CN101966471A - High-efficiency environmental-friendly catalyst carrier - Google Patents
High-efficiency environmental-friendly catalyst carrier Download PDFInfo
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- CN101966471A CN101966471A CN 201010267665 CN201010267665A CN101966471A CN 101966471 A CN101966471 A CN 101966471A CN 201010267665 CN201010267665 CN 201010267665 CN 201010267665 A CN201010267665 A CN 201010267665A CN 101966471 A CN101966471 A CN 101966471A
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Abstract
The invention discloses a high-efficiency environmental-friendly catalyst carrier, which comprises the raw materials of powdery silicon carbide with the content of 65-80% by weight and the fineness of 50-100 meshes, as well as synthetic organic clay with the content of 20-35% by weight, and is prepared by the steps of: uniformly mixing the two raw materials of the powdery silicon carbide and the synthetic organic clay, respectively adding and mixing 2-7% by weight of adhesive, 5-10% by weight of aids, and 3-5% by weight of lubricant by the total weight of the two raw materials as well as 8-15% of pore forming agent by volume ratio, adding a proper amount of distilled water after mixing and kneading into pastes, discharging, staling, extruding and molding into a tubular blank, airing, chopping into segments, drying and molding, delivering the molded blank into a kiln for heating, preserving the heat at 1250-1350DEG C, firing and cooling to obtain the finished product. The invention can take full advantages of large amount of waste green silicon carbide abrasive tools and high-temperature kilns, thereby saving mineral resources, facilitating to environmental protection and ecological balance, reducing the production cost of the catalyst carrier, protecting the catalyst from burning out, prolonging the service life of the catalyst and improving the working efficiency of reactors, and moreover, the catalyst carrier has the advantages of excellent regeneration conditions and favorable use performance.
Description
Technical field
The present invention relates to catalyst carrier, especially relate to the high-efficiency environment friendly catalyst carrier.
Background technology
As everyone knows, catalyst is a kind of purposes active material very widely, and it is made through PROCESS FOR TREATMENT with carrier and active constituent (heavy metal) material.Require differently with condition according to the industry operation technique, kind of carrier and manufacture method are also a lot, and the catalyst use amount maximum be industries such as chemical industry, petrochemical industry and smelting, particularly fine chemistry industry.At present, the catalyst carrier that these industries are used mainly adopts manufacturing process relative with equipment simple, and specific area high with AI
2O
3And SiO
2Be the oxide manufacturing of Main Ingredients and Appearance, because AI in these oxide carriers
2O
3And SiO
2Content is high and be mixed with more impurity, causes catalyst activity reduction under high-temperature and high-pressure conditions and other harsh service condition, reduces catalyst service life; Be because these oxide content height and chemical property are more active again, easily with catalyst in active constituent interact and the overall performance of change catalyst, cause catalyst in use to influence its heat conductivility, make reactor be easy to generate the temperature runaway phenomenon, cause sintering of catalyst.Simultaneously with AI
2O
3And SiO
2Make catalyst carrier for the oxide of Main Ingredients and Appearance (content is more than 70%), need to consume a large amount of mineral resources, pollute the environment, destroy the ecological balance, do not meet the requirement of national strategy and world's environmental protection development low-carbon economy; Be that existing catalyst carrier shape mostly is spherical granular or bar-shaped again, the pressure drop resistance is bigger, is unfavorable for that gas-liquid transforms and PROCESS FOR TREATMENT.
Summary of the invention
At the problem that catalyst carrier in the above-mentioned prior art exists, the invention provides and a kind ofly not only can fill) divide and utilize discarded object, economic environmental protection, and have the catalyst carrier of good combination property again.
The technical scheme that the technical problem to be solved in the present invention is taked is: it is that 65-80%wt, fineness are that 50-100 purpose powdery carborundum and component content are that the synthetic organic clay of 20-35%wt is a raw material with component content, step preparation as follows:
1, above-mentioned powdery carborundum and two kinds of raw materials of synthetic organic clay are evenly mixed, adding the lubricant of auxiliary agent, 3-5%wt of adhesive, the 5-10%wt of above-mentioned two kinds of raw material gross weight 2-7%wt and the pore creating material that accounts for raw material cumulative volume 8-15% more respectively mixes
2, mix the back and add an amount of distilled water and be kneaded into bulk, carry out after the discharging old,
3, adopt extrusion modling to make the tubulose base substrate, the section of cutting into behind the airing is carried out dryness finalization again and is become base substrate,
4, the base substrate of typing is sent into kiln and be heated under the 1250-1350 ℃ of temperature insulation and fire cooling and form.
Described powdery carborundum preferably is green six sides α-SiC crystal, purity carborundum more preferably greater than 99%; Described synthetic organic clay by viscosity greater than 50,000 units and K
2O+Na
2O content is not more than 0.5% organic clay and accounts for synthetic organic clay weight and is the dextrin of 1-5% and lignin and evenly mixes and be crushed to 1200 mesh sieve branches and form.
Described auxiliary agent is the blue or green powder in Ludox, field; Described pore creating material is 150-325 purpose white PP powder or 150-325 purpose carbon dust; Described adhesive is that viscosity is methylcellulose white powder, the third fine sour polypropylene or the Suzhou soil of 20-50 ten thousand units; Described lubricant is tung oil or other vegetable oil.
Described high-efficiency environment friendly catalyst carrier exogenic color is that green, surperficial feel are coarse, and its chemical analysis percentage is: SiC 65-80%, Na
2O content 0.1-0.3%, Fe
2O
3Content 0.4-0.8%, surplus is SiO
2And Al
2O
3
Described high-efficiency environment friendly catalyst carrier main performance index is:
Specific area: 0.05-0.1m
2/ g, voidage: 40-60%,
Carrier specification I type II type III type
Vertical compression strength＞(kg/) 10 86
Horizontal compression strength＞(kg/) 543
Wherein: the I molded dimension is: external diameter 7 ± 0.5, internal diameter 3.5 ± 0.3, high by 4 ± 0.2
The II molded dimension is: external diameter 6 ± 0.5, internal diameter 3 ± 0.3, high by 4 ± 0.2
The III molded dimension is: external diameter 5 ± 0.5, internal diameter 2.5 ± 0.3, high by 4 ± 0.2
The present invention can make full use of existing a large amount of discarded green silicon carbide grinding tool and Hightemperature Kiln Furnitures, through pulverizing, magnetic separation, screening and classification are handled and are made powdery carborundum, carborundum thermal conductivity factor height, thermal coefficient of expansion is little, chemical property is stable, and under conditions such as HTHP, has the good high-temperature non-oxidizability, heat-resisting shake stability is high, therefore can not reduce catalyst activity with carborundum as the catalyst carrier that the main material of catalyst carrier prepares, in the catalyst use, can guarantee the catalyst overall performance, be under the astable mode of operation at catalyst especially, can avoid making catalyst to be subjected to the disturbance of operating parameter and cause the local or whole temperature runaway phenomenon that produces of reactor, catalyst can not burnt, regeneration condition is superior, has prolonged catalyst service life, has improved the operating efficiency of reactor.
The present invention compared with prior art has the following advantages
1, can make full use of a large amount of discarded green silicon carbide grinding tool and Hightemperature Kiln Furniture, save mineral resources, help the environmental protection and the ecological balance,
2, can reduce the production cost of catalyst carrier, regeneration condition is superior, increase economic efficiency,
3, have good serviceability, can guarantee the catalyst activity performance, avoid the temperature runaway phenomenon, catalyst can not burnt, and can prolong catalyst service life, improves the operating efficiency of reactor.
4, carrier body ringwise, the pressure drop resistance is little, helps reactor operation and control.
The specific embodiment
Embodiment 1, and at first selecting fineness for use is that 50-100 order, purity are 99.6%, are the green powdery carborundum of six sides α-SiC crystal and select synthesis of clay for use that described synthesis of clay is 6.5 ten thousand units and K by viscosity
2O+ Na
2O content is 0.2% organic clay and occupies dextrin that machine clay weight is 3%wt and lignin mixes and was crushed to 1200 mesh sieve branches and forms, with above-mentioned carborundum and synthetic organic clay is raw material, by carborundum content is 72%wt, synthetic organic clay content is 28%wt, above-mentioned raw materials is evenly mixed, after the mixing, adding raw material gross weight 3%wt and viscosity more respectively is the methylcellulose white powder of 300,000 units, the Ludox that adds gross weight 7%wt, add the tung oil of gross weight 4%wt and account for raw material cumulative volume 12% (volume ratio), modulus is that 150-325 purpose white PP powder evenly mixed 30 minutes, then adding an amount of distilled water again and mediating made it become the bulk pug that has certain toughness in 1 hour, carried out after the discharging old 48 hours, adopt extrusion modling to form external diameter 7 ± 0.5, the tubulose base substrate that internal diameter is 3.5 ± 0.3 millimeters, tubulose base substrate nature airing is dry to the surface, then the tubulose base substrate is cut into the I type annular solid of 4 ± 0.2 millimeters of height (thick) on special-purpose machinery, again annular solid is carried out the air dry dehydration shaping, with the annular solid layering kiln of packing into, with kiln heating and under 1300 ℃ of temperature insulation fired in 15 hours, kiln discharge cools off naturally after being cooled to 200 ℃, the packing of testing again.
After testing, the every performance of embodiment 1 described catalyst carrier is:
1, the chemical analysis percentage composition is SiC:71.7%, Na
2O:0.21%, Fe
2O
3: 0.46%, SiO
2And AI
2O
3: 26.41%, all the other are impurity.Specific area: 0.08m
2/ g, voidage: 56%,
2, compression strength
Carrier specification I type II type III type
Vertical compression strength (kg/) 12 9 7.5
Horizontal compression strength (kg/) 6.2 4.8 3.5
Embodiment 2, and at first selecting fineness for use is that 50-100 order, purity are 99.6%, are the green powdery carborundum of six sides α-SiC crystal and select synthesis of clay for use that described synthetic organic clay is 7.5 ten thousand units and K by viscosity
2O+Na
2O content is 0.3% organic clay and occupies dextrin that machine clay weight is 5%wt and lignin mixes and was crushed to 1200 mesh sieve branches and forms, with above-mentioned carborundum and synthetic organic clay is raw material, by carborundum content is 80%wt, synthetic organic clay content is 20%wt, above-mentioned raw materials is evenly mixed, after the mixing, adding raw material gross weight 6%wt and viscosity more respectively is the methylcellulose white powder of 400,000 units, the Ludox that adds gross weight 9%, the tung oil and the raw material cumulative volume 9% (volume ratio) that add gross weight 5%wt, modulus is 150-325 purpose carbon dust even the closing 30 minutes that be mixed, then adding an amount of distilled water again and mediating made it become the bulk pug that has certain toughness in 1 hour, carried out after the discharging old 45 hours, adopt extrusion modling to form external diameter 6 ± 0.5, the tubulose base substrate that internal diameter is 3 ± 0.3 millimeters, tubulose base substrate nature airing is dry to the surface, then the tubulose base substrate is cut into the II type annular solid of 4 ± 0.2 millimeters of height (thick) on special-purpose machinery, again annular solid is carried out the air dry dehydration shaping, with the annular solid layering kiln of packing into, with kiln heating and under 1350 ℃ of temperature insulation fired in 16 hours, kiln discharge cools off naturally after being cooled to 200 ℃, tests and stores packing.
After testing, the every performance of embodiment 2 described catalyst carriers is:
1, the chemical analysis percentage composition is SiC:79.7%, Na
2O:0.28%, Fe
2O
3: 0.74%, SiO
2And AI
2O
3: 18.31%, all the other are impurity.Specific area: 0.068m
2/ g, voidage: 47%,
2, compression strength
Carrier specification I type II type III type
Vertical compression strength (kg/) 11.7 9.6 6.8
Horizontal compression strength (kg/) 5.8 5.1 3.62
Embodiment 3, and at first selecting fineness for use is that 50-100 order, purity are 99.6%, are the green powdery carborundum of six sides α-SiC crystal and select synthesis of clay for use that described synthesis of clay is 5.5 ten thousand units and K by viscosity
2O+Na
2O content is 0.46% organic clay and occupies dextrin that machine clay weight is 1.5%wt and lignin mixes and was crushed to 1200 mesh sieve branches and forms, with above-mentioned carborundum and synthetic organic clay is raw material, by carborundum content is 65%wt, synthetic organic clay content is 35%wt, above-mentioned two kinds of raw materials are evenly mixed, after the mixing, adding raw material gross weight 2%wt and viscosity more respectively is the methylcellulose white powder of 350,000 units, the Ludox that adds gross weight 5%wt, adding the tung oil of gross weight 3%wt and accounting for raw material cumulative volume 15% (volume ratio) modulus is that 150-325 purpose white PP powder evenly mixed 30 minutes, then adding an amount of distilled water and mediating made it become the bulk pug that has certain toughness in 1 hour, carried out after the discharging old 48 hours, adopt extrusion modling to form external diameter 5 ± 0.5, the tubulose base substrate that internal diameter is 2.5 ± 0.3 millimeters, tubulose base substrate nature airing is dry to the surface, then the tubulose base substrate is cut into the III type annular solid of 4 ± 0.2 millimeters of height (thick) on special-purpose machinery, again annular solid is carried out the air dry dehydration shaping, with the annular solid layering kiln of packing into, with kiln heating and under 1250 ℃ of temperature insulation fired in 13 hours, kiln discharge cools off naturally after being cooled to 200 ℃, the packing of testing again.
After testing, the every performance of embodiment 3 described catalyst carriers is:
1, the chemical analysis percentage composition is SiC:64.8%, Na
2O:0.28%, Fe
2O
3: 0.75%, SiO
2And AI
2O
3: 32.21%, all the other are impurity.Specific area: 0.058m
2/ g, voidage: 49%,
2, compression strength
Carrier specification I type II type III type
Vertical compression strength (kg/) 10.7 8.6 6.7
Horizontal compression strength (kg/) 5.5 4.7 3.32.
Claims (7)
1. high-efficiency environment friendly catalyst carrier is characterized in that: it is that 65-80%wt and fineness are that 50-100 purpose powdery carborundum and content are that the synthetic organic clay of 20-35%wt is a raw material with content, by following step preparation:
(1) above-mentioned powdery carborundum and two kinds of raw materials of synthetic organic clay are evenly mixed, adding the lubricant of auxiliary agent, 3-5%wt of adhesive, the 5-10%wt of above-mentioned two kinds of raw material gross weight 2-7%wt and the pore creating material that accounts for raw material cumulative volume 8-15% more respectively mixes
(2) mix the back and add an amount of distilled water and be kneaded into bulk, carry out after the discharging old,
(3) adopt extrusion modling to form the tubulose base substrate, the airing section of cutting into is carried out dryness finalization again and is become base substrate,
(4) base substrate of will finalizing the design is sent into kiln and is heated under the 1250-1350 ℃ of temperature insulation and fires cooling and form.
2. high-efficiency environment friendly catalyst carrier according to claim 1 is characterized in that: the chemical analysis percentage by weight of described high-efficiency environment friendly catalyst is SiC:65-80%, Na
2O:0.1-0.3%, Fe
2O
3: 0.4-0.8%, all the other are SiO
2And AI
2O
3
3. high-efficiency environment friendly catalyst carrier according to claim 1 is characterized in that: described powdery carborundum for green six sides α-SiC crystal, its carborundum purity greater than 99%.
4. high-efficiency environment friendly catalyst carrier according to claim 1 is characterized in that: described synthesis of clay uses viscosity greater than 50,000 units and K
2O+Na
2O content is not more than 0.5% organic clay and occupies dextrin that machine clay weight is 1-5% and lignin mixes and was crushed to 1200 mesh sieve branches and forms.
5. high-efficiency environment friendly catalyst carrier according to claim 1 is characterized in that: described pore creating material is 150-325 purpose white PP powder or 150-325 purpose carbon dust.
6. high-efficiency environment friendly catalyst carrier according to claim 1 is characterized in that: described adhesive is that viscosity is the methylcellulose white powder of 200,000-500,000 units.
7. according to claim 1 or 6 any one described high-efficiency environment friendly catalyst carrier, it is characterized in that: described high-efficiency environment friendly catalyst carrier is body ringwise.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102676650A CN101966471B (en) | 2010-04-23 | 2010-08-23 | High-efficiency environmental-friendly catalyst carrier |
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|---|---|---|---|
| CN201010155895.8 | 2010-04-23 | ||
| CN201010155895 | 2010-04-23 | ||
| CN2010102676650A CN101966471B (en) | 2010-04-23 | 2010-08-23 | High-efficiency environmental-friendly catalyst carrier |
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| CN101966471A true CN101966471A (en) | 2011-02-09 |
| CN101966471B CN101966471B (en) | 2012-01-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441439A (en) * | 2011-12-23 | 2012-05-09 | 萍乡市鑫泉工业填料实业有限公司 | Effective, environment-friendly and high-strength nest type support protecting agent and preparation method thereof |
| CN105439563A (en) * | 2014-08-28 | 2016-03-30 | 中国科学院大连化学物理研究所 | Integral porous carbon-silicon carbide composite material, and preparation method and application thereof |
| CN113797948A (en) * | 2021-08-31 | 2021-12-17 | 江西环宇工陶技术研究有限公司 | Catalyst carrier prepared by taking natural clay mineral as raw material and preparation method thereof |
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| CN1179353A (en) * | 1996-10-16 | 1998-04-22 | 中国科学院金属研究所 | Microwave purifying catalyst for automobile tail gas |
| US20050143255A1 (en) * | 2002-03-29 | 2005-06-30 | Ngk Insulators, Ltd., | Porous material and method for production thereof |
| CN101304961A (en) * | 2005-07-29 | 2008-11-12 | 欧洲技术研究圣戈班中心 | Method for preparing a porous structure using silica-based pore-forming agents |
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2010
- 2010-08-23 CN CN2010102676650A patent/CN101966471B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179353A (en) * | 1996-10-16 | 1998-04-22 | 中国科学院金属研究所 | Microwave purifying catalyst for automobile tail gas |
| US20050143255A1 (en) * | 2002-03-29 | 2005-06-30 | Ngk Insulators, Ltd., | Porous material and method for production thereof |
| CN101304961A (en) * | 2005-07-29 | 2008-11-12 | 欧洲技术研究圣戈班中心 | Method for preparing a porous structure using silica-based pore-forming agents |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441439A (en) * | 2011-12-23 | 2012-05-09 | 萍乡市鑫泉工业填料实业有限公司 | Effective, environment-friendly and high-strength nest type support protecting agent and preparation method thereof |
| CN102441439B (en) * | 2011-12-23 | 2014-05-07 | 萍乡市安发冶化环保填料有限公司 | Effective, environment-friendly and high-strength nest type support protecting agent and preparation method thereof |
| CN105439563A (en) * | 2014-08-28 | 2016-03-30 | 中国科学院大连化学物理研究所 | Integral porous carbon-silicon carbide composite material, and preparation method and application thereof |
| CN105439563B (en) * | 2014-08-28 | 2019-08-27 | 中国科学院大连化学物理研究所 | A kind of monolithic porous carbon fiber reinforced silicon carbide matrix composite and its preparation and application |
| CN113797948A (en) * | 2021-08-31 | 2021-12-17 | 江西环宇工陶技术研究有限公司 | Catalyst carrier prepared by taking natural clay mineral as raw material and preparation method thereof |
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Owner name: PINGXIANG XINQUAN INDUSTRIAL FILLING INDUSTRY CO., Free format text: FORMER OWNER: ZHOU JIANGLIN Effective date: 20111201 Free format text: FORMER OWNER: LI RIYAN Effective date: 20111201 |
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Effective date of registration: 20111201 Address after: 337016, Pingxiang, Jiangxi Province East Hunan (Pingxiang ceramic industry gathering area) Patentee after: Pingxiang Xinquan Industry Filling Industrial Co.,Ltd. Address before: 337000 No. 15, Lantian building, middle Park Road, Jiangxi, Pingxiang (Pingxiang Xinsheng industrial packing industry Co., Ltd.) Co-patentee before: Li Riyan Patentee before: Zhou Jianglin |
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