JPH04224101A - Manufacture of solubility-controlled calcium hypochlorite molding - Google Patents
Manufacture of solubility-controlled calcium hypochlorite moldingInfo
- Publication number
- JPH04224101A JPH04224101A JP41434390A JP41434390A JPH04224101A JP H04224101 A JPH04224101 A JP H04224101A JP 41434390 A JP41434390 A JP 41434390A JP 41434390 A JP41434390 A JP 41434390A JP H04224101 A JPH04224101 A JP H04224101A
- Authority
- JP
- Japan
- Prior art keywords
- calcium hypochlorite
- molding
- calcium
- heat treatment
- hypochlorite composition
- 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
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000465 moulding Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 21
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract description 25
- 239000001110 calcium chloride Substances 0.000 abstract description 25
- 229910001628 calcium chloride Inorganic materials 0.000 abstract description 25
- 238000010438 heat treatment Methods 0.000 abstract description 20
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 7
- 239000000920 calcium hydroxide Substances 0.000 abstract description 7
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 7
- 238000005453 pelletization Methods 0.000 abstract 1
- 235000011148 calcium chloride Nutrition 0.000 description 24
- 238000004090 dissolution Methods 0.000 description 16
- 235000011116 calcium hydroxide Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000008187 granular material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 239000011575 calcium Substances 0.000 description 2
- YALMXYPQBUJUME-UHFFFAOYSA-L calcium chlorate Chemical compound [Ca+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O YALMXYPQBUJUME-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- TVWHTOUAJSGEKT-UHFFFAOYSA-N chlorine trioxide Chemical compound [O]Cl(=O)=O TVWHTOUAJSGEKT-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、一定時間における水へ
の溶解量を減少させ、かつ制御出来る次亜塩素酸カルシ
ウム成型品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded product of calcium hypochlorite that can reduce and control the amount of calcium hypochlorite dissolved in water over a certain period of time.
【０００２】0002
【従来の技術】■技術的背景
次亜塩素酸カルシウム成型品は、粉状次亜塩素酸カルシ
ウム組成物を造粒し粒状とした後、打錠機、ブリケッテ
ィングマシン等で成型され、主に水泳プール、簡易上下
水道、浄化槽等に使用される。次亜塩素酸カルシウム成
型品から溶出した次亜塩素酸カルシウムが有効塩素とし
て殺菌、消毒等の衛生管理効果を発揮する。この次亜塩
素酸カルシウム成型品は、消費に対して遂次補給しなけ
ればならず、遅溶性が望まれていた。[Prior art] ■Technical background Calcium hypochlorite molded products are produced by granulating a powdered calcium hypochlorite composition into granules and then molding them using a tablet machine, briquetting machine, etc. It is used for swimming pools, simple water supply and sewerage systems, septic tanks, etc. Calcium hypochlorite eluted from molded products becomes effective chlorine and exerts sanitary control effects such as sterilization and disinfection. This calcium hypochlorite molded product must be continuously replenished after consumption, and slow dissolution was desired.
【０００３】また、製品として出荷された次亜塩素酸カ
ルシウム成型品は、使用するまでの保管期間が長期間に
及ぶと、徐々にではあるが次亜塩素酸カルシウムの分解
反応が進行し、組成変化から生じる溶解性のクレームが
発生する場合があった。このように、次亜塩素酸カルシ
ウム成型品は、保管中の組成変化を低減化し、溶解性の
経時変化を抑える必要があった。[0003] In addition, when calcium hypochlorite molded products shipped as products are stored for a long period of time before use, the decomposition reaction of calcium hypochlorite progresses, albeit gradually, and the composition deteriorates. There have been cases where solubility claims arising from changes have arisen. In this way, it is necessary for calcium hypochlorite molded products to reduce changes in composition during storage and to suppress changes in solubility over time.
【０００４】■類似技術
特公昭４４−１０１９７、同昭４３−２８５８７は中性
次亜塩素酸カルシウムに消石灰或いは塩基性次亜塩素酸
カルシウムを混合する方法を提案している。特公昭４７
−１１３３２では次亜塩素酸カルシウムに珪酸ゲルを混
合する方法が提供されている。ＵＳＰ４１９２７６３で
は次亜塩素酸カルシウムに石灰の塩化物及びタブレット
成形潤滑剤としてのステアリン酸亜鉛を混合することが
報告されている。特公昭５５−９０４０４では次亜塩素
酸カルシウム、水酸化カルシウム及び塩化カルシウムの
混合物（水酸化カルシウム：塩化カルシウム＝１：０．
５〜３．０重量比）の錠剤が遅溶性であると示されてい
る。しかしながら、成型された次亜塩素酸カルシウム組
成物を熱処理して溶解性を調節させる報告はみられない
。[0004] Similar technology Japanese Patent Publications No. 44-10197 and No. 43-28587 propose a method of mixing slaked lime or basic calcium hypochlorite with neutral calcium hypochlorite. Special Public Service (1977)
-11332 provides a method of mixing silicate gel with calcium hypochlorite. US Pat. No. 4,192,763 reports that calcium hypochlorite is mixed with lime chloride and zinc stearate as a tablet forming lubricant. In Japanese Patent Publication No. 55-90404, a mixture of calcium hypochlorite, calcium hydroxide and calcium chloride (calcium hydroxide:calcium chloride=1:0.
5-3.0 weight ratio) tablets have been shown to be slow dissolving. However, there have been no reports of heat treating a molded calcium hypochlorite composition to adjust its solubility.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、溶解速度が
小さく、かつ溶解性を制御できる次亜塩素酸カルシウム
組成物の成型品を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a molded product of a calcium hypochlorite composition that has a low dissolution rate and can control solubility.
【０００６】[0006]
【課題を解決するための手段】■発明の構成本発明の製
造法は、次の構成からなる。[Means for Solving the Problems] ■Configuration of the Invention The manufacturing method of the present invention has the following configuration.
【０００７】次亜塩素酸カルシウム組成物を成型後、４
０〜６０℃で熱処理することを特徴とする次亜塩素酸カ
ルシウム成型品の製造法。After molding the calcium hypochlorite composition, 4
A method for producing a calcium hypochlorite molded product, characterized by heat treatment at 0 to 60°C.
【０００８】尚、以降に示す％は、別に示さない限り重
量に基づくものである。[0008] The percentages shown below are based on weight unless otherwise indicated.
【０００９】■詳細な説明
次亜塩素酸カルシウム組成物は、通常、次亜塩素酸カル
シウム５０〜８０ｗｔ％、水分２０ｗｔ％以下、塩化カ
ルシウム５ｗｔ％以下、水酸化カルシウム３〜１０ｗｔ
％を含有する組成物であり、成型は、粉状次亜塩素酸カ
ルシウム組成物を造粒し、粒状とした後、打錠機、或い
はブリケッティングマシン等で製錠することにより行わ
れる。本発明では、成型された次亜塩素酸カルシウムを
４０〜６０℃に設定したオーブン、或いは恒温室等で１
〜３００時間熱処理する。４０℃未満では分解の進行が
遅く長時間の熱処理時間を要する。６０℃を越えると急
分解の起こることが懸念され好ましくない。水分１５％
以上含有している錠剤は、長時間の熱処理を施すと淡黄
色に変色する。■Detailed Description Calcium hypochlorite composition usually contains 50 to 80 wt% of calcium hypochlorite, 20 wt% or less of water, 5 wt% or less of calcium chloride, and 3 to 10 wt% of calcium hydroxide.
%, and the molding is carried out by granulating the powdered calcium hypochlorite composition to form granules, and then forming the tablets with a tablet machine, briquetting machine, or the like. In the present invention, molded calcium hypochlorite is heated in an oven set at 40 to 60°C or in a constant temperature room for 1 hour.
Heat treat for ~300 hours. Below 40°C, decomposition progresses slowly and requires a long heat treatment time. If the temperature exceeds 60°C, there is a fear that rapid decomposition may occur, which is not preferable. Moisture 15%
Tablets containing the above substances turn pale yellow when subjected to long-term heat treatment.
【００１０】本発明では熱処理することにより、次亜塩
素酸カルシウムの一部が分解し、塩化カルシウムを０．
１〜１０％増加する。塩化カルシウムの加減は熱処理温
度及び時間で管理できる。次亜塩素酸カルシウムの塩化
カルシウムへの分解反応式は次のように表される。
Ｃａ（ＣｌＯ）２ → ＣａＣｌ２ ＋
Ｏ２ ３Ｃａ（ＣｌＯ）２ →２ＣａＣｌ２
＋ Ｃａ（ＣｌＯ３ ）２
塩化カルシウムが溶解性に、特に顆粒品よりも成形品に
関与することは既に知られており、製造工程で塩化カル
シウムを残存せしめたり、顆粒品製造後に塩化カルシウ
ムを混合する方法がとられている。しかし、製造工程で
一定量の塩化カルシウムを残存せしめることは難しく、
顆粒品への塩化カルシウムの混合は効率性が悪い。また
、前記２通りの方法では必ずしも塩化カルシウム含量が
均一にならず、個々の成形品における溶解性のバラツキ
が生じやすい。本発明のように、成形された次亜塩素酸
カルシウム組成物の熱処理は、主含有物である次亜塩素
酸カルシウムの塩化カルシウムへの分解であるから、熱
処理温度及び時間を管理すれば塩化カルシウムの含量の
制御、即ち溶解性の制御が可能になる。In the present invention, by heat treatment, a part of calcium hypochlorite is decomposed and calcium chloride is reduced to 0.
Increase by 1-10%. The amount of calcium chloride can be controlled by the heat treatment temperature and time. The decomposition reaction formula of calcium hypochlorite to calcium chloride is expressed as follows. Ca(ClO)2 → CaCl2 +
O2 3Ca(ClO)2 →2CaCl2
+ Ca(ClO3)2 It is already known that calcium chloride is more involved in solubility, especially in molded products than in granule products, and calcium chloride is left in the manufacturing process or mixed with calcium chloride after the production of granule products. A method is being taken. However, it is difficult to ensure that a certain amount of calcium chloride remains during the manufacturing process.
Mixing calcium chloride into granules is inefficient. Further, in the above two methods, the calcium chloride content is not necessarily uniform, and the solubility of each molded article tends to vary. As in the present invention, heat treatment of a shaped calcium hypochlorite composition decomposes calcium hypochlorite, which is the main ingredient, into calcium chloride, so if the heat treatment temperature and time are controlled, calcium chloride It becomes possible to control the content of, that is, the solubility.
【００１１】[0011]
【実施例】本発明の実施例を示すが、本発明はこれらに
限定されるものではない。[Example] Examples of the present invention are shown below, but the present invention is not limited thereto.
【００１２】実施例１
次亜塩素酸カルシウム７４．６５％、塩化ナトリウム１
４．９６％、塩化カルシウム０．４４％、カルシウムク
ロレート０．４８％、水酸化カルシウム、５．７７％、
水分１．７％である組成を有する２０ｇの錠剤の次亜塩
素酸カルシウム成型品を５０℃の一定に保った恒温室に
いれ図１に示した時間、熱処理し、各次亜塩素酸カルシ
ウム成型品を製造した。
試験例１
実施例１でえられた各次亜塩素酸カルシウム成型品の塩
化カルシウム含量及び溶解率を測定した結果を図１に示
す。塩化カルシウム含量は、熱処理時間が２４時間品で
０．７４％、５０時間品で１．１４％というように、熱
処理と共に徐々に増加した。溶解率は、熱処理前品が４
１．５０％であるのに対し２４時間熱処理品で１６．３
１％、３３時間熱処理品で１０．５２％と、３３時間熱
処理品の溶解率は、熱処理前品の１／４となった。４２
時間熱処理品の溶解率は、１１．８５％と３３時間を越
えての熱処理は、逆に溶解性を増加する傾向にあった。
溶解速度の測定方法は次の方法で行なった。Example 1 Calcium hypochlorite 74.65%, sodium chloride 1
4.96%, calcium chloride 0.44%, calcium chlorate 0.48%, calcium hydroxide, 5.77%,
A 20 g tablet of calcium hypochlorite molded product having a composition of 1.7% moisture was placed in a thermostatic chamber kept at a constant temperature of 50°C and heat-treated for the time shown in Figure 1 to obtain each calcium hypochlorite molded product. manufactured a product. Test Example 1 The results of measuring the calcium chloride content and dissolution rate of each calcium hypochlorite molded product obtained in Example 1 are shown in FIG. The calcium chloride content gradually increased with heat treatment, such as 0.74% for the 24-hour product and 1.14% for the 50-hour product. The dissolution rate is 4 for the product before heat treatment.
1.50%, but 16.3% for 24-hour heat treated products.
1%, and the dissolution rate of the 33-hour heat-treated product was 10.52%, which was 1/4 of that of the product before heat treatment. 42
The dissolution rate of the time-heat treated product was 11.85%, meaning that heat treatment for more than 33 hours tended to increase the solubility. The dissolution rate was measured using the following method.
【００１３】３リットルの水を入れた５リットルの広口
ビーカーを温度３０℃に調節した恒温槽に入れ、ビーカ
ー水温も３０℃とした。３０℃になったことを確認した
後、個々の重量測定した錠剤４錠をビーカー内の定めら
れた位置に置き、撹拌機のスイッチを入れ錠剤の溶解を
始めた。撹拌機の回転数は８０ｒｐｍに調節した。１時
間溶解後、撹拌機のスイッチを切り錠剤を軽く濯いで取
出し濾紙の上に乗せ、軽く水分を拭き取り個々に重量測
定を行い溶解量を求めた。予め測定した錠剤４錠の重量
に対する溶解量の割合が溶解率である。A 5 liter wide-mouth beaker containing 3 liters of water was placed in a constant temperature bath adjusted to a temperature of 30°C, and the beaker water temperature was also 30°C. After confirming that the temperature had reached 30° C., four individually weighed tablets were placed in a predetermined position in a beaker, and the stirrer was turned on to begin dissolving the tablets. The rotation speed of the stirrer was adjusted to 80 rpm. After dissolving for 1 hour, the stirrer was turned off, the tablets were lightly rinsed, taken out, placed on a filter paper, the moisture was gently wiped off, and the weight of each tablet was measured to determine the amount dissolved. The ratio of the dissolved amount to the weight of four tablets measured in advance is the dissolution rate.
【００１４】実施例２
次亜塩素酸カルシウム７１．４９％、塩化ナトリウム８
．８３％、塩化カルシウム０．３４％、カルシウムクロ
レート０．７５％、水酸化カルシウム、５．３６％、水
分１２．５％である組成を有する２０ｇの錠剤の次亜塩
素酸カルシウム成型品を５０℃の一定に保った恒温室に
いれ図１に示した時間、熱処理し、各次亜塩素酸カルシ
ウム成型品を製造した。
試験例２
実施例２でえられた各次亜塩素酸カルシウム成型品の塩
化カルシウム含量及び溶解率を測定した結果を図１に示
す。塩化カルシウム含量は、熱処理時間が６０時間品で
１．５１％、１９６時間品で６．６２％と、６０時間品
までは徐々に増加しそれ以降は生成が助長される傾向に
あった。溶解率は、熱処理前品が４９．２０％であるの
に対し、６０時間品で３７．５５％、１８６時間品で１
４．３０％、１９６時間品で１２．９２％と、１９６時
間品の溶解率は、熱処理前の１／４となった。２０８時
間品の溶解率は、１３．６５％と１９６時間を越えての
熱処理は、逆に溶解性を増加する傾向にあった。溶解速
度の測定方法は試験例１に準じて行なった。Example 2 Calcium hypochlorite 71.49%, sodium chloride 8
．． 83% calcium chloride, 0.34% calcium chloride, 0.75% calcium chlorate, 5.36% calcium hydroxide, and 12.5% water. Each calcium hypochlorite molded product was manufactured by placing it in a thermostatic chamber maintained at a constant temperature and heat-treating it for the time shown in Figure 1. Test Example 2 The results of measuring the calcium chloride content and dissolution rate of each calcium hypochlorite molded product obtained in Example 2 are shown in FIG. The calcium chloride content was 1.51% in the product with a heat treatment time of 60 hours and 6.62% in the product with a heat treatment time of 196 hours, and gradually increased up to 60 hours, and the formation tended to be promoted thereafter. The dissolution rate was 49.20% for the product before heat treatment, 37.55% for the 60-hour product, and 1 for the 186-hour product.
The dissolution rate of the 196-hour product was 4.30%, and 12.92% for the 196-hour product, which was 1/4 of that before heat treatment. The dissolution rate of the 208-hour product was 13.65%, indicating that heat treatment for more than 196 hours tended to increase the solubility. The dissolution rate was measured in accordance with Test Example 1.
【００１５】[0015]
【発明の効果】本発明の次亜塩素酸カルシウム成型品の
製造法によれば、次亜塩素酸カルシウム組成物の成型品
を、温度及び時間で管理して熱処理することにより、溶
解速度が小さく、かつ溶解性の制御、管理できる次亜塩
素酸カルシウム組成物の成型品を提供出来る。Effects of the Invention: According to the method for producing calcium hypochlorite molded products of the present invention, the dissolution rate is low by heat-treating the calcium hypochlorite composition molded products by controlling temperature and time. In addition, it is possible to provide a molded product of a calcium hypochlorite composition whose solubility can be controlled and managed.
【図１】本発明の熱処理時間と錠剤の溶解性と塩化カル
シウム含有率の関係を示す図である。FIG. 1 is a diagram showing the relationship between heat treatment time, tablet solubility, and calcium chloride content according to the present invention.
○ 実施例１ 溶解率
● 実施例１ 塩化カルシウム含有率□ 実施例
２ 溶解率○ Example 1 Dissolution rate● Example 1 Calcium chloride content□ Example 2 Dissolution rate
Claims (1)
、４０〜６０℃で熱処理することを特徴とする次亜塩素
酸カルシウム成型品の製造法。1. A method for producing a calcium hypochlorite molded product, which comprises heat-treating the calcium hypochlorite composition at 40 to 60°C after molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41434390A JPH04224101A (en) | 1990-12-26 | 1990-12-26 | Manufacture of solubility-controlled calcium hypochlorite molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41434390A JPH04224101A (en) | 1990-12-26 | 1990-12-26 | Manufacture of solubility-controlled calcium hypochlorite molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04224101A true JPH04224101A (en) | 1992-08-13 |
Family
ID=18522833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41434390A Pending JPH04224101A (en) | 1990-12-26 | 1990-12-26 | Manufacture of solubility-controlled calcium hypochlorite molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04224101A (en) |
-
1990
- 1990-12-26 JP JP41434390A patent/JPH04224101A/en active Pending
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