CN105727833A - Pellet seed preparation and pelletization methods - Google Patents
Pellet seed preparation and pelletization methods Download PDFInfo
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- CN105727833A CN105727833A CN201410743260.8A CN201410743260A CN105727833A CN 105727833 A CN105727833 A CN 105727833A CN 201410743260 A CN201410743260 A CN 201410743260A CN 105727833 A CN105727833 A CN 105727833A
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Abstract
The invention discloses pellet seed preparation and pelletization methods. The pellet seed preparation method comprises contacting powder and a liquid, compressing the mixture to obtain pellets and sieving the pellets to obtain pellet seeds. The pelletization method comprises 1, preparing the pellet seeds and 2, adding the pellet seeds into a rolling pelletization device and carrying out rolling pelletization, wherein the pellet seed preparation process utilizes the pellet seed preparation method. The methods realize continuous production, greatly improve production efficiency and an automation degree and improve a work environment.
Description
Technical field
The present invention relates to chemical field, in particular it relates to a kind of a kind of method of method preparing bead seed and balling-up.
Background technology
Tradition bead (referring to that diameter is less than 2mm) balling technique often in two steps: the first step is the production of hybrid seeds, slowly rolls powder, and add a small amount of liquid-containing binder in batches in spin pot, formed fine particle, as seed.This step must be slow, otherwise very easily forms bulky grain, causes production of hybrid seeds failure.Second step is long ball, based on seed, adds powder and liquid-containing binder, grows up into the bead of desired particle size gradually.The method is by action of gravity in spin pot, and powder repeatedly tumbles and carries out, and the time is long, and working environment is poor, and relies on artificial experience, operates discontinuous.
CN102177093A discloses the manufacture method of a kind of high-strength zeolite bead molding, mentions in globulation, is first mixed with Kaolin by zeolite, then add water, by rolling granulating and forming, screening, make the preform of Ф 1.7mm, i.e. seed, balling-up of growing up on this basis subsequently.The method is traditional balling technique, and its preform is to obtain by rolling pelletize in spin pot, and efficiency is low, the time is long.
Summary of the invention
It is an object of the invention to overcome in existing technology, have that production efficiency is low, working environment is poor, production process is discontinuous and rely on the defects such as manual operation, labor intensity are big and a kind of new method preparing bead seed is provided.
By aforementioned it is known that, the existing technology preparing bead seed is adopted (slowly to roll powder in spin pot, and add a small amount of liquid-containing binder in batches, form fine particle and bead seed), requiring significantly high to artificial operation, speed of production is slow, and efficiency is low, spin pot mouth has powder airborne dust, and working environment is poor.
Through long term test, the inventors found that, after the powder of mix homogeneously moistening in advance to certain water content, it is re-fed into compression device by powder compacting, then according to required granularity is sieved, obtain bead seed, this bead seed is joined roller-ball devices carries out roller forming, bead intensity that molding obtains is significantly high can reach technology requirement, and does not have the aforementioned drawback of prior art in preparing bead sub-processes.The present invention is completed based on above-mentioned discovery.
For realizing object defined above, the invention provides a kind of method preparing bead seed, the method includes: contacted with liquids by powder, and mixture after contact is compressed obtains particulate matter, is sieved by described particulate matter, obtains bead seed.
A kind of method that present invention also offers balling-up, the method includes:
(1) bead seed is prepared；
(2) described bead seed is joined roller-ball devices carries out roller forming；
Wherein, the method preparing bead seed carries out according to aforementioned described method.
By the method for the present invention, the bead intensity obtained is high, and achieves continuous production, is greatly improved production efficiency and automaticity, and working environment have also been obtained corresponding improvement simultaneously.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
The described method preparing bead seed provided by the invention includes: contacted with liquids by powder, and mixture after contact is compressed obtains particulate matter, is sieved by described particulate matter, obtains bead seed.
According to the present invention, described bead seed refers to and needs size homogeneous in the process of roller forming, and has the granule of some strength, and this granule is exactly bead seed.
Can realize the goal of the invention of the present invention according to the preceding method of the present invention, in order to better realize the goal of the invention of the present invention, it is preferable that in situation, the consumption of liquids makes water content in the mixture after contact be 35-50 weight %.
In the present invention, when in the mixture that the consumption of liquids makes after contact, water content is lower than 35 weight %, dust raising phenomenon is obvious, and also needs to supplement a certain amount of water in the process of roller forming, thus reducing work efficiency.
In the present invention, when in the mixture that the consumption of liquids makes after contact, water content is higher than 50 weight %, powder can be sticky, it may appear that sticks with paste net phenomenon, difficulty of sieving.
Can realize the goal of the invention of the present invention according to the preceding method of the present invention, in order to better realize the goal of the invention of the present invention, it is preferable that in situation, the consumption of liquids makes water content in the mixture after contact be 42-48 weight %.
Can realize the goal of the invention of the present invention according to the preceding method of the present invention, in order to better realize the goal of the invention of the present invention, it is preferable that in situation, the consumption of liquids makes water content in the mixture after contact be 45-46 weight %.
In the present invention, the selectable range of the kind of described liquids is wider, for instance, water and/or binding agent etc., all can realize the purpose of the present invention.For the present invention, it is preferable that in situation, described liquids is water.
The kind of described binding agent can be the conventional selection of this area, for instance can be Ludox, Alumina gel etc..
In the present invention, the selectable range of the kind of described powder is wider, powder commonly used in the art all can realize the purpose of the present invention, for the present invention, under preferable case, described powder is one or more in molecular sieve, Kaolin, bentonite and attapulgite, it is particularly preferred to for one or more in Kaolin and attapulgite.Wherein, preferably when described powder is molecular sieve, powder preferably also includes one or more in Kaolin, bentonite and attapulgite, and it is preferred that molecular sieve is 1-8:1 with one or more the weight ratio in Kaolin, bentonite and attapulgite, it is preferred to 3-5:1.
Bead seed in the present invention, the particle diameter of described powder do not had special requirement, as long as can be prepared on request.For the present invention, it is preferable that in situation, the particle diameter of described powder is less than 10 μm.
In the present invention, it is preferable that under stirring, adding described liquids with atomizing type and contact with described powder, wherein, stirring refers to that powder stirs in dispersing apparatus.Atomizing type refers to that liquids produces tiny drop by spray equipment, it is however generally that so that described powder is with dispersity after atomized drop mixing better (namely mixing homogeneously), the particle diameter of described atomized drop can be 0.1-500 μm.
In the present invention, it is possible to adopt atomizing sprayer jet atomization drop to provide atomized drop required for the present invention.Described atomizing sprayer can drench equipment, ultrasonic type sprinkling equipment, the continuous mixing machine with spray equipment or the kneader etc. with spray equipment for pressure-type spray, atomizing sprayer can also be able to be many shower nozzles for single spraying head, the present invention to this all without particular/special requirement.
Described dispersing apparatus can be dispersing apparatus well known in the art, it is generally the equipment with stirring inner member, can be such as kneader, banbury, double-cone mixer, trough type mixing machine or continuous mixing machine etc., wherein, it is preferred to kneader or continuous mixing machine.
In the present invention, it is possible to adopt compression device to realize obtaining particulate matter by compressed for the mixture after described contact.
Described compression device can be compression device well known in the art, can by the mixture compacted after described contact as long as general.Can be such as banded extruder, to tooth comminutor, chaser or roll extruding granulator etc..
In the present invention, pressure can being adopted to sieve the mixture after compressed equipment compacting, for instance oscillating granulator or rotating type granulating machine etc., wherein, this oscillating granulator or rotating type granulating machine are provided with the wire screen of corresponding order number on request.
The condition that described powder is contacted by the present invention with described liquids is without particular/special requirement, as long as making the described powder of the present invention reach water content and the mix homogeneously of application claims.
A kind of method that present invention also offers balling-up, the method includes: (1) prepares bead seed；
(2) described bead seed is joined roller-ball devices carries out roller forming；Wherein, the method preparing bead seed carries out according to aforementioned described method.
According to the invention it is preferred in situation, the average diameter of the bead that the bead seed method of making of the employing present invention obtains is less than 2mm.
Below by specific embodiment, the present invention is described in detail, but the scope of the present invention is not limited thereto.In example, strength detection method is shown in Chinese patent CN1261201C, represents with the percentage of damage under 250N pressure, and percentage of damage is more low, and intensity is more good.
Embodiment 1
By the molecular sieve powder (NaY of 80 weight % that particle diameter is less than 10 μm, water content is 20 weight %, asphalt in Shenli Refinery of Sinopec catalyst company limited produces) and kaolin powder (the Linfen, Shanxi Kaolin factory of 20 weight %, water content is 20 weight %) put into together and stir with in the continuous mixing machine of shower nozzle, in the process stirred, the shower nozzle of continuous mixing machine is constantly sprayed water in powder, powder is prewetted to 45 weight %, the powder being uniformly mixed from moisture 20 weight %.The powder of this mix homogeneously being put into compacting powder in banded extruder, obtains particulate matter, the particulate matter obtained is put into the oscillating granulator being provided with 30 order mesh screens and sieves, obtaining particle diameter is the 30 following bead seeds of order.This bead seed being put into spin in granulating disc (owing to water has added and puts in place when preparing bead seed, so this spin process is without adding water), grows up to the particle diameter bead less than 1.2mm, bead percentage of damage under 250N is 21%.
Prepare in the process of catalyst seed, put into due to powder and stir with in the continuous mixing machine of shower nozzle, spray water in stirring limit, limit, the water content making powder reaches 45 weight %, it does not have powder airborne dust, and working environment is improved, whole process does not have manual operation, labor intensity alleviates, it is achieved that continuous print produces, and is greatly improved production efficiency.
Embodiment 2
Catalyst seed and balling-up it is prepared according to the method for embodiment 1, the difference is that, powder is all Kaolin powder, and after prewetting, the water content of powder is 48%, obtains the particle diameter bead less than 1.2mm.Owing to powder is full clay composition, therefore intensity is higher, and bead percentage of damage under 250N is 5%.
Embodiment 3
Catalyst seed and balling-up it is prepared according to the method for embodiment 1, the difference is that, powder is all attapulgite powder (Mingguang, anhui attapulgite factory, water content is 21 weight %), after prewetting, the water content of powder is 42%, obtains the particle diameter bead less than 1.2mm.Owing to powder is full clay composition, therefore intensity is higher, and bead percentage of damage under 250N is 8%.
Embodiment 4
Catalyst seed and balling-up it is prepared according to the method for embodiment 1, the difference is that, after prewetting, the water content of powder is 50%, obtains the particle diameter bead less than 1.2mm, and bead percentage of damage under 250N is 23%.
Comparative example 1
By the molecular sieve powder (NaY of 80 weight % that particle diameter is less than 10 μm, water content is 20 weight %, asphalt in Shenli Refinery of Sinopec catalyst company limited produces) and kaolin powder (the Linfen, Shanxi Kaolin factory of 20 weight %, water content is 20 weight %) put in spin pot together, manual operation rolls lentamente, interval water spray, and observe powder state, gradually fine particle is had to occur, when grain diameter reaches about 0.5mm, impeller ramming a period of time, then put into the oscillating granulator being provided with 30 order mesh screens to sieve, obtaining particle diameter is the 30 following bead seeds of order.This bead seed being put into spin in granulating disc, grows up to the particle diameter bead less than 1.2mm, bead percentage of damage under 250N is 29%.
Preparing in the process of catalyst seed, owing to requiring significantly high to manual operation, so speed of production is slow, efficiency is low, and spin pot mouth has powder airborne dust, and working environment is poor.
The preferred embodiment of the present invention described in detail above; but, the present invention is not limited to the detail in above-mentioned embodiment, in the technology concept of the present invention; technical scheme can being carried out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by the present invention separately.
Additionally, can also carry out combination in any between the various different embodiment of the present invention, as long as it is without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. the method preparing bead seed, the method includes: contacted with liquids by powder, and mixture after contact is compressed obtains particulate matter, is sieved by described particulate matter, obtains bead seed.
2. method according to claim 1, wherein, the consumption of liquids makes water content in the mixture after contact be 35-50 weight %.
3. method according to claim 2, wherein, the consumption of liquids makes water content in the mixture after contact be 42-48 weight %.
4. the method according to any one of claim 1-3, wherein, described liquids is water and/or binding agent.
5. method according to claim 4, wherein, described liquids is water.
6. method according to claim 1, wherein, described powder is one or more in molecular sieve, Kaolin, bentonite and attapulgite.
7. the method according to claim 1 or 6, wherein, the particle diameter of described powder is less than 10 μm.
8. method according to claim 1, wherein, the method includes: under stirring, adds described liquids with atomizing type and contacts with described powder.
9. a method for balling-up, the method includes:
(1) bead seed is prepared；
(2) described bead seed is joined roller-ball devices carries out roller forming；
It is characterized in that, the method described in any one in claim 1-8 prepares bead seed.
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| CN201410743260.8A CN105727833B (en) | 2014-12-08 | 2014-12-08 | A method of preparing bead seed and balling-up |
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| CN201410743260.8A CN105727833B (en) | 2014-12-08 | 2014-12-08 | A method of preparing bead seed and balling-up |
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| CN105727833B CN105727833B (en) | 2019-11-15 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268726A (en) * | 2016-08-29 | 2017-01-04 | 苏州双湖化工技术有限公司 | A kind of preparation method of high-purity alpha-alumina bead carrier |
| CN106824254A (en) * | 2017-03-01 | 2017-06-13 | 中石化炼化工程（集团）股份有限公司 | A kind of special-shaped catalyst supporter and preparation method and application |
| CN106861768A (en) * | 2017-02-23 | 2017-06-20 | 中石化炼化工程（集团）股份有限公司 | A kind of moving bed pellet catalyst and preparation method thereof |
| CN109482143A (en) * | 2017-09-13 | 2019-03-19 | 正大能源材料(大连)有限公司 | A kind of adsorbent and its preparation and application for purifying low-carbon alkene |
| CN110237771A (en) * | 2019-06-28 | 2019-09-17 | 上海化工研究院有限公司 | A kind of preparation method of ball-type molecular sieve |
| CN110639409A (en) * | 2019-09-17 | 2020-01-03 | 清华大学 | Method and device for preparing homogeneous catalyst slurry with controllable concentration |
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| EP0488199A1 (en) * | 1990-11-27 | 1992-06-03 | ENICHEM AGRICOLTURA S.p.A. | Process for granulating potassium salts |
| CN102274703A (en) * | 2011-05-31 | 2011-12-14 | 山东奥诺能源科技有限公司 | Large-scale continuous energy-saving fluidized bed spraying, granulating and drying process |
| CN103071470A (en) * | 2011-10-25 | 2013-05-01 | 中国石油化工股份有限公司 | Absorbent pelletizing method |
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Patent Citations (3)
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| EP0488199A1 (en) * | 1990-11-27 | 1992-06-03 | ENICHEM AGRICOLTURA S.p.A. | Process for granulating potassium salts |
| CN102274703A (en) * | 2011-05-31 | 2011-12-14 | 山东奥诺能源科技有限公司 | Large-scale continuous energy-saving fluidized bed spraying, granulating and drying process |
| CN103071470A (en) * | 2011-10-25 | 2013-05-01 | 中国石油化工股份有限公司 | Absorbent pelletizing method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268726A (en) * | 2016-08-29 | 2017-01-04 | 苏州双湖化工技术有限公司 | A kind of preparation method of high-purity alpha-alumina bead carrier |
| CN106861768A (en) * | 2017-02-23 | 2017-06-20 | 中石化炼化工程（集团）股份有限公司 | A kind of moving bed pellet catalyst and preparation method thereof |
| CN106824254A (en) * | 2017-03-01 | 2017-06-13 | 中石化炼化工程（集团）股份有限公司 | A kind of special-shaped catalyst supporter and preparation method and application |
| CN109482143A (en) * | 2017-09-13 | 2019-03-19 | 正大能源材料(大连)有限公司 | A kind of adsorbent and its preparation and application for purifying low-carbon alkene |
| CN109482143B (en) * | 2017-09-13 | 2022-05-24 | 正大能源材料(大连)有限公司 | Adsorbent for purifying low-carbon olefin and preparation and application thereof |
| CN110237771A (en) * | 2019-06-28 | 2019-09-17 | 上海化工研究院有限公司 | A kind of preparation method of ball-type molecular sieve |
| CN110639409A (en) * | 2019-09-17 | 2020-01-03 | 清华大学 | Method and device for preparing homogeneous catalyst slurry with controllable concentration |
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| CN105727833B (en) | 2019-11-15 |
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