CN106747350A - A kind of manufacture method of ceramic honey comb support protective agent - Google Patents
A kind of manufacture method of ceramic honey comb support protective agent Download PDFInfo
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- CN106747350A CN106747350A CN201611092678.2A CN201611092678A CN106747350A CN 106747350 A CN106747350 A CN 106747350A CN 201611092678 A CN201611092678 A CN 201611092678A CN 106747350 A CN106747350 A CN 106747350A
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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Abstract
The present invention relates to a kind of manufacture method of ceramic honey comb support protective agent, comprise the following steps：1. dispensing：80 ~ 90 parts of high alumina mud, 2 ~ 3 parts of calcining α alundum (Al2O3)s, 8 ~ 10 parts of cellulose, 1 ~ 2 part of aluminum stearate, 1 ~ 3 part of preparation raw material of rapeseed oil are weighed in mass ratio；2. mediate；3. vacuum pugging；4. extrusion molding；5. cut off；6. cut, the ceramic honey comb protective agent semi-finished product being molded；7. screening is selected：The ceramic honey comb support protective agent semi-finished product of deformation, crackle are chosen return to step 3；8. loading of kiln, sintering and shaping.Present invention process is simple, and easy to operate, labour intensity is low, and product quality is stable and fine quality production process is quite environmentally friendly.
Description
Technical field
The invention belongs to ceramic technology field, particularly a kind of manufacture method of ceramic honey comb support protective agent.
Background technology
Ceramic honey comb is a kind of new ceramics product of structure for developing in the last thirty years like honeycomb shape, is 1
One of planning main project.
Ceramic honey comb product purpose is a lot, can be used as catalyst carrier, refractory kiln, wall-flow filter etc..Honeycomb is made pottery
Porcelain products by earliest be used for kart tail gas clean-up to today be widely used in electric power, chemical industry, metallurgy, oil, electronic apparatus,
In the industry such as machinery, and more and more extensively, development prospect is considerable.It is important in the industries such as oil refining, petrochemical industry, environmental protection and metallurgy
Fixed bed reactors equipment（It is mainly used in catalytic reaction in tower, such as ammonia convertor, sulfur dioxide contact oxidation device, hydro carbons steams
Catalytic reforming in vapour reburner and oil refining, hydrodesulfurization, it is hydrocracked and refines, and ethylene, ethylbenzene dehydrogenation etc. are solid
Fixed bed reactor）, the protective agent of its catalyst is exactly ceramic honey comb product.
Ceramic honey comb divides from shaping, the ceramic honey comb that has sinter molding at present, the ceramic honey comb not sintered.Sinter molding
Ceramic honey comb it is higher than the intensity not sintered, it is durable the advantages of.Ceramic honey comb from apparent size can be divided into ball shape, column,
Square and circle, the ceramic honey comb of its central post honeycomb type then has larger specific surface area.It is presently used in oil, chemical industry
Catalyst protective agent be upright post type, specification has Φ 3 × 6, Φ 6 × 6, Φ 9 × 6, Φ 13 × 10, Φ 18 × 10 etc., these
The ceramic honey comb protective agent of different size can be fabricated to different size different shape different structure according to the difference of mold design
Ceramic honey comb.
The raw material of production ceramic honey comb is mainly kaolin, talcum powder, aluminium powder, clay etc. earliest.But the honeycomb produced
Ceramic performance is poor.Now in order to improve its physical properties, also constantly in the height that development and application are new in ceramic field
Performance raw material, such as diatomite, zeolite, swelled ground, cordierite, mullite, aluminium titanates, activated carbon, carborundum, zirconium oxide, work
Property aluminum oxide etc., also using composite interstitial substances such as dichroite-mullite, cordierite-aluminium titanates, but these raw material price
Expensive, cost is very high.
The content of the invention
The purpose of the present invention is directed to shortcoming present in background technology and problem is improved and innovated, there is provided Yi Zhongchong
Amount is light, voidage is high, specific surface area is big, resistance to acids and bases good, intensity is high, cross-sectional hole is uniformly dispersed, intercept impurity energy
The manufacture method of the strong ceramic honey comb support protective agent of power.
The technical scheme is that constructing a kind of manufacture method of ceramic honey comb support protective agent, comprise the following steps：
1. dispensing：80 ~ 90 parts of high alumina mud, 2 ~ 3 parts of α-alundum (Al2O3) of calcining, 8 ~ 10 parts of cellulose are weighed in mass ratio, it is stearic
1 ~ 2 part of sour aluminium, 1 ~ 3 part of preparation raw material of rapeseed oil；
2. mediate：The high alumina mud that will be weighed up in step 1 is poured into kneading tank, after mediating 5 ~ 6min, by calcining α-three oxidations two
Aluminium, cellulose, aluminum stearate, rapeseed oil are sequentially added into kneading tank, then mediate 22 ~ 30min；
3. vacuum pugging：The kneaded material of upper step 2 is put into the charging aperture of the vacuum deairing machine of -0.08 ~ -0.09MPa, in
Discharging opening connects the material of extrusion；
4. extrusion molding：The pug that step 3 is obtained is cut into 20-30cm/ roots, is then squeezed in the extruder of 13-30MPa
Pressure, the base substrate of extrusion molding；
5. cut off：The base substrate that will be obtained in step 4 cuts into the mud bar of 15-20cm；
6. cut：The mud bar that step 5 is obtained cuts in being put into cutting machine, the ceramic honey comb protective agent semi-finished product being molded；
7. screening is selected：The ceramic honey comb support protective agent semi-finished product of deformation, crackle are chosen return to step 3, intact honeycomb
Ceramics protectant semi-finished product enter next step；
8. loading of kiln, sintering and shaping：The intact ceramic honey comb support protective agent semi-finished product that will be picked out in step 7 are with furnace temperature
Heated up, 1.5 ~ 2.5h shapings are sintered in 1200 ~ 1400 DEG C of sintering furnaces, obtained final product ceramic honey comb support protective agent.
More preferably, the mass component of the raw material is：85 parts of high alumina mud, 2.5 parts of α-alundum (Al2O3) of calcining, cellulose
9 parts, 1.5 parts of aluminum stearate, 2 parts of rapeseed oil.
Wherein in one embodiment, the moisture in the step 1 in high alumina mud is 28 ± 2%（Mass ratio）, it is described
Calcining α-alundum (Al2O3) moisture content≤0.3%（Mass ratio）, D50 is 3-5um, D90 ＜ 10um.
Wherein in one embodiment, the vacuum of vacuum deairing machine is -0.086MPa in the step 3.
More preferably, ceramic honey comb support protective agent semi-finished product are carried out as follows intensification with furnace temperature in the step 8：
Room temperature ~ 300 DEG C, heating rate is 0.9 ~ 1.3 DEG C/min；300 ~ 950 DEG C, heating rate is 0.9 ~ 1.3 DEG C/min；950~1300
DEG C, heating rate is 0.9 ~ 1.3 DEG C/min.
More preferably, ceramic honey comb support protective agent semi-finished product are carried out as follows intensification with furnace temperature in the step 8：
Room temperature ~ 300 DEG C, heating rate is：- 300 DEG C of heating rates of room temperature are 1.1 DEG C/min, 300-950 DEG C of heating rate be 2.3 DEG C/
Min, 950-1300 DEG C of heating rates are 1.9 DEG C/min, and 2h is incubated at 1300 DEG C.
The advantages of the present invention：
1. process is simple, easy to operate.There is no, using complicated equipment, cumbersome technological process do not occur in the present invention yet,
Therefore the process is simple for enterprise, easy to operate；
2. high degree of automation, labour intensity is low.Most of flow is all automatically brought into operation by machinery equipment in the present invention, such as：Pinch
Close operation kneader；The automatic vacuum pug mill that pugging operation is also；Cutting machine etc. has been used in cutting；Workman only needs to
Aside control the labour intensity of workman in various operating parameters, therefore the technological process very low；
3. product quality is stablized and high-quality.Major part is completed by machine automatization in technological operation of the invention, as long as behaviour
Make parameter, such as weight proportion, temperature, time, length, pressure is controlled in strict accordance with the parameter of regulation, it is possible to is ensured and is produced
The stabilization of quality；
4. product quality is high, belongs to high-quality product.Product of the invention has carried out Specifications with domestic like product
Contrast, product of the invention has that lightweight, voidage is high, specific surface area is big, resistance to acids and bases good, intensity is high, cross-sectional hole
Be uniformly dispersed, intercept impurity ability it is strong many advantages, such as.Therefore present invention gained ceramic honey comb support protective agent quality is high,
Can be very good to meet catalyst in oil refining, the fixed bed reactors that chemical industry, gas treatment and environmental protection industry (epi) are used support and
Protection；
5. product diversification.Present invention process adapts to the production of all size ceramic honey comb support protective agent product, and such as Φ 3 ×
6th, Φ 6 × 6, Φ 9 × 6, Φ 13 × 10, Φ 18 × 10 etc., therefore product diversification, can meet the various needs of in the market；
6. the disposable qualification rate of product is high, waste product is few.According to measuring and calculating, the disposable qualification rate of product of the invention is up to more than 99.5%,
It is once underproof to can return to the pugging repeatedly of vacuum pugging operation, in addition to less than 0.2% loss, produced almost without waste product, work
Industry waste product is few, and production process is quite environmentally friendly.
Brief description of the drawings
Fig. 1 is the horizontal photo of the product ceramic honey comb support protective agent high of Φ 3 × 6 obtained in example 1；
Fig. 2 is longitudinal photo of the product ceramic honey comb support protective agent high of Φ 3 × 6 obtained in example 1（4 holes）；
Fig. 3 is the horizontal photo of the product ceramic honey comb support protective agent high of Φ 6 × 6 obtained in example 2；
Fig. 4 is longitudinal photo of the product ceramic honey comb support protective agent high of Φ 6 × 6 obtained in example 2（6 holes）；
Fig. 5 is the horizontal photo of the product ceramic honey comb support protective agent high of Φ 13 × 10 obtained in example 3；
Fig. 6 is longitudinal photo of the product ceramic honey comb support protective agent high of Φ 13 × 10 obtained in example 3（24 holes）.
Specific embodiment
Unless otherwise defined, the skill of all of technology used herein and scientific terminology and technical field of the invention
The implication that art personnel are generally understood that is identical.Term used in the description is intended merely to describe specifically to implement purpose, is not
It is intended to the limitation present invention.
Embodiment 1
The manufacture of the product ceramic honey comb support protective agents high of Φ 3 × 6：
High alumina mud 127.5Kg is weighed respectively（Water content：26.7%）, calcine α-alundum (Al2O3) 3.75Kg（Moisture content≤0.3%,
D50 is 3-5um, D90 ＜ 10um）, cellulose 13.50Kg, aluminum stearate 2.25Kg, rapeseed oil 3.00Kg；Then will weigh up
High alumina mud is poured into kneading tank, after mediating 5min, calcining α-alundum (Al2O3), cellulose, aluminum stearate, the rapeseed oil that will be prepared
It is sequentially added into kneading tank, then mediates 25min；The vacuum that kneaded mixing pug puts into -0.086MPa at leisure is practiced
The charging aperture of mud machine, in the material that discharging opening connects extrusion is put in material holding tray；Then pug is cut into 20-30cm/ roots, Ran Houyu
Extruded in the extruder of 18MPa, you can the base substrate of extrusion molding；Base substrate is cut into the mud bar of 15-20cm；Mud bar is put into again
The ceramic honey comb protective agent semi-finished product that can be just molded are cut in cutting machine；The ceramic honey comb of deformation, crackle is supported protection
Agent semi-finished product choose return vacuum pugging operation, and intact ceramic honey comb support protective agent semi-finished product are put into sintering furnace by room
- 300 DEG C of heating rates of temperature are 1 DEG C/min, and 300-950 DEG C of heating rate is 2.2 DEG C/min, and 950-1300 DEG C of heating rates are
1.8 DEG C/min, the heating rate that 2h is incubated at 1300 DEG C is sintered, and finally can obtain the ceramic honey comb support protection of high-quality
Agent.
Accompanying drawing 1,2 is respectively horizontal, longitudinal photo of the ceramic honey comb support protective agent obtained in the present embodiment.
Embodiment 2
The manufacture of the high-quality ceramic honey comb support protective agents of Φ 6 × 6：
High alumina mud 130.9Kg is weighed respectively（Water content：26.7%）, calcine α-alundum (Al2O3) 3.85Kg（Moisture content≤0.3%,
D50 is 3-5um, D90 ＜ 10um）, cellulose 13.86Kg, aluminum stearate 2.31Kg, rapeseed oil 3.08Kg；Then will weigh up
High alumina mud is poured into kneading tank, after mediating 5min, calcining α-alundum (Al2O3), cellulose, aluminum stearate, the rapeseed oil that will be prepared
It is sequentially added into kneading tank, then mediates 25min；The vacuum that kneaded mixing pug puts into -0.086MPa at leisure is practiced
The charging aperture of mud machine, in the material that discharging opening connects extrusion is put in material holding tray；Then pug is cut into 20-30cm/ roots, Ran Houyu
Extruded in the extruder of 22MPa, you can the base substrate of extrusion molding；Base substrate is cut into the mud bar of 15-20cm；Mud bar is put into again
The ceramic honey comb protective agent semi-finished product that can be just molded are cut in cutting machine；The ceramic honey comb of deformation, crackle is supported protection
Agent semi-finished product choose return vacuum pugging operation, and intact ceramic honey comb support protective agent semi-finished product are put into sintering furnace by spy
Fixed heating curve（I.e. -300 DEG C of heating rates of room temperature are 1.1 DEG C/min, and 300-950 DEG C of heating rate is 2.3 DEG C/min,
950-1300 DEG C of heating rates are 1.9 DEG C/min, and 2h is incubated at 1300 DEG C）It is sintered, finally can obtain the honeycomb of high-quality
Ceramic support protective agent.
Accompanying drawing 3,4 is respectively horizontal, longitudinal photo of the ceramic honey comb support protective agent obtained in the present embodiment.
Embodiment 3
The manufacture of the high-quality ceramic honey comb support protective agents of Φ 13 × 10：
High alumina mud 129.2Kg is weighed respectively（Water content：26.7%）, calcine α-alundum (Al2O3) 3.80Kg（Moisture content≤0.3%,
D50 is 3-5um, D90 ＜ 10um）, cellulose 13.68Kg, aluminum stearate 2.28Kg, rapeseed oil 3.04Kg；Then will weigh up
High alumina mud is poured into kneading tank, after mediating 5min, calcining α-alundum (Al2O3), cellulose, aluminum stearate, the rapeseed oil that will be prepared
It is sequentially added into kneading tank, then mediates 25min；The vacuum that kneaded mixing pug puts into -0.086Mpa at leisure is practiced
The charging aperture of mud machine, in the material that discharging opening connects extrusion is put in material holding tray；Then pug is cut into 20-30cm/ roots, Ran Houyu
Extruded in the extruder of 28MPa, you can the base substrate of extrusion molding；Base substrate is cut into the mud bar of 15-20cm；Mud bar is put into again
The ceramic honey comb protective agent semi-finished product that can be just molded are cut in cutting machine；The ceramic honey comb of deformation, crackle is supported protection
Agent semi-finished product choose return vacuum pugging operation, and intact ceramic honey comb support protective agent semi-finished product are put into sintering furnace by spy
Fixed heating curve（I.e. room temperature-300 DEG C heating rate is 1.2 DEG C/min, and 300-950 DEG C of heating rates are 2.4 DEG C/min,
950-1300 DEG C of heating rates are 2.0 DEG C/min, and 2h is incubated at 1300 DEG C）It is sintered, finally can obtain the honeycomb of high-quality
Ceramic support protective agent.
Accompanying drawing 5,6 is respectively horizontal, longitudinal photo of the ceramic honey comb support protective agent obtained in the present embodiment.
The three kinds of products of specification obtained in above three embodiment and domestic like product physical property contrast such as following table
It is shown：
Can be seen that the product that the method for the invention obtains from accompanying drawing and upper table has that lightweight, voidage is high, specific surface area
Greatly, many advantages, such as resistance to acids and bases is good, intensity is high, cross-sectional hole is uniformly dispersed, to intercept impurity ability strong.Therefore this hair
Bright gained ceramic honey comb support protective agent quality is high, can be very good satisfaction oil refining, chemical industry, gas treatment and environmental protection industry (epi) and uses
Fixed bed reactors in catalyst support and protection.
In view of produced problem in background technology, the present invention is in terms of raw material, technique and machine-building etc. is changed
Enter, using specific formula and special production technology produce with lightweight, voidage it is high, specific surface area is big, acid and alkali-resistance
The high-quality ceramic honey comb support protective agent that good, intensity is high, cross-sectional hole is uniformly dispersed for property, to intercept impurity ability strong.
According to measuring and calculating, cracking rate is less than 0.5% when the technique is manufactured.
Because ceramic honey comb application is increasingly extensive, the present invention is very suitable for carrying out popularization and application in industrial quarters.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Spirit and scope are defined, and on the premise of design philosophy of the present invention is not departed from, engineers and technicians are to this hair in this area
The all variations and modifications that bright technical scheme is made, all should fall into protection scope of the present invention, claimed skill of the invention
Art content, has all recorded in detail in the claims.
Claims (6)
1. a kind of manufacture method of ceramic honey comb support protective agent, it is characterised in that comprise the following steps：
1）Dispensing：80 ~ 90 parts of high alumina mud, 2 ~ 3 parts of α-alundum (Al2O3) of calcining, 8 ~ 10 parts of cellulose are weighed in mass ratio, it is stearic
1 ~ 2 part of sour aluminium, 1 ~ 3 part of preparation raw material of rapeseed oil；
2）Mediate：The high alumina mud that will be weighed up in step 1 pour into kneading tank in, mediate 5 ~ 6min after, will calcining α-alundum (Al2O3),
Cellulose, aluminum stearate, rapeseed oil are sequentially added into kneading tank, then mediate 22 ~ 30min；
3）Vacuum pugging：The kneaded material of upper step 2 is put into the charging aperture of the vacuum deairing machine of -0.08 ~ -0.09MPa, in going out
Material mouth connects the material of extrusion；
4）Extrusion molding：The pug that step 3 is obtained is cut into 20-30cm/ roots, is then squeezed in the extruder of 13-30MPa
Pressure, the base substrate of extrusion molding；
5）Cut-out：The base substrate that will be obtained in step 4 cuts into the mud bar of 15-20cm；
6）Cutting：The mud bar that step 5 is obtained cuts in being put into cutting machine, the ceramic honey comb protective agent semi-finished product being molded；
7）Screening is selected：The ceramic honey comb support protective agent semi-finished product of deformation, crackle are chosen return to step 3, intact honeycomb
Ceramics protectant semi-finished product enter next step；
8）Loading of kiln, sintering and shaping：The intact ceramic honey comb support protective agent semi-finished product that will be picked out in step 7 enter with furnace temperature
Row is heated up, and 1.5 ~ 2.5h shapings are sintered in 1200 ~ 1400 DEG C of sintering furnaces, obtains final product ceramic honey comb support protective agent.
2. the manufacture method of ceramic honey comb support protective agent according to claim 1, it is characterised in that：The step 1）In
The quality component of raw material is：85 parts of high alumina mud, 2.5 parts of α-alundum (Al2O3) of calcining, 9 parts of cellulose, 1.5 parts of aluminum stearate, dish
2 parts of seed oil.
3. the manufacture method of ceramic honey comb support protective agent according to claim 1, it is characterised in that：The step 1）In
Moisture in high alumina mud is 28 ± 2%（Mass ratio）, calcining α-alundum (Al2O3) moisture content≤0.3%（Mass ratio）, D50
It is 3-5um, D90 ＜ 10um.
4. the manufacture method of ceramic honey comb support protective agent according to claim 1, it is characterised in that：The step 3）In
The vacuum of vacuum deairing machine is -0.086MPa.
5. the manufacture method of ceramic honey comb support protective agent according to claim 1, it is characterised in that：The step 8）In
Ceramic honey comb support protective agent semi-finished product are carried out as follows intensification with furnace temperature：Room temperature ~ 300 DEG C, heating rate be 0.9 ~
1.3℃/min；300 ~ 950 DEG C, heating rate is 0.9 ~ 1.3 DEG C/min；950 ~ 1300 DEG C, heating rate be 0.9 ~ 1.3 DEG C/
min。
6. the manufacture method of ceramic honey comb support protective agent according to claim 1, it is characterised in that：The step 8）In
Ceramic honey comb support protective agent semi-finished product are carried out as follows intensification with furnace temperature：Room temperature ~ 300 DEG C, heating rate is：Room
- 300 DEG C of heating rates of temperature are 1.1 DEG C/min, and 300-950 DEG C of heating rate is 2.3 DEG C/min, 950-1300 DEG C of heating rates
It is 1.9 DEG C/min, 2h is incubated at 1300 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108947440A (en) * | 2018-08-17 | 2018-12-07 | 佛山市禅城区诺高环保科技有限公司 | A kind of high cracking resistance land plaster |
Citations (6)
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| US20090098333A1 (en) * | 2007-10-15 | 2009-04-16 | Ibiden Co., Ltd. | Honeycomb structure and method for manufacturing the honeycomb structure |
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| CN104888864A (en) * | 2015-04-30 | 2015-09-09 | 江西应陶康顺实业有限公司 | Honeycomb nest hydrogenation protecting agent |
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| US20090098333A1 (en) * | 2007-10-15 | 2009-04-16 | Ibiden Co., Ltd. | Honeycomb structure and method for manufacturing the honeycomb structure |
| CN101823006A (en) * | 2010-04-08 | 2010-09-08 | 姚光纯 | Honeycomb nest proppant and process of applying same to fixed bed reactor |
| CN102513162A (en) * | 2011-10-26 | 2012-06-27 | 邬树其 | Catalyst web nest support protective agent and manufacturing method thereof |
| CN102731106A (en) * | 2012-07-03 | 2012-10-17 | 宜兴王子环保科技有限公司 | Method for preparing thin-wall low-expansion high-thermal shock resistance cordierite honeycomb body |
| CN104492503A (en) * | 2014-12-25 | 2015-04-08 | 萍乡市中天化工填料有限公司 | Spherical honeycomb support protecting agent of catalyst and preparation method of spherical honeycomb support protecting agent |
| CN104888864A (en) * | 2015-04-30 | 2015-09-09 | 江西应陶康顺实业有限公司 | Honeycomb nest hydrogenation protecting agent |
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| CN108947440A (en) * | 2018-08-17 | 2018-12-07 | 佛山市禅城区诺高环保科技有限公司 | A kind of high cracking resistance land plaster |
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| CN106747350B (en) | 2019-10-25 |
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