CN105199523A - Method for preparing special automobile exhaust purification photocatalysis coating for tunnels - Google Patents
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Abstract
The invention belongs to the technical field of catalysts and discloses a method for preparing special automobile exhaust purification photocatalysis coating for tunnels. The method includes: taking nano titanium oxide which is a photocatalytic material as a matrix material, taking ferric nitrate as a modifying agent, preparing iron ion doped nano titanium oxide particles by a sol-gel process, adding the prepared nano titanium oxide particles into a coating base material, well mixing, and adding a flatting agent and a thickening agent to obtain the special automobile exhaust purification photocatalysis coating for the tunnels. According to examples, the special automobile exhaust purification photocatalysis coating for the tunnels not only guarantees driving safety due to harmlessness to the environment and human bodies but also is remarkable in removal efficiency, and the removal rate of harmful emissions in automobile exhaust in the tunnels is higher than 85%.
Description
Technical field
The invention discloses the preparation method of special purification vehicle exhaust light catalyzed coating in a kind of tunnel, belong to coating preparation field.
Background technology
Along with improving constantly of standard of living, automobile, as the mark of life high level, enters vast family fast.Standard of living improves, automobile industry development, the consequent is exactly the quantity discharged increase of vehicle exhaust, this gaseous effluent great majority form containing a large amount of obnoxious flavoures by carbon monoxide, hydrocarbon polymer and oxynitride, one of primary pollution source of urban air pollution, not only smell is strange, and make us dizzy, feel sick, affect the healthy of people.
When vehicle is few, the self-purification capacity of air still can dissolve the toxin of automobile discharge.But along with the sharply increase of automobile quantity, traffic congestion gets married normal potluck, convenient, comfortable, the efficient advantage that automobile should possess gradually offset by too much vehicle, especially in tunnel, the impact of vehicle exhaust on tunnel environment is increasing, and therefore the improvement of tail gas is just more and more important.Public transport tunnel is due to environment opposing seal, there is a large amount of vehicle exhausts in the inside, particularly in the tunnel that the volume of traffic is large and longer, tail gas is easily caused to gather, not only pollute the facility in tunnel, and affect traffic safety, traditional tunnel ventilation air purification mode is not only to purifying vehicle exhaust limited efficiency, and ventilation installation running cost is higher all comparatively speaking.
The method of administering tail gas in addition in current technology mainly contains purification agent for treating waste gas method and transfer method, wherein transfer method refers to and tail gas is converted into another kind of or several pollution-free or material that contaminative is little, but the method clearance and turnover ratio lower, switching time is long, other purification agent for treating waste gas method refers to the absorption utilizing vehicle exhaust device itself to have, decomposition principle, through modern science and technology process, obnoxious flavour in air is eliminated in having of being formed, dispel the method for various odor function, but the corrodibility of the method to tail gas is larger, reduce the long-term effect of tail gas clean-up and reduce the work-ing life of exhaust gas cleaner.No matter the administering method of current vehicle exhaust has how many, no matter which kind of method, object only have one namely minimizing vehicle exhaust to the discharge of environment, environment protection.
Summary of the invention
Technical problem the present invention mainly solves: contain a large amount of carbon monoxide in motor vehicle exhaust thing in current tunnel, hydrocarbon polymer and oxynitride, not only for environment and harm very large, affect traffic safety, and traditional tunnel ventilation air purification mode tail gas clean-up limited efficiency, the problem that ventilation running cost is also higher, provide the preparation method of special purification vehicle exhaust light catalyzed coating in a kind of tunnel, the method is using photocatalyst material nano-titanium oxide as body material, using iron nitrate as properties-correcting agent, dissolving gel method is adopted to prepare the nano oxidized titanium particle of doping iron ion, afterwards obtained nano oxidized titanium particle is added in coating bed material, flow agent and thickening material is added after mixing, obtain special purification vehicle exhaust light catalyzed coating in a kind of tunnel.In the tunnel that the present invention obtains special purification vehicle exhaust light catalyzed coating not only for environment and human body without any harm, ensure traffic safety, and removal effect is remarkable, makes the clearance of noxious emission in vehicle exhaust in tunnel up to more than 85%.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) beaker of 500mL put into by the dehydrated alcohol measuring 50 ~ 60mL, get 20 ~ 30mL butyl (tetra) titanate again to join slowly in dehydrated alcohol, add 25 ~ 30mL diethanolamine afterwards as inhibitor, be placed on magnetic stirrer, 1 ~ 2h is stirred with the rotating speed of 200 ~ 300r/min, make it fully disperse, make reactant 1;
(2) get 1 ~ 2mL mass concentration be 80% iron nitrate solution join in 50 ~ 100mL deionized water, pour into together in dispersion tank, with the rotating speed of 100 ~ 200r/min dispersion 15 ~ 20min, after abundant dispersion, add 20 ~ 30mL dehydrated alcohol, shaking table vibration 10 ~ 15min, makes reactant 2;
(3) reactant 2 is dropwise dripped in reactant 1 slowly while stirring again, control to drip speed to make to drip off in its 10 ~ 20min, pH to 6 ~ 8 are regulated again with the hydrochloric acid soln that concentration is 2mol/L, be placed on magnetic stirrer and stir 2 ~ 3h, mixing speed is 300 ~ 400r/min, ageing 12 ~ 18h forms gel afterwards, gelatinous mixture is moved into retort furnace, 3 ~ 5h is calcined under the condition of 450 ~ 550 DEG C, after being cooled to room temperature, grind to form 90 ~ 100 object powder, the nano-titanium oxide of obtained doping iron ion;
(4) measuring 600 ~ 700mL deionized water pours in 1L beaker, add 100 ~ 200mL propylene glycol, be placed on magnetic stirrer, stir with the rotating speed of 200 ~ 300r/min, and add 1 ~ 2g dispersion agent, 0.5 ~ 1.5g defoamer and 0.2 ~ 1.2g wetting agent while stirring wherein, continuing stirring at low speed 10 ~ 15min makes various auxiliary agent mix, and obtains mixed solution;
(5) continue to add 10 ~ 20g calcium carbonate, 20 ~ 30g diatomite and 15 ~ 25g titanium dioxide in above-mentioned mixed solution, with homogenizer with the rotating speed high speed dispersion 20 ~ 30min of 2500 ~ 3000r/min, add the nano-titanium oxide of the above-mentioned obtained doping iron ion of 50 ~ 60g afterwards, improve rotating speed to 3000 ~ 3500r/min, continue stirring 30 ~ 40min, obtained slurry;
(6) slurry be stirred is transferred to paint mixing tank, be placed on magnetic stirrer, under the rotating speed of 500 ~ 600r/min, add 50 ~ 100mL organosilicon crylic acid latex and 0.2 ~ 1.2g thickening material and 2 ~ 5g flow agent continue discharging after stirring 20 ~ 25min, obtain special purification vehicle exhaust light catalyzed coating in a kind of tunnel.
Described dispersion agent is whiteruss.
Described wetting agent is Sodium dodecylbenzene sulfonate.
Described defoamer is polydimethylsiloxane.
Described thickening material is Vltra tears.
Described flow agent is polyvinyl alcohol.
Application method of the present invention is: during use, special purification vehicle exhaust light catalyzed coating Direct Uniform in tunnel made by the present invention is spread upon in tunnel wall to be clean, wherein the consumption of every square metre of tunnel inner wall wall is 1500 ~ 2000mL, coating thickness is between 1 ~ 2mm, under the condition of ventilating, dry 2 ~ 3h afterwards, make its natural air drying, solidify.
Beneficial effect of the present invention is:
(1) in the tunnel that obtains of the present invention, special purification vehicle exhaust light catalyzed coating removal effect is remarkable, makes the clearance of noxious emission in vehicle exhaust up to more than 85%;
(2) not only for environment and human body without any harm, ensured traffic safety, and the accelerate decomposition discharge of vehicle exhaust.
Embodiment
First the beaker of 500mL put into by the dehydrated alcohol measuring 50 ~ 60mL, get 20 ~ 30mL butyl (tetra) titanate again to join slowly in dehydrated alcohol, add 25 ~ 30mL diethanolamine afterwards as inhibitor, be placed on magnetic stirrer, 1 ~ 2h is stirred with the rotating speed of 200 ~ 300r/min, make it fully disperse, make reactant 1; Then get 1 ~ 2mL mass concentration be 80% iron nitrate solution join in 50 ~ 100mL deionized water, pour into together in dispersion tank, with the rotating speed of 100 ~ 200r/min dispersion 15 ~ 20min, after abundant dispersion, add 20 ~ 30mL dehydrated alcohol, shaking table vibration 10 ~ 15min, makes reactant 2; Reactant 2 is dropwise dripped in reactant 1 slowly while stirring more afterwards, control to drip speed to make to drip off in its 10 ~ 20min, pH to 6 ~ 8 are regulated again with the hydrochloric acid soln that concentration is 2mol/L, be placed on magnetic stirrer and stir 2 ~ 3h, mixing speed is 300 ~ 400r/min, ageing 12 ~ 18h forms gel afterwards, gelatinous mixture is moved into retort furnace, 3 ~ 5h is calcined under the condition of 450 ~ 550 DEG C, after being cooled to room temperature, grind to form 90 ~ 100 object powder, the nano-titanium oxide of obtained doping iron ion; Measuring 600 ~ 700mL deionized water subsequently pours in 1L beaker, add 100 ~ 200mL propylene glycol, be placed on magnetic stirrer, stir with the rotating speed of 200 ~ 300r/min, and add 1 ~ 2g dispersion agent, 0.5 ~ 1.5g defoamer and 0.2 ~ 1.2g wetting agent while stirring wherein, continuing stirring at low speed 10 ~ 15min makes various auxiliary agent mix, and obtains mixed solution; Continue to add 10 ~ 20g calcium carbonate, 20 ~ 30g diatomite and 15 ~ 25g titanium dioxide in above-mentioned mixed solution, with homogenizer with the rotating speed high speed dispersion 20 ~ 30min of 2500 ~ 3000r/min, add the nano-titanium oxide of the above-mentioned obtained doping iron ion of 50 ~ 60g afterwards, improve rotating speed to 3000 ~ 3500r/min, continue stirring 30 ~ 40min, obtained slurry; Finally the slurry be stirred is transferred to paint mixing tank, be placed on magnetic stirrer, under the rotating speed of 500 ~ 600r/min, add 50 ~ 100mL organosilicon crylic acid latex and 0.2 ~ 1.2g thickening material and 2 ~ 5g flow agent continue discharging after stirring 20 ~ 25min, obtain special purification vehicle exhaust light catalyzed coating in a kind of tunnel.
Described dispersion agent is whiteruss.
Described wetting agent is Sodium dodecylbenzene sulfonate.
Described defoamer is polydimethylsiloxane.
Described thickening material is Vltra tears.
Described flow agent is polyvinyl alcohol.
Example 1
First the beaker of 500mL put into by the dehydrated alcohol measuring 50mL, then gets 20mL butyl (tetra) titanate and join slowly in dehydrated alcohol, adds 25mL diethanolamine afterwards as inhibitor, be placed on magnetic stirrer, stir 1h with the rotating speed of 200r/min, make it fully disperse, make reactant 1; Then get 1mL mass concentration be 80% iron nitrate solution join in 50mL deionized water, pour into together in dispersion tank, with the rotating speed of 100r/min dispersion 15min, fully after dispersion, add 20mL dehydrated alcohol, shaking table vibration 10min, makes reactant 2; Reactant 2 is dropwise dripped in reactant 1 slowly while stirring more afterwards, control to drip speed to make to drip off in its 10min, regulate pH to 6 with the hydrochloric acid soln that concentration is 2mol/L again, be placed on magnetic stirrer and stir 2h, mixing speed is 300r/min, ageing 12h forms gel afterwards, gelatinous mixture is moved into retort furnace, under the condition of 450 DEG C, calcines 3h, after being cooled to room temperature, grind to form 90 object powder, the nano-titanium oxide of obtained doping iron ion; Measuring 600mL deionized water subsequently pours in 1L beaker, add 100mL propylene glycol, be placed on magnetic stirrer, stir with the rotating speed of 200r/min, and add 1g dispersion agent, 0.5g defoamer and 0.2g wetting agent while stirring wherein, continuing stirring at low speed 10min makes various auxiliary agent mix, and obtains mixed solution; Continue to add 10g calcium carbonate, 20g diatomite and 15g titanium dioxide in above-mentioned mixed solution, with homogenizer with the rotating speed high speed dispersion 20min of 2500r/min, add the nano-titanium oxide of the above-mentioned obtained doping iron ion of 50g afterwards, improve rotating speed to 3000r/min, continue to stir 30min, obtained slurry; Finally the slurry be stirred is transferred to paint mixing tank, be placed on magnetic stirrer, under the rotating speed of 500r/min, add 50mL organosilicon crylic acid latex and 0.2g thickening material and 2g flow agent continue to stir discharging after 20min, obtain special purification vehicle exhaust light catalyzed coating in a kind of tunnel.
This example is when operating, special purification vehicle exhaust light catalyzed coating Direct Uniform in tunnel made by the present invention is spread upon in tunnel wall to be clean, wherein the consumption of every square metre of tunnel inner wall wall is 1500mL, and dry in the air 2h afterwards under the condition of ventilating, and makes its natural air drying, solidifies.Not only for environment and human body without any harm, ensured traffic safety, and removal effect is remarkable, makes the clearance of noxious emission in vehicle exhaust in tunnel up to 85%.
Example 2
First the beaker of 500mL put into by the dehydrated alcohol measuring 55mL, get 25mL butyl (tetra) titanate again to join slowly in dehydrated alcohol, add 28mL diethanolamine afterwards as inhibitor, be placed on magnetic stirrer, 1.5h is stirred with the rotating speed of 250r/min, make it fully disperse, make reactant 1; Then get 1.5mL mass concentration be 80% iron nitrate solution join in 70mL deionized water, pour into together in dispersion tank, with the rotating speed of 150r/min dispersion 17min, fully after dispersion, add 25mL dehydrated alcohol, shaking table vibration 13min, makes reactant 2; Reactant 2 is dropwise dripped in reactant 1 slowly while stirring more afterwards, control to drip speed to make to drip off in its 10min, regulate pH to 6 with the hydrochloric acid soln that concentration is 2mol/L again, be placed on magnetic stirrer and stir 2h, mixing speed is 300r/min, ageing 12h forms gel afterwards, gelatinous mixture is moved into retort furnace, under the condition of 450 DEG C, calcines 3h, after being cooled to room temperature, grind to form 90 object powder, the nano-titanium oxide of obtained doping iron ion; Measuring 600mL deionized water subsequently pours in 1L beaker, add 100mL propylene glycol, be placed on magnetic stirrer, stir with the rotating speed of 200r/min, and add 1g dispersion agent, 0.5g defoamer and 0.2g wetting agent while stirring wherein, continuing stirring at low speed 10min makes various auxiliary agent mix, and obtains mixed solution; Continue to add 10g calcium carbonate, 20g diatomite and 15g titanium dioxide in above-mentioned mixed solution, with homogenizer with the rotating speed high speed dispersion 20min of 2500r/min, add the nano-titanium oxide of the above-mentioned obtained doping iron ion of 50g afterwards, improve rotating speed to 3000r/min, continue to stir 30min, obtained slurry; Finally the slurry be stirred is transferred to paint mixing tank, be placed on magnetic stirrer, under the rotating speed of 500r/min, add 50mL organosilicon crylic acid latex and 0.2g thickening material and 2g flow agent continue to stir discharging after 20min, obtain special purification vehicle exhaust light catalyzed coating in a kind of tunnel.
This example is when operating, special purification vehicle exhaust light catalyzed coating Direct Uniform in tunnel made by the present invention is spread upon in tunnel wall to be clean, wherein the consumption of every square metre of tunnel inner wall wall is 1800mL, dry in the air 2.5h afterwards under the condition of ventilating, and makes its natural air drying, solidifies.Not only for environment and human body without any harm, ensured traffic safety, and removal effect is remarkable, makes the clearance of noxious emission in vehicle exhaust in tunnel up to 88%.
Example 3
First the beaker of 500mL put into by the dehydrated alcohol measuring 60mL, then gets 30mL butyl (tetra) titanate and join slowly in dehydrated alcohol, adds 30mL diethanolamine afterwards as inhibitor, be placed on magnetic stirrer, stir 2h with the rotating speed of 300r/min, make it fully disperse, make reactant 1; Then get 2mL mass concentration be 80% iron nitrate solution join in 100mL deionized water, pour into together in dispersion tank, with the rotating speed of 200r/min dispersion 20min, fully after dispersion, add 30mL dehydrated alcohol, shaking table vibration 15min, makes reactant 2; Reactant 2 is dropwise dripped in reactant 1 slowly while stirring more afterwards, control to drip speed to make to drip off in its 20min, regulate pH to 8 with the hydrochloric acid soln that concentration is 2mol/L again, be placed on magnetic stirrer and stir 3h, mixing speed is 400r/min, ageing 18h forms gel afterwards, gelatinous mixture is moved into retort furnace, under the condition of 550 DEG C, calcines 5h, after being cooled to room temperature, grind to form 100 object powder, the nano-titanium oxide of obtained doping iron ion; Measuring 700mL deionized water subsequently pours in 1L beaker, add 200mL propylene glycol, be placed on magnetic stirrer, stir with the rotating speed of 300r/min, and add 2g dispersion agent, 1.5g defoamer and 1.2g wetting agent while stirring wherein, continuing stirring at low speed 15min makes various auxiliary agent mix, and obtains mixed solution; Continue to add 20g calcium carbonate, 30g diatomite and 25g titanium dioxide in above-mentioned mixed solution, with homogenizer with the rotating speed high speed dispersion 30min of 3000r/min, add the nano-titanium oxide of the above-mentioned obtained doping iron ion of 60g afterwards, improve rotating speed to 3500r/min, continue to stir 40min, obtained slurry; Finally the slurry be stirred is transferred to paint mixing tank, be placed on magnetic stirrer, under the rotating speed of 600r/min, add 100mL organosilicon crylic acid latex and 1.2g thickening material and 5g flow agent continue to stir discharging after 25min, obtain special purification vehicle exhaust light catalyzed coating in a kind of tunnel.
This example is when operating, special purification vehicle exhaust light catalyzed coating Direct Uniform in tunnel made by the present invention is spread upon in tunnel wall to be clean, wherein the consumption of every square metre of tunnel inner wall wall is 2000mL, and dry in the air 3h afterwards under the condition of ventilating, and makes its natural air drying, solidifies.Not only for environment and human body without any harm, ensured traffic safety, and removal effect is remarkable, makes the clearance of noxious emission in vehicle exhaust in tunnel up to 90%.
Claims (6)
1. the preparation method of special purification vehicle exhaust light catalyzed coating in tunnel, is characterized in that concrete preparation process is:
(1) beaker of 500mL put into by the dehydrated alcohol measuring 50 ~ 60mL, get 20 ~ 30mL butyl (tetra) titanate again to join slowly in dehydrated alcohol, add 25 ~ 30mL diethanolamine afterwards as inhibitor, be placed on magnetic stirrer, 1 ~ 2h is stirred with the rotating speed of 200 ~ 300r/min, make it fully disperse, make reactant 1;
(2) get 1 ~ 2mL mass concentration be 80% iron nitrate solution join in 50 ~ 100mL deionized water, pour into together in dispersion tank, with the rotating speed of 100 ~ 200r/min dispersion 15 ~ 20min, after abundant dispersion, add 20 ~ 30mL dehydrated alcohol, shaking table vibration 10 ~ 15min, makes reactant 2;
(3) reactant 2 is dropwise dripped in reactant 1 slowly while stirring again, control to drip speed to make to drip off in its 10 ~ 20min, pH to 6 ~ 8 are regulated again with the hydrochloric acid soln that concentration is 2mol/L, be placed on magnetic stirrer and stir 2 ~ 3h, mixing speed is 300 ~ 400r/min, ageing 12 ~ 18h forms gel afterwards, gelatinous mixture is moved into retort furnace, 3 ~ 5h is calcined under the condition of 450 ~ 550 DEG C, after being cooled to room temperature, grind to form 90 ~ 100 object powder, the nano-titanium oxide of obtained doping iron ion;
(4) measuring 600 ~ 700mL deionized water pours in 1L beaker, add 100 ~ 200mL propylene glycol, be placed on magnetic stirrer, stir with the rotating speed of 200 ~ 300r/min, and add 1 ~ 2g dispersion agent, 0.5 ~ 1.5g defoamer and 0.2 ~ 1.2g wetting agent while stirring wherein, continuing stirring at low speed 10 ~ 15min makes various auxiliary agent mix, and obtains mixed solution;
(5) continue to add 10 ~ 20g calcium carbonate, 20 ~ 30g diatomite and 15 ~ 25g titanium dioxide in above-mentioned mixed solution, with homogenizer with the rotating speed high speed dispersion 20 ~ 30min of 2500 ~ 3000r/min, add the nano-titanium oxide of the above-mentioned obtained doping iron ion of 50 ~ 60g afterwards, improve rotating speed to 3000 ~ 3500r/min, continue stirring 30 ~ 40min, obtained slurry;
(6) slurry be stirred is transferred to paint mixing tank, be placed on magnetic stirrer, under the rotating speed of 500 ~ 600r/min, add 50 ~ 100mL organosilicon crylic acid latex and 0.2 ~ 1.2g thickening material and 2 ~ 5g flow agent continue discharging after stirring 20 ~ 25min, obtain special purification vehicle exhaust light catalyzed coating in a kind of tunnel.
2. the preparation method of special purification vehicle exhaust light catalyzed coating in a kind of tunnel according to claim 1, is characterized in that: described dispersion agent is whiteruss.
3. the preparation method of special purification vehicle exhaust light catalyzed coating in a kind of tunnel according to claim 1, is characterized in that: described wetting agent is Sodium dodecylbenzene sulfonate.
4. the preparation method of special purification vehicle exhaust light catalyzed coating in a kind of tunnel according to claim 1, is characterized in that: described defoamer is polydimethylsiloxane.
5. the preparation method of special purification vehicle exhaust light catalyzed coating in a kind of tunnel according to claim 1, is characterized in that: described thickening material is Vltra tears.
6. the preparation method of special purification vehicle exhaust light catalyzed coating in a kind of tunnel according to claim 1, is characterized in that: described flow agent is polyvinyl alcohol.
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| CN201510630656.6A CN105199523A (en) | 2015-09-29 | 2015-09-29 | Method for preparing special automobile exhaust purification photocatalysis coating for tunnels |
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| CN105754441A (en) * | 2016-03-25 | 2016-07-13 | 无锡南理工科技发展有限公司 | Preparation method of water-based paint with sterilization function |
| CN105802412A (en) * | 2016-03-25 | 2016-07-27 | 无锡南理工科技发展有限公司 | Water-based coating doped with nanometer titanium dioxide and having sterilization function |
| CN108276785A (en) * | 2017-12-27 | 2018-07-13 | 孝感市元达新材料科技有限公司 | A kind of road scavenging material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105754441A (en) * | 2016-03-25 | 2016-07-13 | 无锡南理工科技发展有限公司 | Preparation method of water-based paint with sterilization function |
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