CN108727008A - It is a kind of using the retired tai-gas clean-up catalyst of automobile as water-permeable brick of base-material and preparation method thereof - Google Patents
It is a kind of using the retired tai-gas clean-up catalyst of automobile as water-permeable brick of base-material and preparation method thereof Download PDFInfo
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- CN108727008A CN108727008A CN201810616662.XA CN201810616662A CN108727008A CN 108727008 A CN108727008 A CN 108727008A CN 201810616662 A CN201810616662 A CN 201810616662A CN 108727008 A CN108727008 A CN 108727008A
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Abstract
The invention discloses a kind of using the retired tai-gas clean-up catalyst of automobile as water-permeable brick of base-material and preparation method thereof, 1 ~ 6wt component sintering additives are dissolved in a certain amount of water and form colourless transparent solution, it is sprayed on 70 ~ 95wt parts of catalyst support surfaces, 5 ~ 30wt parts of bastard coal mountain flours are sprinkled into after mixing again, continue to stir to uniformly mixed；Sintering aid dissolve amount of water be sintering aid, catalyst carrier and bastard coal mountain flour gross mass 5 ~ 10%；Extrusion forming, and fired under certain temperature and obtain water-permeable brick；The present invention using the retired tai-gas clean-up catalyst of automobile as water-permeable brick of base-material and preparation method thereof, the comprehensive utilization ratio of waste resource can be improved, meet circular economy and environmentally protective requirement, and the water-permeable brick intensity prepared is high, good water permeability, meets urban road laying quality requirement.
Description
Technical field
The present invention relates to a kind of using the retired tai-gas clean-up catalyst of automobile as water-permeable brick of base-material and preparation method thereof, belongs to
Solid waste utilizes and field of inorganic nonmetallic material.
Background technology
Vehicle exhaust is the worldwide main source of atmospheric pollution, and installation exhaust purification catalytic device is to carry out tail gas pollution
One of most effectual way of prevention；Current most common exhaust purification catalytic device is ternary cleaner, and core is three-element catalytic
Agent；It is carrier that existing cleaning catalyst for tail gases of automobiles, which generally uses ceramic honeycomb, and bigger serface is coated in carrier surface
Aluminum oxide coating layer, then supporting catalytic active ingredient, such as Chinese patent：CN00124737.9 and CN02125000.6；However, vapour
Tail gas cleaning catalyst has certain safe life；For automobile during traveling, auto-exhaust catalyst not only will be by
Discharge tail gas washes away, and will also be subjected to the temperature difference examining up to the very mal-condition such as thermal cycle, heat fatigue and thermal shock of several Baidu
It tests, so as to cause the inactivation of catalyst.
With the fast development of auto industry, abandoned car is increasing, and is mostly only limitted to the processing of abandoned car
Recycling to steel in automobile and aluminium.It is worth that higher tai-gas clean-up catalyst degree for the treatment of is relatively low, this is not only in automobile
It exerts heavy pressures on to urban environment, also limits the sustainable development of automobile industry；Currently, about the retired tail gas clean-up of automobile
The processing of catalyst is only limitted to recycle catalytic active component from catalyst, such as platinum, palladium, rhodium noble metal, and retired to automobile
The recycling of tail gas catalyzed agent carrier recycles seldom report；From the patent announced and the paper delivered, from catalyst
The method of recycling noble metal can be summarized as pyrogenic process extraction and wet underwater welding；Pyrogenic process includes plasma melting method such as Chinese patent
CN104073625B, metal method of trapping such as Chinese patent CN102534226B, chloride volatility process such as Chinese patent
CN105256145A etc.；Wet processing can be divided into again fully dissolved method such as Chinese patent CN104480312B and CN1385545A,
Active component dissolution method such as Chinese patent CN102732728B, carrier dissolution method etc.；Above method after precious metal refineries to generating
Residue or waste liquid all lack effective subsequent processing；And with the continuous development of cleaning catalyst for tail gases of automobiles, with high silicon, height
The cordierite of aluminium content is that the three-way catalyst of carrier is increasingly becoming the most common type of current auto-exhaust catalyst；But
More used catalyst supports are will produce after extracting noble metal in such cleaning catalyst for tail gases of automobiles；Therefore, how to research and develop
Going out economical and efficient and environmentally protective catalyst carrier treatment process has important scientific meaning and economic value.
With carrying forward vigorously for China's Development of China's Urbanization, city square and area of parking lots constantly expand, original city
Greenery patches is replaced by the waterproof material such as cement flooring, bituminous paving, causes city rainwater drainage unsmooth, with not only reducing city
The supplement of lower water also easily causes urban waterlogging, reduces urban life comfort level；Therefore, water-permeable brick is as a kind of good road surface
Pavement material receives significant attention；Water-permeable brick can be used for the laying on the non-driving road surface such as pavement, square and parking lot, have height
Water penetration can make part rainwater permeate the ground, and overcome the fluid-tight drawback of urban pavement；Its big surface friction coefficient, resistance to compression
Ability is strong, can meet the requirement of walk and automobile stop；In traditional handicraft, water-permeable brick mainly use waste ceramic, slag for
Raw material；If Chinese patent CN200610124386.2 using shraff be primary raw material, be added a certain amount of polished bricks abrasive dust,
Clay, flux raw material, organic additive and micro pore former produce high-performance pervious brick；Chinese patent
CN201610653114.5 prepares water-permeable brick using gangue building waste；In order to comprehensively utilize catalyst carrier waste material waste residue,
It is allowed to cycle input to recycle, the present invention proposes to manufacture high-performance pervious brick by raw material of the retired tai-gas clean-up catalyst of automobile.
Invention content
To solve the above problems, the present invention propose it is a kind of using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material
And preparation method thereof, the comprehensive utilization ratio of waste resource can be improved, meet circular economy and environmentally protective requirement, and prepare
Water-permeable brick intensity height, good water permeability, meet urban road laying quality requirement.
The present invention using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material, by following raw material by weight
Composition：
70 ~ 95 parts of catalyst carrier,
5 ~ 30 parts of bastard coal mountain flour,
1 ~ 6 part of sintering aid.
Further, further include sintering aid dissolving water, and its additive amount is sintering aid, catalyst carrier and gangue
The 5 ~ 10% of powder gross mass.
Further, described its granularity of bastard coal mountain flour is 150 ~ 300 mesh.
Further, the sintering aid is one or more of sodium metasilicate, sodium carbonate and sodium hydroxide.
The method for preparing high-performance pervious brick with the retired tai-gas clean-up catalyst of automobile of the present invention, includes the following steps：
Step 1, automobile retired tai-gas clean-up catalyst pretreatment, by the retired tai-gas clean-up catalyst of automobile with it is certain density
Acid solution or aqueous slkali mixing after be put into autoclave carry out pressurized acid leaching go out or alkali leach；Supersound process and mistake after reaction
Sieve separation respectively obtains leachate containing aluminium, catalyst active component and catalyst carrier；
Catalyst carrier obtained by step 1 is obtained the catalysis of different-grain diameter by step 2 after crusher in crushing, screening, classification
Agent carrier；
Sintering aid is dissolved in a certain amount of water and forms colourless transparent solution, is sprayed on catalyst support surface by step 3, mixes
Bastard coal mountain flour is sprinkled into after even again, continues to stir to uniformly mixed；
Mixture after stirring is put into mold by step 4, is press-formed under conditions of 10 ~ 100MPa, and pressurize 5 ~
Adobe is made in 20min；
Step 5, through after natural drying, temperature programming is fired to keeping the temperature 2 ~ 5 hours after 950-1200 DEG C, is obtained after cooling for adobe
Water-permeable brick.
Further, the catalyst carrier includes cordierite.
Further, in the step 2 catalyst carrier obtained after crusher in crushing, screening, classification 0.9mm ~
0.45mm, 0.45mm ~ 0.3mm, 0.3mm ~ 0.2mm, 0.2mm ~ 0.1mm and catalyst carrier less than 0.1mm different-grain diameters
Grain, and it is 30 ~ 55 parts that the catalyst carrier particle of 0.9mm ~ 0.45mm, which accounts for the parts by weight of total catalyst carrier granular, 0.45mm ~
The parts by weight that the catalyst carrier particle of 0.3mm accounts for total catalyst carrier granular are 5 ~ 30 parts, and the catalyst of 0.3mm ~ 0.2mm carries
The parts by weight that body particle accounts for total catalyst carrier granular are 10 ~ 25 parts, and the catalyst carrier particle of 0.2mm ~ 0.1mm accounts for total catalysis
The parts by weight of agent carrier particle are 10 ~ 20 parts, less than the parts by weight that 0.1mm catalyst carrier particles account for total catalyst carrier granular
It is 5 ~ 10 parts.
Further, temperature programming its concrete operation step in the step 5 is：It is heated up with the speed of 2 ~ 5 DEG C/min
To 300 ~ 500 DEG C, after 1 ~ 2h of constant temperature, then with the speed of 5 ~ 10 DEG C/min it is warming up to 900 ~ 1200 DEG C.
The present invention is compared with prior art, of the invention using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material
And preparation method thereof, 1 ~ 6wt component sintering additives are dissolved in a certain amount of water and form colourless transparent solution, are sprayed on 70 ~ 95wt
Part catalyst support surface is sprinkled into 5 ~ 30wt part bastard coal mountain flours after mixing again, continues stirring to uniformly mixed；Sintering aid dissolves
Amount of water be sintering aid, catalyst carrier and bastard coal mountain flour gross mass 5 ~ 10%；Extrusion forming, and burnt under certain temperature
Water-permeable brick is made；The comprehensive utilization ratio that waste resource can be improved meets circular economy and environmentally protective requirement, and prepare
Water-permeable brick intensity height, good water permeability, meet urban road laying quality requirement.
Description of the drawings
Fig. 1 is the flow process chart of the present invention.
Specific implementation mode
The present invention using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material, by following raw material by weight
Composition：
70 ~ 95 parts of catalyst carrier,
5 ~ 30 parts of bastard coal mountain flour,
1 ~ 6 part of sintering aid.
Further include sintering aid dissolving water, and its additive amount is sintering aid, catalyst carrier and bastard coal mountain flour gross mass
5 ~ 10%.
Described its granularity of bastard coal mountain flour is 150 ~ 300 mesh.
The sintering aid is one or more of sodium metasilicate, sodium carbonate and sodium hydroxide.
The method for preparing high-performance pervious brick with the retired tai-gas clean-up catalyst of automobile of the present invention, includes the following steps：
Step 1, automobile retired tai-gas clean-up catalyst pretreatment, by the retired tai-gas clean-up catalyst of automobile with it is certain density
Acid solution or aqueous slkali mixing after be put into autoclave carry out pressurized acid leaching go out or alkali leach；Supersound process and mistake after reaction
Sieve separation respectively obtains leachate containing aluminium, catalyst active component and catalyst carrier；
Catalyst carrier obtained by step 1 is obtained the catalysis of different-grain diameter by step 2 after crusher in crushing, screening, classification
Agent carrier；
Sintering aid is dissolved in a certain amount of water and forms colourless transparent solution, is sprayed on catalyst support surface by step 3, mixes
Bastard coal mountain flour is sprinkled into after even again, continues to stir to uniformly mixed；
Mixture after stirring is put into mold by step 4, is press-formed under conditions of 10 ~ 100MPa, and pressurize 5 ~
Adobe is made in 20min；
Step 5, through after natural drying, temperature programming is fired to keeping the temperature 2 ~ 5 hours after 950-1200 DEG C, is obtained after cooling for adobe
Water-permeable brick.
The catalyst carrier includes cordierite.
Catalyst carrier obtains 0.9mm ~ 0.45mm, 0.45mm after crusher in crushing, screening, classification in the step 2
~ 0.3mm, 0.3mm ~ 0.2mm, 0.2mm ~ 0.1mm and catalyst carrier particle less than 0.1mm different-grain diameters, and 0.9mm ~
The parts by weight that the catalyst carrier particle of 0.45mm accounts for total catalyst carrier granular are 30 ~ 55 parts, the catalysis of 0.45mm ~ 0.3mm
The parts by weight that agent carrier particle accounts for total catalyst carrier granular are 5 ~ 30 parts, and the catalyst carrier particle of 0.3mm ~ 0.2mm accounts for always
The parts by weight of catalyst carrier particle are 10 ~ 25 parts, and the catalyst carrier particle of 0.2mm ~ 0.1mm accounts for total catalyst carrier granular
Parts by weight be 10 ~ 20 parts, less than 0.1mm catalyst carrier particles account for total catalyst carrier granular parts by weight be 5 ~ 10 parts.
Temperature programming its concrete operation step in the step 5 is：It is warming up to 300 ~ 500 with the speed of 2 ~ 5 DEG C/min
DEG C, after 1 ~ 2h of constant temperature, then with the speed of 5 ~ 10 DEG C/min it is warming up to 900 ~ 1200 DEG C.
Embodiment 1：
A method of water-permeable brick being prepared for raw material using the retired tai-gas clean-up catalyst of automobile, is included the following steps：
Step 1 is put into autoclave after mixing the retired tai-gas clean-up catalyst of automobile with certain density acid solution, 160
It is handled 10 hours at DEG C；It is ultrasonically treated simultaneously sieving separating after reaction, respectively obtains leachate containing aluminium, catalyst active component
And catalyst carrier；
Step 2, will treated catalyst carrier through crusher in crushing, with multi-layer grading sieve screening 0.9mm ~ 0.45mm,
The particle of 0.45mm ~ 0.3mm, 0.3mm ~ 0.2mm, 0.2mm ~ 0.1mm and the different-grain diameter less than 0.1mm；
50g sintering aids are dissolved in 70g water and form clear solution by step 3, are sprayed on 850g catalyst support surfaces, mixing
It is sprinkled into 100g bastard coal mountain flours again afterwards, continues to stir to uniformly mixed；
Mixture is put into brick press die by step 4, is forced into 30Mpa and pressurize molding in 8 minutes, is dried 2 at room temperature
It, is made adobe；
Dried adobe is put into Muffle furnace through temperature programming to after 1000 DEG C by step 5, and heat preservation forms by a firing for 3 hours
To water-permeable brick.
Catalyst carrier includes 46.2 parts of 0.9mm ~ 0.45mm catalyst carriers in parts by mass in the step 2
Grain, 12.5 parts of 0.45mm ~ 0.3mm catalyst carrier particles, 15.4 parts of 0.3mm ~ 0.2mm catalyst carrier particles, 16.0
0.2mm ~ 0.1mm catalyst carrier particles of part, 9.9 parts are less than 0.1mm catalyst carrier particles.
Described its granularity of bastard coal mountain flour is less than 200 mesh.
The sintering aid is sodium metasilicate.
Temperature programming its concrete operation step in the step 5 is：400 DEG C are warming up to the speed of 2 DEG C/min, perseverance
After warm 1h, then cool down after keeping the temperature 3 hours after being warming up to 1000 DEG C with the speed of 5 DEG C/min, kiln discharge obtains water-permeable brick after cooling.
Embodiment 2：
A method of water-permeable brick being prepared for raw material using the retired tai-gas clean-up catalyst of automobile, is included the following steps：
Step 1 is put into after mixing the retired tai-gas clean-up catalyst of automobile with certain density acid solution in autoclave, 180 DEG C
Lower processing 6 hours；After reaction be ultrasonically treated and sieving separating, respectively obtain leachate containing aluminium, catalyst active component and
Catalyst carrier；
Step 2, will treated catalyst carrier through crusher in crushing, with multi-layer grading sieve screening 0.9mm ~ 0.45mm,
The particle of 0.45mm ~ 0.3mm, 0.3mm ~ 0.2mm, 0.2mm ~ 0.1mm and the different-grain diameter less than 0.1mm；
30g sintering aids are dissolved in 50g water and form clear solution by step 3, are sprayed on 720g catalyst support surfaces, mixing
It is sprinkled into 250g bastard coal mountain flours again afterwards, continues to stir to uniformly mixed；
Mixture is put into brick press die by step 4, is forced into 20Mpa and pressurize molding in 15 minutes, is dried 2 at room temperature
It, is made adobe.
Dried adobe is put into Muffle furnace through temperature programming to after 1100 DEG C by step 5, and heat preservation is fired into for 2 hours
Type obtains water-permeable brick.
Catalyst carrier includes 55.0 parts of 0.9mm ~ 0.45mm catalyst carriers in parts by mass in the step 2
Grain, 15.6 parts of 0.45mm ~ 0.3mm catalyst carrier particles, 13.5 parts of 0.3mm ~ 0.2mm catalyst carrier particles, 10.0
0.2mm ~ 0.1mm catalyst carrier particles of part, 5.9 parts are less than 0.1mm catalyst carrier particles.
Described its granularity of bastard coal mountain flour is less than 160 mesh.
The sintering aid is by sodium metasilicate and sodium hydroxide according to mass ratio 2:1 is mixed.
Temperature programming its concrete operation step in the step 5 is：500 DEG C are warming up to the speed of 4 DEG C/min, perseverance
After warm 1h, then cool down after keeping the temperature 2 hours after being warming up to 1100 DEG C with the speed of 8 DEG C/min, kiln discharge obtains water-permeable brick after cooling.
Embodiment 3：
A method of water-permeable brick being prepared for raw material using the retired tai-gas clean-up catalyst of automobile, is included the following steps：
Step 1 is put into after mixing the retired tai-gas clean-up catalyst of automobile with certain density aqueous slkali in autoclave, 180 DEG C
Lower processing 10 hours；After reaction be ultrasonically treated and sieving separating, respectively obtain leachate containing aluminium, catalyst active component and
Catalyst carrier；
Step 2, will treated catalyst carrier through crusher in crushing, with multi-layer grading sieve screening 0.9mm ~ 0.45mm,
The particle of 0.45mm ~ 0.3mm, 0.3mm ~ 0.2mm, 0.2mm ~ 0.1mm and the different-grain diameter less than 0.1mm；
20g sintering aids are dissolved in 50g water and form clear solution by step 3, are sprayed on 880g catalyst support surfaces, mixing
It is sprinkled into 100g bastard coal mountain flours again afterwards, continues to stir to uniformly mixed；
Mixture is put into brick press die by step 4, is forced into 45Mpa and pressurize molding in 5 minutes, is dried 2 at room temperature
It, is made adobe；
Dried adobe is put into Muffle furnace through temperature programming to after 1050 DEG C by step 5, and heat preservation forms by a firing for 4 hours
To water-permeable brick.
Catalyst carrier includes 35.0 parts of 0.9mm ~ 0.45mm catalyst carriers in parts by mass in the step 2
Grain, 25.7 parts of 0.45mm ~ 0.3mm catalyst carrier particles, 18.5 0.3mm ~ 0.2mm catalyst carrier particles, 12.8 parts
0.2mm ~ 0.1mm catalyst carrier particles, 8.0 parts be less than 0.1mm catalyst carrier particles.
Described its granularity of bastard coal mountain flour is less than 200 mesh.
The sintering aid is sodium carbonate.
Temperature programming its concrete operation step in the step 5 is：500 DEG C are warming up to the speed of 5 DEG C/min, perseverance
After warm 1h, then cool down after keeping the temperature 4 hours after being warming up to 1050 DEG C with the speed of 10 DEG C/min, kiln discharge obtains water-permeable brick after cooling.
Above-described embodiment is only the better embodiment of the present invention, therefore all structures according to described in present patent application range
It makes, the equivalent change or modification that feature and principle are done, is included within the scope of present patent application.
Claims (8)
1. a kind of using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material, which is characterized in that by it is following by weight
Raw material composition：
70 ~ 95 parts of catalyst carrier,
5 ~ 30 parts of bastard coal mountain flour,
1 ~ 6 part of sintering aid.
2. according to claim 1 using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material, it is characterised in that：Also
Including sintering aid dissolve water, and its additive amount be sintering aid, catalyst carrier and bastard coal mountain flour gross mass 5 ~ 10%.
3. according to claim 1 using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material, it is characterised in that：Institute
Its granularity of bastard coal mountain flour is stated as 150 ~ 300 mesh.
4. according to claim 1 using the retired tai-gas clean-up catalyst of automobile as the water-permeable brick of base-material, it is characterised in that：Institute
It is one or more of sodium metasilicate, sodium carbonate and sodium hydroxide to state sintering aid.
5. a kind of method preparing high-performance pervious brick with the retired tai-gas clean-up catalyst of automobile, which is characterized in that including following
Step：
Step 1, automobile retired tai-gas clean-up catalyst pretreatment, by the retired tai-gas clean-up catalyst of automobile with it is certain density
Acid solution or aqueous slkali mixing after be put into autoclave carry out pressurized acid leaching go out or alkali leach；Supersound process and mistake after reaction
Sieve separation respectively obtains leachate containing aluminium, catalyst active component and catalyst carrier；
Catalyst carrier obtained by step 1 is obtained the catalysis of different-grain diameter by step 2 after crusher in crushing, screening, classification
Agent carrier；
Sintering aid is dissolved in a certain amount of water and forms colourless transparent solution, is sprayed on catalyst support surface by step 3, mixes
Bastard coal mountain flour is sprinkled into after even again, continues to stir to uniformly mixed；
Mixture after stirring is put into mold by step 4, is press-formed under conditions of 10 ~ 100MPa, and pressurize 5 ~
Adobe is made in 20min；
Step 5, through after natural drying, temperature programming is fired to keeping the temperature 2 ~ 5 hours after 950-1200 DEG C, is obtained after cooling for adobe
Water-permeable brick.
6. the method according to claim 5 for preparing high-performance pervious brick with the retired tai-gas clean-up catalyst of automobile, special
Sign is：The catalyst carrier includes cordierite.
7. the method according to claim 5 for preparing high-performance pervious brick with the retired tai-gas clean-up catalyst of automobile, special
Sign is：In the step 2 catalyst carrier obtained after crusher in crushing, screening, classification 0.9mm ~ 0.45mm, 0.45mm ~
0.3mm, 0.3mm ~ 0.2mm, 0.2mm ~ 0.1mm and catalyst carrier particle less than 0.1mm different-grain diameters, and 0.9mm ~
The parts by weight that the catalyst carrier particle of 0.45mm accounts for total catalyst carrier granular are 30 ~ 55 parts, the catalysis of 0.45mm ~ 0.3mm
The parts by weight that agent carrier particle accounts for total catalyst carrier granular are 5 ~ 30 parts, and the catalyst carrier particle of 0.3mm ~ 0.2mm accounts for always
The parts by weight of catalyst carrier particle are 10 ~ 25 parts, and the catalyst carrier particle of 0.2mm ~ 0.1mm accounts for total catalyst carrier granular
Parts by weight be 10 ~ 20 parts, less than 0.1mm catalyst carrier particles account for total catalyst carrier granular parts by weight be 5 ~ 10 parts.
8. the method according to claim 5 for preparing high-performance pervious brick with the retired tai-gas clean-up catalyst of automobile, special
Sign is：Temperature programming its concrete operation step in the step 5 is：It is warming up to 300 ~ 500 with the speed of 2 ~ 5 DEG C/min
DEG C, after 1 ~ 2h of constant temperature, then with the speed of 5 ~ 10 DEG C/min it is warming up to 900 ~ 1200 DEG C.
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Cited By (1)
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| CN112675846A (en) * | 2020-12-22 | 2021-04-20 | 安徽稞馨环境科技有限公司 | Preparation method and application of noble metal monolithic catalyst for removing carbon monoxide at room temperature by catalytic oxidation method |
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