CN110479225A - A kind of calcium oxide-based desiccant and preparation method thereof - Google Patents
A kind of calcium oxide-based desiccant and preparation method thereof Download PDFInfo
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- CN110479225A CN110479225A CN201910793263.5A CN201910793263A CN110479225A CN 110479225 A CN110479225 A CN 110479225A CN 201910793263 A CN201910793263 A CN 201910793263A CN 110479225 A CN110479225 A CN 110479225A
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- calcium oxide
- preparation
- oxide
- parts
- based desiccant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/28—Selection of materials for use as drying agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Drying Of Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of calcium oxide-based desiccant and preparation method thereof, which is to grind 97-99 parts of calcium oxide, 0.4-1 parts of silica, 0.3-1 parts of potassium oxide and 0.3-1 parts of sodium oxide molybdena, weigh, stirring evenly；Said mixture is added in Spheroidgranulator, the bead of diameter 1-1.5mm is squeezed into, is dried, spherical calcium oxide backbone drying prescription is obtained.The method of the present invention is simple, and raw material sources are easy to get extensively, at low cost, can improve drying efficiency simultaneously and have preferable safety, stability.Desiccant of the invention, it is nontoxic, various alkaline gas can be not only dried, drying efficiency is high, and can be with absorbing acid gases, to purify to gas.
Description
Technical field
The invention belongs to additive preparation technical fields, and in particular to a kind of preparation method of calcium oxide-based desiccant.
Background technique
The control of moisture is closely bound up with the acceptance rate of product.It is thin in food under temperature and humidity appropriate
Bacterium and mould will breed at an amazing speed, make food spoilage, cause to make moist and go mouldy.Electronic product also can be excessively high because of humidity
It causes metal to aoxidize, generates defective products.The use of desiccant is just intended to the hair for avoiding extra moisture from causing defective products
It is raw.Calcium oxide desiccant, that is, lime desiccant has the characteristics that nontoxic, intensity is big, waterproof performance is good.The master of calcium oxide desiccant
Wanting ingredient is calcium oxide (CaO), and water absorbing capacity is realized by chemically reacting, and water suction has irreversibility.Regardless of outer
Boundary's ambient humidity height, desiccant can be remained above the wettability power of self weight 40%, save more suitable for low temperature, have pole
Good drying moisture absorption.
Therefore a kind of calcium oxide desiccant is researched and developed, for reducing food mildew, reduction electronic product fraction defective has important
Meaning.
Summary of the invention
Aiming at the deficiencies in the prior art, the present invention provides a kind of preparation method of calcium oxide-based desiccant；In conjunction with
The water suction property of calcium oxide prepares a kind of calcium oxide-based desiccant.
In order to achieve the above object, technical solution of the present invention is as follows:
A kind of preparation method of calcium oxide-based desiccant comprising the steps of:
(1) 97-99 parts of calcium oxide, 0.4-1 parts of silica, 0.3-1 parts of potassium oxide and 0.3-1 parts of sodium oxide molybdena are ground
It grinds, weigh, stir evenly；
(2) said mixture is added in Spheroidgranulator, is squeezed into the bead of diameter 1-1.5mm, dried, obtain spherical oxygen
Change calcium backbone drying prescription.
Preferably, the proportion of step (1) calcium oxide, silica, potassium oxide and sodium oxide molybdena are as follows: 98 parts of calcium oxide,
0.7 part of silica, 0.65 part of potassium oxide and 0.65 part of sodium oxide molybdena.
Preferably, the granularity of the step (1), required calcium oxide is controlled in 300 ~ 1000 mesh.
Preferably, the granularity of the step (1), required silica is controlled in 300 ~ 1000 mesh.
Preferably, the step (1), required potassium oxide granularity control is in 300 ~ 1000 mesh.
Preferably, the step (1), required sodium oxide molybdena granularity control is in 300 ~ 1000 mesh.
Preferably, mixture is squeezed balling-up under the pressure of 249kN by Spheroidgranulator in the step (2).
A kind of calcium oxide-based desiccant prepared by above-mentioned preparation method, environmental condition is at RH55% (25 DEG C)
When, moisture absorption rate 0.25 ~ 0.5%/for 24 hours, the weight after moisture absorption saturation is greater than the 140% of initial weight；Environmental condition is in RH55%
When (90 DEG C), weight is reduced within 1.0% after 12h moisture absorption saturation.
The utility model has the advantages that
1) the method for the present invention preparation is simple, and raw material sources are easy to get extensively, low in cost, will not generate secondary pollution, can mention simultaneously
High drying efficiency simultaneously has preferable safety, stability；
2) desiccant of the invention, it is nontoxic, various alkaline gas can be not only dried, drying efficiency is high, and can inhale
Attached sour gas, to be purified to gas.With nontoxic, intensity is big, waterproof performance is good, wide adaptability, wettability power are strong
And the characteristics of obvious drying effect.Regardless of external environment humidity height, desiccant can be remained above the moisture absorption energy of self weight 40%
Power is saved more suitable for low temperature, has fabulous drying moisture absorption.
Specific embodiment
The present invention is described below with reference to specific embodiments.It will be appreciated by those skilled in the art that these embodiments are only
For illustrating the present invention, do not limit the scope of the invention in any way.
Embodiment 1
A kind of preparation method of calcium oxide-based desiccant comprising the steps of:
(1) by 98 parts of calcium oxide, 0.7 part of silica, 0.65 part of potassium oxide and the grinding of 0.65 part of sodium oxide molybdena, title
It takes, stir evenly；
(2) said mixture is added in Spheroidgranulator, through being squeezed into the bead of diameter 1-1.5mm under the pressure of 249kN,
Obtain spherical calcium oxide backbone drying prescription.
Embodiment 2
A kind of preparation method of calcium oxide-based desiccant comprising the steps of:
(1) 99 parts of calcium oxide, 0.4 part of silica, 0.3 part of potassium oxide and 0.3 part of sodium oxide molybdena are ground, weighed,
It stirs evenly；
(2) said mixture is added in Spheroidgranulator, through being squeezed into the bead of diameter 1-1.5mm under the pressure of 249kN,
Obtain spherical calcium oxide backbone drying prescription.
Embodiment 3
A kind of preparation method of calcium oxide-based desiccant comprising the steps of:
(1) 97 parts of calcium oxide, 1 part of silica, 1 part of potassium oxide and 1 part of sodium oxide molybdena ground, weighed, stirred
It is even；
(2) said mixture is added in Spheroidgranulator, through being squeezed into the bead of diameter 1-1.5mm under the pressure of 249kN,
Obtain spherical calcium oxide backbone drying prescription.
The performance for measuring the calcium oxide-based desiccant of the preparation of embodiment 1 to 3, is shown in Table 1.
Table 1
The above is only feature implementation examples of the invention, are not limited in any way to the scope of the present invention.It is all to be handed over using same
It changes or equivalence replacement and the technical solution that is formed, all falls within rights protection scope of the present invention.
Claims (8)
1. a kind of preparation method of calcium oxide-based desiccant, which is characterized in that comprise the steps of:
(1) 97-99 parts of calcium oxide, 0.4-1 parts of silica, 0.3-1 parts of potassium oxide and 0.3-1 parts of sodium oxide molybdena are ground
It grinds, weigh, stir evenly；
(2) said mixture is added in Spheroidgranulator, is squeezed into the bead of diameter 1-1.5mm, dried, obtain spherical oxygen
Change calcium backbone drying prescription.
2. the preparation method of calcium oxide-based desiccant as described in claim 1, it is characterised in that: step (1) calcium oxide,
The proportion of silica, potassium oxide and sodium oxide molybdena are as follows: 98 parts of calcium oxide, 0.7 part of silica, 0.65 part of potassium oxide and 0.65 part
Sodium oxide molybdena.
3. the preparation method of calcium oxide-based desiccant as described in claim 1, it is characterised in that: step (1) requisite oxygen
The granularity for changing calcium is controlled in 300 ~ 1000 mesh.
4. the preparation method of calcium oxide-based desiccant as described in claim 1, it is characterised in that: two needed for the step (1)
The granularity of silica is controlled in 300 ~ 1000 mesh.
5. the preparation method of calcium oxide-based desiccant as described in claim 1, it is characterised in that: step (1) requisite oxygen
Change the control of potassium granularity in 300 ~ 1000 mesh.
6. the preparation method of calcium oxide-based desiccant as described in claim 1, it is characterised in that: step (1) requisite oxygen
Change the control of sodium granularity in 300 ~ 1000 mesh.
7. the preparation method of calcium oxide-based desiccant as described in claim 1, it is characterised in that: spherical in the step (2)
Mixture is squeezed balling-up under the pressure of 249kN by pelletizer.
8. a kind of calcium oxide that the preparation method by any calcium oxide-based desiccant of claim 1 to 6 prepares
Backbone drying prescription, it is characterised in that: environmental condition is at RH55% (25 DEG C), moisture absorption rate 0.25 ~ 0.5%/for 24 hours, after moisture absorption saturation
Weight be greater than initial weight 140%；At RH55% (90 DEG C), weight is reduced 1.0% environmental condition after 12h moisture absorption saturation
Within.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793263.5A CN110479225A (en) | 2019-08-27 | 2019-08-27 | A kind of calcium oxide-based desiccant and preparation method thereof |
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| CN201910793263.5A CN110479225A (en) | 2019-08-27 | 2019-08-27 | A kind of calcium oxide-based desiccant and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422687A (en) * | 2001-12-06 | 2003-06-11 | 吴才来 | Mineral drying agent |
| CN106853359A (en) * | 2016-12-07 | 2017-06-16 | 李可文 | It is a kind of to dry agent prescription |
-
2019
- 2019-08-27 CN CN201910793263.5A patent/CN110479225A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422687A (en) * | 2001-12-06 | 2003-06-11 | 吴才来 | Mineral drying agent |
| CN106853359A (en) * | 2016-12-07 | 2017-06-16 | 李可文 | It is a kind of to dry agent prescription |
Non-Patent Citations (1)
| Title |
|---|
| 林锦明: "《化学实验室工作手册》", 31 January 2016, 第二军医大学出版社 * |
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Effective date of registration: 20220121 Address after: 421300 Pingtang Road, Jinlong Industrial Park, Kaiyun Town, Hengshan County, Hengyang City, Hunan Province Applicant after: Hunan Bi into Polytron Technologies Inc. Address before: 421000 household 601, No. 22, Zhangfei lane, Yanfeng District, Hengyang City, Hunan Province Applicant before: Deng Jinying |
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Application publication date: 20191122 |