JPH04219200A - Preventing method for scale in dissolving equipment of inorganic bleaching powder - Google Patents
Preventing method for scale in dissolving equipment of inorganic bleaching powderInfo
- Publication number
- JPH04219200A JPH04219200A JP4739291A JP4739291A JPH04219200A JP H04219200 A JPH04219200 A JP H04219200A JP 4739291 A JP4739291 A JP 4739291A JP 4739291 A JP4739291 A JP 4739291A JP H04219200 A JPH04219200 A JP H04219200A
- Authority
- JP
- Japan
- Prior art keywords
- bleaching powder
- inorganic bleaching
- calcium
- polyphosphoric acid
- dissolving
- 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 71
- 239000007844 bleaching agent Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 14
- 229920000137 polyphosphoric acid Polymers 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000002360 preparation method Methods 0.000 claims description 31
- 150000001875 compounds Chemical class 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 11
- 239000008187 granular material Substances 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 20
- 239000011575 calcium Substances 0.000 abstract description 20
- 229910052791 calcium Inorganic materials 0.000 abstract description 20
- 239000000203 mixture Substances 0.000 abstract description 20
- 238000009472 formulation Methods 0.000 abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 239000010419 fine particle Substances 0.000 abstract description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 3
- 159000000007 calcium salts Chemical class 0.000 abstract description 3
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 description 19
- 239000007864 aqueous solution Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 3
- 239000008116 calcium stearate Substances 0.000 description 3
- 235000013539 calcium stearate Nutrition 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000002552 dosage form Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 235000019359 magnesium stearate Nutrition 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000000546 pharmaceutical excipient Substances 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000000661 sodium alginate Substances 0.000 description 2
- 235000010413 sodium alginate Nutrition 0.000 description 2
- 229940005550 sodium alginate Drugs 0.000 description 2
- 235000019832 sodium triphosphate Nutrition 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- GIXFALHDORQSOQ-UHFFFAOYSA-N 2,4,6,8-tetrahydroxy-1,3,5,7,2$l^{5},4$l^{5},6$l^{5},8$l^{5}-tetraoxatetraphosphocane 2,4,6,8-tetraoxide Chemical compound OP1(=O)OP(O)(=O)OP(O)(=O)OP(O)(=O)O1 GIXFALHDORQSOQ-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- JFBJUMZWZDHTIF-UHFFFAOYSA-N chlorine chlorite Inorganic materials ClOCl=O JFBJUMZWZDHTIF-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- AZSFNUJOCKMOGB-UHFFFAOYSA-N cyclotriphosphoric acid Chemical compound OP1(=O)OP(O)(=O)OP(O)(=O)O1 AZSFNUJOCKMOGB-UHFFFAOYSA-N 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229940005657 pyrophosphoric acid Drugs 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 150000004684 trihydrates Chemical class 0.000 description 1
- 229940048102 triphosphoric acid Drugs 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、無機晒粉溶解設備のス
ケール防止方法に係り、さらに詳しくは無機晒粉溶解設
備の溶解槽、無機晒粉溶解水配管等におけるカルシウム
スケールの生成を防止する方法に関する。[Industrial Application Field] The present invention relates to a method for preventing scale in inorganic bleaching powder dissolving equipment, and more specifically to preventing the formation of calcium scale in the dissolving tank of inorganic bleaching powder dissolving equipment, inorganic bleaching powder dissolving water piping, etc. Regarding the method.
【０００２】本発明は、晒、殺菌消毒、スライムコント
ロール等を目的として、次亜塩素酸カルシウム水溶液を
注入すべく無機晒粉溶解設備を付設した水処理設備等に
好適に採用される。The present invention is suitably employed in water treatment equipment equipped with inorganic bleach dissolving equipment for injecting an aqueous calcium hypochlorite solution for the purpose of bleaching, sterilization, slime control, and the like.
【０００３】0003
【従来の技術】従来から、水道水、プール水、汚水、し
尿処理設備の排水、機械装置の冷却水等の水処理に、殺
菌消毒、スライムコントロールなどを目的として、塩素
または次亜塩素酸塩の水溶液を注入する方法があり、そ
の一方式として次亜塩素酸カルシウムを主成分とする無
機晒粉を水に溶解する溶解槽を構成の中心とする無機晒
粉溶解設備を水処理設備に付設する方法が採用されてい
る。[Prior Art] Chlorine or hypochlorite has traditionally been used to treat tap water, pool water, sewage, wastewater from human waste treatment facilities, cooling water for machinery, etc., for purposes such as sterilization and slime control. One method is to inject an aqueous solution of calcium hypochlorite into water, and one method is to attach inorganic bleaching powder dissolving equipment to water treatment equipment, which consists mainly of a dissolving tank that dissolves inorganic bleaching powder, whose main component is calcium hypochlorite, in water. The method is adopted.
【０００４】0004
【発明が解決すべき課題】従来の無機晒粉溶解設備にお
いては、無機晒粉を水に溶解した次亜塩素酸カルシウム
水溶液中のカルシウム濃度が高濃度となることにより、
溶解槽内部や次亜塩素酸カルシウム水溶液の排出配管内
に炭酸カルシウムを主成分とするカルシウムスケールが
生成して付着するため、次亜塩素酸カルシウム水溶液の
流れが悪化し、甚だしくは配管が閉塞するなどの障害を
生じていた。[Problems to be Solved by the Invention] In the conventional inorganic bleaching powder dissolving equipment, due to the high concentration of calcium in the calcium hypochlorite aqueous solution in which inorganic bleaching powder is dissolved in water,
Calcium scale, mainly composed of calcium carbonate, forms and adheres inside the dissolution tank and inside the discharge piping of the calcium hypochlorite aqueous solution, which impairs the flow of the calcium hypochlorite aqueous solution and even clogs the piping. This caused problems such as:
【０００５】これらの障害対策として、通常塩酸を使用
して溶解槽内部や次亜塩素酸カルシウム水溶液の排出配
管内に生成したカルシウムスケールを定期的に溶解除去
する方法等が採用されているが、カルシウムスケール中
に残存している次亜塩素酸カルシウムと塩酸との反応に
よる毒性の強い塩素ガスの発生や、塩酸による装置の腐
蝕等の解決すべき課題がある。[0005] As a countermeasure against these problems, a method is usually adopted in which hydrochloric acid is used to periodically dissolve and remove calcium scale that has formed inside the dissolution tank or inside the discharge pipe of the calcium hypochlorite aqueous solution. There are issues that need to be resolved, such as the generation of highly toxic chlorine gas due to the reaction between calcium hypochlorite remaining in the calcium scale and hydrochloric acid, and corrosion of equipment due to hydrochloric acid.
【０００６】本発明は、無機晒粉溶解設備の前記の課題
を解決する手段として、カルシウムスケールの溶解槽内
部や次亜塩素酸カルシウム水溶液の排出配管内への付着
を防止する方法を提供することを目的とする。[0006] The present invention provides a method for preventing calcium scale from adhering to the inside of a dissolving tank and an aqueous calcium hypochlorite solution to a discharge pipe, as a means of solving the above-mentioned problems of inorganic bleach dissolving equipment. With the goal.
【０００７】[0007]
【課題を解決するための手段】本発明者等は、前記目的
を達成すべく鋭意研究した結果、無機晒粉溶解設備の溶
解槽内で、無機晒粉製剤とポリリン酸化合物製剤とを同
時に溶解させることによりスケールの原因となるカルシ
ウム塩の微粒子の生成が抑制され、かつ生成したカルシ
ウム塩の微粒子がほとんど装置内部に付着しないことを
見出し、本発明を完成した。[Means for Solving the Problems] As a result of intensive research to achieve the above object, the present inventors have discovered that an inorganic bleaching powder formulation and a polyphosphoric acid compound formulation are simultaneously dissolved in a dissolving tank of an inorganic bleaching powder dissolving equipment. The present invention has been completed based on the discovery that by doing so, the production of calcium salt fine particles that cause scale is suppressed, and that the generated calcium salt fine particles hardly adhere to the inside of the device.
【０００８】本発明は、無機晒粉溶解設備の溶解槽に、
無機晒粉製剤とポリリン酸化合物製剤とを充填して注水
し、無機晒粉とポリリン酸化合物とを同時に溶解するこ
とを特徴とする無機晒粉溶解設備のスケール防止方法で
ある。以下、本発明を詳細に説明する。[0008] The present invention provides a dissolving tank of inorganic bleaching powder dissolving equipment.
This is a scale prevention method for inorganic bleaching powder dissolving equipment, which is characterized by filling an inorganic bleaching powder preparation and a polyphosphoric acid compound preparation and pouring water to dissolve the inorganic bleaching powder and polyphosphoric acid compound simultaneously. The present invention will be explained in detail below.
【０００９】（無機晒粉溶解設備）無機晒粉溶解設備は
、無機晒粉を水に溶解する溶解槽を具備し、次亜塩素酸
カルシウム水溶液を製造し、他の設備、たとえば水処理
設備等に供給するものであればよく、溶解槽の構造他の
詳細な構成には特に制限はない。これらの設備は、通常
塩化ビニール、ポリエチレン等のプラスチック材料で構
成される。(Inorganic bleaching powder dissolving equipment) The inorganic bleaching powder dissolving equipment is equipped with a dissolving tank for dissolving inorganic bleaching powder in water, produces an aqueous calcium hypochlorite solution, and is used for other equipment, such as water treatment equipment, etc. There are no particular restrictions on the structure or other detailed configuration of the dissolution tank. These equipment are usually constructed of plastic materials such as vinyl chloride, polyethylene, etc.
【００１０】（無機晒粉）無機晒粉は、次亜塩素酸カル
シウムを主成分とする組成物であり、無機晒粉製剤は、
前記組成物の錠剤、顆粒剤、粉剤等の任意の剤形の製剤
である。通常、高度晒粉（次亜塩素酸カルシウム・無水
塩、２水塩、３水塩）、６０％高度晒粉およびこれらの
配合組成物の各種剤形の製剤が市販されており、その何
れをも使用できる。また剤形の異なる２種以上を併用し
てもよい。(Inorganic bleaching powder) Inorganic bleaching powder is a composition whose main component is calcium hypochlorite, and inorganic bleaching powder preparations are:
It is a preparation of the above composition in any dosage form such as tablets, granules, powders, etc. Usually, preparations of various dosage forms of highly bleached powder (calcium hypochlorite/anhydrous salt, dihydrate, trihydrate), 60% highly bleached powder, and combination compositions of these are commercially available. can also be used. Moreover, two or more types with different dosage forms may be used in combination.
【００１１】（ポリリン酸化合物）ポリリン酸化合物は
、トリポリリン酸、ヘキサメタリン酸、メタリン酸、ピ
ロリン酸、トリリン酸、トリメタリン酸、テトラメタリ
ン酸等の金属塩、好ましくはナトリウム塩またはカリウ
ム塩である。ポリリン酸化合物製剤は、前記ポリリン酸
化合物の少なくとも１種を主成分とする錠剤、顆粒剤、
粉剤等任意の剤形の製剤である。前記ポリリン酸化合物
製剤として、ポリリン酸化合物の単独系またはポリリン
酸化合物と溶解速度調整剤、結合剤、滑沢剤等の賦形剤
との混合物系が使用されるが、混合物系を使用する場合
、製剤中のポリリン酸化合物の配合量は２０重量％以上
、好ましくは４０重量％以上である。通常、ポリリン酸
化合物は、無機晒粉製剤に比較して溶解速度が速いため
、ポリリン酸化合物に溶解速度調整剤を配合した混合物
系を成形した錠剤、顆粒剤などの製剤を用いるのが好ま
しい。またこれらの製剤の成形時の成形性や、金型から
の離形性を向上させることを目的として、結合剤や滑沢
剤が配合される。(Polyphosphoric Acid Compound) The polyphosphoric acid compound is a metal salt such as tripolyphosphoric acid, hexametaphosphoric acid, metaphosphoric acid, pyrophosphoric acid, triphosphoric acid, trimetaphosphoric acid, tetrametaphosphoric acid, etc., preferably a sodium salt or a potassium salt. Polyphosphoric acid compound preparations include tablets, granules, and
It is a preparation in any form such as a powder. As the polyphosphoric acid compound preparation, a single polyphosphoric acid compound or a mixture of the polyphosphoric acid compound and excipients such as a dissolution rate regulator, a binder, and a lubricant are used. When a mixture is used, The amount of the polyphosphoric acid compound in the formulation is 20% by weight or more, preferably 40% by weight or more. Generally, polyphosphoric acid compounds have a faster dissolution rate than inorganic bleaching powder formulations, so it is preferable to use formulations such as tablets and granules formed from a mixture containing a polyphosphoric acid compound and a dissolution rate regulator. In addition, a binder and a lubricant are added for the purpose of improving the moldability of these preparations during molding and the releasability from a mold.
【００１２】前記混合物系の製剤の賦形剤である溶解速
度調整剤として、ステアリン酸カルシウム，ステアリン
酸マグネシウム，ステアリン酸ナトリウム等のステアリ
ン酸金属塩、ステアリン酸、ケイ酸微粉末、ケイ酸カル
シウム微粉末などが、結合剤として、ポリエチレングリ
コール，ポリビニルピロリドン等の水溶性高分子、カル
ボキシメチルセルロース、アルギン酸ナトリウム、ホウ
酸などが、また滑沢剤として、ステアリン酸カルシウム
、ステアリン酸マグネシウム、タルクなどが使用される
。[0012] As a dissolution rate regulator which is an excipient for the above-mentioned mixture-based preparation, stearic acid metal salts such as calcium stearate, magnesium stearate, and sodium stearate, stearic acid, silicic acid fine powder, and calcium silicate fine powder are used. As binders, water-soluble polymers such as polyethylene glycol, polyvinylpyrrolidone, carboxymethyl cellulose, sodium alginate, boric acid, etc. are used, and as lubricants, calcium stearate, magnesium stearate, talc, etc. are used.
【００１３】前記無機晒粉溶解設備の溶解槽に無機晒粉
製剤と共にポリリン酸化合物製剤を充填し、水を導入、
注水することにより、次亜塩素酸カルシウム水溶液を得
るが、ポリリン酸化合物の溶解量は、無機晒粉製剤の溶
解量 １００重量部に対してポリリン酸化合物として
０．１〜２０重量部、好ましくは ０．５〜１０重量部
である。ポリリン酸化合物の溶解量が過少な場合、スケ
ール防止効果が不十分となり、一方過大な場合には、次
亜塩素酸カルシウム水溶液のｐＨが上昇し、また排水中
のリン酸濃度が高くなる等の問題が派生する。[0013] Filling the dissolving tank of the inorganic bleaching powder dissolving equipment with the inorganic bleaching powder formulation and the polyphosphoric acid compound formulation, and introducing water;
By pouring water, an aqueous calcium hypochlorite solution is obtained, but the amount of polyphosphoric acid compound dissolved is as follows: 100 parts by weight of the inorganic bleaching powder preparation
The amount is 0.1 to 20 parts by weight, preferably 0.5 to 10 parts by weight. If the dissolved amount of the polyphosphoric acid compound is too small, the scale prevention effect will be insufficient, while if it is too large, the pH of the calcium hypochlorite aqueous solution will increase, and the phosphoric acid concentration in the wastewater will increase. A problem arises.
【００１４】[0014]
【作 用】本発明無機晒粉溶解設備のスケー
ル防止方法は、前記したように同設備の溶解槽に、無機
晒粉製剤とポリリン酸化合物製剤とを充填して注水し、
次亜塩素酸カルシウムとポリリン酸化合物とを同時に溶
解することを特徴とする。[Function] As described above, the scale prevention method of the inorganic bleaching powder dissolving equipment of the present invention involves filling the dissolving tank of the same equipment with an inorganic bleaching powder preparation and a polyphosphoric acid compound preparation, and pouring water into the dissolving tank.
It is characterized by simultaneously dissolving calcium hypochlorite and a polyphosphoric acid compound.
【００１５】本発明において、次亜塩素酸カルシウム水
溶液中にポリリン酸化合物が存在することにより、その
中に存在するカルシウム化合物微粒子の表面電位が低下
し、溶解槽内や次亜塩素酸カルシウム水溶液配管への炭
酸カルシウム等のカルシウムスケールの付着が防止され
るものと推定される。In the present invention, the presence of the polyphosphoric acid compound in the calcium hypochlorite aqueous solution lowers the surface potential of the calcium compound fine particles present therein, causing the inside of the dissolution tank and the calcium hypochlorite aqueous solution piping to decrease. It is presumed that calcium scale such as calcium carbonate is prevented from adhering to the surface.
【００１６】[0016]
【実 施 例】本発明を、実施例および比較例によ
り、さらに詳細に説明する。ただし、本発明の範囲は、
以下の実施例により何等の制限を受けるものではない。[Examples] The present invention will be explained in more detail with reference to Examples and Comparative Examples. However, the scope of the present invention is
The following examples are not intended to limit the invention in any way.
【００１７】（１）無機晒粉製剤：試料ＨＣ−１〜ＨＣ
−３試料ＨＣ−１：日曹ハイクロン（有効塩素濃度７０
％以上）２０ｇ錠剤（日本曹達（株）製）
試料ＨＣ−２：日曹ハイクロン（有効塩素濃度７０％以
上）顆粒剤（日本曹達（株）製）
試料ＨＣ−３：６０％高度晒粉（有効塩素濃度６０％以
上）粉剤（日本曹達（株）製）(1) Inorganic bleaching powder preparations: Samples HC-1 to HC
-3 Sample HC-1: Nisso Hyclone (effective chlorine concentration 70
% or more) 20g tablet (manufactured by Nippon Soda Co., Ltd.) Sample HC-2: Nisso Hyclone (available chlorine concentration 70% or more) granules (manufactured by Nippon Soda Co., Ltd.) Sample HC-3: 60% high bleaching powder ( Available chlorine concentration 60% or more) Powder (manufactured by Nippon Soda Co., Ltd.)
【００１８】（２）ポリリン酸化合物錠剤：試料ＰＰ−
１〜ＰＰ−５
試料ＰＰ−１：ヘキサメタリン酸ナトリウム １００重
量部に、アルギン酸ナトリウムを ３重量部添加し、リ
ボンミキサーを用いて混合した後、混合物を金型で圧縮
成形した２０ｇの錠剤
試料ＰＰ−２：トリポリリン酸ナトリウム １００重量
部に、１０重量％ポリビニルピロリドン水溶液２０重量
部を添加し、ニーダーで混練後、押出し造粒、乾燥した
顆粒を金型で圧縮成形した２０ｇの錠剤
試料ＰＰ−３：ヘキサメタリン酸ナトリウム４０重量部
、ホウ酸５８重量部およびステアリン酸カルシウム２重
量部の割合でリボンミキサーを用いて混合した後、混合
物を金型で圧縮成形した１０ｇの錠剤
試料ＰＰ−４：ヘキサメタリン酸ナトリウム顆粒剤試料
ＰＰ−５：トリポリリン酸ナトリウム粉剤(2) Polyphosphoric acid compound tablet: Sample PP-
1 to PP-5 Sample PP-1: 20 g tablet sample PP-1: 3 parts by weight of sodium alginate was added to 100 parts by weight of sodium hexametaphosphate, mixed using a ribbon mixer, and the mixture was compression-molded in a mold. 2: 20 parts by weight of a 10% by weight aqueous polyvinylpyrrolidone solution was added to 100 parts by weight of sodium tripolyphosphate, kneaded in a kneader, extrusion granulated, and the dried granules were compressed in a mold to obtain a 20 g tablet sample PP-3: After mixing 40 parts by weight of sodium hexametaphosphate, 58 parts by weight of boric acid, and 2 parts by weight of calcium stearate using a ribbon mixer, the mixture was compressed in a mold. 10 g tablet sample PP-4: Sodium hexametaphosphate granules Agent sample PP-5: Sodium tripolyphosphate powder
【００１９】
（３）溶解試験
（Ａ） 溶解試験−１
添付図１に示す試験溶解設備の３ｌ塩化ビニール製の溶
解槽：１に、前記無機晒粉製剤：試料ＨＣ−１とポリリ
ン酸化合物製剤：試料ＰＰ−１〜ＰＰ−３とを組み合わ
せて充填し、注水管：２を通して３ｌ／分の速度で水を
溶解槽：１内に注水し排水管：３を通して溶解水を系外
に流出させた。また比較として、無機晒粉製剤：試料Ｈ
Ｃ−１のみを充填し、前記と同一の条件で溶解して溶解
水を系外に流出させた。４８時間の連続溶解後、排水管
内および排水管の出口にセットした塩化ビニール製試験
片：４へのカルシウムスケールの付着状況を目視観察し
た。[0019]
(3) Dissolution test (A) Dissolution test-1 In the 3L vinyl chloride dissolution tank 1 of the test dissolution equipment shown in attached Figure 1, the inorganic bleaching powder preparation: Sample HC-1 and the polyphosphoric acid compound preparation: Sample PP were placed. -1 to PP-3 were combined and filled, and water was injected into the dissolution tank 1 at a rate of 3 l/min through the water injection pipe 2, and the dissolved water was drained out of the system through the drain pipe 3. For comparison, inorganic bleaching powder preparation: Sample H
Only C-1 was charged and dissolved under the same conditions as above, and the dissolved water was allowed to flow out of the system. After continuous dissolution for 48 hours, the state of adhesion of calcium scale to the vinyl chloride test piece No. 4 set inside the drain pipe and at the outlet of the drain pipe was visually observed.
【００２０】（Ｂ） 溶解試験−２
添付図２に示す試験溶解設備の１ｌ塩化ビニール製の溶
解槽：１に、注水管：２を通して１ｌ／分の速度で注水
しながら、溶解溶解槽：１に無機晒粉製剤：試料ＨＣ−
２、ＨＣ−３およびポリリン酸化合物製剤：試料ＰＰ−
４、ＰＰ−５を組み合わせて、１時間に１回、各々一定
量を１日に８回投入し溶解水を系外に流出させ、これを
６日間継続後した。比較として、無機晒粉製剤：試料Ｈ
Ｃ−２のみを３０分に１回、１日に１６回投入したた以
外は、前記と同一の条件で溶解水を系外に流出させた。
６日後、排水管内および排水管の出口にセットした塩化
ビニール製試験片：４へのカルシウムスケールの付着状
況を目視観察した。(B) Dissolution Test-2 While pouring water into the 1L vinyl chloride dissolution tank 1 of the test dissolution equipment shown in attached Figure 2 through the water injection pipe 2 at a rate of 1L/min, Inorganic bleaching powder preparation: Sample HC-
2. HC-3 and polyphosphoric acid compound preparation: Sample PP-
4. PP-5 was combined and a fixed amount of each was added once every hour, 8 times a day, and the dissolved water was allowed to flow out of the system, and this was continued for 6 days. For comparison, inorganic bleaching powder formulation: Sample H
The dissolved water was allowed to flow out of the system under the same conditions as above, except that only C-2 was added once every 30 minutes, 16 times a day. After 6 days, the state of adhesion of calcium scale to the vinyl chloride test piece No. 4 set inside the drain pipe and at the outlet of the drain pipe was visually observed.
【００２１】無機晒粉製剤試料およびポリリン酸化合物
製剤試料の充填（投入）量および目視観察結果を表１に
示す。Table 1 shows the filling (injection) amounts and visual observation results of the inorganic bleaching powder preparation sample and the polyphosphoric acid compound preparation sample.
【００２２】なお、表１中スケールの付着状況は、下記
を表す。
○：カルシウムスケールの生成が殆ど認められなかった
。
△：カルシウムスケールの生成が僅かに認められた。
×：カルシウムスケールの生成が大量に認められた。[0022] The scale adhesion status in Table 1 is as follows. ○: Almost no calcium scale formation was observed. Δ: Slight formation of calcium scale was observed. x: A large amount of calcium scale was observed.
【００２３】[0023]
【表１】[Table 1]
【００２４】第１表に示したように、本発明のポリリン
酸化合物製剤を無機晒粉製剤と同時に溶解させた系（実
施例）においては、カルシウムスケールの生成が殆ど認
められず、また僅かに認められ系（実施例２および５）
においても、スケールは試験片付着しておらず、指で簡
単に除去できたのに対し、無機晒粉製剤を単独で溶解し
た系（比較例）においては、大量のカルシウムスケール
が生成し、排水管内および試験片に強固に付着していた
。As shown in Table 1, in the system (Example) in which the polyphosphoric acid compound preparation of the present invention was dissolved simultaneously with the inorganic bleaching powder preparation, almost no calcium scale formation was observed, and only a small amount of calcium scale was observed. Recognized system (Examples 2 and 5)
In contrast, in the system in which the inorganic bleaching powder preparation was dissolved alone (comparative example), a large amount of calcium scale was generated and the scale was not attached to the test piece and could be easily removed with fingers. It was firmly adhered to the inside of the tube and the test piece.
【００２５】[0025]
【発明の効果】本発明において、ポリリン酸化合物製剤
を、無機晒粉製剤と同時に溶解させることにより、前記
実施例および説明からも明らかなように、無機晒粉溶解
設備のカルシウムスケール生成が大幅に抑制された。し
たがって、本発明の方法は、無機晒粉溶解設備を設置し
たプール水の循環消毒、排水の消毒等に適用した場合、
著しく優れたカルシウムスケール防止効果が得られるも
ので、その利用価値は極めて高い。Effects of the Invention In the present invention, by dissolving the polyphosphoric acid compound preparation at the same time as the inorganic bleaching powder preparation, the formation of calcium scale in the inorganic bleaching powder dissolving equipment can be greatly reduced, as is clear from the above examples and explanations. Suppressed. Therefore, when the method of the present invention is applied to circulating disinfection of pool water installed with inorganic bleaching powder dissolving equipment, disinfection of wastewater, etc.
It has an extremely excellent calcium scale prevention effect, and its utility value is extremely high.
【００２６】[0026]
【００２７】第１図 溶解試験−１で使用した溶解設
備の断面図
１：溶解槽、２：注水管、３：排水管、４：試験片、５
：穴空き仕切り板、６：試料FIG. 1 Cross-sectional view of the dissolution equipment used in dissolution test-1 1: Dissolution tank, 2: Water injection pipe, 3: Drain pipe, 4: Test piece, 5
: Hole partition plate, 6: Sample
【００２８】第２図 溶解試験−２で使用した溶解設
備の断面図Figure 2: Cross-sectional view of melting equipment used in melting test-2
Claims (4)
剤とポリリン酸化合物製剤とを充填して注水し、無機晒
粉とポリリン酸化合物とを同時に溶解することを特徴と
する無機晒粉溶解設備のスケール防止方法Claim 1: An inorganic bleaching powder preparation and a polyphosphoric acid compound preparation are filled into a dissolving tank of inorganic bleaching powder dissolving equipment, and water is poured into the dissolving tank to simultaneously dissolve the inorganic bleaching powder and the polyphosphoric acid compound. How to prevent scale in bleached powder melting equipment
請求項１において、無機晒粉製剤が、次亜塩素酸カルシ
ウムを主成分とする錠剤、顆粒剤および／または粉剤で
ある無機晒粉溶解設備のスケール防止方法[Claim 2]
The scale prevention method for inorganic bleaching powder dissolving equipment according to claim 1, wherein the inorganic bleaching powder preparation is a tablet, granule, and/or powder containing calcium hypochlorite as a main component.
請求項１において、ポリリン酸化合物製剤がポリリン酸
類の金属塩よりなる群から選ばれた少なくとも１種を主
成分とする錠剤、顆粒剤および／または粉剤である無機
晒粉溶解設備のスケール防止方法[Claim 3]
The method for preventing scale in an inorganic bleaching powder dissolving equipment according to claim 1, wherein the polyphosphoric acid compound preparation is a tablet, granule and/or powder containing at least one selected from the group consisting of metal salts of polyphosphoric acids as a main component.
において、ポリリン酸化合物の溶解量が、無機晒粉製剤
の溶解量 １００重量部に対して、 ０．１〜２０重量
部である無機晒粉溶解設備のスケール防止方法[Claim 4]Claim 1
A scale prevention method for inorganic bleaching powder dissolving equipment, wherein the dissolved amount of the polyphosphoric acid compound is 0.1 to 20 parts by weight per 100 parts by weight of the dissolved inorganic bleaching powder preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4739291A JPH04219200A (en) | 1990-08-21 | 1991-02-21 | Preventing method for scale in dissolving equipment of inorganic bleaching powder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21815890 | 1990-08-21 | ||
| JP2-218158 | 1990-08-21 | ||
| JP4739291A JPH04219200A (en) | 1990-08-21 | 1991-02-21 | Preventing method for scale in dissolving equipment of inorganic bleaching powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04219200A true JPH04219200A (en) | 1992-08-10 |
Family
ID=26387547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4739291A Pending JPH04219200A (en) | 1990-08-21 | 1991-02-21 | Preventing method for scale in dissolving equipment of inorganic bleaching powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04219200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011513045A (en) * | 2008-02-27 | 2011-04-28 | シーメンス アクチエンゲゼルシヤフト | Disinfectant container, disinfectant manufacturing apparatus and manufacturing method |
| JP2016019979A (en) * | 2003-10-29 | 2016-02-04 | イー・エム・デイー・ミリポア・コーポレイシヨン | Module for purifying fluid containing cleaning agent |
-
1991
- 1991-02-21 JP JP4739291A patent/JPH04219200A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016019979A (en) * | 2003-10-29 | 2016-02-04 | イー・エム・デイー・ミリポア・コーポレイシヨン | Module for purifying fluid containing cleaning agent |
| JP2011513045A (en) * | 2008-02-27 | 2011-04-28 | シーメンス アクチエンゲゼルシヤフト | Disinfectant container, disinfectant manufacturing apparatus and manufacturing method |
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