CN105170194A - Catalyst carrier protective jacket and application thereof - Google Patents
Catalyst carrier protective jacket and application thereof Download PDFInfo
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- CN105170194A CN105170194A CN201510594903.1A CN201510594903A CN105170194A CN 105170194 A CN105170194 A CN 105170194A CN 201510594903 A CN201510594903 A CN 201510594903A CN 105170194 A CN105170194 A CN 105170194A
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- Prior art keywords
- catalyst carrier
- protective sleeve
- carrier protective
- roasting
- described catalyst
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Abstract
The invention provides a catalyst carrier protective jacket and application thereof in catalyst roasting. The catalyst carrier protective jacket is produced by adopting an inorganic material with high temperature resistance, thermal insulation property and high strength, and in use, the protective jacket sleeves the side wall of a catalyst carrier for roasting, so that a good heat transfer effect can be achieved, and the husk of the catalyst carrier cannot fracture or the fracture rate is low after roasting.
Description
Technical field
The invention belongs to chemical field, particularly relate to a kind of catalyst carrier protective sleeve and application thereof.
Background technology
Because exhaust gas from diesel vehicle is to the adverse effect of environment and the mankind, China's environmental legislation has formulated stricter state four, state five standard.Therefore, diesel engine manufacturers and emission Heat & Control Pty Ltd. are just making great efforts to obtain sooner, the Diesel engine of more environmental protection, and this Diesel engine meets consumer by minimum expense, meets requirement the strictest under all operations condition.
Due to unpredictable drying and burn till contraction, what the close dimensional that can not produce setting at present required has large diameter diesel particulate filter and base material.Therefore, condensation ceramic mud has been used to the exocuticle forming cordierite monolith.Condensation ceramic mud is carried out mixing and puts on and fire, on wavy base material, then wet epidermis can be carried out drying by convection current or microwave drying under external environment condition or at elevated temperatures.Then dry part prepares to receive catalyst coat and the downstream needed for any other.Current epidermis design show goes out the conflict of the physical property requirements between final application and middle processing and operation.
In use, catalyst-coated produces the electric kiln calcined catalyst that family generally adopts roller bed type, and in order to enhance productivity, catalyst produces the calcining manners that family adopts the fast cooling that is rapidly heated.This calcining manners makes the rate-of-loss of coolant of the crust of carrier and inside inconsistent, causes the internal-external temperature difference of carrier large.Skin material must have low-thermal-expansion and high-heat resistance shock resistant (low elastic modulus) to bear severe thermal gradient.Even if the cordierite of grinding or the material (as electroquartz, aluminium titanates) of other low thermal coefficient of expansion can manufacture the epidermis with less thermal coefficient of expansion (CTE), the CTE also low not the most extreme calcination condition to meeting Fast Heating and cool cycles of gained, causes the cracking of carrier.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of catalyst carrier protective sleeve and application thereof, for solving the problems existed in prior art.
For achieving the above object and other relevant objects, the invention provides a kind of catalyst carrier protective sleeve, make primarily of inorganic material, its size is slightly larger than described catalyst carrier.
Preferably, the material of described catalyst carrier protective sleeve comprises ceramic fibre, clayey is ceramic, High-Alumina is ceramic.
Preferred further, described ceramic fibre is high alumina ceramic fiber.
Preferably, the thickness of described catalyst carrier protective sleeve is not less than 3.2mm.
Preferred further, the thickness of described catalyst carrier protective sleeve is not less than 6.4mm.
For achieving the above object and other relevant objects, the invention provides the application of described catalyst carrier protective sleeve in catalyst roasting.
For achieving the above object and other relevant objects, the invention provides a kind of catalyst roasting technique, adopt described catalyst carrier protective sleeve, comprising:
(1) by catalyst-coated in catalyst carrier;
(2) described catalyst carrier protective sleeve is sheathed on the sidewall of described catalyst carrier;
(3) the described catalyst carrier after sheathed described catalyst carrier protective sleeve is carried out roasting.
Preferably, before roasting, according to the moisture content of described catalyst carrier, humidification or not humidification are carried out to described catalyst carrier protective sleeve.
Preferably, during roasting, the temperature difference of described catalyst carrier crust and central part is no more than 100 DEG C.
Preferred further, during roasting, the temperature difference of described catalyst carrier crust and central part is no more than 40 DEG C.
As mentioned above, catalyst carrier protective sleeve of the present invention and application thereof, have following beneficial effect:
Catalyst carrier protective sleeve of the present invention adopts the inorganic material with high temperature resistant, insulation and high-intensity performance to make; during use; the sidewall being sheathed on described catalyst carrier carries out roasting; existing good heat-transfer effect, can ensure again calcined catalyst carrier crust do not ftracture or cracking rate very little.
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this description can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by detailed description of the invention different in addition, and the every details in this description also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
Notice, in the following example, the concrete process equipment that indicates or device all adopt conventional equipment in this area or device; All force value and scope all refer to absolute pressure.
In addition should be understood that the one or more method steps mentioned in the present invention do not repel and can also to there is additive method step or can also insert additive method step before and after described combination step between these steps clearly mentioned, except as otherwise noted; Will also be understood that, the relation that is connected between the one or more equipment/devices mentioned in the present invention is not repelled and can also to be there are other equipment/devices or can also insert other equipment/devices before and after described unit equipment/device between these two equipment/devices clearly mentioned, except as otherwise noted.And, except as otherwise noted, the numbering of various method steps is only the convenient tool differentiating various method steps, but not be ordering or the enforceable scope of restriction the present invention of restriction various method steps, the change of its relativeness or adjustment, when changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Embodiment 1
Catalyst carrier is generally cylindric, and catalyst carrier protective sleeve is also cylindric, during use, is sheathed on the sidewall of catalyst carrier, the not sheathed protective sleeve in two ends.Catalyst carrier protective sleeve adopts inorganic material to make, and inorganic material comprises ceramic fibre, clayey is ceramic, High-Alumina is ceramic, is preferably high alumina ceramic fiber.The thickness of catalyst carrier protective sleeve is not less than 3.2mm.Integrated protection effect and cost, the thickness of catalyst carrier protective sleeve is 6.4mm.
Catalyst carrier protective sleeve can adopt high-temperature ceramic fibre measuring fiber cloth to be sewn into cannula-like; above-mentioned material can be adopted to make insulation blanket; high temperature resistant fixture is adopted to accommodate during use; also strip material can be adopted closely to be wound around on a catalyst support in a spiral form; forming protective sleeve, can also be the sleeve that inorganic ceramic material is made.
Embodiment 2
First, by catalyst-coated on a catalyst support, then adopt any one catalyst carrier protective sleeve above-mentioned, be set on catalyst carrier sidewall.According to the moisture content of coated catalysts rear catalyst carrier; can to catalyst carrier protective sleeve water inlet water spray humidification or not humidification; then enter calcining furnace with the catalyst carrier of catalyst carrier protective sleeve to calcine together, calcining heat is generally 450-550 DEG C, and burnout cycle is 30min-2h.Adopt said catalyst carrier protective sleeve, after calcining, catalyst carrier crust cracking rate is not higher than 5%.
Test example 1
(1) by 100 pieces of carrier coated catalysts (unprotect cover), enter the electrical heating type roller kilns of Fast Heating and cool cycles, calcining heat is 500 degree, and burnout cycle is 45 minutes;
(2) use multichannel thermocouple, the crust of test carrier and the centre temperature difference, be up to 300 DEG C.Crust cracking rate reaches 30%.
Test example 2
(1) according to catalyst carrier external diameter, high-temperature ceramic fibre cloth (fiber cloth embeds metal alloy compositions, thickness 3.2mm) is sewn into protective sleeve;
After (2) 100 pieces of carrier coated catalysts, the protective sleeve that step (1) is made, enters the electrical heating type roller kilns of Fast Heating and cool cycles, and calcining heat is 500 degree, and burnout cycle is 45 minutes;
(3) use multichannel thermocouple, the crust of test carrier and the centre temperature difference, be up to 100 DEG C.Crust cracking rate is 1%.
Test example 3
After (1) 100 piece of carrier coated catalysts, put insulation blanket (being formed by high alumina ceramic fibrage, thickness 6.8mm), and use high temperature stainless steel fixture to accommodate.Enter the electrical heating type roller kilns of Fast Heating and cool cycles, calcining heat is 500 degree, and burnout cycle is 45 minutes.
(2) use multichannel thermocouple, the crust of test carrier and the centre temperature difference, be up to 40 DEG C.Crust cracking rate is 0%.
As mentioned above; catalyst carrier protective sleeve of the present invention adopts the inorganic material with high temperature resistant, insulation and high-intensity performance to make; during use; the sidewall being sheathed on described catalyst carrier carries out roasting; existing good heat-transfer effect, can ensure again calcined catalyst carrier crust do not ftracture or cracking rate very little.
Above embodiment is in order to embodiment disclosed by the invention is described, can not be interpreted as limitation of the present invention.In addition, various amendment listed herein and invention in method, composition change, be apparent concerning those skilled in the art without departing from the scope and spirit in the present invention.Although in conjunction with multiple concrete preferred embodiment of the present invention to invention has been concrete description, should be appreciated that the present invention should not be only limitted to these specific embodiments.In fact, variously as above invention is obtained concerning apparent amendment those skilled in the art and all should comprise within the scope of the invention.
Claims (10)
1. a catalyst carrier protective sleeve, is characterized in that, makes primarily of inorganic material, and its size is slightly larger than described catalyst carrier.
2. catalyst carrier protective sleeve as claimed in claim 1, is characterized in that, the material of described catalyst carrier protective sleeve comprises ceramic fibre, clayey pottery, High-Alumina are ceramic.
3. catalyst carrier protective sleeve as claimed in claim 2, it is characterized in that, described ceramic fibre is high alumina ceramic fiber.
4. catalyst carrier protective sleeve as claimed in claim 1, it is characterized in that, the thickness of described catalyst carrier protective sleeve is not less than 3.2mm.
5. catalyst carrier protective sleeve as claimed in claim 4, it is characterized in that, the thickness of described catalyst carrier protective sleeve is not less than 6.4mm.
6. the application of catalyst carrier protective sleeve in catalyst roasting as described in any one of claim 1-5.
7. a catalyst roasting technique, adopts catalyst carrier protective sleeve described in any one of claim 1-5, comprising:
(1) by catalyst-coated in catalyst carrier;
(2) described catalyst carrier protective sleeve is sheathed on the sidewall of described catalyst carrier;
(3) the described catalyst carrier after sheathed described catalyst carrier protective sleeve is carried out roasting.
8. technique as claimed in claim 7, is characterized in that, before roasting, according to the moisture content of described catalyst carrier, carries out humidification or not humidification to described catalyst carrier protective sleeve.
9. technique as described in claim 7 or 8, is characterized in that, during roasting, the temperature difference of described catalyst carrier crust and central part is no more than 100 DEG C.
10. technique as claimed in claim 9, it is characterized in that, during roasting, the temperature difference of described catalyst carrier crust and central part is no more than 40 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594903.1A CN105170194A (en) | 2015-09-17 | 2015-09-17 | Catalyst carrier protective jacket and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594903.1A CN105170194A (en) | 2015-09-17 | 2015-09-17 | Catalyst carrier protective jacket and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105170194A true CN105170194A (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510594903.1A Pending CN105170194A (en) | 2015-09-17 | 2015-09-17 | Catalyst carrier protective jacket and application thereof |
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| CN (1) | CN105170194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479237A (en) * | 2019-09-17 | 2019-11-22 | 山东丰硕化工有限公司 | The preparation process of hexamethylene synthetic catalyst |
Citations (6)
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|---|---|---|---|---|
| EP0554104A2 (en) * | 1992-01-30 | 1993-08-04 | Ngk Insulators, Ltd. | Ceramic honeycomb structure with grooves and outer coating and process of producing the same |
| CN1292721A (en) * | 1998-03-11 | 2001-04-25 | 尤尼弗瑞克斯有限公司 | Support element for fragile structures such as catalytic converters |
| CN1352726A (en) * | 1999-06-08 | 2002-06-05 | 3M创新有限公司 | High temperature mat for a polltion control device |
| CN1684770A (en) * | 2002-09-25 | 2005-10-19 | 日本碍子株式会社 | Honeycomb catalyst carrier and method for production thereof |
| CN101349183A (en) * | 2007-07-20 | 2009-01-21 | 霓佳斯株式会社 | Catalytic converter, holding material for catalytic converter and production method thereof |
| CN102039206A (en) * | 2010-12-20 | 2011-05-04 | 成都东方凯特瑞环保催化剂有限责任公司 | Catalyst calcining box |
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2015
- 2015-09-17 CN CN201510594903.1A patent/CN105170194A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0554104A2 (en) * | 1992-01-30 | 1993-08-04 | Ngk Insulators, Ltd. | Ceramic honeycomb structure with grooves and outer coating and process of producing the same |
| CN1292721A (en) * | 1998-03-11 | 2001-04-25 | 尤尼弗瑞克斯有限公司 | Support element for fragile structures such as catalytic converters |
| CN1352726A (en) * | 1999-06-08 | 2002-06-05 | 3M创新有限公司 | High temperature mat for a polltion control device |
| CN1684770A (en) * | 2002-09-25 | 2005-10-19 | 日本碍子株式会社 | Honeycomb catalyst carrier and method for production thereof |
| CN101349183A (en) * | 2007-07-20 | 2009-01-21 | 霓佳斯株式会社 | Catalytic converter, holding material for catalytic converter and production method thereof |
| CN102039206A (en) * | 2010-12-20 | 2011-05-04 | 成都东方凯特瑞环保催化剂有限责任公司 | Catalyst calcining box |
Non-Patent Citations (1)
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| 杜海清主编: "《电瓷制造工艺》", 28 February 1983, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479237A (en) * | 2019-09-17 | 2019-11-22 | 山东丰硕化工有限公司 | The preparation process of hexamethylene synthetic catalyst |
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Application publication date: 20151223 |