CN103638789A - Production process of chemical drying agent - Google Patents
Production process of chemical drying agent Download PDFInfo
- Publication number
- CN103638789A CN103638789A CN201310620767.XA CN201310620767A CN103638789A CN 103638789 A CN103638789 A CN 103638789A CN 201310620767 A CN201310620767 A CN 201310620767A CN 103638789 A CN103638789 A CN 103638789A
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- China
- Prior art keywords
- drying agent
- production process
- zeolite powder
- cellulose ether
- roasting
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- Silicates, Zeolites, And Molecular Sieves (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a production process of a chemical drying agent and belongs to the technical field of chemicals. The production process comprises the following steps: uniformly mixing zeolite powder and cellulose ether; heating a mixture in a thermal reaction kettle, and reacting at the temperature of 180 to 240 DEG C for 2 to 4 hours, and cooling the mixture for 40 minutes to obtain a viscous product; putting the viscous product into a chitosan solution, performing full and uniform stirring, adding calcium chloride for intercalation treatment, and then adding into a sodium hydroxide solution; centrifugally filtering a substance in a centrifugal machine, removing a supernatant, and preserving a solid; and roasting the preserved substance in a roasting furnace at the temperature of 360 to 400 DEG C, and after the roasting, performing drying and cooling to obtain a catalyst. The production process is simple in preparation flow and easy to operate; the prepared drying agent contains both the components of a conventional chemical drying agent and the auxiliary components of the zeolite powder and CA(H2PO4)2, so that ammonia gas components can be absorbed, and the blank that a conventional chemical drying agent cannot absorb ammonia gas is filled.
Description
technical fieldthe production technology that the present invention relates to a kind of chemical drier, belongs to technical field of chemistry.
background technologydrier is the extremely strong adsorbent of a kind of adsorption capacity.Utilize drier to remove the material of moisture in moist material.At present, conventional drier, due to the difference of application category, is divided into physical dryness agent and chemical drier.Physical dryness agent is dried by physical absorption water, as silica gel, aluminium oxide, silica, numerous capillary gap network that forms between this artificial synthetic chemical substance interior molecules, so-called capillary suction and doubtful knot effect can be formed, thereby its hydrone around can be effectively absorbed; Chemical drier is to generate hydrate and be dried by being combined with water, as calcium sulfate, calcium chloride etc., and calcium chloride wherein can not absorb ammonia, in the time of dry ammonia normally at ambient temperature by mist by anhydrous calcium chloride, once at this moment this complex compound generates and is just difficult for decomposing.
summary of the inventionin view of the defect that above-mentioned technical problem exists, the invention provides a kind of production technology of chemical drier, this technique preparation flow is simple, easy operating, the drier of preparation adopts traditional chemical drier composition, additional zeolite powder and CA (H
2p0
4)
2composition, can realize and absorb ammonia composition, made up the blank that traditional chemical drier cannot absorb ammonia.
To achieve these goals, the technical solution adopted in the present invention is: a kind of preparation method of chemical drier, is become to be grouped into by following weight percent:
Calcium chloride 20-30%, zeolite powder 25-35%, CA (H
2p0
4)
210-15%, shitosan 2-6%, cellulose ether 1.5-3.5%, NaOH 1---2%, surplus is water; It is characterized in that concrete production technology is:
Zeolite powder is mixed with cellulose ether, and put into thermal response still and heat 180-240 ℃ and react after 2-4 hours, within cooling 40 minutes, become thick;
Above-mentioned thick product is put into chitosan solution, after stirring, add calcium chloride to carry out intercalation processing, then add in sodium hydroxide solution;
Above-mentioned substance is put into centrifuge centrifugal filtration, remove supernatant, solid is retained;
The material of retention is put into roaster through 360-400 ℃ of roastings, roasting post-drying, coolingly can obtain catalyst.
Described cellulose ether is a kind of in methylcellulose, hydroxypropyl methylcellulose, sodium carboxymethylcellulose.
Beneficial effect of the present invention is: this technique preparation flow is simple, easy operating, the drier of preparation adopts traditional chemical drier composition, additional zeolite powder and CA (H2P04) 2 compositions, can realize and absorb ammonia composition, make up the blank that traditional chemical drier cannot absorb ammonia.
The specific embodiment
A preparation method for chemical drier, is become to be grouped into by following weight percent:
Calcium chloride 20-30%, zeolite powder 25-35%, CA (H
2p0
4)
210-15%, shitosan 2-6%, cellulose ether 1.5-3.5%, NaOH 1-2%, surplus are water; It is characterized in that concrete production technology is:
Zeolite powder 20% is mixed with cellulose ether 2.5%, and put into thermal response still and heat 220 ℃ and react after 3.5 hours, within cooling 40 minutes, become thick;
Above-mentioned thick product is put into chitosan solution 4%, after stirring, add calcium chloride 25% to carry out intercalation processing, then add in NaOH 1.5% solution;
Above-mentioned substance is put into centrifuge centrifugal filtration, remove supernatant, solid is retained;
The material of retention is put into roaster through 385 ℃ of roastings, roasting post-drying, coolingly can obtain catalyst.
Claims (2)
1. a preparation method for chemical drier, is become to be grouped into by following weight percent:
Calcium chloride 20-30%, zeolite powder 25-35%, CA (H2P04) 210-15%, shitosan 2-6%, cellulose ether 1.5-3.5%, NaOH 1---2%, surplus is water; It is characterized in that concrete production technology is: zeolite powder is mixed with cellulose ether, and put into thermal response still and heat 180-240 ℃ and react after 2-4 hours, within cooling 40 minutes, become thick; Above-mentioned thick product is put into chitosan solution, after stirring, add calcium chloride to carry out intercalation processing, then add in sodium hydroxide solution; Above-mentioned substance is put into centrifuge centrifugal filtration, remove supernatant, solid is retained; The material of retention is put into roaster through 360-400 ℃ of roastings, roasting post-drying, coolingly can obtain catalyst.
2. the preparation method of a kind of chemical drier according to claim 1, is characterized in that described cellulose ether is a kind of in methylcellulose, hydroxypropyl methylcellulose, sodium carboxymethylcellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310620767.XA CN103638789A (en) | 2013-11-29 | 2013-11-29 | Production process of chemical drying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310620767.XA CN103638789A (en) | 2013-11-29 | 2013-11-29 | Production process of chemical drying agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103638789A true CN103638789A (en) | 2014-03-19 |
Family
ID=50244157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310620767.XA Pending CN103638789A (en) | 2013-11-29 | 2013-11-29 | Production process of chemical drying agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103638789A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944663A (en) * | 2016-07-11 | 2016-09-21 | 中国工程物理研究院材料研究所 | Preparation method for integral molecular sieve adsorbent for deep gas dehydration |
| CN106552588A (en) * | 2015-09-30 | 2017-04-05 | 明光市龙腾矿物有限公司 | A kind of novel drier |
| CN107497257A (en) * | 2017-09-11 | 2017-12-22 | 陈景英 | A kind of hanging moisture-absorbing desiccant preparation method |
| CN107617432A (en) * | 2017-10-18 | 2018-01-23 | 卫隆哲 | A kind of sheet dehumidizer for small dehumidifier tool and preparation method thereof |
-
2013
- 2013-11-29 CN CN201310620767.XA patent/CN103638789A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106552588A (en) * | 2015-09-30 | 2017-04-05 | 明光市龙腾矿物有限公司 | A kind of novel drier |
| CN105944663A (en) * | 2016-07-11 | 2016-09-21 | 中国工程物理研究院材料研究所 | Preparation method for integral molecular sieve adsorbent for deep gas dehydration |
| CN105944663B (en) * | 2016-07-11 | 2018-04-13 | 中国工程物理研究院材料研究所 | Preparation method for the molecular sieve integral type adsorbent of gas deep dehydration |
| CN107497257A (en) * | 2017-09-11 | 2017-12-22 | 陈景英 | A kind of hanging moisture-absorbing desiccant preparation method |
| CN107617432A (en) * | 2017-10-18 | 2018-01-23 | 卫隆哲 | A kind of sheet dehumidizer for small dehumidifier tool and preparation method thereof |
| CN107617432B (en) * | 2017-10-18 | 2021-04-20 | 卫隆哲 | Sheet-shaped dehumidifying agent for small dehumidifying device and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140319 |