium-based catalyst for ceramic and preparation method of catalyst | |
| CN106732699A (en) | One kind is for coal steam-electric plant smoke denitration wide temperature range type Ti-base catalyst and preparation method thereof | |
| CN114011400A (en) | Preparation method of acid system waste incineration SCR denitration catalyst and prepared denitration catalyst | |
| CN112604487A (en) | Flue gas denitration agent for cement kiln and preparation method and application thereof | |
| CN107754833A (en) | A kind of iron-based non-toxic catalyst for middle low-temperature denitration and preparation method thereof | |
| CN106179324A (en) | A kind of honeycomb fashion cerium zirconium tungsten titanio denitrating catalyst and preparation method thereof | |
| CN108404966B (en) | Coke oven flue gas low-temperature denitration catalyst and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |