CN1113933A - Chemical hygroscopic drying agent and its preparing method - Google Patents
Chemical hygroscopic drying agent and its preparing method Download PDFInfo
- Publication number
- CN1113933A CN1113933A CN 94111758 CN94111758A CN1113933A CN 1113933 A CN1113933 A CN 1113933A CN 94111758 CN94111758 CN 94111758 CN 94111758 A CN94111758 A CN 94111758A CN 1113933 A CN1113933 A CN 1113933A
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- China
- Prior art keywords
- drying agent
- sio
- chemical
- drier
- preparation
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Drying Of Gases (AREA)
Abstract
The invented drier consists of CaO, K2O, Na2O, Na2 SiO3, SiO2, Ca(OH)2 and MgO, where the CaO is main material, the others are auxiliary materials. When preparation, the high purity ore containing over 95% of CaCO3 is selected, after high temp. calcincing, the nonregular broken polygonal particles are carefully selected. The invented drier is made up by spraying the size prepared from the auxiliary materials on the polygonal particles. The process is simple. Said drier belong to chemical moisture sorption, the result of moisture sorption is good. Besides, said drier also features toxicless, odorless, strong capability of anticorrosion and antioxidation, low cost and wide range of application.
Description
What the present invention relates to is a kind of chemical hygroscopic drying agent and preparation method thereof.
Present commercially available physical siccative, as add the siccative that electrochromic substance is made with silica gel, distinguishing of moisture absorption degree is colour-change by siccative, moisture absorption is reversible state because of the variation of envrionment temperature and humidity, particularly when the thing water content that is dried is lower than siccative, phenomenon of losing water will occur the thing moisture that is dried is increased, cause rotten mouldy.
In view of above reason, the objective of the invention is in order to provide a kind of moisture sorption effect good contaminated articles not, nontoxic free from extraneous odour, anticorrosion, anti-oxidation chemical hygroscopic drying agent and preparation method thereof.
CaO, K are arranged in the siccative of the present invention
2O, Na
2O, Na
2SiO
3, SiO
2, Ca(OH)
2, MgO, all the other are all auxiliary material except that CaO is major ingredient in these compositions.
Each set of dispense of above-mentioned siccative is as follows than (weight percent):
CaO60～95
K
2O0.5～5
Na
2O0.5～5
Na
2SiO
31～8
SiO
20.8～9
Ca（OH）
21.3～10
MgO0.9～7
The preparation method of above-mentioned siccative adopts highly purified CaCO more than 95%
3Ore was calcined the selected pulverizing in back through at least 96 hours under at least 1100 ℃ of temperature condition be irregular multiangular particle; According to selected CaCO
3The purity of ore is with multiple chemical industry auxiliary material: K
2O, Na
2O, Na
2SiO
3, SiO
2, Ca(OH)
2, MgO makes the spraying slurries in proportion, be sprayed on the multiangular particle that roller grizzly chooses finished particle, CaCO
3Ore is through calcining CaCO
3Calcining CaO+CO
2↑ generate CaO, just can disposablely use with the microporous multi-layer composite packaging as the particle that will make finished product, contaminated articles is not sprayed at particle surface to regulate product hygroscopic property and oxidation-resistance, acid-basicity and anti-shot performance etc. with auxiliary material.
Above-mentioned irregular multiangular grain graininess is 1～5mm or 6～10mm.
Siccative of the present invention belongs to the chemotype moisture absorption, compares with existing siccative, has following advantage:
1, chemical hygroscopic, only meeting inspiration can not disengage, and moisture is irreversible state, then becomes another kind of material once moisture absorption;
2, also have powerful moisture sorption effect under the low temperature;
3, no matter extraneous humidity height, moisture uptake all is not less than own wt 30%;
4, moisture sorption effect is good, and maximum hygroscopicity reaches 45～50%;
5, stablize moisture absorption, intensity can be regulated arbitrarily;
6, according to its metamorphosis, can judge its remaining wettability power, moisture absorption is progressively changed to powder by particle with the water regain increase, changes again after being changed to powder fully by the moisture absorption between fine particle, so be two sections moisture absorptions;
7, nontoxic, free from extraneous odour, anticorrosion, anti-aging capability is strong;
8, cost is low, and purposes is wide, can be widely used in the preservation of food, medicine, tobacco, seed, textiles, instrument, storage, books information, data and family's audio-visual product, photographic apparatus, also can be used for enclosed space dehumidifying such as office, bedroom.
The method for preparing siccative of the present invention also is very simple.
Introduce embodiments of the invention below:
Table 1 is the embodiment of siccative of the present invention:
The Sichuan special product is highly purified CaCO more than 95%
3The chicken coop rock and ore is after calcining at least 96 hours under the condition of temperature more than 1100 ℃, and selected again pulverizing is the irregular multiangular particle of 1～5mm and 6～10mm, again will be by auxiliary material K
2O, Na
2O, Na
2SiO
3, SiO
2, Ca(OH)
2, the corresponding chemical industry spraying slurries that are deployed into according to composition of ores and the product different performance of drawing up of MgO are sprayed at the screening particle surface that rolls and form white multiangular particle, the wrapping material packing that adopts MULTILAYER COMPOSITE to handle through special micropore then forms.
Claims (4)
1, chemical hygroscopic drying agent is characterized in that CaO, K2O are arranged in the described siccative, Na2O, Na2SiO3, SiO2, Ca (OH) 2, MgO.
2, chemical hygroscopic drying agent as claimed in claim 1 is characterized in that each set of dispense is as follows than (weight percent) in the described siccative:
CaO60～95
K
2O0.5～5
Na
2O0.5～5
Na
2SiO
31～8
SiO
20.8～9
Ca（OH）
21.3～10
MgO0.9～7
3, the preparation method of chemical hygroscopic drying agent as claimed in claim 1 is characterized in that described preparation method adopts 95% above high-purity C aCO
3Ore was calcined the selected pulverizing in back through at least 96 hours under at least 1100 ℃ of temperature condition be irregular multiangular particle; According to selected CaCO
3The purity of ore is with multiple chemical industry auxiliary material: K
2O, Na
2O, Na
2SiO
3, SiO
2, Ca(OH)
2, MgO makes the spraying slurries in proportion, be sprayed on the multiangular particle that roller grizzly chooses finished product.
4, the preparation method of chemical hygroscopic drying agent as claimed in claim 3 is characterized in that described irregular multiangular grain graininess is 1～5mm and 6～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111758 CN1113933A (en) | 1994-05-20 | 1994-05-20 | Chemical hygroscopic drying agent and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111758 CN1113933A (en) | 1994-05-20 | 1994-05-20 | Chemical hygroscopic drying agent and its preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1113933A true CN1113933A (en) | 1995-12-27 |
Family
ID=5035595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94111758 Pending CN1113933A (en) | 1994-05-20 | 1994-05-20 | Chemical hygroscopic drying agent and its preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1113933A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299820C (en) * | 2002-07-25 | 2007-02-14 | 煤炭科学研究总院杭州环境保护研究所 | Low-cost deodorizing desiccant and its preparing method |
| CN102417042A (en) * | 2011-07-25 | 2012-04-18 | 武汉科技大学 | Packaging and storing method for powder standard sample/material easy to hydrate |
| CN102423683A (en) * | 2011-07-24 | 2012-04-25 | 长安大学 | Powder dehumidifying agent for existing roadbed and preparation method thereof |
| CN105854534A (en) * | 2016-05-21 | 2016-08-17 | 洪其祥 | Safe desiccant |
-
1994
- 1994-05-20 CN CN 94111758 patent/CN1113933A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299820C (en) * | 2002-07-25 | 2007-02-14 | 煤炭科学研究总院杭州环境保护研究所 | Low-cost deodorizing desiccant and its preparing method |
| CN102423683A (en) * | 2011-07-24 | 2012-04-25 | 长安大学 | Powder dehumidifying agent for existing roadbed and preparation method thereof |
| CN102417042A (en) * | 2011-07-25 | 2012-04-18 | 武汉科技大学 | Packaging and storing method for powder standard sample/material easy to hydrate |
| CN105854534A (en) * | 2016-05-21 | 2016-08-17 | 洪其祥 | Safe desiccant |
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Addressee: Xinghuo Food Stuff Inst., Sichuan Document name: Deemed as a notice of withdrawal |
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| WD01 | Invention patent application deemed withdrawn after publication |