CN102580787A - Drying technology of nanoscale coating material for automobile tail gas catalyst - Google Patents
Drying technology of nanoscale coating material for automobile tail gas catalyst Download PDFInfo
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- CN102580787A CN102580787A CN2012100471212A CN201210047121A CN102580787A CN 102580787 A CN102580787 A CN 102580787A CN 2012100471212 A CN2012100471212 A CN 2012100471212A CN 201210047121 A CN201210047121 A CN 201210047121A CN 102580787 A CN102580787 A CN 102580787A
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- coating material
- nanoscale coating
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- drying
- exhaust catalyst
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Abstract
The invention discloses a drying technology of a nanoscale coating material for the automobile tail gas catalyst. The nanoscale coating material for the automobile tail gas catalyst comprises composite aluminum oxide and a ceria-zirconia oxygen storage material, the particle diameter of the nanoscale coating material is 100-800nm; and during drying, and the water-containing nanoscale coating material is placed in a microwave environment to dry and ensure that the water content is less than 20% of the total weight. By adopting the technical scheme of the invention, as the microwave directly acts on water molecules, the vibrations of the water molecules are caused, the vibrations are converted to heat energy and the aims of heating and drying are achieved. By adopting the drying technology of the nanoscale coating material for the automobile tail gas catalyst, the microwave heating is fast, the production efficiency is high, the working environment is good, energy is saved and the consumption is reduced; and the powder which is prepared by drying the slurry has larger specific surface area.
Description
Technical field
The present invention relates to a kind of auto-exhaust catalyst and use the coating material drying technology, relate in particular to a kind of nanoscale coating material drying technology.
Background technology
It is the modified oxidized aluminum of heat-resisting, high temperature resistant, high-specific surface area large aperture, sulfur poisoning-resistant that auto-exhaust catalyst uses nano-coating material.Mainly form by composite alumina and cerium zirconium hydrogen-storing material.Wherein the main component of composite alumina is an aluminium oxide.
Aluminium oxide is claimed alundum (Al again, is commonly referred to " alumina ", is the amorphous powder of a kind of white, is commonly called as alumina.
For the oven dry of coating material, the technology conventional methods that adopt are dried more at present, for example: and steam drying, electrothermal drying, heated-air drying etc., adopt said method to have following defective:
Drying time is long: taken off to below 20% by 52%～75% water content; Adopt the said method method to need 22 hours usually; The long production cycle also brings the risk aggravation of burst factor in the production process, for example has a power failure in the production process etc., influences the quality of entire block easily.
The product catalytic performance is general.
Production environment is abominable, and equipment takes up an area of big, and the heating heat dissipation capacity is big, and dust is many, and noise is big, and labor strength is big, and the product waste heat amount after the oven dry is big, and the workman operates inconvenience, more exists to scald risk.
Productivity ratio is low, and conventional method is taked the batch (-type) batch production, and production efficiency is low.
Summary of the invention
The auto-exhaust catalyst that the object of the invention is a kind of efficient stable and production excellent product performance are provided is with nanoscale coating material stoving process.
For realizing the foregoing invention purpose; The technical scheme that the present invention takes is following: a kind of auto-exhaust catalyst is with nanoscale coating material stoving process; Said auto-exhaust catalyst contains water, composite alumina and cerium zirconium hydrogen-storing material with the nanoscale coating material; It is 100～800nm that said auto-exhaust catalyst uses the particle diameter of nanoscale coating material, during oven dry with said auto-exhaust catalyst with the nanoscale coating material place dry under the microwave environment to water content less than 20% of gross mass.
Wherein, water content was 52%～75% of gross mass before said auto-exhaust catalyst used the oven dry of nanoscale coating material.
Wherein, said microwave frequency is 2400～2500MHz.
Adopt technical scheme of the present invention,, cause the hydrone vibration, be converted into heat energy, and then reach the purpose of heating, drying because microwave directly acts on hydrone.Use heating using microwave according to the invention not only to heat soon, production efficiency is high, and good work environment is energy-saving and cost-reducing, and the pulvis specific area of processing after the slurry oven dry improves.
The auto-exhaust catalyst that the present invention produces has the premium properties of heat-resisting, high temperature resistant, high-specific surface area large aperture, sulfur poisoning-resistant with the nanoscale coating material.
The specific embodiment
Further specify technical scheme of the present invention and technique effect according to heating using microwave and conventional heat oven dry contrast test below:
Prepare said auto-exhaust catalyst and use the nanoscale coating material, during oven dry with moisture auto-exhaust catalyst with the nanoscale coating material place dry under the microwave environment to water content less than 20% of gross mass.The slurry of coating material contains water, composite alumina and cerium zirconium hydrogen-storing material in the slurry, it is 100～800nm that said auto-exhaust catalyst uses the particle diameter of nanoscale coating material, wherein in the slurry solid grain size between 100～800nm.
Sample A to E gets the material that 25kg meets above-mentioned condition for every part, dries comparison, structure such as following table with microwave drying technology and traditional hot stoving process respectively:
We can draw from above data contrast, the coating material behind the microwave drying, and the drying technology that performance is more traditional has tangible raising, and the time is short, and energy consumption is low, has promotional value.
Especially the material behind the microwave drying, its specific area heat oven dry improve a lot, and specific area is an important parameters in the coating material performance; The coating material that specific area is high; Under identical weight, contact more fully with reactant, catalysis speed is faster.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (3)
1. an auto-exhaust catalyst is with nanoscale coating material stoving process; It is characterized in that; Said auto-exhaust catalyst contains water, composite alumina and cerium zirconium hydrogen-storing material with the nanoscale coating material; It is 100～800nm that said auto-exhaust catalyst uses the particle diameter of nanoscale coating material, during oven dry with said auto-exhaust catalyst with the nanoscale coating material place dry under the microwave environment to water content less than 20% of gross mass.
2. auto-exhaust catalyst according to claim 1 is characterized in that with nanoscale coating material stoving process water content was 52%～75% of gross mass before said auto-exhaust catalyst used the oven dry of nanoscale coating material.
3. auto-exhaust catalyst according to claim 1 is characterized in that with nanoscale coating material stoving process said microwave frequency is 2400～2500MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100471212A CN102580787A (en) | 2012-02-27 | 2012-02-27 | Drying technology of nanoscale coating material for automobile tail gas catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100471212A CN102580787A (en) | 2012-02-27 | 2012-02-27 | Drying technology of nanoscale coating material for automobile tail gas catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102580787A true CN102580787A (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100471212A Pending CN102580787A (en) | 2012-02-27 | 2012-02-27 | Drying technology of nanoscale coating material for automobile tail gas catalyst |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249459A (en) * | 2008-03-14 | 2008-08-27 | 福州大学化肥催化剂国家工程研究中心 | Automobile tail gas purifier high performance nano assembly catalyze coating material and method of preparing the same |
| CN101293203A (en) * | 2007-04-27 | 2008-10-29 | 马自达汽车株式会社 | Exhaust gas purification catalyst and manufacturing method thereof |
| CN101450311A (en) * | 2007-11-29 | 2009-06-10 | 南化集团研究院 | Microwave treatment method capable of increasing copper base catalyst performance |
-
2012
- 2012-02-27 CN CN2012100471212A patent/CN102580787A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293203A (en) * | 2007-04-27 | 2008-10-29 | 马自达汽车株式会社 | Exhaust gas purification catalyst and manufacturing method thereof |
| CN101450311A (en) * | 2007-11-29 | 2009-06-10 | 南化集团研究院 | Microwave treatment method capable of increasing copper base catalyst performance |
| CN101249459A (en) * | 2008-03-14 | 2008-08-27 | 福州大学化肥催化剂国家工程研究中心 | Automobile tail gas purifier high performance nano assembly catalyze coating material and method of preparing the same |
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Application publication date: 20120718 |