CN106179632B - A kind of molecular sieve nanometer wet grinding method made as desiccant wheel - Google Patents
A kind of molecular sieve nanometer wet grinding method made as desiccant wheel Download PDFInfo
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- CN106179632B CN106179632B CN201610554112.0A CN201610554112A CN106179632B CN 106179632 B CN106179632 B CN 106179632B CN 201610554112 A CN201610554112 A CN 201610554112A CN 106179632 B CN106179632 B CN 106179632B
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- grinding
- molecular sieve
- desiccant wheel
- ludox
- wet grinding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
Abstract
The invention discloses a kind of molecular sieve nanometer wet grinding method made as desiccant wheel, selects hydrophily synthetic zeolite to be used as grinding-material after being processed to as molecular sieve powder；Ludox is placed in water and is diffuseed to form after colloidal solution as grinding liquid-phase system；Grinding-material is added in grinding liquid-phase system, the mass fraction of grinding-material is 15%~45%；Selective oxidation zirconium pearl ball is added in grinding liquid-phase system as abrasive media and is ground, and grinding rotating speed is 1500rpm~3000rpm, and milling time is 30min~60min, and drop temperature is 15 DEG C~25 DEG C；Slurry finished product is made in the material of acquisition.Of the invention to be used to make ultra-low dew point desiccant wheel, control molecular sieve powder particle diameter is in sub-micron rank, mass-transfer efficiency raising when realizing even particulate dispersion when technique manufactures and applying.
Description
Technical field
The present invention relates to desiccant wheel production field, more particularly to a kind of molecular sieve nanometer as desiccant wheel making are wet
Method Ginding process.
Background technology
Desiccant wheel is a core component of dehumidifier, it is combined by special ceramics fiber carrier and adsorbent；
Runner both sides are divided into two regions by special sealing device：Processing region and regeneration zone；When the humid air that needs dehumidify
During by the processing region of runner, the water vapour of humid air is adsorbed by the adsorbent of runner, and the dry air wind turbine that is processed is sent
To space to be treated；And the constantly runner that slowly rotates carries and tends to the water vapour of saturation and enter regeneration zone；Renewing zone
The moisture content that the high temperature air being inside reversely blown into adsorb in runner is desorbed, and outdoor is discharged by wind turbine, so that runner recovers
The ability of moisture absorption and complete regenerative process, runner constantly rotates, and above-mentioned dehumidifying and regeneration again and again carry out so that
Ensure the continual and steady dehumidified state of runner.
Ultra-low dew point dehumidifier, refers to the equipment that can provide low-down dew-point temperature (less than -60 DEG C) air.Dew point temperature
Degree, refers to and is keeping reducing unsaturated humid air temperature in the case that humid air water capacity is constant, be down to relative humidity and reach
Corresponding air dry-bulb temperature is known as the dew-point temperature of the nonsaturated air when 100%.The dew-point temperature of air is solely dependent upon
The water capacity of air, when water capacity is constant, dew-point temperature is definite value.At present, ultra-low dew point temperature dehumidifier changes also in research and development
Into the stage.
For the special ultra-low dew point desiccant wheel of ultra-low dew point dehumidifier, it is necessary to which the material of grinding is to remove humid medium, and
The shortcomings of adsorbents such as common activated carbon, aluminium oxide and silica gel are due to regeneration temperature limitation and poor low moisture environments absorption property,
Be not suitable for being used for making low dew point desiccant wheel.Found after multiple material is contrasted, synthetic zeolite-molecular sieve is flourishing due to it
One pore passage structure, still has preferable absorption property in low humidity high temperature, is the ideal material for preparing low dew point desiccant wheel.Exploitation
The molecular sieve nanometer wet grinding technology made as ultra-low dew point desiccant wheel, has broad application prospects.
The content of the invention
Goal of the invention：The object of the present invention is to provide a kind of molecular sieve nanometer wet grinding side made as desiccant wheel
Method, for making ultra-low dew point desiccant wheel, control molecular sieve powder particle diameter is in sub-micron rank, particle when realizing technique manufacture
Mass-transfer efficiency improves during dispersed and application.
Technical solution：A kind of molecular sieve nanometer wet grinding method made as desiccant wheel of the present invention, its
It is characterized in that：Comprise the following steps：
(1) select hydrophily synthetic zeolite be used as molecular sieve powder, by molecular sieve powder be placed in relative humidity be 95% with
On environment in processing 8h~12h after as grinding-material it is stand-by；
(2) the soda acid property of molecular sieve system is directed to, selects corresponding alkalescence or neutral Ludox to be placed in water divergent contour
It is stand-by as grinding liquid-phase system after into colloidal solution；Wherein, Ludox micelle is with small particle 4nm~8nm and conventional particle size
Based on 10nm~15nm, the mass fraction for controlling Ludox is 20%~40%；
(3) grinding-material that step (1) obtains is added in the grinding liquid-phase system of step (2) configuration, control grinding
The mass fraction of material is 15%~45%；
(4) the zirconium oxide bead ball of a diameter of 0.1mm~0.3mm is selected to be added to the grinding of step (3) as abrasive media
It is ground in liquid-phase system；It is 1500rpm~3000rpm to control grinding rotating speed, and milling time is 30min~60min, discharging
Temperature is 15 DEG C~25 DEG C；
(5) defoamer, dispersant and coalescents are added in the material obtained to step (4) and slurry finished product is made.
Wherein, synthetic zeolite is technical grade synthetic zeolite in the step (1), is A types, X-type or y-type zeolite.
Wherein, the particle diameter for the Ludox micelle selected in the step (2) is 10nm~12nm；The quality of Ludox point
Number is 20%~30%.
Wherein, the mass fraction of grinding-material is 20%~30% in the step (3).
Wherein, a diameter of 0.2mm~0.3mm for the zirconium oxide bead ball selected in the step (4)；Grinding rotating speed is
2000rpm~2500rpm；Milling time is 30min~40min.
Beneficial effect：Compared with prior art, the present invention has following remarkable advantage：The present invention be directed to ultra-low dew point to remove
Wet runner makes the molecular sieve nanometer wet grinding method specially designed, and control molecular sieve powder particle diameter is in the effective meter level of sub-micro
Not, for manufacturing ultra-low dew point dehumidifier, promote the development of ultra-low dew point dehumidifier, have broad application prospects.Meanwhile profit
Make grinding liquid-phase system with Ludox, make even particulate dispersion, and using its good permeability, caking property, film forming, point
Dissipate the dispersant and adhesive of property and adsorptivity as molecular sieve powder.Moreover, by controlling molecular sieve powder and Ludox to consolidate
Liquid proportional, improves mass-transfer efficiency.
Embodiment
Embodiment 1：
Selecting technical grade A types synthetic zeolite, it is 95% that molecular sieve powder is placed in relative humidity as molecular sieve powder
It is stand-by as grinding-material after processing 8h in environment；Select the alkaline silica sol of a diameter of 4nm to be placed in water and diffuse to form colloid
Stand-by as grinding liquid-phase system after solution, the mass fraction of Ludox is 20%；Grinding-material is added to grinding liquid phase body
In system, the mass fraction of grinding-material is 15%；Select the zirconium oxide bead ball of a diameter of 0.1mm to be added to as abrasive media to grind
It is ground in grinding fluid phase system, grinding rotating speed is 1500rpm, and milling time 60min, drop temperature is 20 DEG C；To acquisition
Material in add defoamer, dispersant and coalescents and slurry finished product be made.
Embodiment 2：
Selecting technical grade X-type synthetic zeolite, it is 97% that molecular sieve powder is placed in relative humidity as molecular sieve powder
It is stand-by as grinding-material after processing 9h in environment；Select the alkaline silica sol of a diameter of 10nm to be placed in water and diffuse to form colloid
Stand-by as grinding liquid-phase system after solution, the mass fraction of Ludox is 30%；Grinding-material is added to grinding liquid phase body
In system, the mass fraction of grinding-material is 25%；Select the zirconium oxide bead ball of a diameter of 0.2mm to be added to as abrasive media to grind
It is ground in grinding fluid phase system, grinding rotating speed is 2000rpm, and milling time 45min, drop temperature is 18 DEG C；To acquisition
Material in add defoamer, dispersant and coalescents and slurry finished product be made.
Embodiment 3：
Selecting technical grade 3A types synthetic zeolite, it is 98% that molecular sieve powder is placed in relative humidity as molecular sieve powder
It is stand-by as grinding-material after processing 10h in environment；Select the neutral Ludox of a diameter of 5nm to be placed in water and diffuse to form colloid
Stand-by as grinding liquid-phase system after solution, the mass fraction of Ludox is 35%；Grinding-material is added to grinding liquid phase body
In system, the mass fraction of grinding-material is 35%；The zirconium oxide bead ball of a diameter of 0.19mm is selected to be added to as abrasive media
It is ground in grinding liquid-phase system, grinding rotating speed is 2500rpm, and milling time 50min, drop temperature is 22 DEG C；To obtaining
Defoamer, dispersant and coalescents are added in the material obtained and slurry finished product is made.
Embodiment 4：
Select technical grade 13X types synthetic zeolite that molecular sieve powder is placed in relative humidity for 95% as molecular sieve powder
Environment in processing 11h after as grinding-material it is stand-by；Select the neutral Ludox of a diameter of 12nm to be placed in water to diffuse to form
Stand-by as grinding liquid-phase system after colloidal solution, the mass fraction of Ludox is 25%；Grinding-material is added to lapping liquid
In phase system, the mass fraction of grinding-material is 27%；The zirconium oxide bead ball of a diameter of 0.22mm is selected to add as abrasive media
Enter into grinding liquid-phase system and be ground, grinding rotating speed is 2800rpm, and milling time 45min, drop temperature is 18 DEG C；
Defoamer, dispersant and coalescents are added into the material of acquisition and slurry finished product is made.
Embodiment 5：
Selecting technical grade Y types synthetic zeolite, it is 97% that molecular sieve powder is placed in relative humidity as molecular sieve powder
It is stand-by as grinding-material after processing 10h in environment；The neutral Ludox of a diameter of 10nm is selected to be placed in water divergent contour plastic
Stand-by as grinding liquid-phase system after liquid solution, the mass fraction of Ludox is 22%；Grinding-material is added to grinding liquid phase
In system, the mass fraction of grinding-material is 23%；The zirconium oxide bead ball of a diameter of 0.15mm is selected to be added as abrasive media
It is ground into grinding liquid-phase system, grinding rotating speed is 2300rpm, and milling time 47min, drop temperature is 19 DEG C；To
Defoamer, dispersant and coalescents are added in the material of acquisition and slurry finished product is made.
Ludox used in the present invention is the glue that the silicon dioxide colloid particulate of 10nm~20nm uniformly diffuses to form in water
Liquid solution, there is sizable specific surface area, has fairly good permeability, and the permeable place of water can be permeated when it, have
Certain viscosity.During Ludox moisture evaporation, colloidal particle is securely attached to body surface, and forming silica between particle combines,
With certain caking property, can not only be formed with specific surface area is big and the gel of uniform pore, but also can dispersed powder.The present invention
Dispersant and bonding i.e. by the use of its good permeability, caking property, film forming, dispersiveness and adsorptivity as molecular sieve powder
Agent.
Molecular sieve powder and Ludox solid-liquid ratio are extremely important during present invention grinding.Ludox content is low, and viscosity is small, glues
Attached force difference, the molecular sieve amount being adhered on base material is few, influences absorption property；Ludox content is high, system viscosity increase, molecular sieve
Disperse in Ludox uneven.In addition, as grinding carries out, system viscosity can gradually increase, and excessive Ludox is easy to cause
Pulp gel.Molecular sieve content is low, and the quantity of sorbent for causing to be adhered on base material is few, and adsorption efficiency is low；And molecular sieve content is high,
Stronger bonding force is needed, and makes substrate deformation, dry linting phenomenon also easily occurs.And excessive molecular sieve is deposited on base material not
It is easily scattered, mass-transfer efficiency can be caused to reduce.So molecular sieve quality fraction about 15%~45%, is advisable with 20%~30%.
Liquid-phase system used in the present invention is Ludox, sensitive to surrounding environment, during grinding material in machine cavity with grinding
Grinding media high velocity impact, high-speed circulating, produces substantial amounts of heat, necessarily causes the lifting suddenly of Ludox temperature, or even can cause
Material gel, this is very unfavorable to subsequent operation.As grinding carries out, material is tapered, and viscosity can increase therewith, heat
The accumulation of amount easily causes material gel plus the lifting of system viscosity, or even blocks machine, it more difficult in progress subsequent operation.Institute
With the present invention uses air-cooled water cooling machine persistently to provide cooling circulating water for sand mill process of lapping.Ensure material drop temperature
Between 15 DEG C~25 DEG C, assist process of lapping to produce heat and scatter and disappear in time, prevent material gelation.
Claims (7)
- A kind of 1. molecular sieve nanometer wet grinding method made as desiccant wheel, it is characterised in that：Comprise the following steps：(1) select hydrophily synthetic zeolite that molecular sieve powder is placed in relative humidity for more than 95% as molecular sieve powder It is stand-by as grinding-material after processing 8h~12h in environment；(2) the soda acid property of molecular sieve system is directed to, selects corresponding alkalescence or neutral Ludox to be placed in water divergent contour plastic It is stand-by as grinding liquid-phase system after liquid solution；Wherein, Ludox micelle with small particle 4nm~8nm and conventional particle size 10nm~ Based on 15nm, the mass fraction for controlling Ludox is 20%~40%；(3) grinding-material that step (1) obtains is added in the grinding liquid-phase system of step (2) configuration, controls grinding-material Mass fraction be 15%~45%；(4) the zirconium oxide bead ball of a diameter of 0.1mm~0.3mm is selected to be added to the grinding liquid phase of step (3) as abrasive media It is ground in system；It is 1500rpm~3000rpm to control grinding rotating speed, and milling time is 30min~60min, drop temperature For 15 DEG C~25 DEG C；(5) defoamer, dispersant and coalescents are added in the material obtained to step (4) and slurry finished product is made.
- 2. the molecular sieve nanometer wet grinding method according to claim 1 made as desiccant wheel, it is characterised in that： Synthetic zeolite is technical grade synthetic zeolite in the step (1), is A types, X-type or y-type zeolite.
- 3. the molecular sieve nanometer wet grinding method according to claim 1 made as desiccant wheel, it is characterised in that： The particle diameter for the Ludox micelle selected in the step (2) is 10nm~12nm；The mass fraction of Ludox for 20%~ 30%.
- 4. the molecular sieve nanometer wet grinding method according to claim 1 made as desiccant wheel, it is characterised in that： The mass fraction of grinding-material is 20%~30% in the step (3).
- 5. the molecular sieve nanometer wet grinding method according to claim 1 made as desiccant wheel, it is characterised in that： A diameter of 0.2mm~the 0.3mm for the zirconium oxide bead ball selected in the step (4)；Process of lapping carries out in sand mill.
- 6. the molecular sieve nanometer wet grinding method according to claim 1 made as desiccant wheel, it is characterised in that： The grinding rotating speed of the step (4) is 2000rpm~2500rpm；Milling time is 30min~40min.
- 7. the molecular sieve nanometer wet grinding method according to claim 5 made as desiccant wheel, it is characterised in that： The sand mill persistently provides cooling circulating water by air-cooled water cooling machine and cools down, assist process of lapping produce heat and When scatter and disappear, prevent material gelation.
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| CN107552164A (en) * | 2017-09-04 | 2018-01-09 | 无锡普爱德环保科技有限公司 | A kind of molecular sieve nano-milling process |
| CN107597301A (en) * | 2017-09-08 | 2018-01-19 | 芜湖悠派护理用品科技股份有限公司 | A kind of zeolite grinds preprocess method |
| CN111495517A (en) * | 2020-04-22 | 2020-08-07 | 龙佰四川钛业有限公司 | Hydrolysis scale depolymerization method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920190A (en) * | 2010-06-12 | 2010-12-22 | 华中农业大学 | Zeolite modifying method and application thereof in removing arsenic in water |
| CN102009986A (en) * | 2010-09-29 | 2011-04-13 | 中国科学院广州能源研究所 | Method for co-production of zeolite molecular sieves, high-grade activated carbon and industrial alkali metal salt from wastes in biomass power plants |
| CN102631945A (en) * | 2011-10-24 | 2012-08-15 | 常云峰 | Preparing method of wearing-resistant catalyst |
| CN102936017A (en) * | 2012-10-31 | 2013-02-20 | 太原理工大学 | Mesoporous nano zeolite aggregate and preparation method thereof |
| CN103055921A (en) * | 2011-10-18 | 2013-04-24 | 中国石油化工股份有限公司 | Catalyst with neat structure for propylene production from steam cracking |
| EP2826553A1 (en) * | 2001-01-05 | 2015-01-21 | Air Products And Chemicals, Inc. | Method of manufacture for adsorbent coating compositions, laminates and adsorber elements comprising such compositions |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040248727A1 (en) * | 2003-06-09 | 2004-12-09 | Marc Straub | Molecular sieve with enhanced performance in air separation |
-
2016
- 2016-07-14 CN CN201610554112.0A patent/CN106179632B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2826553A1 (en) * | 2001-01-05 | 2015-01-21 | Air Products And Chemicals, Inc. | Method of manufacture for adsorbent coating compositions, laminates and adsorber elements comprising such compositions |
| CN101920190A (en) * | 2010-06-12 | 2010-12-22 | 华中农业大学 | Zeolite modifying method and application thereof in removing arsenic in water |
| CN102009986A (en) * | 2010-09-29 | 2011-04-13 | 中国科学院广州能源研究所 | Method for co-production of zeolite molecular sieves, high-grade activated carbon and industrial alkali metal salt from wastes in biomass power plants |
| CN103055921A (en) * | 2011-10-18 | 2013-04-24 | 中国石油化工股份有限公司 | Catalyst with neat structure for propylene production from steam cracking |
| CN102631945A (en) * | 2011-10-24 | 2012-08-15 | 常云峰 | Preparing method of wearing-resistant catalyst |
| CN102936017A (en) * | 2012-10-31 | 2013-02-20 | 太原理工大学 | Mesoporous nano zeolite aggregate and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 硅溶胶合成小晶粒ZSM-5分子筛的研究;张伟等;《石油化工应用》;20131031;第32卷(第10期);第88-92页 * |
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