CN104923043B - Organic quicklime composite desiccant and preparation method thereof - Google Patents
Organic quicklime composite desiccant and preparation method thereof Download PDFInfo
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- CN104923043B CN104923043B CN201510255175.1A CN201510255175A CN104923043B CN 104923043 B CN104923043 B CN 104923043B CN 201510255175 A CN201510255175 A CN 201510255175A CN 104923043 B CN104923043 B CN 104923043B
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- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims abstract description 258
- 239000000292 calcium oxide Substances 0.000 title claims abstract description 130
- 235000012255 calcium oxide Nutrition 0.000 title claims abstract description 130
- 239000002274 desiccant Substances 0.000 title claims abstract description 64
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 68
- 238000003756 stirring Methods 0.000 claims abstract description 45
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 21
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 claims description 26
- 230000004044 response Effects 0.000 claims description 13
- 229920003171 Poly (ethylene oxide) Polymers 0.000 abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000010521 absorption reaction Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 239000011162 core material Substances 0.000 abstract description 7
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000004931 aggregating effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000011258 core-shell material Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011257 shell material Substances 0.000 abstract 1
- -1 poly(ethylene oxide) Polymers 0.000 description 54
- 239000004531 microgranule Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 8
- 238000005054 agglomeration Methods 0.000 description 6
- 230000002776 aggregation Effects 0.000 description 6
- 239000011859 microparticle Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 238000011031 large-scale manufacturing process Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002171 ethylene diamines Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 238000006701 autoxidation reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007210 heterogeneous catalysis Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Drying Of Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to the field of desiccant preparation, and discloses an organic quicklime composite desiccant. The desiccant is granular, and formed by aggregating particles with core-shell structures; the core material of the particles is quicklime, and the shell material of the particles is polyethylene oxide polymerized on the surface of the quicklime particle; and the particle size of the desiccant is 2-5mm. The preparation method of the organic quicklime composite desiccant includes A) adding quicklime powder into a high temperature and high pressure reaction kettle, and stirring; B) adding ethylene glycol and ethylenediamine into the high temperature and high pressure reaction kettle, uniformly stirring with the quicklime powder, and reacting; and C) taking out the product and cooling to obtain the organic quicklime composite desiccant. The organic quicklime composite desiccant is good in moisture absorption effect, mild in reaction after absorbing water, and good in safety. The inventive preparation method is good in parameter homogeneity, simple in process and low in cost, and is suitable for mass production.
Description
Technical field
The present invention relates to desiccant preparation field, particularly relate to a kind of organic quick lime composite drying agent and preparation method thereof.
Background technology
Quick lime, is mainly composed of calcium oxide, chemical formula CaO, is common inorganic compound；Generally it is heated to 500 600 DEG C by the material containing calcium carbonate, makes it resolve into calcium oxide and carbon dioxide.Profile is white, unformed.It is widely used in desiccant.For the dehydration etc. of iron and steel, pesticide, medicine, desiccant, process hides and alcohol, typically all containing the Calx that overdoes in quick lime, the lime slaking that overdoes is slow, if there is ripening after Calx slurry hardens again, can cause protuberance and cracking because of the expansion of ripening generation.Quick lime and water can occur chemical reaction, will be heated to surmount the high temperature of 300 DEG C at once.
Owing to calcium oxide and water have high reactivity (hydration reaction), generate calcium hydroxide, there is fabulous water sorption, a kind of fabulous desiccant raw material.But the hydration reaction of calcium oxide can drastically heat release, the high response of hydration reaction and uncontrollable heat produce, breaking out of fire when often setting off an explosion and preserve.
The poly(ethylene oxide) of super high molecular weight, also known as polyoxyethylene, has more hydroxyl, good water solubility, has preferable hygroscopicity, can carry out esterification, is also easy to electron accepting groups and associates or autoxidation.Poly(ethylene oxide) can have heterogeneous catalysis to be polymerized, and catalyst is the hydrate etc. of carbonate, alkaline earth oxide, zinc alkyl, iron halide.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of organic quick lime composite drying agent and preparation method thereof, desiccant prepared by the present invention, on the premise of the moisture pick-up properties not affecting quick lime, reacts the most violent shortcoming when overcoming quick lime absorbent drying.In the preparation of this desiccant, using quick lime as catalyst, quick lime surface aggregate has the polyethylene oxide molecules of hydrophilic super high molecular weight.The present invention uses quick lime as main component, low cost, and preparation method is simple, is suitable for large-scale production.
The concrete technical scheme of the present invention is: a kind of organic quick lime composite drying agent, it is in granular form, described desiccant is to be formed by the particle agglomeration with nucleocapsid structure, and the nuclear core material of described microgranule is quick lime, and the sheathing material of microgranule is the poly(ethylene oxide) being aggregated in described quick lime microparticle surfaces；The particle diameter of described desiccant is between 2-5mm.
In organic quick lime composite drying agent of the present invention, the surface aggregate of quick lime powder has a strata oxirane shell, forms a kind of microgranule with nucleocapsid structure, and due to the viscosity of poly(ethylene oxide), a large amount of microgranules are agglomerated into again the granule that particle diameter is 2-5mm.
This structure is advantageous in that: poly(ethylene oxide) self just has preferable water absorption, after poly(ethylene oxide) is coated on quick lime surface, moisture in air can not directly be absorbed by quick lime, need first to be absorbed by poly(ethylene oxide), pass to the quick lime of inside the most again, owing to moisture is slowly to pass to quick lime, therefore slow down the response speed of quick lime and water, avoid and produce substantial amounts of heat due to quick lime moment and a large amount of water generation vigorous reactions, impact to external world is less, and safety is good.
Simultaneously again due to the poly(ethylene oxide) compound with regular structure of super high molecular weight, degree of crystallinity is high, the tensile strength of poly(ethylene oxide) is close to medium density polyethylene, after being coated on quick lime surface, in terms of preventing quick lime vigorous reaction generation blast, also there is reasonable protective action, further increase safety.
Additionally, relative to single quick lime absorbent material, owing to desiccant of the present invention is to be composited with poly(ethylene oxide) by quick lime, water absorbing properties have also been obtained certain raising.
As preferably, the relative molecular weight of described poly(ethylene oxide) is between 500000-2000000.
The preparation method of a kind of organic quick lime composite drying agent, comprises the steps:
A), quick lime powder is added in high-temperature high-pressure reaction kettle and stir.
B), ethylene glycol or ethylenediamine are added in high-temperature high-pressure reaction kettle and stir with quick lime powder and react；Described quick lime powder is 100:(3-10 with the quality amount ratio of ethylene glycol or ethylenediamine)；Air pressure in described high-temperature high-pressure reaction kettle is 1.1-2.0 atmospheric pressure, temperature is 110-150 DEG C, response time is 2-6h, wherein course of reaction is divided into three phases, and between the first stage is for reaction 0-0.5h, stir speed (S.S.) is 500-750r/min, second stage is 0.5-1.5 hour, stir speed (S.S.) is 200-500r/min, and the phase III is the residue response time, and stir speed (S.S.) is 20-200r/min.
C), after completion of the reaction, the product of gained is taken out and cools down, i.e. prepare described organic quick lime composite drying agent.
In the methods of the invention, using quick lime as catalyst, it is again the carrier of reaction simultaneously, under the catalytic action of quick lime, ethylene glycol or ethylenediamine generate positive and negative ion, are adsorbed in the surface of quick lime microgranule, and carry out polymerization generation poly(ethylene oxide), the poly(ethylene oxide) being combined on different quick lime microgranule is reunited mutually, makes a large amount of quick lime microgranule also agglomerate into graininess.The each reaction condition of strict control in course of reaction, particularly to stir speed (S.S.) control by stages, is conducive to homogeneity and the homogeneity of end product particle diameter of the molecular weight of the poly(ethylene oxide) of generation.The poly(ethylene oxide) compound with regular structure prepared by the inventive method, degree of crystallinity is high, and tensile strength is high, and good water absorption is preferable with the adhesion of quick lime.
The present invention selects the quick lime main component the most that source is wide, low cost；The process of the inventive method is simple, is suitable for large-scale production.
As preferably, in described step (B), in second stage, adding butyl lithium in described high-temperature high-pressure reaction kettle, described quick lime powder is 100:(1-3 with the quality amount ratio of butyl lithium).The Fast back-projection algorithm of the addition of butyl lithium, beneficially poly(ethylene oxide).
As preferably, described quick lime powder is 100:2 with the quality amount ratio of butyl lithium.
As preferably, described quick lime powder crosses 80-200 mesh sieve.
As preferably, the air pressure in described high-temperature high-pressure reaction kettle is 1.2 atmospheric pressure, and temperature is 120 DEG C, and the response time is 3h.
As preferably, described quicklime particles is 100:5 with the quality amount ratio of ethylene glycol or ethylenediamine.
As preferably, in three stages of reaction of described step (B), the stir speed (S.S.) of the respective stage of reaction the most at the uniform velocity reduces.
Being compared with the prior art, the invention has the beneficial effects as follows: organic quick lime composite drying agent moisture sorption effect of the present invention is good, after water suction, reaction relaxes, and safety is good.Desiccant each parameter homogeneity prepared by the inventive method is good, and process is simple, low cost, is suitable for large-scale production.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
The preparation method of a kind of organic quick lime composite drying agent, comprises the steps:
A) the quick lime powder, taking 100 parts of mistake 150 mesh sieves adds stirring in high-temperature high-pressure reaction kettle to.
B), take 5 parts of ethylene glycol to add in high-temperature high-pressure reaction kettle and stir with quick lime powder and react.
Air pressure in described high-temperature high-pressure reaction kettle is 1.2 atmospheric pressure, and temperature is 120 DEG C, and the response time is 3h.Wherein course of reaction is divided into three phases, and between the first stage is for reaction 0-0.5h, stir speed (S.S.) is 500-750r/min, and second stage is 0.5-1.5 hour, and stir speed (S.S.) is 200-500r/min, and the phase III is 1.5-3h, and stir speed (S.S.) is 20-200r/min；And the stir speed (S.S.) of respective stage of reaction the most at the uniform velocity reduces.
C), after completion of the reaction, the product of gained is taken out and cools down, i.e. prepare described organic quick lime composite drying agent.
Organic quick lime composite drying agent of above-mentioned preparation is in granular form, and described desiccant is to be formed by the particle agglomeration with nucleocapsid structure, and the nuclear core material of described microgranule is quick lime, and the sheathing material of microgranule is the poly(ethylene oxide) being aggregated in described quick lime microparticle surfaces.The particle diameter of described desiccant is at about 3mm, and the relative molecular weight of described poly(ethylene oxide) is at about 800000-1200000.
Organic quick lime composite drying agent hygroscopic capacity prepared by the present embodiment is about 34%, slightly increases compared with quick lime hygroscopic capacity about 30%, and basicity reduces by 28% than quick lime, and moisture absorption heat release relaxes, and specific water absorption thermal discharge is lower by about 27% than quick lime.
Embodiment 2
The preparation method of a kind of organic quick lime composite drying agent, comprises the steps:
A) the quick lime powder, taking 100 parts of mistake 80 mesh sieves adds stirring in high-temperature high-pressure reaction kettle to.
B), take 10 parts of ethylenediamines to add in high-temperature high-pressure reaction kettle and stir with quick lime powder and react.
Air pressure in described high-temperature high-pressure reaction kettle is 2.0 atmospheric pressure, temperature is 150 DEG C, response time is 2h, wherein course of reaction is divided into three phases, and between the first stage is for reaction 0-0.5h, stir speed (S.S.) is 500-750r/min, second stage is 0.5-1.5 hour, stir speed (S.S.) is 200-500r/min, and the phase III is 1.5-2h, and stir speed (S.S.) is 20-200r/min；And the stir speed (S.S.) of respective stage of reaction the most at the uniform velocity reduces.
C), after completion of the reaction, the product of gained is taken out and cools down, i.e. prepare described organic quick lime composite drying agent.
Organic quick lime composite drying agent of above-mentioned preparation is in granular form, and described desiccant is to be formed by the particle agglomeration with nucleocapsid structure, and the nuclear core material of described microgranule is quick lime, and the sheathing material of microgranule is the poly(ethylene oxide) being aggregated in described quick lime microparticle surfaces.The particle diameter of described desiccant is at about 5mm, and the relative molecular weight of described poly(ethylene oxide) is at about 500000-900000.
Organic quick lime composite drying agent hygroscopic capacity prepared by the present embodiment is about 32%, slightly increases compared with quick lime hygroscopic capacity about 30%, and basicity reduces by 22% than quick lime, and moisture absorption heat release relaxes, and specific water absorption thermal discharge is lower by about 23% than quick lime.
Embodiment 3
The preparation method of a kind of organic quick lime composite drying agent, comprises the steps:
A) the quick lime powder, taking 100 parts of mistake 80 mesh sieves adds stirring in high-temperature high-pressure reaction kettle to.
B), take 3 parts of ethylene glycol to add in high-temperature high-pressure reaction kettle and stir with quick lime powder and react.
Air pressure in described high-temperature high-pressure reaction kettle is 1.1 atmospheric pressure, temperature is 110 DEG C, response time is 6h, wherein course of reaction is divided into three phases, and between the first stage is for reaction 0-0.5h, stir speed (S.S.) is 500-750r/min, second stage is 0.5-1.5 hour, stir speed (S.S.) is 200-500r/min, and the phase III is 1.5-6h, and stir speed (S.S.) is 20-200r/min；And the stir speed (S.S.) of respective stage of reaction the most at the uniform velocity reduces.
In second stage, adding butyl lithium in described high-temperature high-pressure reaction kettle, described quick lime powder is 100:2 with the quality amount ratio of butyl lithium.
C), after completion of the reaction, the product of gained is taken out and cools down, i.e. prepare described organic quick lime composite drying agent.
Organic quick lime composite drying agent of above-mentioned preparation is in granular form, and described desiccant is to be formed by the particle agglomeration with nucleocapsid structure, and the nuclear core material of described microgranule is quick lime, and the sheathing material of microgranule is the poly(ethylene oxide) being aggregated in described quick lime microparticle surfaces.The particle diameter of described desiccant is at about 2mm, and the relative molecular weight of described poly(ethylene oxide) is at about 1000000-1500000.
Organic quick lime composite drying agent hygroscopic capacity prepared by the present embodiment is about 35%, slightly increases compared with quick lime hygroscopic capacity about 30%, and basicity reduces by 30% than quick lime, and moisture absorption heat release relaxes, and specific water absorption thermal discharge is lower by about 30% than quick lime.
Embodiment 4
The preparation method of a kind of organic quick lime composite drying agent, comprises the steps:
A) the quick lime powder, taking 100 parts of mistake 150 mesh sieves adds stirring in high-temperature high-pressure reaction kettle to.
B), take 5 parts of ethylenediamines to add in high-temperature high-pressure reaction kettle and stir with quick lime powder and react.
Air pressure in described high-temperature high-pressure reaction kettle is 1.5 atmospheric pressure, temperature is 130 DEG C, response time is 4h, wherein course of reaction is divided into three phases, and between the first stage is for reaction 0-0.5h, stir speed (S.S.) is 500-750r/min, second stage is 0.5-1.5 hour, stir speed (S.S.) is 200-500r/min, and the phase III is 1.5-4h, and stir speed (S.S.) is 20-200r/min；And the stir speed (S.S.) of respective stage of reaction the most at the uniform velocity reduces.
In second stage, adding butyl lithium in high-temperature high-pressure reaction kettle, described quick lime powder is 100:3 with the quality amount ratio of butyl lithium.
C), after completion of the reaction, the product of gained is taken out and cools down, i.e. prepare described organic quick lime composite drying agent.
Organic quick lime composite drying agent of above-mentioned preparation is in granular form, and described desiccant is to be formed by the particle agglomeration with nucleocapsid structure, and the nuclear core material of described microgranule is quick lime, and the sheathing material of microgranule is the poly(ethylene oxide) being aggregated in described quick lime microparticle surfaces.The particle diameter of described desiccant is at about 3mm, and the relative molecular weight of described poly(ethylene oxide) is at about 800000-1300000.
Organic quick lime composite drying agent hygroscopic capacity prepared by the present embodiment is about 33%, slightly increases compared with quick lime hygroscopic capacity about 30%, and basicity reduces by 28% than quick lime, and moisture absorption heat release relaxes, and specific water absorption thermal discharge is lower by about 29% than quick lime.
Embodiment 5
The preparation method of a kind of organic quick lime composite drying agent, comprises the steps:
A) the quick lime powder, taking 100 parts of mistake 80 mesh sieves adds stirring in high-temperature high-pressure reaction kettle to.
B), take 8 parts of ethylene glycol to add in high-temperature high-pressure reaction kettle and stir with quick lime powder and react.
Air pressure in described high-temperature high-pressure reaction kettle is 1.4 atmospheric pressure, temperature is 140 DEG C, response time is 6h, wherein course of reaction is divided into three phases, and between the first stage is for reaction 0-0.5h, stir speed (S.S.) is 500-750r/min, second stage is 0.5-1.5 hour, stir speed (S.S.) is 200-500r/min, and the phase III is 1.5-6h, and stir speed (S.S.) is 20-200r/min；And the stir speed (S.S.) of respective stage of reaction the most at the uniform velocity reduces.
In second stage, adding butyl lithium in high-temperature high-pressure reaction kettle, described quick lime powder is 100:1 with the quality amount ratio of butyl lithium.
C), after completion of the reaction, the product of gained is taken out and cools down, i.e. prepare described organic quick lime composite drying agent.
Organic quick lime composite drying agent of above-mentioned preparation is in granular form, and described desiccant is to be formed by the particle agglomeration with nucleocapsid structure, and the nuclear core material of described microgranule is quick lime, and the sheathing material of microgranule is the poly(ethylene oxide) being aggregated in described quick lime microparticle surfaces.The particle diameter of described desiccant is at about 2mm, and the relative molecular weight of described poly(ethylene oxide) is at about 1200000-2000000.
Organic quick lime composite drying agent hygroscopic capacity prepared by the present embodiment is about 33%, slightly increases compared with quick lime hygroscopic capacity about 30%, and basicity reduces by 27% than quick lime, and moisture absorption heat release relaxes, and specific water absorption thermal discharge is lower by about 26% than quick lime.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention, every any simple modification, change and equivalent transformation made above example according to the technology of the present invention essence, all still falls within the protection domain of technical solution of the present invention.
Claims (7)
1. the preparation method of an organic quick lime composite drying agent, it is characterised in that comprise the steps:
A), quick lime powder is added in high-temperature high-pressure reaction kettle and stir；
B), ethylene glycol is added in high-temperature high-pressure reaction kettle and stir with quick lime powder and react；Described quick lime powder is 100:(3-10 with the quality amount ratio of ethylene glycol)；Air pressure in described high-temperature high-pressure reaction kettle is 1.1-2.0 atmospheric pressure, temperature is 110-150 DEG C, response time is 2-6h, wherein course of reaction is divided into three phases, and between the first stage is for reaction 0-0.5h, stir speed (S.S.) is 500-750r/min, second stage is 0.5-1.5 hour, stir speed (S.S.) is 200-500r/min, and the phase III is the residue response time, and stir speed (S.S.) is 20-200r/min；
C), after completion of the reaction, the product of gained is taken out and cools down, i.e. prepare described organic quick lime composite drying agent.
The preparation method of organic quick lime composite drying agent the most as claimed in claim 1, it is characterized in that, in described step (B), in second stage, adding butyl lithium in described high-temperature high-pressure reaction kettle, described quick lime powder is 100:(1-3 with the quality amount ratio of butyl lithium).
The preparation method of organic quick lime composite drying agent the most as claimed in claim 2, it is characterised in that described quick lime powder is 100:2 with the quality amount ratio of butyl lithium.
The preparation method of organic quick lime composite drying agent the most as claimed in claim 1, it is characterised in that described quick lime powder crosses 80-200 mesh sieve.
The preparation method of organic quick lime composite drying agent the most as claimed in claim 1, it is characterised in that the air pressure in described high-temperature high-pressure reaction kettle is 1.2 atmospheric pressure, temperature is 120 DEG C, and the response time is 3h.
The preparation method of organic quick lime composite drying agent the most as claimed in claim 1, it is characterised in that described quicklime particles is 100:5 with the quality amount ratio of ethylene glycol.
The preparation method of organic quick lime composite drying agent the most as claimed in claim 1, it is characterised in that in three stages of reaction of described step (B), the stir speed (S.S.) of the respective stage of reaction the most at the uniform velocity reduces.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141916A (en) * | 1984-12-13 | 1986-06-28 | Shin Nisso Kako Co Ltd | Desiccant composition and molded article |
| JPS61200835A (en) * | 1985-03-04 | 1986-09-05 | Sumitomo Chem Co Ltd | Desiccant |
| JPS61216715A (en) * | 1985-03-19 | 1986-09-26 | Shin Nisso Kako Co Ltd | Drying composition and package |
| WO2015038129A1 (en) * | 2013-09-12 | 2015-03-19 | Multisorb Technologies, Inc. | Coated sorbents and methods of making |
| CN104910366A (en) * | 2015-05-19 | 2015-09-16 | 浙江理工大学 | Organic quicklime composite desiccant and preparation method therefor |
-
2015
- 2015-05-19 CN CN201510255175.1A patent/CN104923043B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141916A (en) * | 1984-12-13 | 1986-06-28 | Shin Nisso Kako Co Ltd | Desiccant composition and molded article |
| JPS61200835A (en) * | 1985-03-04 | 1986-09-05 | Sumitomo Chem Co Ltd | Desiccant |
| JPS61216715A (en) * | 1985-03-19 | 1986-09-26 | Shin Nisso Kako Co Ltd | Drying composition and package |
| WO2015038129A1 (en) * | 2013-09-12 | 2015-03-19 | Multisorb Technologies, Inc. | Coated sorbents and methods of making |
| CN104910366A (en) * | 2015-05-19 | 2015-09-16 | 浙江理工大学 | Organic quicklime composite desiccant and preparation method therefor |
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