JPH01215334A - Dehumidifying agent - Google Patents
Dehumidifying agentInfo
- Publication number
- JPH01215334A JPH01215334A JP3960688A JP3960688A JPH01215334A JP H01215334 A JPH01215334 A JP H01215334A JP 3960688 A JP3960688 A JP 3960688A JP 3960688 A JP3960688 A JP 3960688A JP H01215334 A JPH01215334 A JP H01215334A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- calcium chloride
- dehumidifying
- dehumidifying agent
- hemihydrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 23
- 239000001110 calcium chloride Substances 0.000 claims abstract description 21
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 21
- 239000010440 gypsum Substances 0.000 claims abstract description 16
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 16
- 239000002274 desiccant Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000007791 dehumidification Methods 0.000 abstract description 11
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000003009 desulfurizing effect Effects 0.000 abstract 2
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- -1 dihydrate salt Chemical class 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000238413 Octopus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000015895 biscuits Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000011508 lime plaster Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Drying Of Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
〔並業上の利用分野〕
本発明はＩｆｒＭ、な脱湿剤に関し、時にＣＯ□レーザ
発振媒体ガスや天然ガス等工業用ガスの脱湿、禁湿性ｎ
′Ｉｊｊｍ械、鋼材等の保管、輸送時の除湿、郡４や衣
服箱の乾燥、禁湿性食品（の９、ビスケット、クラッカ
ー）ｎ＃の乾燥用などに使用される脱湿剤に関する。[Detailed Description of the Invention] [Field of Application in the Ordinary Industry] The present invention relates to a dehumidifying agent such as IfrM, which is sometimes used to dehumidify industrial gases such as CO□ laser oscillation medium gas and natural gas, and has moisture-baring properties.
This product relates to dehumidifiers used for storage of machinery, steel materials, etc., dehumidification during transportation, drying of food boxes and clothes boxes, and drying of moisture-proof foods (biscuits, crackers), etc.
従来より脱湿剤としては、塩化力ルシウム、ゼオライト
、シリカゲル等が使用さｎている。Conventionally, lucium chloride, zeolite, silica gel, etc. have been used as desiccant agents.
塩化カルシウムは０ａＯ１２・２Ｈ２０と表わされ、５
００℃近傍で加熱すると脱水し無水塩化カルシウム（Ｇ
ａＯ／２ ）となシ、脱湿剤として便用されるものであ
るが、このものは粉体であって、利用にろたっては充填
、取シ出し時の取扱いが不便であり、さらに粉体である
ため脱湿時のガス接触に際しては圧力損失が大であると
いう欠点がある。また、潮解性があるため有効に利用さ
れる比率が少ない上に、機械部品などに接触すると腐食
などの原因となる欠点が６＄７用途に限界がある。Calcium chloride is expressed as 0aO12・2H20, and 5
When heated near 00℃, it dehydrates and becomes anhydrous calcium chloride (G
aO/2) It is conveniently used as a desiccant agent, but it is a powder, and it is inconvenient to handle when filling and taking out the powder. Since it is a body, it has the disadvantage that there is a large pressure loss when it comes into contact with gas during dehumidification. Further, due to its deliquescent property, it is rarely used effectively, and its use is limited because it causes corrosion when it comes into contact with mechanical parts.
又、ゼオライトやシリカゲルは塩化カルシウムに比較し
て高価であるという問題がめシ、更に水分の他Ｋ Ｏ０
２などの他性物實の共吸層から９工部合でるるという問
題がめった。In addition, zeolite and silica gel have the problem of being expensive compared to calcium chloride, and they also contain water and K O0.
The problem that the 9th part comes out from the co-absorption layer of other properties such as 2 is a frequent problem.
本発明は上述の技術水準Ｋｍみ、安価で脱湿容量が大き
く、脱湿時に潮解性もなく、かつ再生の容易な脱湿剤を
提供しようとするものである。The present invention is based on the above-mentioned state of the art and provides a desiccant agent that is inexpensive, has a large dehumidifying capacity, is not deliquescent during dehumidification, and is easily regenerated.
本発明は塩化カルシウムを石膏に担持してなることを特
徴とする脱湿剤である。The present invention is a dehumidifier characterized by comprising calcium chloride supported on gypsum.
本発明において担体として使用する石膏は、石灰石膏法
の脱硫プロセスなどによっても得ることのできる極めて
安価な材料である。また、この石膏も高温に加熱すると
、二水塩（ｃａｓｏ４・２Ｈ２０） から半水塩（Ｃ
ａＳＯ４−３ＡＨ２０）に転化し、この半水塩も水分の
存在下では二水塩に復元するので、脱湿剤としても作用
する。マ九、この作用の他に粉体でらる塩化カルシウム
の成形体としての効果が大きいという利点がある。Gypsum used as a carrier in the present invention is an extremely inexpensive material that can also be obtained by a desulfurization process using the lime plaster method. Also, when this gypsum is heated to high temperatures, it changes from dihydrate salt (caso4.2H20) to hemihydrate salt (C
aSO4-3AH20), and this hemihydrate salt also restores to dihydrate salt in the presence of moisture, so it also acts as a desiccant agent. In addition to this effect, there is the advantage that powdered calcium chloride is highly effective as a compact.
このため、本発明の脱湿剤は■上記の物性を有する石膏
に塩化カルシウムを担持したものでおるので、粉体上の
塩化カルシウムが高分散化された状態となり、従来の塩
化カルシクム単独の脱湿剤よりも脱湿性能を著しく増加
させることがでさ、■石膏上の塩化カルシウムは担体で
ある半水石膏が二本石膏に復元する際の補水作用や石膏
自体の多孔性によシ、潮解した塩化カルシウムは流動性
を失い極めて良好な脱湿性能ｔ−発起する。For this reason, the dehumidifier of the present invention is made of calcium chloride supported on gypsum having the above-mentioned physical properties, so the calcium chloride on the powder is highly dispersed, and the dehumidification agent of the present invention is different from that of conventional calcium chloride alone. Calcium chloride on gypsum has a water replenishing effect when the carrier gypsum hemihydrate restores to gypsum, and has a porosity of the gypsum itself. Deliquesced calcium chloride loses its fluidity and exhibits very good dehumidification performance.
本発明の脱湿剤に２ける石膏と塩化カルシウムの本量比
は、石膏：塩化カルシウム＝１００：２０へ５０の範囲
が好ましい。塩化カルシウムをこの量以下にすると強度
は向上するもの工脱湿効果が低下し、ｌたこの室以上で
あると脱湿効果は向上するもの工強度が低下するからで
ある。実用的には石−ｆｉ１００重前部に対し塩化カル
シウムｔ−５ｏｉｉｔ部に近い量で使用するのが好まし
い。The ratio of gypsum to calcium chloride in the desiccant of the present invention is preferably in the range of gypsum:calcium chloride=100:20 to 50. This is because if the amount of calcium chloride is less than this amount, the strength will be improved but the dehumidification effect will be decreased, and if it is more than 1 octopus, the dehumidification effect will be improved but the dehumidification strength will be decreased. Practically speaking, it is preferable to use an amount close to t-5 parts of calcium chloride per 100 parts of stone fi.
以下、従来の塩化カルシクム率独の脱湿剤を比較例とし
てあげ、本発明の脱湿剤の一実旗列をそれと対比して説
明する。Hereinafter, a conventional desiccant containing calcium chloride will be cited as a comparative example, and the series of desiccant products of the present invention will be explained in comparison therewith.
比較脱湿剤として、試薬−級のＣａＯ／２・２Ｈ２０の
粉末を３００℃で３時間加熱して無水塩化カルシウムよ
シなる吸湿剤を得た。これをガラス管に光重して、その
光槙物に３０℃の水と接触させることによシ調製した含
水空気（約０．４２３）を流通させ脱湿させた。As a comparative desiccant, reagent-grade CaO/2.2H20 powder was heated at 300 DEG C. for 3 hours to obtain a desiccant similar to anhydrous calcium chloride. This was placed in a glass tube, and water-containing air (approximately 0.423 g), which was prepared by contacting the tube with water at 30° C., was passed through the tube to dehumidify it.
最初はその脱湿剤で処理された空気中にはほとんど水分
は含１れていないが、そのうち脱湿能力の低下とともに
、水分が残留するようＫなった。水分の残留濃度が０．
１％となった時点で脱湿剤の点食を測定し、理論吸湿ｉ
ｔ ｔ−ｃａｃｚ２・２Ｈ２０−９，で吸収するとして
計算すると理論量の２７比たけ吸水していた。即ち、充
填したＣａＯ／２の７３％は未反応であって利用率は悪
かった。また、この１へ脱湿剤の使用を続行すると、潮
解し敵状となシガス流の閉塞などの障害が出た。At first, the air treated with the dehumidifier contained almost no moisture, but as the dehumidification ability decreased, moisture began to remain. The residual concentration of moisture is 0.
When it reaches 1%, measure the pitting of the desiccant and calculate the theoretical moisture absorption i.
Calculating that the amount of water absorbed is tt-cacz2.2H20-9, the amount of water absorbed was 27% of the theoretical amount. That is, 73% of the filled CaO/2 was unreacted and the utilization rate was poor. In addition, if we continued to use a dehumidifying agent in this case, problems such as deliquescence and blockage of the gas flow occurred.
これに対し、排煙脱硫装置から生成した二水石ｉ１ （
ＣａＳＯ４” ２ Ｈ２Ｏ）ｔ−１５０℃で３時間加熱
し半水石膏を得た。これに塩化カルシウム（Ｃ＆Ｃ１２
−２Ｈ２Ｏ） ｔ−５０重量となるよう水浴液として該
半水石膏に担持し、３００℃で６時間焼成し脱湿剤とし
た。On the other hand, dihydrate i1 (
Hemihydrate gypsum was obtained by heating at -150°C for 3 hours. Calcium chloride (C&C12
-2H2O) It was supported on the gypsum hemihydrate as a water bath liquid so as to have a weight of t-50, and was baked at 300°C for 6 hours to obtain a desiccant agent.
比較例と同様３０℃で水を増湿した空気により脱湿試験
を行なったところ、処理ガス中に０．１％の水分が残留
する時点でのＣａＯ／２の吸水率は理論値の７０％でめ
った。即ちｃｈａｔ２の未反応分は３０比と大巾な利用
率の向上が認められた。As in the comparative example, a dehumidification test was conducted using air humidified with water at 30°C, and the water absorption rate of CaO/2 was 70% of the theoretical value when 0.1% moisture remained in the treated gas. I failed. In other words, the unreacted portion of chat2 was 30%, which was a significant improvement in the utilization rate.
また飽和する迄水分を吸収させても塩化カルシウムは従
来の如く潮解し液状となることなく改善が計られた。こ
の飽和となった状態で３００℃に再加熱すると脱湿能を
回復し、＜９返して使用しりることを確認した。Moreover, even if it absorbs water until it becomes saturated, calcium chloride does not deliquesce and become liquid as in the past, which is an improvement. It was confirmed that when reheated to 300° C. in this saturated state, the dehumidifying ability was recovered and the product could be used for <9 times.
本発明の脱湿剤は、水分の吸着容量が大きく、再生可能
でかつ従来の潮解性の不便さも改消しうる優秀な脱湿剤
である。The desiccant of the present invention has a large moisture adsorption capacity, is recyclable, and is an excellent desiccant that can overcome the inconvenience of conventional deliquescent properties.
Claims (1)
脱湿剤。A desiccant characterized by having calcium chloride supported on gypsum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3960688A JPH01215334A (en) | 1988-02-24 | 1988-02-24 | Dehumidifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3960688A JPH01215334A (en) | 1988-02-24 | 1988-02-24 | Dehumidifying agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01215334A true JPH01215334A (en) | 1989-08-29 |
Family
ID=12557774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3960688A Pending JPH01215334A (en) | 1988-02-24 | 1988-02-24 | Dehumidifying agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01215334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020021698A (en) * | 2000-09-16 | 2002-03-22 | 김기범 | Dehumidifying composition and method for producing the same |
-
1988
- 1988-02-24 JP JP3960688A patent/JPH01215334A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020021698A (en) * | 2000-09-16 | 2002-03-22 | 김기범 | Dehumidifying composition and method for producing the same |
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