CN103170317A - Method for improving intensity of molecular sieve - Google Patents
Method for improving intensity of molecular sieve Download PDFInfo
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- CN103170317A CN103170317A CN2011104423285A CN201110442328A CN103170317A CN 103170317 A CN103170317 A CN 103170317A CN 2011104423285 A CN2011104423285 A CN 2011104423285A CN 201110442328 A CN201110442328 A CN 201110442328A CN 103170317 A CN103170317 A CN 103170317A
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- molecular sieve
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- abrasive disk
- type kneader
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Abstract
The invention provides a method for improving the intensity of a molecular sieve. The method for improving the intensity of the molecular sieve comprises the flowing steps of: (a) mixing 70-90 parts of zeolite and 10-30 parts of clay binder in an abrasive disc type kneader so as to obtain a mixing mixture, (b) adding 25-50 parts of water in the mixing mixture, kneading the mixing mixture for 30-60 minutes in the abrasive disc type kneader so as to obtain a kneading mixture, (c) preparing the kneading mixture into a powder mixed raw material, and (d) molding the powder mixed raw material so as to obtain the molecular sieve. The invention provides the method for improving the intensity of the molecular sieve without lowering the performance of the molecular sieve.
Description
Technical field
The present invention relates to a kind of method that improves molecular sieve intensity.
Background technology
Along with the develop rapidly of refrigeration industry, to the also raising thereupon of requirement of the necessary various model adsorbent of molecular sieve of cold-producing medium purification, the industry requirement adsorbent of molecular sieve has following characteristics:
1. increase the service life
2. molecular sieve percentage of damage in use is little
3. molecular sieve has larger density
Usually, the sorbent molecule sieve that common process is produced adopts the cone-type mixer batch mixing to mediate, and adopts dry-press process.But the intensity index of existing adsorbent of molecular sieve is lower.
Similarly, along with the development of auto industry, the requirement of the air drying type molecular sieve that heavy brake and drive system for vehicle with tow is used also is greatly improved, and the sector wishes to obtain the molecular sieve of long-time Reusability equally.So, traditional molecular sieve is made proposed Secretary, need to have a kind of more high-intensity adsorbent of molecular sieve product to optimize traditional molecular sieve.
In sum, this area lacks a kind of preparation method who improves molecular sieve intensity and do not affect molecular sieve performance.
Summary of the invention
The object of the invention is to obtain a kind of intensity higher and do not affect the adsorbent of molecular sieve product of molecular sieve performance.
The invention provides a kind of method that improves molecular sieve intensity, it comprises the steps:
(a) provide zeolite 70-90 weight portion, clay bond 10-30 weight portion, described raw material is carried out batch mixing in the abrasive disk type kneader, obtain the batch mixing mixture;
(b) with after adding the water of 25-50 weight portion in the batch mixing mixture, continue to mediate 30-60 minute in described abrasive disk type kneader, obtain mediating mixture;
(c) described kneading mixture is made the powder mixed material;
(d) described powder mixed material carries out moulding, obtains molecular sieve.
In a specific embodiment of the present invention, described clay bond is kaolin.
In a preference, the kneading mixture that described step (b) obtains is hydrate.
In a specific embodiment of the present invention, in described step (c), described kneading mixture is made the powder mixed material in powder beater.
In a specific embodiment of the present invention, adopt weight to be not less than the kneading wheel of 350kg in described abrasive disk type kneader.
In a specific embodiment of the present invention, adopt elastic strength to be not less than the pressure spring of ∮ 12mm spring in described abrasive disk type kneader.
In a specific embodiment of the present invention, adopt peripheral back-up ring in described abrasive disk type kneader.
In a specific embodiment of the present invention, adopt peripheral material scraping plate and bottom material rotating plate in described abrasive disk type kneader.
Description of drawings
Fig. 1 be the 4A molecular sieve adopt respectively the dry-press process of prior art and wet moulding of the present invention Performance Ratio;
Fig. 2 be the 3A molecular sieve adopt respectively the dry-press process of prior art and wet moulding of the present invention Performance Ratio.
The specific embodiment
The inventor by improving preparation technology, utilizes binding agent can fully produce the characteristic of viscosity through extensive and deep research under aquation, adopts specific method to improve the intensity index of final products.Completed on this basis the present invention.
Design of the present invention is as follows:
The moulding of the sorbent molecule sieve in the present invention utilizes binding agent can fully produce the characteristic of viscosity under aquation, improves the intensity index of final products, and finds that it does not affect the absorption property of molecular sieve.More specifically, in order to obtain high intensity molecular sieve, the present invention with spherical molecular sieve as research object, change moulding process in molecular sieve molded operation, by the dry-press process of routine, change into wet moulding, investigated the later product intensity of roasting, by optimizing the intensity index of final products, test value has improved 50%.
Below describe in detail to various aspects of the present invention:
The method of raising molecular sieve of the present invention, it comprises the steps:
(a) provide zeolite 70-90 weight portion, clay bond 10-30 weight portion, described raw material is carried out batch mixing in the abrasive disk type kneader, obtain the batch mixing mixture;
(b) with after adding the water of 25-50 weight portion in the batch mixing mixture, continue to mediate 30-60 minute in described abrasive disk type kneader, obtain mediating mixture;
(c) described kneading mixture is made the powder mixed material;
(d) described powder mixed material carries out moulding, obtains molecular sieve.
The inventor finds, this kind kneading process has taken full advantage of and brought into play the aquation of clay bond, and fully the opening of binding agent tubular structure increased the combination of itself and former powder particles, makes the intensity of last molecular sieve greatly improve.
Particularly, in conventional dry technique, adopt following technique:
Moulding adds water to batching---mixing (cone-type mixer)---.
And concrete steps are roughly as follows in new wet processing of the present invention:
Batching---mixing and water adding (kneader)---dnockout---moulding.
Key of the present invention has been to change the equipment of making, made into abrasive disk type kneader batch mixing by traditional cone-type mixer batch mixing, the moisture (depending on the technological requirement of different cultivars) that adds simultaneously 25-50%, the kneading time is 30-60 minute, takes full advantage of the aquation of binding agent, allows water and binding agent and zeolite powder interpenetrate, the tubular structure of binding agent is fully opened, closely be combined with the zeolite powder Particle Phase, then make the powder mixed material by powder beater, carry out moulding.Under the effect of forming machine, the bulky grain of an integral body of self-assembling formation (with traditional technique one deck water one deck powder, the bulky grain that is wrapped to form layer by layer has striking contrast).
In a specific embodiment of the present invention, described clay bond is kaolin.
In a specific embodiment of the present invention, in described step (c), described kneading mixture is made the powder mixed material in powder beater.
In a specific embodiment of the present invention, adopt weight to be not less than the kneading wheel of 300kg in described abrasive disk type kneader; More preferably, 350 ± 25kg.
In a specific embodiment of the present invention, adopt elastic strength to be not less than the pressure spring of ∮ 12mm spring in described abrasive disk type kneader.
In a specific embodiment of the present invention, adopt peripheral back-up ring in described abrasive disk type kneader.
In a specific embodiment of the present invention, adopt peripheral material scraping plate and bottom material rotating plate in described abrasive disk type kneader.
In above-mentioned preferred embodiment of the present invention, also existing abrasive disk type kneader equipment is improved, improve as follows:
Improved on the basis of general abrasive disk type kneader:
1. increase by two weight of mediating wheel, increase to every 350kg by original every 250kg, purpose is to promote pinches wheel to the pressure of pinching of material.
2. increase the elastic strength of pressure spring, be adjusted into ∮ 12mm spring by the spring of original ∮ 8mm, purpose is to strengthen mediating the downforce of wheel.
3. increase the peripheral back-up ring of kneader, purpose is to strengthen each inventory, and improving material is mediated dynamics.
4. increase peripheral material scraping plate and bottom material rotating plate, purpose is to help material stirring in equipment, improves kneading effect.The needs that more meet our new technology (wet method) by above improved equipment.
By the adsorbent of wet moulding, in dry run, due to the loss of moisture, this opened tubular structure can shrink again, and is mutually all linked with one another between clay particle like this, very firm with the combination of zeolite powder.By the roasting of roaster, the characteristic of at high temperature roasting of clay further improves granule strength, thereby obtains needed high-intensity molecular sieve.
The present invention and existing technique have outstanding feature and progress:
1. dry strength improves significantly
2. wet strength improves significantly
3. the wet-milling consumption improves significantly
Illustrate as nothing, various raw materials of the present invention all can obtain by commercially available; Or prepare according to the conventional method of this area.Unless otherwise defined or explanation, the meaning that all specialties used herein are familiar with scientific words and those skilled in the art is identical.Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
Other aspects of the present invention due to the disclosure of this paper, are apparent to those skilled in the art.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example usually according to normal condition, or carries out according to the condition that manufacturer advises.Unless otherwise indicated, otherwise all umbers are weight portion, and all percentages are weight percentage, and described polymer molecular weight is number-average molecular weight.
Unless otherwise defined or explanation, the meaning that all specialties used herein are familiar with scientific words and those skilled in the art is identical.Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
The method of molecular sieve strength test:
This method is used intelligent detector for strength of particles, or some contact axial through the molecular sieve sample after roasting are exerted pressure, record the Particle Breakage force value, intensity with unit are anti-crushing power average and crushing force coefficient of variation assess sample, 25 samples of concrete test are averaged and the coefficient of variation.
Below in conjunction with example relatively:
In 4A series
The particle of the trade mark 408 8*12 (dry method balling-up)
The particle of the trade mark 488 8*12 (wet method balling-up) (seeing Fig. 1-1)
In 3A series
The particle of the trade mark 308 8*12 (dry method balling-up)
The particle of the trade mark 358 8*12 (wet method balling-up) (seeing Fig. 2-1)
Performance embodiment
As depicted in figs. 1 and 2, the present invention has taken full advantage of and has brought into play the aquation of clay bond as can be known, and fully the opening of binding agent tubular structure increased the combination of itself and former powder particles, makes the intensity of molecular sieve finished particle greatly improve.
Forming method of the present invention is simple, less demanding to equipment, be easy to realize in industrial production, compare with existing moulding process and can significantly improve molecular sieve finished particle intensity, and the application of product and scope will be further expanded with the raising of properties of product.
The above is only preferred embodiment of the present invention, be not to limit essence technology contents scope of the present invention, essence technology contents of the present invention is broadly to be defined in the claim scope of application, any technology entity or method that other people complete, if defined identical with the claim scope of application, also or a kind of change of equivalence, all will be regarded as being covered by among this claim scope.
All quote in this application as a reference at all documents that the present invention mentions, just as each piece document is quoted separately as a reference.Should be understood that in addition after having read foregoing of the present invention, those skilled in the art can make various changes or modifications the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (8)
1. a method that improves molecular sieve intensity, is characterized in that, comprises the steps:
(a) provide zeolite 70-90 weight portion, clay bond 10-30 weight portion, described raw material is carried out batch mixing in the abrasive disk type kneader, obtain the batch mixing mixture;
(b) with after adding the water of 25-50 weight portion in the batch mixing mixture, continue to mediate 30-60 minute in described abrasive disk type kneader, obtain mediating mixture;
(c) described kneading mixture is made the powder mixed material;
(d) described powder mixed material carries out moulding, obtains molecular sieve.
2. the method for claim 1, is characterized in that, described clay bond is kaolin.
3. the method for claim 1, is characterized in that, adopts weight to be not less than the kneading wheel of 350kg in described abrasive disk type kneader.
4. method as claimed in claim 3, is characterized in that, adopts the kneading wheel of weight 350 ± 25kg in described abrasive disk type kneader.
5. the method for claim 1, is characterized in that, adopts elastic strength to be not less than the pressure spring of ∮ 12mm spring in described abrasive disk type kneader.
6. the method for claim 1, is characterized in that, adopts peripheral back-up ring in described abrasive disk type kneader.
7. the method for claim 1, is characterized in that, adopts peripheral material scraping plate and bottom material rotating plate in described abrasive disk type kneader.
8. the method for claim 1, is characterized in that, in described step (c), described kneading mixture is made the powder mixed material in powder beater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110442328.5A CN103170317B (en) | 2011-12-26 | 2011-12-26 | A kind of method improving intensity of molecular sieve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110442328.5A CN103170317B (en) | 2011-12-26 | 2011-12-26 | A kind of method improving intensity of molecular sieve |
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| CN103170317A true CN103170317A (en) | 2013-06-26 |
| CN103170317B CN103170317B (en) | 2015-10-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52136896A (en) * | 1976-05-12 | 1977-11-15 | Toray Ind Inc | Zeolite adsorbents |
| CN100999433A (en) * | 2006-01-11 | 2007-07-18 | 中国石油化工股份有限公司 | Method used for heavy arene light formation and alkyl transfer |
| CN101138734A (en) * | 2007-09-28 | 2008-03-12 | 东南大学 | Method for improving catalyst reacting activity in the propylene producing through propane dehydrogenation |
| CN101462069A (en) * | 2009-01-15 | 2009-06-24 | 中国石油化工股份有限公司 | Bar shaped catalyst for preparing bio-based acrylic acid and molding method thereof |
| CN101524639A (en) * | 2009-04-23 | 2009-09-09 | 中国海洋石油总公司 | Prepartion method of high-intensity absorbent |
-
2011
- 2011-12-26 CN CN201110442328.5A patent/CN103170317B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52136896A (en) * | 1976-05-12 | 1977-11-15 | Toray Ind Inc | Zeolite adsorbents |
| CN100999433A (en) * | 2006-01-11 | 2007-07-18 | 中国石油化工股份有限公司 | Method used for heavy arene light formation and alkyl transfer |
| CN101138734A (en) * | 2007-09-28 | 2008-03-12 | 东南大学 | Method for improving catalyst reacting activity in the propylene producing through propane dehydrogenation |
| CN101462069A (en) * | 2009-01-15 | 2009-06-24 | 中国石油化工股份有限公司 | Bar shaped catalyst for preparing bio-based acrylic acid and molding method thereof |
| CN101524639A (en) * | 2009-04-23 | 2009-09-09 | 中国海洋石油总公司 | Prepartion method of high-intensity absorbent |
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| CN103170317B (en) | 2015-10-21 |
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| C53 | Correction of patent of invention or patent application | ||
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Address after: 201414 No. 12 light road, Li kiln industrial town, Fengxian District, Shanghai Applicant after: SHANGHAI HENGYE CHEMICAL CO., LTD. Address before: 201414 No. 12 light road, Li kiln industrial town, Fengxian District, Shanghai Applicant before: Shanghai Hengye Chemical Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHANGHAI HENGYE CHEMICAL CO., LTD. TO: SHANGHAI HENGYE MOLECULAR SIEVE CO., LTD. |
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Address after: 12 Guangda Road, Fengxian District, Shanghai, 201414 Patentee after: Shanghai Hengye microcrystalline Material Technology Co.,Ltd. Address before: 201414 No. 12 light road, Li kiln industrial town, Fengxian District, Shanghai Patentee before: SHANGHAI HENGYE MOLECULAR SIEVE Co.,Ltd. |